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1.
Animals (Basel) ; 12(18)2022 Sep 13.
Artículo en Inglés | MEDLINE | ID: mdl-36139262

RESUMEN

Travellers and Gypsies are recognised ethnic groups in the UK and Ireland. Horse ownership is an important cultural tradition, however, practices associated with poor welfare are often perceived to be linked to these horse owning communities. Despite this, empirical studies on the welfare status of Traveller and Gypsy owned horses are lacking. To determine the welfare status of Traveller and Gypsy owned horses, 104 horses were assessed using a bespoke horse welfare protocol. This protocol assessed animal, resource and management-based measures. In addition, Qualitative Behaviour Assessment (QBA) identified horses' emotional state. Results indicated that 81% of horses had an optimal body condition score, with no horse recorded as very thin/fat. The absence of limb conditions (95%), ocular (98%) and nasal (93%) discharges were evident in most horses, and 81% of horses responded positively to the voluntary animal approach test. The most commonly observed welfare issues were hoof neglect (27%), with hoof cracks/breakages (19%) being the most prevalent. QBA indicated that positive emotional states were more commonplace than negative. A relationship between QBA and other horse welfare measures was observed, e.g., improved mood was associated with better water availability. This research provides novel data in the under-researched area of the welfare of Traveller and Gypsy owned horses and counters perceptions of a poor welfare state in this group of horses.

2.
Animals (Basel) ; 11(7)2021 Jun 24.
Artículo en Inglés | MEDLINE | ID: mdl-34202730

RESUMEN

While veterinarians are instrumental to the welfare of calves (Bos taurus), limited knowledge exists concerning veterinary perceptions towards perioperative pain management in calves. As a part of a larger, nationwide study investigating the perceptions of veterinarians towards calf welfare, the current work sought to quantify veterinary perceptions towards perioperative pain management, including barriers to its use, and investigate demographic influences affecting those perceptions. An electronic mixed-methods survey was completed by 104 veterinarians registered with the Veterinary Council of New Zealand. The current work revealed that most veterinarians considered a multimodal approach as the most effective method for ameliorating perioperative pain in calves, rejected the practice of differential treatment based on developmental age, and perceived that postprocedural pain persists beyond 24 h for the majority of procedures included in the survey. Despite this, veterinarians identified certain barriers that may inhibit the provision of pain mitigation on-farm, including costs, inadequate recognition of pain, and ingrained farming practices. Certain demographic effects were found to influence perceptions towards perioperative pain management, including gender, the number of years since graduation, and species emphasis. Nevertheless, the current work demonstrated considerable support among veterinarians to improve pain management protocols during routine husbandry procedures. The asymmetries that exist between the current minimum provisions of perioperative pain management and veterinary perspectives suggest that substantive improvements are necessary in order to reconcile New Zealand's existing regulatory regime with developments in scientific knowledge.

3.
Animals (Basel) ; 11(2)2021 Feb 06.
Artículo en Inglés | MEDLINE | ID: mdl-33562050

RESUMEN

Despite recent legislative amendments to address areas of highest risk to the welfare of calves (Bos taurus) in New Zealand, there are prevailing concerns that animal welfare science knowledge has not been adopted in practice. As a part of a larger, nationwide study investigating the perceptions of veterinarians towards calf welfare, the aim of the current work was to investigate the perceptions of veterinarians towards the level of welfare protection afforded to young "bobby" calves in New Zealand. This study also explored concerns for welfare compromise and identified barriers to welfare-related change for calves more generally. An electronic mixed-methods survey was completed by 104 veterinarians registered with the Veterinary Council of New Zealand. The findings revealed that veterinarians strongly disagreed with the specifications of certain calf welfare regulations. Veterinarians also identified areas at highest risk of calf welfare compromise across the production chain and barriers to welfare-related change. These findings demonstrate considerable support among veterinarians for improving the level of welfare protection afforded to calves. Given the discrepancies that exist between the current regulatory regime and veterinary perspectives, the knowledge gained from this study can be used in support of regulatory reform to strengthen calf welfare in practice and policy in New Zealand.

