RESUMEN
Beef production has been identified as a significant source of anthropogenic greenhouse gas (GHG) emissions in the agricultural sector. United States and Canada account for about a quarter of the world's beef supply. To compare the GHG emission contributions of alternative beef production systems, we conducted a meta-analysis of 32 studies that were conducted between 2001 and 2023. Results indicated that GHG emissions from beef production in North America varied almost fourfold from 10.2 to 37.6 with an average of 21.4 kg CO2e/kg carcass weight (CW). Studies that considered soil C sequestration (C-seq) reported the highest mitigation potential in GHG emissions (80%), followed by growth enhancement technology (16%), diet modification (6%), and grazing management improvement (7%). Our study highlights the implications of using carbon intensity per economic activity (i.e., GHG emissions per monetary unit), compared to the more common metric of intensity on per weight of product basis (GHG emissions per kg CW) for comparisons across differentiated beef cattle products. While a positive association was found between the proportion of lifespan on grassland and the conventional weight-based indicator, grass-finished beef was found to have lower carbon intensity per economic activity than feedlot-finished beef. Our study emphasizes the need to incorporate land use and management effects and soil C-seq as fundamental aspects of beef GHG emissions and mitigation assessments.
Asunto(s)
Gases de Efecto Invernadero , Carne Roja , Animales , Bovinos , Gases de Efecto Invernadero/análisis , Carne Roja/economía , Canadá , Crianza de Animales Domésticos/métodos , Crianza de Animales Domésticos/economía , Estados Unidos , Agricultura/economía , Agricultura/métodos , Efecto Invernadero , Cambio ClimáticoRESUMEN
Food system transformation requires a better understanding of the negative and positive externalities involved in food production and consumption. Although negative externalities have received substantial attention, positive externalities have been largely overlooked. True Cost Accounting (TCA) is an economic assessment aimed at accounting for externalities in food systems. The beef industry is an important part of the US food system. In the western USA, beef cattle production is a major land use and economic activity that involves direct links among the cattle, range ecosystems, range management, climate, and ranchers' decisions and welfare. We present a case study based on a TCA assessment to quantify and monetize the contribution of human, social, natural, and produced capitals, as well as farm structure, to the market value generated by cow-calf operations, a key component of the USA beef industry. We estimated an Ordinary Least Square regression model based on indicators of these capitals and of farm structure derived from publicly available data sources at the county level. From model coefficients, we estimated the marginal revenue product of these factors. Results show that nonmarket factors linked with human and social capitals support market performance by contributing to the market value of cow-calf production. These factors operate at scales above the ranch, usually remain hidden, and seldomly are considered in policy decision-making which can lead to policies that inadvertently hamper or eliminate these positive externalities.
Asunto(s)
Crianza de Animales Domésticos , Bovinos , Animales , Humanos , Estados Unidos , Crianza de Animales Domésticos/economía , Modelos Económicos , Granjas/economía , Carne Roja/economíaRESUMEN
This study determined consumers' attitudes towards physical and mental wellness related to red meat consumption and their willingness to pay (WTP) more for the meat. In 2019, two online surveys of red meat eaters were conducted in the USA (n = 1000) and Australia (n = 523) using commercial platforms. Results showed that over 90% of respondents indicated interest in purchasing red meat to improve their wellness status. Additionally, about 85% indicated their WTP more for red meat for its wellness benefits, with Americans indicating stronger willingness than Australian respondents. The potential of meat consumption to improve overall wellness among red meat eaters was a dominant factor influencing consumers' WTP more. Other factors that increased WTP included frequency of meat consumption, physical exercise, sleep quality, number of children in a household, partnership status, and economic position. Outcomes from this study highlight a unique opportunity for the meat industry to position meat on its qualities that include wellness improvement if backed up with robust scientific evidence.
