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1.
J Dairy Res ; 88(2): 121-127, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-33594970

RESUMEN

Yield gaps in milk production are here defined as the differentials between the actual yield obtained by the dairy farmer and the potential farm yield (production achieved by the top 10% of farmers: Gap 2) as well as the differential between this potential farm yield and the yield registered in the research stations (Gap 1). Assessment of yield gaps provides valuable information on potential production enhancement and drivers behind yield gaps. Milk production can be increased by narrowing the predominant large yield gaps in resource-poor smallholder farming system. Hence, this study assessed the milk yield gap and factors affecting the yield gap in Ri-Bhoi district of Meghalaya, a state located in the north-eastern Himalayan region of India. This research paper provides a scope for exploring the possibilities for improving dairy production in the state as well as contributing to literature through incorporating crucial determinants responsible for milk yield gap. A sample of 81 respondents was drawn purposely from two blocks of the district. The results indicated that the average number of cattle per household was 9.38 in standard animal units. The total yield gap was estimated at 6.20 l (91.06%) per day, composed of 0.80 l (11.76%) per day of yield gap I and 5.40 l (79.30%) per day of yield gap II. This demonstrates that the top performing farms were achieving a production level not dissimilar to that obtained on the research stations, but many were doing far less well. The size of cattle shed, dairy farming experience, concentrate price and human labour were the important determinants of the yield gap. Hence, encouraging the right stocking density of cattle, training on the preparations of home-made concentrates, access to cheap and quality concentrates, incorporating training and experience sharing on proper dairy management practices and use of technology could benefit the dairy farmers of the region.


Asunto(s)
Bovinos/fisiología , Industria Lechera/métodos , Lactancia/fisiología , Leche/estadística & datos numéricos , Agricultura/métodos , Animales , Industria Lechera/educación , Industria Lechera/estadística & datos numéricos , Femenino , India , Embarazo
2.
J Dairy Res ; 87(S1): 47-52, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-33213584

RESUMEN

The present study aims to identify margins for the improvement of dairy animal welfare and production based on the quality of the human-animal relationship (HAR). The main tool proposed to improve the quality of HAR in dairy animals is training of stock-people by targeting their attitude and behaviour. Given that a good quality HAR may benefit the welfare of dairy animals and productivity, new technologies, by monitoring the handling routine on farm, may be more effective in promoting good practices. In particular, the implementation of new technologies may allow identification of specific inappropriate behaviours to be targeted at stockperson level, thus increasing the efficacy of training. However, an issue related to the introduction of new technologies in the farms, particularly in those that follow traditional farming practices, is the resistance to innovation which may be encountered.


Asunto(s)
Bienestar del Animal/ética , Industria Lechera/métodos , Agricultores/psicología , Interacción Humano-Animal/ética , Agricultura , Animales , Actitud , Conducta , Conducta Animal , Búfalos , Bovinos , Industria Lechera/educación , Industria Lechera/instrumentación , Agricultores/educación , Granjas , Femenino , Cabras , Humanos , Control de Calidad , Ovinos
3.
J Vet Med Educ ; 47(3): 263-274, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32486945

RESUMEN

Between 2012 and 2014, three cohorts of senior veterinary students participated in an 8-week dairy production medicine course created by the National Center of Excellence in Dairy Production Medicine Education for Veterinarians. One goal of this course is to better prepare veterinary students to serve the increasingly complex needs of the dairy industry. In this article, we describe the assessment methods and student performance outcomes of those first three cohorts. A combination of assessment methods was used, including pre- and post-testing; instructor observations and scores on individual and group projects, including a final integrative project; and peer evaluation. Student feedback, collected via anonymous survey, provided insight into students' perceptions about the course and their learning. Performance and feedback suggest that the course was successful in preparing students for careers using skills in dairy production medicine. Pre- and post-testing was conducted for most topic modules in the course. The mean (median) pre- and post-test scores were 47% (50% ) and 83% (88%), respectively. The mean improvement in score was significant (p < .002) for all modules and cohorts. Students indicated a moderate or high degree of confidence in performing dairy production medicine skills after each module. Of students in cohorts 1, 2, and 3, respectively, 55%, 75%, and 82% felt they could provide dairy production medicine services (e.g., records analysis, problem investigation, protocol and standard operating procedure design) either alone or with some mentoring, immediately after graduation. In addition, assessment results and student feedback enabled timely course modifications during these first three cohorts.