4.
J Vet Med Educ ; 48(3): 351-360, 2021 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-32516075

RESUMEN

Working as an equine veterinarian carries a high risk of occupational injury, with the behavior of the horse frequently reported as a cause for these injuries. Risk of injury is one reason cited by undergraduate veterinary students that would prevent them from entering large animal practice, and newly graduated veterinarians have been shown to be at increased risk of sustaining an occupational injury compared with more experienced colleagues. A cohort of pre-final-year undergraduate veterinary students were given a 45-minute lecture on learning theory and its application in equine practice, completing a questionnaire before (pre) and after (immediately [post] and several weeks [delayed post]) to investigate whether receiving a single lecture alters undergraduate veterinary students' perception of dealing with difficult horses in equine practice. The undergraduate veterinary students' attitudes to the behavior scenarios altered from the pre-questionnaire to the post- and delayed post-questionnaires. They were less likely to choose more traditional methods of restraining or controlling the horse (such as a twitch) and more likely to choose an option based on learning theory after the lecture. They also reported that if they had to deal with one of these scenarios in practice following the lecture, they would feel more confident, more likely to succeed in completing the intervention, and less likely to be injured. This study suggests that an educational intervention can help change the attitudes and confidence of undergraduate students when working with difficult horses.


Asunto(s)
Educación en Veterinaria , Animales , Actitud , Curriculum , Caballos , Humanos , Estudiantes , Encuestas y Cuestionarios
5.
Vet Rec ; 187(12): 490, 2020 12 19.
Artículo en Inglés | MEDLINE | ID: mdl-32631849

RESUMEN

BACKGROUND: The welfare of all animals under human management is an area of consistent public concern, but strategies to improve welfare may vary across species. In this study, expert consensus, using a modified Delphi approach, was used to prioritise welfare issues of farmed and companion animals in the UK. METHODS: The study involved 117 experts, divided between eight species groups. Experts were recruited from a broad range of disciplines. Two rounds of online surveys were conducted using the online survey tool, and the final round was an in-person workshop with a subsection of experts (n=21). The experts agreed that welfare issues should be ranked considering three categories: (1) severity, (2) duration and (3) perceived prevalence. RESULTS: A comprehensive list of welfare issues was generated for each species by discussion boards (cats, rabbits and horses) or by literature review (dogs, pigs, poultry, cattle and small ruminants). In the first online survey, the experts scored each welfare issue using the three categories (severity, duration and prevalence) on a 6-point Likert scale, where 1=never/none and 6=always/high. Lists of welfare issues were reduced to 25 per cent-59 per cent of the total number, by determining mean ranks from expert ratings. In round 2, experts were asked whether they agreed or disagreed with the rankings. In the final stage, during the workshop, the top-ranking welfare issues for animals were determined for individual animals (considering the greatest severity and duration, in the expert's opinion) and for perceived prevalence. CONCLUSIONS: Overall, prioritised welfare issues included lack of knowledge of welfare needs, social behaviour issues, problem behaviours, inappropriate diet and environment, lack of veterinary care, consequences from breeding decisions, poor pain management, delayed euthanasia and chronic ill health. The Delphi process resulted in consensus on the most significant welfare challenges of animals in the UK and can help to guide future research and education priority decisions.