Asunto(s)
Comportamiento del Consumidor , Carne Roja , Humanos , Australia , Estados Unidos , Carne Roja/economía , Masculino , Femenino , Adulto , Persona de Mediana Edad , Encuestas y Cuestionarios , Adulto Joven , Adolescente , Animales , Anciano , Ejercicio FísicoRESUMEN
Beef demand has progressively decreased due to an increasing number of consumers who perceive beef as harmful to their health, among other causes. In contrast, functional foods are one of the fastest-growing markets. This study aims to analyse consumer preferences and estimates the willingness to pay for beef enriched with omega-3 fatty acids. We intend to identify and profile the potential market segments for functional beef and determine how the provision of information can affect consumer preferences. Data have been collected by applying a choice experiment on a sample of 757 Italian beef purchasers. The sample was randomly split into two information treatments plus a control group. Participants in the information treatments were given an explanation about the functional meat production system. Results showed that the average consumer has a preference for ω-3 enrichment and that information about the food's production process increases this preference. Therefore, the study reveals the existence of a potentially profitable market for functional beef.
Asunto(s)
Comportamiento del Consumidor , Ácidos Grasos Omega-3 , Alimentos Funcionales , Carne Roja/análisis , Adulto , Animales , Bovinos , Conducta de Elección , Femenino , Preferencias Alimentarias , Humanos , Italia , Masculino , Persona de Mediana Edad , Carne Roja/economía , Encuestas y CuestionariosRESUMEN
Life cycle assessments (LCA) often highlight the environmental and health benefits for consumers if western diets substitute red meat. However, the specific trade-off consumer face when asked to substitute a red meat dish is scarcely researched, often neglecting the bouquet of substitution options and/or the price component involved. Four substitution strategies are evaluated within an individually adapted choice based conjoint: the substitution by (1) the same red meat dishes with a halved meat portion size, (2) novel plant-based products that mimic the functionality and taste, (3) authentic plant-based components that just mimic the functionality, and (4) vegetarian dishes that just neglect the meat component if still familiar to consumers. The analysis is executed for three popular red meat dishes to account for consistency across meal scenarios, namely Meatballs, Spaghetti Bolognese and Sausage Buns. The analysis is sensitive to red meat consumption habits to better understand the preferences of consumers that can actually substitute a red meat intake.
Asunto(s)
Conducta de Elección/fisiología , Preferencias Alimentarias/fisiología , Carne Roja/economía , Gusto , Algoritmos , Comportamiento del Consumidor/economía , Estudios Transversales , Conducta Alimentaria , Humanos , Internet , Encuestas y Cuestionarios/economía , Encuestas y Cuestionarios/estadística & datos numéricosRESUMEN
China has experienced significant economic growth in recent decades, and this has accounted for an increase in meat consumption. Therefore, it is important to understand the underlying factors of consumers' perception and purchasing behaviour of lamb meat in China. This study adopts a conceptual framework, which includes expectations, perception, and purchase behaviour of red meat among Chinese consumers. A total of 31 questions were included in a self-administered questionnaire through an online platform, with 601 meat consumers who participated in this study. Results showed that Australian and New Zealand meat were perceived as having positive quality characteristics (e.g. natural, reliable) followed by Chinese local meat. Partial Least Squares Path Modelling (PLS-PM) further identified that the key drivers that influenced meat purchase were seasonality, purchase location, and consumer experience particularly in cooking methods used. Purchase point for Chinese consumers were equally weighed with butchers, supermarket, and traditional market as being the most common purchase locations. Unexpectedly, Chinese consumers were found to consume less meat in summer and more during winter. Purchase drivers included meat safety certification and the perceived health benefits of meat.
Asunto(s)
Comportamiento del Consumidor/estadística & datos numéricos , Carne Roja/normas , Adulto , Animales , China , Comportamiento del Consumidor/economía , Femenino , Calidad de los Alimentos , Humanos , Masculino , Persona de Mediana Edad , Carne Roja/economía , Carne Roja/estadística & datos numéricos , Estaciones del Año , Ovinos , Encuestas y Cuestionarios , Adulto JovenRESUMEN
Conventional empirical studies of foodborne-disease outbreaks (FDOs) in agricultural markets are linear-stochastic formulations hardwiring a world in which markets self-correct in response to external random shocks including FDOs. These formulations were unequipped to establish whether FDOs cause market reaction, or whether markets endogenously propagate outbreaks. We applied nonlinear time series analysis (NLTS) to reconstruct annual dynamics of FDOs in US cattle markets from CDC outbreak data, live cattle futures market prices, and USDA cattle inventories from 1967-2018, and used reconstructed dynamics to detect causality. Reconstructed deterministic nonlinear market dynamics are endogenously unstable-not self-correcting, and cattle inventories drive futures prices and FDOs attributed to beef in temporal patterns linked to a multi-decadal cattle cycle undetected in daily/weekly price movements investigated previously. Benchmarking real-world dynamics with NLTS offers more informative and credible empirical modeling at the convergence of natural and economic sciences.