Asunto(s)
Industria Lechera/educación , Educación en Veterinaria , Evaluación Educacional , Veterinarios , Animales , Humanos , Estudiantes
4.
J Vet Med Educ ; 47(3): 250-262, 2020 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32486946

RESUMEN

The need for consortial programs to provide advanced education in food animal veterinary production medicine has been recognized and lauded for nearly three decades. This article describes one effort to create a dairy production medicine curriculum funded by a United States Department of Agriculture (USDA) Higher Education Challenge Grant. This National Center of Excellence in Dairy Production Medicine Education for Veterinarians is housed at the Dairy Education Center of the University of Minnesota and the project was a collaboration of the University of Minnesota, the University of Illinois, the University of Georgia, and Kansas State University. The article reviews the need for innovative ways to educate students who will optimally serve the dairy industry, provides a broad overview of the process of developing and delivering the eight-week dairy production medicine curriculum, and describes the challenges faced and lessons learned as a result of offering such a program.


Asunto(s)
Industria Lechera/educación , Educación en Veterinaria , Veterinarios , Animales , Curriculum , Humanos , Kansas , Estudiantes , Estados Unidos
5.
J Dairy Sci ; 103(8): 7569-7584, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32475674

RESUMEN

Postpasteurization contamination (PPC) with gram-negative bacteria adversely affects the quality and shelf-life of milk through the development of flavor, odor, texture, and visual defects. Through evaluation of milk quality at 4 large fluid milk processing facilities in the northeast United States, we examined the efficacy of 3 strategies designed to reduce the occurrence of PPC in fluid milk: (1) employee training (focusing on good manufacturing practices) alone and (2) with concurrent implementation of modified clean-in-place chemistry and (3) preventive maintenance (PM) focused on replacement of wearable rubber components. Despite increases in employee knowledge and self-reported behavior change, microbiological evaluation of fluid milk before and after interventions indicated that neither training alone nor training combined with modified clean-in-place interventions significantly decreased PPC. Furthermore, characterization of gram-negative bacterial isolates from milk suggested that specific bacterial taxonomic groups (notably, Pseudomonas sequence types) continued to contribute to PPC even after interventions and that no major changes in the composition of the spoilage-associated microbial populations occurred as a consequence of the interventions. More specifically, in 3 of 4 facilities, gram-negative bacteria with identical 16S rDNA sequence types were isolated on multiple occasions. Evaluation of a PM intervention showed that used rubber goods harbored PPC-associated bacteria and that PPC may have been less frequent following a PM intervention in which wearable rubber goods were replaced (reduction from 3/3 samples with PPC before to 1/3 samples after). Overall, our findings suggest that commonly used "broad stroke interventions" may have a limited effect on reducing PPC. Our case study also demonstrates the inherent complexities of identifying and successfully addressing sanitation problems in large and complex fluid milk processing facilities. For example, broad changes to sanitation practices without improvements in PM and sanitary equipment design may not always lead to reduced PPC. Our data also indicate that although short-term evaluations, such as pre- and post-tests for employee training, may suggest improvements after corrective and preventive actions, extensive microbial testing, ideally in combination with isolate characterization, may be necessary to evaluate return on investment of different interventions.


Asunto(s)
Bovinos , Industria Lechera/educación , Contaminación de Alimentos/prevención & control , Leche/normas , Animales , Bacterias/genética , Bacterias/aislamiento & purificación , ADN Ribosómico/análisis , Femenino , Contaminación de Alimentos/análisis , Calor , Higiene , Mantenimiento , Leche/química , Leche/microbiología , New England , Pasteurización , Pseudomonas/aislamiento & purificación , Gusto
6.
J Dairy Sci ; 103(7): 6716-6726, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32331892