Asunto(s)
Bienestar del Animal , Animales Domésticos , Adulto , Animales , Técnica Delphi , Femenino , Humanos , Masculino , Persona de Mediana Edad , Reino Unido
6.
Animals (Basel) ; 10(4)2020 Apr 09.
Artículo en Inglés | MEDLINE | ID: mdl-32283607

RESUMEN

Equine welfare issues are receiving increasing attention in the UK, but welfare problems can arise from a wide range of causes. In order to identify the most important welfare concerns for horses, we used a Delphi method with 19 equine welfare experts. An initial list of 84 equine welfare issues was generated using an online discussion board and NVivo thematic analysis. Subsequently, experts ranked these welfare issues for perceived prevalence, severity and duration of suffering associated with each issue on a 6-point Likert scale. All issues with a mean score of 3 or above (n = 37) were included in subsequent rounds. Finally, a subset of experts attended a two-day workshop to determine the final priority list of welfare issues. The welfare issues perceived to be most prevalent were lack of biosecurity, delayed euthanasia, lack of owner knowledge of equine welfare needs, fear and stress from use, and obesity. The issues considered to cause greatest suffering for individual horses were delayed euthanasia, lack of recognition by owners of pain behaviour, large worm burdens, obesity and being fed unsuitable diets for equine feeding behaviour. These outcomes can help to focus research and education interventions on the most pressing welfare issues for horses.

7.
Res Vet Sci ; 128: 35-42, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31707098
8.
Vet Rec Open ; 6(1): e000365, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31798909

RESUMEN

BACKGROUND: Cats are the most popular pets in the UK, yet relatively little research has been conducted into the welfare of cats living in a home environment. The purpose of this study was to determine and prioritise welfare issues for cats using a Delphi method. METHODS: Cat welfare experts (n=14) were asked to identify and rank welfare issues for cats in the UK. An initial list of 118 welfare issues was generated by an anonymous online discussion board of experts and thematic analysis using NVivo. Subsequently experts ranked the list of welfare issues according to severity, duration and prevalence using a 6-point Likert scale. All issues with a median score of 3 or above (n=43) were included in the second survey to determine agreement on the rankings of issues. Finally, a subsection of experts attended a two-day workshop to discuss the welfare rankings and determine the final prioritised list of welfare issues. RESULTS: The issues considered to be the most severe and/or likely to cause prolonged cat suffering included social behaviour issues, diseases of old age, obesity, owners not seeking veterinary care and poor pain management. The welfare issues perceived to be most prevalent included neglect/hoarding, delayed euthanasia, inherited conformational defects/diseases, social or environmental restriction, and poor pain management. CONCLUSIONS: The outcomes suggested that, although issues such as cat behaviour required further research, owner education was an important factor in improving cat welfare.

9.
Animals (Basel) ; 9(4)2019 Apr 12.
Artículo en Inglés | MEDLINE | ID: mdl-31013846

RESUMEN

Traveller horses are often perceived to be exposed to poor welfare due to Travellers' traditional way of horsemanship. However, few studies have investigated Traveller horse welfare. Hence, the present study aims to explore Traveller horse owners' attitudes to horse care and welfare. Semi-structured interviews and discussion groups examined 14 Irish Traveller horse owners' attitudes and approach to horse ownership. Additionally, a body condition scoring (BCS) instrument was assessed for its accuracy and ease of use when applied by Traveller horse owners. Additionally, the BCS system was used to assess 18 horses. Results show that Travellers have a good understanding of horses' natural behaviours and environment, which is reflected in their management practices. However, barriers to improved welfare are land availability, since landowners are often reluctant to lease to Travellers, and the impoundment of horses as a consequence of fly grazing, under the Control of Horses Act 1996 (Ireland). Furthermore, Travellers regarded the BCS as a useful tool, but would require training to apply the scoring successfully. The results suggest that attitudes and management practices are favourable, but Travellers have limited means to overcome barriers. Therefore, it is necessary to increase capacity building and assist with the acquisition of land.