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Bovinos , Costos y Análisis de Costo/estadística & datos numéricos , Brotes de Enfermedades/estadística & datos numéricos , Enfermedades Transmitidas por los Alimentos/epidemiología , Mercadotecnía/estadística & datos numéricos , Carne Roja/economía , Agricultura/economía , Agricultura/estadística & datos numéricos , Animales , Monitoreo Epidemiológico , Humanos , Mercadotecnía/economía , Modelos EstadísticosRESUMEN
The lack of public understanding of frozen meat encourages consumers to buy only fresh meat, which has caused imported frozen meat to remain unabsorbed by the market despite the growing demand for meat. This study aims to analyze consumer perceptions that affect the intention to purchase frozen meat, which is mediated by the attitude toward frozen meat. Several factors were tested: perceived nutritional content, perceived sensory appeal, and perceived price. The method used in this study is quantitative ̶ an online questionnaire collects data from 536 customers who are the buyers and decision-makers in buying meat in their household. Structural equation modeling (SEM) was used to analyze the data. The results of this study indicate that higher consumer perceptions of nutritional content, sensory appeal, and price lead to higher attitudes toward frozen meat and in turn, increase purchase intention.
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Comportamiento del Consumidor , Alimentos Congelados/economía , Carne Roja/economía , Adulto , Animales , Bovinos , Femenino , Alimentos Congelados/análisis , Humanos , Indonesia , Intención , Masculino , Valor Nutritivo , Carne Roja/análisis , Encuestas y CuestionariosRESUMEN
Marbling score (MS) is related to beef auction price (AP) in Korea, but how these relate to marbling texture (i.e. number and distribution of marbling particles [MPs]) is not known. We examined relationships among carcass traits, carcass AP, and image analysis marbling texture traits. In experiment 1, carcass data and longissimus thoracis (LT) were obtained from Korean cattle steers reared under similar feeding conditions. MS, quality grade (QG), and AP were related (P < 0.001) to numbers of coarse MPs and fine MPs and fineness index. In experiment 2, LT images photographed at a slaughterhouse were used in regression analysis within individual QG classes (QGs: 1 [middle], 1+, and 1++ [best]). AP was related (P < 0.001) to numbers of coarse MPs and fine MPs and fineness index in both QGs 1+ and 1++ but not in QG 1. Overall, several marbling texture traits were related to AP, but both MS and QG were more strongly related to AP.
Asunto(s)
Músculo Esquelético , Carne Roja/economía , Carne Roja/normas , Tejido Adiposo/anatomía & histología , Animales , Composición Corporal , Bovinos , Calidad de los Alimentos , Procesamiento de Imagen Asistido por Computador , Masculino , República de CoreaRESUMEN
Though the international trade in agricultural commodities is worth more than $1.6 trillion/year, we still have a poor understanding of the supply chains connecting places of production and consumption and the socioeconomic and environmental impacts of this trade. In this study, we provide a wall-to-wall subnational map of the origin and supply chain of Brazilian meat, offal, and live cattle exports from 2015 to 2017, a trade worth more than $5.4 billion/year. Brazil is the world's largest beef exporter, exporting approximately one-fifth of its production, and the sector has a notable environmental footprint, linked to one-fifth of all commodity-driven deforestation across the tropics. By combining official per-shipment trade records, slaughterhouse export licenses, subnational agricultural statistics, and data on the origin of cattle per slaughterhouse, we mapped the flow of cattle from more than 2,800 municipalities where cattle were raised to 152 exporting slaughterhouses where they were slaughtered, via the 204 exporting and 3,383 importing companies handling that trade, and finally to 152 importing countries. We find stark differences in the subnational origin of the sourcing of different actors and link this supply chain mapping to spatially explicit data on cattle-associated deforestation, to estimate the "deforestation risk" (in hectares/year) of each supply chain actor over time. Our results provide an unprecedented insight into the global trade of a deforestation-risk commodity and demonstrate the potential for improved supply chain transparency based on currently available data.