RESUMEN

The sensory quality of fluid milk is of great importance to processors and consumers. Defects in the expected odor, flavor, or body of the product can affect consumer attitudes toward the product and, ultimately, willingness to purchase the product. Although many methods of sensory evaluation have been developed, defect judging is one particular method that has been used for decades in the dairy industry for evaluating fluid milk. Defect judging is a technique whereby panelists are trained to recognize and rate a standard set of fluid milk defects that originate from various sources (e.g., microbial spoilage). This technique is primarily used in processing facilities where identification of sensory defects can alert personnel to potential quality control issues in raw material quality, processing, or good manufacturing practices. In 2014-2016, a preliminary study of defective milk judging screening and training was conducted by the Milk Quality Improvement Program at Cornell University (Ithaca, NY). The study, which included 37 staff and students from the Cornell community, used prescreenings for common odors and basic tastes, followed by uniform training to select, initially train, and retrain defect judges of unflavored high temperature, short time fluid milk. Significant improvements were seen in correct identification of defect attributes following initial training for all defect attributes, with the exception of fruity/fermented. However, following retraining, significant improvements were observed in only 2 defect attributes: cooked and milk carton. These results demonstrate that initial training is important for panelists to correctly identify fluid milk defect attributes, but that subsequent retraining should be tailored toward specific attributes. This study provides a resource for dairy industry stakeholders to use to develop relevant and efficient training methods for fluid milk defect judging panels.


Asunto(s)
Industria Lechera , Calidad de los Alimentos , Leche , Adolescente , Adulto , Animales , Comportamiento del Consumidor , Industria Lechera/educación , Industria Lechera/organización & administración , Femenino , Calor , Humanos , Juicio , Masculino , Persona de Mediana Edad , Odorantes , Gusto , Adulto Joven
7.
J Dairy Sci ; 103(3): 2896-2905, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-31928754

RESUMEN

The objective of this project was to develop and test a web-based virtual dairy herd to help students understand the structure and functioning of a dairy herd, and to promote active learning. At the beginning of the course, the instructor defines the profiles of herds to be assigned to students (e.g., herd size, production, diets, fertility). Each student has a unique herd and engages in decision-making for desired management practices in the herd. Modeled events are based on cow physiology and normal dairy herd management practices. Students' activities and decisions include heat detection, insemination, pregnancy diagnosis, dry-off, diet specifications, feeding groups, colostrum and milk-replacer feeding, weaning, treatment of diseases, and milk withdrawal from the tank if antibiotics are used, among others. The daily output provides information on technical indexes, economic performance, counters of incorrect decisions as feedback for students, and score. Time in class can be devoted to discussions of dairy management issues. Additional exercises based on students' own herds (e.g., calculating required space for cows, land for forage production, manure management) can also be implemented. Students' performance in the virtual dairy farm was monitored over 3 years. The average score (n = 326) was 87.8 ± 1.1 over 100 points, suggesting that self-learning with the virtual dairy farm was highly successful. At the end of each semester, students (n = 277) responded to a survey on the experience of working with the virtual dairy herd. Most students (>87%) agreed that the virtual dairy herd was more effective and motivating than traditional lectures and helped them understand dairy production better. In an unannounced test conducted at least 2 wk before the final exam, students (n = 207) were asked 14 questions on dairy cattle and 14 similar questions on other species taught in the same class through traditional lectures. A similar test on the same students (n = 142) was conducted in their fifth semester (2 years later). Results were better in dairy compared with other species questions in the first (9.6 vs. 3.7) and fifth (8.0 vs. 3.8) semesters. The virtual dairy herd is an effective tool for teaching introductory courses in dairy production. The program can be accessed at www.virtualdairyfarm.org, and a manual and videos with instructions for instructors and students are available online.


Asunto(s)
Bovinos/fisiología , Calostro/metabolismo , Industria Lechera/educación , Fertilidad , Leche/metabolismo , Interfaz Usuario-Computador , Animales , Dieta/veterinaria , Femenino , Inseminación , Lactancia , Sustitutos de la Leche/metabolismo , Embarazo
8.
J Dairy Sci ; 101(10): 9463-9471, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30122408