10.
Vet Rec Open ; 6(1): e000363, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31903189

RESUMEN

BACKGROUND: Rabbits are the third most popular pet in the UK, but little research into their welfare needs has been conducted. METHODS: A modified Delphi method was used to generate expert consensus on the most important welfare issues for rabbits in the UK. The study involved 11 experts, recruited from a range of disciplines. The experts generated an initial broad list of welfare issues via an online discussion board. Two rounds of online surveys were conducted to prioritise these issues. The final round was a workshop with a subsection of experts. The experts decided that welfare issues should be ranked considering: (1) severity, (2) duration, and (3) prevalence. RESULTS: Experts considered that rabbits were often kept in inadequate housing, were not handled or socialised properly, were fed inappropriate diets and owners failed to vaccinate their rabbits against preventable diseases. Rabbits were thought to experience a reduced life expectancy. Lack of owner knowledge of rabbit husbandry and behaviour and, in some cases, also lack of veterinary knowledge, contributed to poor rabbit welfare. CONCLUSIONS: The Delphi process resulted in consensus on the most significant welfare challenges faced by rabbits and can help guide future research and education priority decisions.

11.
Front Vet Sci ; 6: 495, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31998770

RESUMEN

Prioritization of animal welfare issues can help identify which areas most require research funding and raise awareness of best practices. A modified Delphi method was used to obtain expert opinion on the highest priority welfare issues for UK farmed livestock. Fifty-eight UK-based experts were recruited onto the study, with a minimum of 3 years experience of working with either cattle, pigs, poultry, or small ruminants (12-16 experts per group). Experts were chosen to represent a broad range of opinions. Two rounds of surveys were conducted online using Online Survey, and the final round was an in-person workshop with 21 experts. In the first survey, experts were provided with a comprehensive list of species-specific welfare issues derived from the literature. Participants were asked to score each welfare issue, for (i) severity, (ii) duration, and (iii) prevalence on a 6-point Likert scale. The results of the first survey were reviewed and the welfare issues which scored a neutral-to-high response (scores 3-6) were carried forward. In round 2, participants were asked whether they agreed or disagreed with the rankings that were made from the results of round 1. The final stage of the process was a workshop, which consisted of a combination of group exercises and discussions, to reach the final consensus. Welfare priority lists were divided into two categories: severity/duration, and prevalence, to identify the priority welfare issues affecting individual animals and the population, respectively. Across all farmed species common concerns were inadequate or inappropriate nutrition, inability of stockpeople to recognize or treat welfare issues (such as pain or behavioral problems), lameness, chronic or endemic health issues, euthanasia and mortality and morbidity of neonates. Specific concerns related to behavioral restriction and damaging or abnormal behavior in pigs, poultry and dairy animals, inadequate housing for pigs and poultry, consequences of breeding decisions in pigs and poultry, and lack of access to veterinary care in sheep and beef. This Delphi process resulted in consensus on the most significant welfare challenges faced by UK livestock species and can help to guide future research and education priority decisions.

12.
Animals (Basel) ; 8(8)2018 Aug 14.
Artículo en Inglés | MEDLINE | ID: mdl-30110949

RESUMEN

Oxytocin has been well researched in association with psychological variables and is widely accepted as a key modulator of human social behaviour. Previous work indicates involvement of oxytocin receptor gene (OXTR) single nucleotide polymorphisms (SNPs) in human-human empathy, however little is known about associations of OXTR SNPs with empathy and affective reactions of humans towards animals. Five OXTR SNPs previously found to associate with human social behaviour were genotyped in 161 students. Empathy towards animals and implicit associations were evaluated. A General Linear Model was used to investigate the OXTR alleles and allelic combinations along with socio-demographic variables and their influence on empathy towards animals. Empathy towards animals showed a significant association with OXTR SNP rs2254298; homozygous G individuals reported higher levels of empathy towards animals than heterozygous (GA). Our preliminary findings show, for the first time, that between allelic variation in OXTR and animal directed empathy in humans maybe associated, suggesting that OXTRs social behaviour role crosses species boundaries, warranting independent replication.