Asunto(s)
Crianza de Animales Domésticos/economía , Comercio , Conservación de los Recursos Naturales , Internacionalidad , Animales , Brasil , Bovinos , Productos de la Carne/economía , Carne Roja/economíaRESUMEN
The rising public health threat of antimicrobial resistance, the influence of food service companies, as well as the overall lack of positive image of using medical products in intensive farming are major drivers curbing antimicrobial use. In the future, government policies may affect practices of antimicrobial use in beef production in feedlots, a prominent current user of antimicrobials in animal agriculture, but also the agricultural industry generating the highest cash receipt in the U.S. Our objective was to estimate the cost effect from the following policies in feedlots: 1) using antimicrobials for disease prevention, control, and treatment; 2) using antimicrobials only for treatment of disease; and 3) not using antimicrobials for any reason. We modelled a typical U.S. feedlot, where high risk cattle may be afflicted by diseases requiring antimicrobial therapy, namely respiratory diseases, liver abscesses and lameness. We calculated the net revenue loss under each policy of antimicrobial use restriction. With moderate disease incidence, the median net revenue loss was $66 and $96 per animal entering the feedlot, for not using antimicrobials for disease prevention and control, or not using any antimicrobials, respectively, compared to using antimicrobials for disease prevention, control, and treatment. Losses arose mainly from an increase of fatality and morbidity rates, almost doubling for respiratory diseases in the case of antimicrobial use restrictions. In the case of antimicrobial use prohibition, decreasing the feeder cattle price by 9%, or alternatively, increasing the slaughter cattle price by 6.3%, would offset the net revenue losses for the feedlot operator. If no alternatives to antimicrobial therapy for prevention, control and treatment of current infectious diseases are implemented, policies that economically incentivize adoption of non-antimicrobial prevention and control strategies for infectious diseases would be necessary to maintain animal welfare and the profitability of beef production while simultaneously curbing antimicrobial use.
Asunto(s)
Crianza de Animales Domésticos/economía , Antibacterianos/normas , Enfermedades de los Bovinos/tratamiento farmacológico , Granjas/economía , Políticas , Crianza de Animales Domésticos/normas , Bienestar del Animal/economía , Bienestar del Animal/normas , Animales , Antibacterianos/farmacología , Antibacterianos/uso terapéutico , Bovinos , Enfermedades de los Bovinos/economía , Enfermedades de los Bovinos/epidemiología , Enfermedades de los Bovinos/microbiología , Simulación por Computador , Costo de Enfermedad , Análisis Costo-Beneficio , Farmacorresistencia Bacteriana , Granjas/normas , Incidencia , Modelos Económicos , Carne Roja/economíaRESUMEN
INTRODUCTION: The use of antibiotics in Swiss veal production is considered an established method for controlling bacterial infectious diseases. Although the veterinary profession aims to ensure animal welfare, the veterinary business income needs to be ensured at the same time. Against the background of increasing problems with resistant pathogens in human and veterinary medicine, the use of antibiotics should be significantly reduced and used more selectively. The associated economic consequences for food animal practitioners are unknown. The aim of this study was to determine the economic importance of antibiotic sale volume for private food animal practitioners in veal production. An anonymized questionnaire was sent to 120 mixed veterinary practices in Switzerland, which offered services to veal and beef cattle farmers. Questions involved the pharmaceutical sale volume, details on veterinary invoices from three farms with average, below and above average animal health throughout 2017. Twenty-nine complete questionnaires (response rate: 24.2%) and veterinary invoices of 84 farms were returned. The study is not representative, but it allows a rough assessment of the economic framework in Swiss livestock practice. The majority of the total turnover with livestock farms was generated by the sale of antibiotics (54%). Antibiotic sales per animal were higher as expected in farms with a below-average animal health than in farms with an average or above-average animal health. Consulting services turnover contributed only 0.5% to the total sale volume in veal farming. The results document, that antibiotic reduction measurements in veal and beef production will have economic consequences for veterinary livestock practices. In the medium term, the profitable existence of livestock veterinary practice requires a change to cost based consulting services.