RESUMEN

Quantitative assessments of animal welfare are increasingly being used in the dairy industry. It is important to have good precision and accuracy within and among assessors. This study explored the effectiveness of a 3-d training workshop for animal-based measures (ABM) of welfare in dairy cows, in which 14 people were trained to evaluate 6 ABM, specifically hock injuries (HI), lameness (LM), body condition score (BCS), and udder, flank, and leg cleanliness (collectively CLN). All scoring systems were modified to a dichotomous outcome, acceptable or unacceptable. Acceptable HI included no swelling or hair loss, unacceptable HI included swelling or scab; acceptable BCS was >2 on a 5-point scale, unacceptable BCS was ≤2. Acceptable CLN was up to minor splashing, unacceptable CLN was distinct plaques to a solid manure plaque. Lameness was evaluated using locomotion score or in-stall lameness score (SLS) in tiestalls; unacceptable LM was ≥3 (lameness score) on a 5-point scale, where 3 equals mild lameness or ≥2 of 4 behavioral in-stall lameness score indicators were detected. Classroom instruction took place on d 1 of training. Day 2 consisted of group assessment of LM (n = 25 cows), and HI, CLN, and BCS (n = 30 cows), and individual assessment of HI, CLN, and BCS (n = 20 cows) were performed. Day 3 included individual assessments of HI, CLN, and BCS (n = 33 cows), and individual video assessment of LM (n = 27 cows). An additional training video for LM was sent to trainees 3 wk after the workshop, and another follow-up assessment of LM took place via video (n = 37 cows). Repeatability and accuracy of the trainees was assessed using Fleiss's κ (FK) and Byrt's κ (BK) to examine group-level inter-rater agreement and expert-trainee agreement, respectively. The kappa systems use a scale of poor (<0), slight (0.01 to 0.20), fair (0.21 to 0.40), moderate (0.41 to 0.61), substantial (0.61 to 0.80), or almost perfect (0.81 to 1.00). At the conclusion of the workshop, FK was 0.66 for HI and 0.43 for LM, and BK mean (and range) was 0.85 (0.63 to 1.00) for HI and 0.66 (0.56 to 0.85) for LM. Each trainee achieved perfect agreement for BCS [BK mean = 1.00 (1.00 to 1.00)] and each trainee achieved almost perfect agreement for CLN [BK mean 0.90 (0.82 to 0.94)]. After the follow-up video and 3 wk of experience, trainees achieved a FK of 0.66 and a BK mean of 0.74 (0.62 to 0.89) for LM. In conclusion, multiple assessors can achieve substantial agreement for ABM with adequate training.


Asunto(s)
Bienestar del Animal , Enfermedades de los Bovinos/prevención & control , Bovinos/fisiología , Industria Lechera/educación , Industria Lechera/métodos , Animales , Femenino , Vivienda para Animales , Cojera Animal , Tarso Animal
9.
J Dairy Sci ; 101(9): 8605-8614, 2018 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-29960780

RESUMEN

This review synthesizes a range of research findings regarding behavioral and production responses to health disorders and subsequent illness detection for herds using automatic (robotic) milking systems (AMS). We discuss the effects of health disorders on cow behavior and production, specifically those variables that are routinely recorded by AMS and associated technologies. This information is used to inform the resultant use of behavior and production variables and to summarize and critique current illness detection studies. For conventional and AMS herds separately, we examined research from the past 20 yr and those variables recorded automatically on-farm that may respond to development of illness and lameness. The main variables identified were milk yield, rumination time, activity, and body weight, in addition to frequency of successful, refused, and fetched (involuntary) milkings in AMS herds. Whether making comparisons within cow or between sick and healthy cows, consistent reductions in activity, rumination time, and milk yield are observed. Lameness, however, had obvious negative effects on milk yield but not necessarily on rumination time or activity. Finally, we discuss detection models for identifying lameness and other health disorders using routinely collected data in AMS, specifically focusing on their scientific validation and any study limitations that create a need for further research. Of the current studies that have worked toward disease detection, many data have been excluded or separated for isolated models (i.e., fresh cows, certain lactation groups, and cows with multiple illnesses or moderate cases). Thus, future studies should (1) incorporate the entire lactating herd while accounting for stage of lactation and parity of each animal; (2) evaluate the deviations that cows exhibit from their own baseline trajectories and relative to healthy contemporaries; (3) combine the use of several variables into health alerts; and (4) differentiate the probable type of health disorder. Most importantly, no model or software currently exists to integrate data and directly support decision-making, which requires further research to bridge the gap between technology and herd health management.