13.
Animals (Basel) ; 7(9)2017 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-28867794

RESUMEN

Categorisations are a means of investigating cognitive maps. The present study, for the first time, investigates adolescents' spontaneous categorisation of 34 animal species. Furthermore, explicit evaluations of 16 selected animals in terms of their perceived utility and likeability were analysed. 105 British adolescents, 54% female, mean age 14.5 (SD = 1.6) participated in the study. Results of multidimensional scaling (MDS) techniques indicate 3-dimensional data representation regardless of gender or age. Property fittings show that affect and perceived utility of animals explain two of the MDS dimensions, and hence partly explain adolescents' categorisation. Additionally, hierarchical cluster analyses show a differentiation between farm animals, birds, pet animals, and wild animals possibly explaining MDS dimension 3. The results suggest that utility perceptions predominantly underlie adolescents' categorisations and become even more dominant in older adolescents, which potentially has an influence on attitudes to animals with implications for animal welfare, conservation, and education.

14.
Attach Hum Dev ; 19(3): 278-297, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-28277094

RESUMEN

The relationship between adolescents' communication with their significant others (mother, father, and best friend) and quality of life (KIDSCREEN) was investigated in 2262 Scottish adolescent pet owners. The variable attachment to pets was also tested and assessed as a mediator of this relationship. A positive relationship between adolescents' communication with their significant other (mother, father, and best friend) and quality of life decreased when controlling for attachment to dogs. In cat owners, a positive relationship between communication with a best friend and quality of life decreased when controlling for attachment to cats. In cat and dog owners, attachment to these pets predicted higher levels of quality of life. Higher attachment to dogs and cats was explained by good best friend (IV) and attachment to pets (DV) and best friends. Mediation effects of attachment to dogs and cats might be explained in terms of the caring activities associated with these types of pets.


Asunto(s)
Comunicación , Amigos/psicología , Apego a Objetos , Relaciones Padres-Hijo , Mascotas/psicología , Calidad de Vida , Adolescente , Animales , Gatos , Perros , Femenino , Humanos , Masculino , Padres/psicología , Escocia
15.
BMJ Qual Saf ; 26(4): 271-278, 2017 04.
Artículo en Inglés | MEDLINE | ID: mdl-27013637

RESUMEN

BACKGROUND: Detailed local case review is commonly used as a strategy to improve care. However, recent reports have highlighted concerns over quality of local reviews in maternity care. The aim of this project was to describe the methods used for conducting local reviews of care of women with severe maternal morbidity, and to compare lessons identified for future care through external and local reviews. METHODS: Thirty-three anonymised clinical records from women with severe maternal morbidities were obtained, together with the report of the local review of their care. The methodology used for the local reviews was described, including specific tools used, team members involved, their disciplines, report format and whether an action plan with recommendations for audit was produced. Multidisciplinary external reviewers considered the records using a standard confidential enquiry approach. A thematic analysis of lessons learned from the two approaches was undertaken. RESULTS: A formal report of the local review was produced for 11/33 cases; 4 of these used root cause analysis. A further 12 local reviews consisted of a group discussion with output noted in a spreadsheet; 5 consisted of a timeline with good practice points and 5 had no formal review. Patients were involved in five local reviews; only one was multidisciplinary. Action plans were recorded in 14 local reviews; 3 of these included a recommendation to audit the proposed changes. External reviews identified additional messages for care and highlighted aspects of good care in every case, whereas only 55% (n=18) of local reviews identified good care (p<0.0005). CONCLUSIONS: The quality of local reviews can clearly be improved. Very few of the reviews involved patients. Local reviews should be multidisciplinary, generate an action plan, and the implementation of recommendations should be audited. Improvements in local reviews may be achieved by standardised training or development of national protocols.