INTRODUCTION: En Suisse, dans le cadre de la pratique de l'engraissement des veaux, l'utilisation d'antibiotiques est principalement considérée comme une méthode éprouvée pour lutter contre les maladies infectieuses bactériennes. L'activité vétérinaire vise à prévenir ou minimiser les souffrances chez les animaux. Mais pour autant, les vétérinaires restent des entrepreneurs qui doivent assurer un revenu adéquat de leur pratique. Dans un contexte de problèmes croissants rencontrés avec les agents pathogènes résistants en médecine humaine et vétérinaire, l'utilisation d'antibiotiques devrait être considérablement réduite et ciblée. Les conséquences économiques associées pour la pratique vétérinaire rurale sont peu connues. Le but de la présente étude était de déterminer l'importance économique des ventes d'antibiotiques pour les pratiques vétérinaires rurales privées en utilisant l'exemple de l'engraissement des veaux. À cet effet, un questionnaire anonymisé a été envoyé à 120 cabinets vétérinaires mixtes en Suisse, qui s'occupent entre autres d'exploitations d'engraissement de veaux, de broutards et de taurillons. Les participants ont été interrogés sur le niveau des ventes de médicaments. En outre, nous les avons invités à envoyer des factures vétérinaires concernant trois entreprises d'engraissement avec un niveau de santé animale inférieur, égal et supérieur à la moyenne tout au long de l'année 2017. Vingt-neuf questionnaires complets (taux de réponse: 24,2%) ainsi que des factures vétérinaires concernant au total 84 exploitations d'engraissement de veaux, de broutards ou de taurillons nous ont été retournés. L'étude n'est certes pas représentative, mais elle permet une évaluation approximative du cadre économique des pratiques rurales en Suisse. La majorité du chiffre d'affaires total sur les exploitations d'engraissement de veaux, de broutards ou taurillons a été générée par la vente d'antibiotiques (54%). Il apparait que les ventes d'antibiotiques étaient plus élevées dans les exploitations où la santé animale était inférieure à la moyenne que dans les établissements où elle était supérieure ou égale à la moyenne. Le chiffre d'affaires des prestations de conseil ne représentait que 0,5% du chiffre d'affaires total dans le domaine des veaux. Ces résultats montrent que les mesures visant à réduire les antibiotiques dans les conditions actuelles de production de veau et de boeuf auront probablement des conséquences économiques non négligeables sur la part des exploitations d'engraissement dans les revenus des pratiques vétérinaire rurales. A moyen terme, afin d'assurer la rentabilité d'une pratique rurale, une nouvelle orientation de l'activité vétérinaire sera nécessaire: la mise en place d'un service de conseils payants pour les exploitations d'engraissement, ayant pour but l'établissement de concepts de prévention.