Asunto(s)
Industria Lechera/educación , Estudiantes/psicología , Animales , Bovinos , Enfermedades de los Bovinos , Femenino , Humanos , Lactancia , Leche , Embarazo
11.
Int J Food Sci Nutr ; 68(1): 117-120, 2017 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-27580817

RESUMEN

The Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico is a five-century institution that, besides the unique clinical role in the center of Milan, may rely on benefactor donations such as fields and farming houses not far from the city, for a total of 8500 ha, all managed by the "Sviluppo Ca' Granda' Foundation". Presently, the main products of these fields are represented by rice and cow's milk. During the latest years, farmers and managers have developed a model of sustainable food production, with great attention to the product quality based on compositional analysis and functional nutritional characteristics. This experience represents a new holistic model of food production and consumption, taking great care of both sustainability and health.


Asunto(s)
Conservación de los Recursos Naturales , Producción de Cultivos/métodos , Industria Lechera/métodos , Calidad de los Alimentos , Estado de Salud , Modelos Biológicos , Animales , Bovinos , Conservación de los Recursos Naturales/economía , Conservación de los Recursos Naturales/tendencias , Producción de Cultivos/economía , Producción de Cultivos/educación , Producción de Cultivos/tendencias , Productos Agrícolas/química , Productos Agrícolas/crecimiento & desarrollo , Industria Lechera/economía , Industria Lechera/educación , Industria Lechera/tendencias , Fundaciones , Salud Global , Índice Glucémico , Promoción de la Salud , Humanos , Italia , Leche/química , Estudios de Casos Organizacionales , Oryza/química , Oryza/crecimiento & desarrollo , Evaluación de Programas y Proyectos de Salud , Semillas/química , Semillas/crecimiento & desarrollo
12.
Prev Vet Med ; 132: 20-31, 2016 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-27664445

RESUMEN

There is seen to be a need for better biosecurity - the control of disease spread on and off farm - in the dairy sector. Veterinarians play a key role in communicating and implementing biosecurity measures on farm, and little research has been carried out on how veterinarians see their own and farmers' roles in improving biosecurity. In order to help address this gap, qualitative interviews were carried out with 28 veterinarians from Royal College of Veterinary Surgeon farm accredited practices in England. The results were analysed using a social ecology framework and frame analysis to explore not only what barriers vets identified, but also how vets saw the problem of inadequate biosecurity as being located. Veterinarians' frames of biosecurity were analysed at the individual, interpersonal and contextual scales, following the social ecology framework, which see the problem in different ways with different solutions. Farmers and veterinarians were both framed by veterinarians as individualised groups lacking consistency. This means that best practice is not spread and veterinarians are finding it difficult to work as a group to move towards a "predict and prevent" model of veterinary intervention. But diversity and individualism were also framed as positive and necessary among veterinarians to the extent that they can tailor advice to individual farmers. Veterinarians saw their role in educating the farmer as not only being about giving advice to farmers, but trying to convince the farmer of their perspective and values on disease problems. Vets felt they were meeting with limited success because vets and farmers may be emphasising different framings of biosecurity. Vets emphasise the individual and interpersonal frames that disease problems are a problem on farm that can and should be controlled by individual farmers working with vets. According to vets, farmers may emphasise the contextual frame that biosecurity is largely outside of their control on dairy farms because of logistical, economic and geographical factors, and so some level of disease on dairy farms is not entirely unexpected or controllable. There needs to be a step back within the vet-farmer relationship to realise that there may be different perspectives at play, and within the wider debate to explore the question of what a biosecure dairy sector would look like within a rapidly changing agricultural landscape.


Asunto(s)
Crianza de Animales Domésticos , Enfermedades de los Bovinos/prevención & control , Industria Lechera , Crianza de Animales Domésticos/economía , Crianza de Animales Domésticos/educación , Animales , Bovinos , Enfermedades de los Bovinos/economía , Comunicación , Industria Lechera/economía , Industria Lechera/educación , Inglaterra , Conocimientos, Actitudes y Práctica en Salud , Promoción de la Salud/economía , Medidas de Seguridad/economía , Factores de Tiempo , Medicina Veterinaria
13.
J Vet Med Educ ; 43(1): 33-40, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26751909