Asunto(s)
Auditoría Médica/normas , Errores Médicos/prevención & control , Obstetricia , Garantía de la Calidad de Atención de Salud , Femenino , Humanos , Salud Materna
16.
Acad Med ; 89(2): 318-25, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24362379

RESUMEN

PURPOSE: Communication skills teaching in medical education has yet to acknowledge the impact of the Internet on physician-patient communication. The authors present a conceptual model showing the variables influencing how and to what extent physicians and patients discuss Internet-sourced health information as part of the consultation with the purpose of educating the patient. METHOD: A study exploring the role physicians play in patient education mediated through health information available on the Internet provided the foundation for the conceptual model. Twenty-one physicians participated in semistructured interviews between 2011 and 2013. Participants were from Australia and Switzerland, whose citizens demonstrate different degrees of Internet usage and who differ culturally and ethnically. The authors analyzed the interviews thematically and iteratively. The themes as well as their interrelationships informed the components of the conceptual model. RESULTS: The intrinsic elements of the conceptual model are the physician, the patient, and Internet based health information. The extrinsic variables of setting, time, and communication activities as well as the quality, availability, and usability of the Internet-based health information influenced the degree to which physicians engaged with, and were engaged by, their patients about Internet-based health information. CONCLUSIONS: The empirically informed model provides a means of understanding the environment, enablers, and constraints of discussing Internet-based health information, as well as the benefits for patients' understanding of their health. It also provides medical educators with a conceptual tool to engage and support physicians in their activities of communicating health information to patients.


Asunto(s)
Comunicación , Internet , Educación del Paciente como Asunto , Relaciones Médico-Paciente , Adulto , Anciano , Actitud del Personal de Salud , Australia , Información de Salud al Consumidor , Femenino , Humanos , Conducta en la Búsqueda de Información , Masculino , Persona de Mediana Edad , Investigación Cualitativa , Suiza
17.
Public Underst Sci ; 22(2): 128-36, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-23833020

RESUMEN

When people respond to questionnaires, they may construct preferences using various sources of information available, even questions within the questionnaire. An experimental approach with a representative sample of the Swiss population was applied to investigate how stable attitudes towards biotechnology are and which criteria people use spontaneously to evaluate and categorise biotechnology applications providing as little information as possible. A free card-sorting task using risk as a criterion versus not imposing a criterion was applied. Data were analysed using multidimensional scaling (MDS) and were represented in a cognitive map. Results of our experimental manipulation suggest that people's preferences for biotechnology applications are relatively stable. Different sorting instructions did not result in different cognitive maps. Results suggest, therefore, that participants' evaluations are not strongly influenced by criteria used in a questionnaire. The descriptions of the applications seem to be more crucial.

18.
Patient Educ Couns ; 90(1): 12-7, 2013 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-23089240

RESUMEN

OBJECTIVE: This study aimed to translate and validate German, Italian, and French versions of the Short-Test of Functional Health Literacy (S-TOFHLA), to be used in Switzerland and its neighboring countries. METHODS: The original English version of the S-TOFHLA was translated by applying standardized translation methods and cultural adaptations. 659 interviews were conducted with Swiss residents in their preferred language (249 German, 273 Italian, and 137 French). To assess the validity of the measures, known predictors for health literacy (age, education, and presence of a chronic condition) were tested. RESULTS: For all three language versions, results show that younger participants, participants with a higher education and participants with chronic medical conditions had significantly higher levels of health literacy. Furthermore, the three health literacy scales categorized participants into three health literacy levels with most people possessing either inadequate or adequate levels. The highest levels of health literacy were found in the Swiss-German sample (93%), followed by the Swiss-French (83%) and Swiss-Italian (67%) samples. CONCLUSION: The German, Italian, and French versions of the S-TOFHLA provide valid measures of functional health literacy. PRACTICE IMPLICATIONS: The translated versions can be used in the three different language regions of Switzerland as well as in neighboring countries following 'country specific' adjustments and validations.