Asunto(s)
Crianza de Animales Domésticos/economía , Crianza de Animales Domésticos/métodos , Antibacterianos/economía , Carne Roja , Crianza de Animales Domésticos/normas , Animales , Bovinos , Carne Roja/economía , Carne Roja/normas , SuizaRESUMEN
In this study, Salmonella isolates recovered from meat (beef and mutton) and meat contact surfaces at retail were investigated to determine their serotype, antibiotic resistance, and biofilm formation ability. Salmonella was found in 29 (24.17%) samples out of 120 samples including 14/50 (28%) of beef, 10/40 (25%) of mutton, and 5/30 (16.67%) of meat contact surfaces. Seven isolates were identified as S. Enteritidis, three as S. Typhimurium, and two as S. Typhi, while the rest of the isolates were considered as other Salmonella spp. All of the isolates were resistant to at least one antimicrobial agent and 48.27% of them were identified as multidrug-resistant (MDR) Salmonella. All (100%) of meat contact surfaces isolates, 42.8% of beef isolates, and 30% of mutton isolates were found to be MDR Salmonella. Resistance to nalidixic acid (100%), tetracycline (79.3%), and sulphamethoxazole/trimethoprim (44.8%) were observed. The gyrA gene was detected in 19 of 29 isolates, but tetA was found in one isolate. All of the serotypes were able to form biofilm (75.86 % moderate and 24.14 % strong) and S. Enteritidis was the strongest biofilm producer. The findings indicated that the majority of Salmonella isolates in this study were MDR and biofilm producer. Then, safety measures such as cleaning and disinfection must be taken to control Salmonella and promote public health. PRACTICAL APPLICATION: The present study provides useful information on the prevalence of Salmonella serotypes in meat and meat contact surfaces and their antibiotic resistance patterns as well as biofilm formation capacities. Improving hygiene practices in livestock, slaughterhouses, and at retails may reduce the risk of meat contamination to Salmonella. Meanwhile, high levels of antibiotic resistance in Salmonella isolates emphasized on the improper use of antibiotics.
Asunto(s)
Biopelículas , Farmacorresistencia Bacteriana Múltiple , Carne Roja/microbiología , Salmonella/efectos de los fármacos , Salmonella/fisiología , Mataderos , Animales , Antibacterianos/farmacología , Bovinos , Contaminación de Alimentos/análisis , Humanos , Pruebas de Sensibilidad Microbiana , Carne Roja/economía , Salmonella/clasificación , Salmonella/genética , Serogrupo , OvinosRESUMEN
Bovine respiratory disease (BRD) is a persistent negative economic impact on beef and dairy industries and the inability to show any progress in controlling BRD is a source of increasing frustration among animal health professionals and the industry. The complex economic structure of the cattle industry leads to market failures in which cow-calf producers do not have sufficient economic incentive to invest in improved BRD control. This leads to higher costs for stocker and feedlot sectors. An industry-wide comprehensive effort is needed to coordinate and motivate enhanced BRD control focusing on producing healthy calves with less morbidity rather than treatment.
Asunto(s)
Crianza de Animales Domésticos/economía , Complejo Respiratorio Bovino/economía , Crianza de Animales Domésticos/métodos , Animales , Complejo Respiratorio Bovino/prevención & control , Bovinos , Industria Lechera/economía , Industria Lechera/métodos , Femenino , Mercadotecnía/economía , Carne Roja/economía , Enfermedades RespiratoriasRESUMEN
This study investigates the substitution and complementary effects for beef mince attributes drawing on data from large choice experiments conducted in the UK and Spain. In both countries, consumers were found to be willing to pay a price premium for the individual use of the labels "Low Fat" (UK: 3.41, Spain: 1.94), "Moderate Fat" (UK: 2.23, Spain: 1.57), "Local" (UK: 1.54, Spain: 1.61), "National" (UK: 1.33, Spain: 1.37), "Organic" (UK: 1.02, Spain: 1.09) and "Low Greenhouse Gas Emissions (GHG)" (UK: 2.05, Spain: 0.96). The results showed that consumers in both countries do not treat desirable food attributes as unrelated. In particular, consumers in Spain are willing to pay a price premium for the use of the labels "Local", "Organic" and "Low GHG" on beef mince that is also labelled as having low or moderate fat content. By contrast, consumers in the UK were found to discount the coexistence of the labels "Low Fat" and "Organic", "Low Fat" and "Low GHG" and "Moderate Fat" and "Low GHG". The results, however, suggest that in the UK the demand for beef mince with moderate (low) fat content can be increased if it is also labelled as "Organic" or "Low GHG" ("Local").