RESUMEN

The increasing size and complexity of US dairy farms could make it more difficult for a veterinary practitioner to effectively communicate protocol recommendations for prevention or treatment on the farm. A continuing education workshop was set up based on the results of research on dairy organizational communication on dairy farms, which resulted in a tool to assess dairy communication structure and flow. The workshop specifically focused on communication structure and whom to talk to when implementing health care changes in calf rearing. In addition, modern methods of veterinary-client communication knowledge and skills were provided. Primary outcomes of the workshops were to obtain feedback from participants about research findings and the communication model, to improve awareness about the complexity of communication structures on dairy farms, and to change participants' knowledge and skills associated with on-farm communication by providing communication theory and skills and an approach to evaluate and improve dairy organizational communication. Of the 37 participants completing the pre-program assessment, most recognized a need for themselves or their practice to improve communication with clients and farm employees. After the program, most participants were confident in their new communication skills and would consider using them. They highlighted specific new ideas they could apply in practice, such as conducting a "communication audit." The results from the assessment of this communication workshop, focused on dairy veterinarians, highlighted the need for communication training in this sector of the profession and practitioners' desire to engage in this type of training.


Asunto(s)
Comunicación , Industria Lechera/educación , Educación Continua/métodos , Educación en Veterinaria/métodos , Percepción , Adulto , Anciano , Animales , Bovinos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Proyectos Piloto , Adulto Joven
14.
MMWR Morb Mortal Wkly Rep ; 64(42): 1202-3, 2015 Oct 30.
Artículo en Inglés | MEDLINE | ID: mdl-26513638

RESUMEN

On April 27, 2015, the Whatcom County Health Department (WCHD) in Bellingham, Washington, was notified by a local laboratory regarding three children with presumptive Escherichia coli O157 infection. WCHD interviewed the parents, who indicated that all three children had attended a dairy education event held in a barn April 20­24, 2015, during a school field trip. WCHD, the Washington State Department of Health, and CDC investigated to determine the magnitude of the outbreak, identify risk factors and potential environmental sources of infection, and develop recommendations. A total of 60 cases (25 confirmed and 35 probable) were identified, and 11 patients were hospitalized.


Asunto(s)
Industria Lechera/educación , Brotes de Enfermedades , Infecciones por Escherichia coli/epidemiología , Escherichia coli O157/aislamiento & purificación , Animales , Bovinos , Niño , Microbiología Ambiental , Humanos , Estudiantes/estadística & datos numéricos , Washingtón/epidemiología
15.
J Dairy Sci ; 98(11): 8240-4, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26364093

RESUMEN

Recent changes in the US dairy industry include increases in herd size and the proportion of milk that is produced by large herds. These changes have been accompanied by an increased reliance on hired employees and an increasing role of immigrant labor to perform critical tasks such as milking cows. Thus, there is a growing need for training and education programs for dairy employees because many employees lack previous dairy experience and employee turnover rates are problematic on many farms. Although extension programs have played an important role in the education and support of dairy producers and allied professionals in attaining improved milk quality, dairy employees have limited access to educational programs. Additionally, metrics to assess employee learning are not validated and the ability to sustain work-related behavioral change has not been well described. In this article, we propose a model that may further our understanding of communication and cultural barriers between dairy managers and employees, based on a demonstration project in 12 Michigan dairy herds. As part of this demonstration, a pilot survey was tested to assess the management culture on dairy farms. Results from this survey found that only 23% of employees across all herds were able to meet with farm management on a regular basis, 36% of employees did not know somatic cell count goals for the farm for which they worked, and 71% of employees stated they primarily received training on milking protocols by other employees or that they learned on their own. Latino employees were more likely to not know farm goals or receive primary training on milking protocols from other employees or on their own compared with their English-speaking counterparts. The survey information, along with input from focus group discussions with participating dairy producers, veterinarians, and employees, suggests that extension needs to build capacity for on-farm training and education for employees to support their engagement within dairy operations.


Asunto(s)
Industria Lechera/educación , Industria Lechera/métodos , Mastitis Bovina/prevención & control , Animales , Bovinos , Recuento de Células , Femenino , Lactancia , Michigan , Leche/metabolismo , Nutricionistas , Estados Unidos , Veterinarios
16.
J Dairy Sci ; 98(4): 2419-26, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25648804