Asunto(s)
Alfabetización en Salud , Lenguaje , Encuestas y Cuestionarios , Adolescente , Adulto , Factores de Edad , Anciano , Comprensión , Características Culturales , Escolaridad , Femenino , Francia , Alemania , Humanos , Entrevistas como Asunto , Italia , Masculino , Persona de Mediana Edad , Psicometría , Reproducibilidad de los Resultados , Factores Socioeconómicos , Suiza , Traducción , Adulto Joven
19.
Risk Anal ; 32(8): 1394-403, 2012 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-22150405

RESUMEN

In 2005, Swiss citizens endorsed a moratorium on gene technology, resulting in the prohibition of the commercial cultivation of genetically modified crops and the growth of genetically modified animals until 2013. However, scientific research was not affected by this moratorium, and in 2008, GMO field experiments were conducted that allowed us to examine the factors that influence their acceptance by the public. In this study, trust and confidence items were analyzed using principal component analysis. The analysis revealed the following three factors: "economy/health and environment" (value similarity based trust), "trust and honesty of industry and scientists" (value similarity based trust), and "competence" (confidence). The results of a regression analysis showed that all the three factors significantly influenced the acceptance of GM field experiments. Furthermore, risk communication scholars have suggested that fairness also plays an important role in the acceptance of environmental hazards. We, therefore, included measures for outcome fairness and procedural fairness in our model. However, the impact of fairness may be moderated by moral conviction. That is, fairness may be significant for people for whom GMO is not an important issue, but not for people for whom GMO is an important issue. The regression analysis showed that, in addition to the trust and confidence factors, moral conviction, outcome fairness, and procedural fairness were significant predictors. The results suggest that the influence of procedural fairness is even stronger for persons having high moral convictions compared with persons having low moral convictions.


Asunto(s)
Biotecnología/tendencias , Productos Agrícolas/genética , Alimentos Modificados Genéticamente , Adulto , Anciano , Actitud , Biotecnología/ética , Comunicación , Femenino , Humanos , Liderazgo , Masculino , Persona de Mediana Edad , Análisis de Componente Principal , Análisis de Regresión , Gestión de Riesgos , Justicia Social , Encuestas y Cuestionarios , Suiza , Confianza
20.
J Insect Physiol ; 55(4): 305-13, 2009 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-19135058

RESUMEN

The risk that insect-resistant transgenic plants may pose for solitary bees was assessed by determining longevity of adult Osmia bicornis (O. rufa) chronically exposed to transgenic oilseed rape expressing oryzacystatin-1 (OC-1) or to the purified insecticidal proteins recombinant rOC-1, Kunitz soybean trypsin inhibitor (SBTI), Galanthus nivalis agglutinin (GNA), or Bacillus thuringiensis toxin Cry1Ab dissolved in sugar solution (at 0.01 and 0.1%, w:v, Cry1Ab only at 0.01%). Compared to control bees, longevity was significantly reduced by SBTI and GNA at both concentrations and by rOC-1 at 0.1%, but not by Cry1Ab or rOC-1 at 0.01%. Longevity on the OC-1 oilseed rape was not significantly different from the control plants. The effects of SBTI and rOC-1 on longevity were investigated through characterization of the digestive proteinases of O. bicornis and analysis of the response in proteinase profiles to ingestion of these proteinase inhibitors. A relatively complex profile of at least four types of soluble proteolytic enzymes was identified. Serine proteinases were found to be predominant, with metallo and especially cysteine proteinases making a smaller albeit significant contribution. The compensatory response to in vivo enzyme inhibition was similar for SBTI and rOC-1 although less pronounced for rOC-1. It consisted of a non-specific overproduction of native proteinases, both sensitive and insensitive, and the induction of a novel aspartic proteinase.


Asunto(s)
Abejas/efectos de los fármacos , Brassica rapa/metabolismo , Cistatinas/metabolismo , Sistema Digestivo/enzimología , Endotoxinas/toxicidad , Longevidad/efectos de los fármacos , Plantas Modificadas Genéticamente/metabolismo , Análisis de Varianza , Animales , Toxinas de Bacillus thuringiensis , Proteínas Bacterianas/toxicidad , Abejas/enzimología , Bioensayo , Proteínas Hemolisinas/toxicidad , Lectinas de Unión a Manosa/toxicidad , Lectinas de Plantas/toxicidad , Inhibidor de la Tripsina de Soja de Kunitz/toxicidad
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