Asunto(s)
Comportamiento del Consumidor/economía , Dieta con Restricción de Grasas/psicología , Etiquetado de Alimentos/economía , Preferencias Alimentarias/psicología , Carne Roja/economía , Adulto , Conducta de Elección , Comercio/estadística & datos numéricos , Dieta con Restricción de Grasas/economía , Femenino , Etiquetado de Alimentos/métodos , Alimentos Orgánicos/economía , Efecto Invernadero , Humanos , Masculino , España , Reino UnidoRESUMEN
The fall in lamb meat consumption makes it necessary to determine strategies to increase its consumption and the viability of livestock farms. Given this scenario, organic lamb meat emerges as a product with major growth potential. Using crisp-set qualitative comparative analysis (csQCA), this study analyses the profile of lamb meat consumers who decide against consuming organic lamb meat, identifying the main reasons they give for this decision. The findings reveal two majority segments of non-consumers of organic lamb meat, corresponding to 44.2% and 32.8% of conventional lamb meat consumers. In these segments, the main reasons given for non-consumption of lamb meat are, in the following order, supply, higher price and the lack of guarantees that the meat is actually organic. Thus, increasing organic lamb meat consumption necessarily involves greater efforts in the supply chain and greater promotion of information about the controls that guarantee the quality of certified organic lamb.
Asunto(s)
Comportamiento del Consumidor , Alimentos Orgánicos/economía , Carne Roja/economía , Adulto , Anciano , Animales , Costos y Análisis de Costo , Alimentos Orgánicos/normas , Alimentos Orgánicos/provisión & distribución , Humanos , Persona de Mediana Edad , Carne Roja/normas , Carne Roja/provisión & distribución , OvinosRESUMEN
Our goal was to define a breeding objective for Brangus beef cattle in Brazil. Bioeconomic models were produced and used to estimate economic values (EVs). The scenarios simulated were typical full-cycle beef production systems that are used in tropical and subtropical regions. The breeding objective contained pregnancy rate (PR), warm carcass weight (WCW), mature cow weight (MCW), number of nematode eggs per gram of faeces (EPG) and tick count (TICK). Two models were used in series to estimate the EV. A deterministic model was used to simulate effects of PR, WCW and MCW on profitability with a constant parasite load. Subsequently, stochastic models were used to estimate economic values for TICK and EPG as consequences of their environmental effects on weight gains, mortality and health costs. The EV of PR, WCW, MCW, EPG and TICK, was US$1.59, US$2.11, -US$0.24, -US$5.35 and -US$20.88, respectively. Results indicate positive emphasis should be placed on PR (12.49%) and WCW (65.07%) with negative emphasis on MCW (13.92%), EPG (2.77%) and TICK (5.75%). In comparison with the indexes usually used, these results suggest a reformulation in the selection indexes of the beef production system in tropical and subtropical regions in order to obtain greater profitability.
Asunto(s)
Cruzamiento , Bovinos/fisiología , Animales , Peso Corporal , Brasil , Cruzamiento/economía , Bovinos/crecimiento & desarrollo , Bovinos/parasitología , Costos y Análisis de Costo , Femenino , Masculino , Modelos Económicos , Carga de Parásitos , Embarazo , Índice de Embarazo , Carne Roja/economía , Carne Roja/parasitología , Selección GenéticaRESUMEN
The cattle tick Rhipicephalus microplus causes significant economic losses to cattle production systems and is a main barrier to the introduction of Bos taurus breeds and their crosses in Brazil. These breeds have the genetic potential to generate animals that are more productive, but they are also more susceptible to R. microplus. One of the alternatives for conventional tick control is the use of strategic control, aiming at delaying or even preventing the development of its resistance to acaricides. The present study aimed to evaluate the economic losses caused by tick infestation on the productive performance of two breeds of beef cattle and to evaluate the economic efficiency of tick strategic control and its impacts on beef cattle production systems. Animal weights were obtained from the literature and were used to calculate the weight loss in kilograms (kg) and the economic loss (US$) caused by R. microplus infestation. The cost/loss ratio of performing strategic control was also calculated. The data show that tick infestation causes economic losses to the breeds and groups of animals evaluated and reduces animal performance (weight loss). The results show a loss of US$34.61/animal in the backgrounding phase and US$7.97/animal in the finishing phase for Brangus animals and its crosses. In conclusion, the data show that strategic control is economically efficient for Brangus animals in the backgrounding phase, independent of the methods used for acaricide application.