RESUMEN

As a proactive measure toward controlling the nontreatable and contagious Johne's disease in cattle, the Ontario dairy industry launched the voluntary Ontario Johne's Education and Management Assistance Program in 2010. The objective of this study was to describe the results of the first 4 yr of the program and to investigate the variability in Risk Assessment and Management Plan (RAMP) scores associated with the county, veterinary clinic, and veterinarian. Of 4,158 Ontario dairy farms, 2,153 (51.8%) participated in the program between January 2010 and August 2013. For this study, RAMP scores and whole-herd milk or serum ELISA results were available from 2,103 farms. Herd-level ELISA-positive prevalence (herds with one or more test-positive cows were considered positive) was 27.2%. Linear mixed model analysis revealed that the greatest RAMP score variability was at the veterinarian level (24.2%), with relatively little variability at the county and veterinary clinic levels. Consequently, the annual RAMP should be done by the same veterinarian to avoid misleading or discouraging results.


Asunto(s)
Enfermedades de los Bovinos/prevención & control , Industria Lechera/educación , Industria Lechera/métodos , Paratuberculosis/prevención & control , Medición de Riesgo , Agricultura , Animales , Anticuerpos Antibacterianos/análisis , Anticuerpos Antibacterianos/sangre , Bovinos , Enfermedades de los Bovinos/epidemiología , Conducta Cooperativa , Ensayo de Inmunoadsorción Enzimática/veterinaria , Femenino , Leche/microbiología , Mycobacterium avium subsp. paratuberculosis/inmunología , Ontario/epidemiología , Paratuberculosis/epidemiología , Paratuberculosis/microbiología
17.
Prev Vet Med ; 113(4): 522-35, 2014 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-24485275

RESUMEN

Diagnostic strategies to detect contagious mastitis caused by Mycoplasma bovis, Staphylococcus aureus, and Streptococcus agalactiae in dairy herds during an outbreak have been minimally studied with regard to cost and diagnostic sensitivity. The objective of this cross-sectional study was to compare the cost-effectiveness of diagnostic strategies for identification of infected cows in two California dairy herds during contagious mastitis outbreaks. M. bovis was investigated in a subset of a herd (n=1210 cows) with an estimated prevalence of 2.8% (95% CI=1.9, 3.7), whereas Staph. aureus and Strep. agalactiae were studied in a second herd (n=351 cows) with an estimated prevalence of 3.4% (95% CI=1.5, 5.3) and 16.8% (95% CI=12.9, 20.7), respectively. Diagnostic strategies involved a combination of testing stages that utilized bacterial culture, quantitative real-time PCR (qPCR), or both. Strategies were applied to individual or pooled samples of 5, 10, 50 or 100 samples. Culture was considered the gold standard for sensitivity estimation of each strategy. The reference strategy was the strategy with the lowest cost per culture-positive cow which for both M. bovis and Strep. agalactiae consisted of 2 stages, culture of samples in pools of 5 followed by culture of individual samples in positive pools with a sensitivity of 73.5% (95% CI: 55.6, 87.1) and 96.6% (95% CI: 27.7, 84.8), respectively. The reference strategy for Staph. aureus consisted of 3 stages, culture of individual samples in pools of 100 (stage 1), culture constituents of those positive from stage 1 in pools of 5 (stage 2), culture constituents of those positive from stage 2 individually (stage 3) which resulted in a sensitivity of 58.3% (95% CI: 88.3, 99.6). The most cost-effective alternative to the reference strategy was whole herd milk culture for all 3 pathogens. QPCR testing was a component of the second most cost-effective alternative for M. bovis and the third most cost-effective alternatives for the 3 pathogens. A stochastic model was used to assess the effect of prevalence or herd size on the cost-effectiveness of diagnostic strategies. In the current study, increasing the prevalence of mastitis did not alter the ranking of strategies by cost-effectiveness. However, larger herds could benefit from testing larger pools such as 50 or 100 samples to improve cost-effectiveness. Several diagnostic strategy options exist to identify contagious mastitis in herds, decisions should be based on cost and sensitivity of the strategies available.