Asunto(s)
Agricultura/economía , Enfermedades de los Bovinos/parasitología , Bovinos/parasitología , Rhipicephalus , Infestaciones por Garrapatas/veterinaria , Animales , Brasil , Carne Roja/economíaRESUMEN
The desire to increase profit on dairy farms necessitates consideration of the revenue attainable from the sale of surplus calves for meat production. However, the generation of calves that are expected to excel in efficiency of growth and carcass merit must not be achieved to the detriment of the dairy female and her ability to calve and re-establish pregnancy early postcalving without any compromise in milk production. Given the relatively high heritability of many traits associated with calving performance and carcass merit, and the tendency for many of these traits to be moderately to strongly antagonistic, a breeding index that encompasses both calving performance and meat production could be a useful tool to fill the void in supporting decisions on bull selection. The objective of the present study was to derive a dairy-beef index (DBI) framework to rank beef bulls for use on dairy females with the aim of striking a balance between the efficiency of valuable meat growth in the calf and the subsequent performance of the dam. Traits considered for inclusion in this DBI were (1) direct calving difficulty; (2) direct gestation length; (3) calf mortality; (4) feed intake; (5) carcass merit reflected by carcass weight, conformation, and fat and the ability to achieve minimum standards for each; (6) docility; and (7) whether the calf was polled. Each trait was weighted by its respective economic weight, most of which were derived from the analyses of available phenotypic data, supplemented with some assumptions on costs and prices. The genetic merit for a range of performance metrics of 3,835 artificial insemination beef bulls from 14 breeds ranked on this proposed DBI was compared with an index comprising only direct calving difficulty and gestation length (the 2 generally most important characteristics of dairy farmers when selecting beef bulls). Within the Angus breed (i.e., the beef breed most commonly used on dairy females), the correlation between the DBI and the index of genetic merit for direct calving difficulty plus gestation length was 0.74; the mean of the within-breed correlations across all other breeds was 0.87. The ranking of breeds changed considerably when ranked based on the top 20 artificial insemination bulls excelling in the DBI versus excelling in the index of calving difficulty and gestation length. Dairy breeds ranked highest on the index of calving difficulty and gestation length, whereas the Holstein and Friesian breeds were intermediate on the DBI; the Jersey breed was one of the poorest breeds on DBI, superior only to the Charolais breed. The results clearly demonstrate that superior carcass and growth performance can be achieved with the appropriate selection of beef bulls for use on dairy females with only a very modest increase in collateral effect on cow performance (i.e., 2-3% greater dystocia expected and a 6-d-longer gestation length).
Asunto(s)
Bovinos/fisiología , Leche/metabolismo , Carne Roja/economía , Animales , Cruzamiento/economía , Bovinos/genética , Bovinos/crecimiento & desarrollo , Comercio , Industria Lechera/economía , Femenino , Inseminación Artificial/veterinaria , Masculino , Fenotipo , EmbarazoRESUMEN
The increasing global population, limited resource availability, and global focus on reducing greenhouse gas (GHG) emissions put pressure on animal agriculture industries to critically evaluate and optimize the role they play in a sustainable food production system. The objective of this review is to summarize evidence of the various roles that the U.S. beef industry plays in the U.S. and global agricultural systems. As the world's largest beef producer, the United States reaps considerable economic benefit from the beef industry through strong domestic and international demand, as well as employment opportunities for many Americans. Beef production contributes to GHG emissions, land use, and water use, among other critical environmental impacts but provides an important source of essential micronutrients for human consumption. The U.S. beef industry provides sufficient product to meet the protein, vitamin B12, omega-3 and -6 fatty acid requirements of 43, 137, 47, and 487 million people, respectively. In the United States, beef production was estimated to account for 53% of GHG emissions from U.S. animal agriculture and 25% of GHG emissions from all of U.S. agriculture. Footprinting studies suggest that much of the land use and water use associated with beef production are attributed to the development of feed crops or pastureland. On a global scale, beef from U.S. origin is exported to numerous developed and developing countries, representing an important international nutrient routing. Along with other prominent beef-producing nations, the United States continues to pursue a greater level of sustainability in its cattle industry, which will bear important implications for future global food security. Efforts to reduce the environmental impacts of beef production will likely be the strongest drivers of enhanced sustainability.