Asunto(s)
Recuento de Colonia Microbiana/veterinaria , Industria Lechera/economía , Mastitis Bovina/diagnóstico , Infecciones por Mycoplasma/veterinaria , Reacción en Cadena en Tiempo Real de la Polimerasa/veterinaria , Infecciones Estafilocócicas/veterinaria , Infecciones Estreptocócicas/veterinaria , Animales , California/epidemiología , Bovinos , Análisis Costo-Beneficio , Estudios Transversales , Industria Lechera/educación , Femenino , Mastitis Bovina/epidemiología , Mastitis Bovina/microbiología , Leche/microbiología , Infecciones por Mycoplasma/diagnóstico , Infecciones por Mycoplasma/epidemiología , Infecciones por Mycoplasma/microbiología , Mycoplasma bovis/aislamiento & purificación , Densidad de Población , Prevalencia , Infecciones Estafilocócicas/diagnóstico , Infecciones Estafilocócicas/epidemiología , Infecciones Estafilocócicas/microbiología , Staphylococcus aureus/aislamiento & purificación , Infecciones Estreptocócicas/diagnóstico , Infecciones Estreptocócicas/epidemiología , Infecciones Estreptocócicas/microbiología , Streptococcus agalactiae/aislamiento & purificación
18.
Anim Sci J ; 85(3): 323-9, 2014 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-23981006

RESUMEN

The understanding of animal products and dairy farming is important for the promotion of dairy farming. Thus, to examine the effects of farm experience on the understanding of animal products and the management of dairy farming, the interaction between students and dairy cows was investigated in groups of first-year veterinary nursing students in 2011 and 2012 (n = 201). These students included 181 women and 20 men. Nine items about dairy cows were presented in a questionnaire. The survey was performed before and after praxis on the educational farm attached to the authors' university. After praxis on the farm, increases occurred in the number of positive responses to the items involving the price of milk, dairy farming and the taste of milk. For these items, a significant difference (P < 0.05) was found between the scores obtained before and after training. The results of the study suggested that farm experience is useful for improving the understanding of animal products and dairy farming.


Asunto(s)
Técnicos de Animales/educación , Productos Lácteos , Industria Lechera/educación , Agricultura/educación , Animales , Bovinos , Japón , Encuestas y Cuestionarios
20.
J Dairy Sci ; 96(11): 7340-7348, 2013.
Artículo en Inglés | MEDLINE | ID: mdl-24054299

RESUMEN

Demographic and management data about organic dairies have been reported previously, but the current study is the first needs assessment of research and educational priorities of organic dairy farmers in the northeastern United States based directly upon their input. Our objectives were to (1) develop an initial understanding of the emerging research and educational needs of organic dairy farmers in the northeastern United States via focus group interviews, and (2) prioritize the needs identified by the focus groups with a broader population of organic dairy farmers via survey methods. Focus group interviews determined the questions used for the survey questionnaire distributed to 1,200 members of the Northeast Organic Dairy Producers Alliance. The members were asked about demographic information, but more importantly, challenges concerning business management and marketing, organic certification, and animal nutrition, health, and reproduction. The results (183 respondents, 15% response rate) were parsed by region (New England farms compared with New York and Pennsylvania farms), herd size (i.e., 12 to 37, 38 to 59, and >60 cows), and years of organic certification (<4 yr vs. ≥ 4 yr); however, no differences between regions were observed for demographic data. The average farm consisted of 309 acres and 57 milking cows, on which most of the forage was homegrown but grains were purchased (73% of farms). Among the greatest challenges identified by the farmers were obtaining a steady, fair price for milk (85% respondents); determining dry matter intake for animals on pasture (76%); and controlling nuisance flies (89%). Needs for additional research included organic treatments for mastitis (92% respondents), growing forages for organic production (84%), and developing value-added products (84%). Farms with <4 yr of organic certification were concerned with level of knowledge and experience of local certifiers, whereas organic producers with ≥ 4 yr of organic certification were more interested in field testing of new organic products. Opportunities for educational programs included learning about direct marketing possibilities (76% respondents) and providing training to regional veterinarians interested in organic remedies (91%). In conclusion, the information obtained from the current needs assessment provides a foundation for future research proposals and educational outreach programs, germane to stakeholder needs, which could benefit the organic dairy industry within the region and beyond.


Asunto(s)
Investigación Biomédica/tendencias , Productos Lácteos/normas , Industria Lechera/educación , Evaluación de Necesidades , Agricultura Orgánica/educación , Fenómenos Fisiológicos Nutricionales de los Animales , Animales , Bovinos , Industria Lechera/normas , Educación en Veterinaria , Femenino , Mastitis Bovina/terapia , Leche , New England , Agricultura Orgánica/normas , Reproducción , Veterinarios
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