خيارات البحث
النتائج 1 - 10 من 259,683
ILSTS006: A polymorphic bovine microsatellite النص الكامل
1993
Brezinsky, L. | Kemp, Stephen J. | Teale, A.J.
Dinucleotide repeat polymorphism at the bovine locus BOVFSHB
1991
Kemp, Stephen J. | Teale, A.J.
Review: Animal health and sustainable global livestock systems النص الكامل
2018
Perry, Brian D. | Robinson, Timothy P. | Grace, Delia
This paper discusses the sustainability of livestock systems, emphasising bidirectional relations with animal health. We review conventional and contrarian thinking on sustainability and argue that in the most common approaches to understanding sustainability, health aspects have been under-examined. Literature review reveals deep concerns over the sustainability of livestock systems; we recognise that interventions are required to shift to more sustainable trajectories, and explore approaches to prioritising in different systems, focusing on interventions that lead to better health. A previously proposed three-tiered categorisation of ‘hot spots’, ‘cold spots’ and ‘worried well’ animal health trajectories provides a mental model that, by taking into consideration the different animal health status, animal health risks, service response needs and key drivers in each system, can help identify and implement interventions. Combining sustainability concepts with animal health trajectories allows for a richer analysis, and we apply this to three case studies drawn from North Africa and the Middle East; Bangladesh; and the Eastern Cape of South Africa. We conclude that the quest for sustainability of livestock production systems from the perspective of human and animal health is elusive and difficult to reconcile with the massive anticipated growth in demand for livestock products, mainly in low- and middle-income countries, as well as the aspirations of poor livestock keepers for better lives. Nevertheless, improving the health of livestock can contribute to health sustainability both through reducing negative health impacts of livestock and increasing efficiency of production. However, the choice of the most appropriate options must be under-pinned by an understanding of agroecology, economy and values. We argue that a new pillar of One Health should be added to the three traditional sustainability pillars of economics, society and environment when addressing livestock systems.
اظهر المزيد [+] اقل [-]ILSTS005: A polymorphic bovine microsatellite النص الكامل
1993
Brezinsky, L. | Kemp, Stephen J. | Teale, A.J.
Performance of crossbred dairy calves fed a basal diet of meadow hay supplemented with noug (Guizotia abyssinica) cake or urea-molasses mixture with or without phosphate النص الكامل
1989
Kabaija, E. | Little, D.A.
A study conduted to examine the response to supplementary phosphours by dairy calves fed a basal diet of native grass hay supplemented with urea-molasses mixture or a local oilseed cake, noug (nigerseed). Includes data on chemical composition, bodyweight gains, intake & digestibility, and bone quality of calves.
اظهر المزيد [+] اقل [-]Geographic and breed distribution of an Msp I PCR-RFLP in the bovine growth hormone (bGH) gene النص الكامل
2000
Lagziel, A.S. | DeNise, S. | Hanotte, Olivier H. | Dhara, S. | Glazko, V. | Broadhead, A. | Davoli, R. | Russo, V. | Soller, M.
Information is presented on the frequency of the Msp I (-) allele in the third intron of the bovine growth hormone gene in a large number of cattle breeds. Consideration of the breed frequencies in relation to their geographic origin shows a low frequency for breeds originating in Northern Europe, moderate frequencies for breeds originating in Eastern Europe or the countries surrounding the Mediterranean basin, and very high frequencies for breeds originating in the Indian subcontinent. Consideration of breed frequencies in relation to breed type, shows low to moderate frequencies for the humpless breeds, high frequencies for the humped breeds. Various explanations for this distribution are discussed, among them the possibility that the Msp I (-) allele originated in the Bos indicus breeds of the Indian subcontinent, from which it diffused through the humpless Bos taurus breeds of Eastern Europe, the Mediterranean basin, eventually reaching Western, Northern Europe, Western Africa in low frequencies.
اظهر المزيد [+] اقل [-]Applicability of bovine microsatellite markers for population genetic studies on African buffalo (Syncerus caffer) النص الكامل
1999
Hooft, W.F. van | Hanotte, Olivier H. | Wenink, P.W. | Groen, A.F. | Sugimoto, Y. | Prins, H.H.T. | Teale, A.J.
Applicability of bovine microsatellite markers for population genetic studies on African buffalo (Syncerus caffer) النص الكامل
1999
Hooft, W.F. van | Hanotte, Olivier H. | Wenink, P.W. | Groen, A.F. | Sugimoto, Y. | Prins, H.H.T. | Teale, A.J.
The applicability of bovine autosomal micro-satellite markers for population genetic studies on African buffalo was investigated. A total of 168 microsatellite markers were tested for PCR amplification on a test panel of seven African buffalo. Amplification was observed for 139 markers (83 percent), and 101 markers were studies further with 91 (90 percent) being polymorphic. The mean number of alleles per marker was 5.0 (SE=0.2) and the mean heterozygosity per marker was 0.61 (SE=0.03). Considering the overall high level of polymorphism, it was concluded that most bovine microsatellite markers are applicable in African buffalo.
اظهر المزيد [+] اقل [-]Applicability of bovine microsatellite markers for population genetic studies on African buffalo (Syncerus caffer) النص الكامل
1999
Hooft, W.F van | Hanotte, O. | Wenink, P.W. | Groen, A.F. | Sugimoto, Y. | Prins, H.H.T. | Teale, A.
The applicability of bovine autosomal micro-satellite markers for population genetic studies on African buffalo was investigated. A total of 168 microsatellite markers were tested for PCR amplification on a test panel of seven African buffalo. Amplification was observed for 139 markers (83%), and 101 markers were studied further with 91 (90%) being polymorphic. The mean number of alleles per marker was 5(.)0 (SE = 0(.)2) and the mean heterozygosity per marker was 0(.)61 (SE = 0(.)03). Considering the overall high level of polymorphism, it was concluded that most bovine microsatellite markers are applicable in African buffalo.
اظهر المزيد [+] اقل [-]Five polymorphic bovine microsatellites (ILSTS010-014) النص الكامل
1993
Brezinsky, L. | Kemp, Stephen J. | Teale, A.J.
ILSTS002: A polymorphic bovine microsatellite النص الكامل
1992
Kemp, Stephen J. | Brezinsky, L. | Teale, A.J.
Functional aspects of BoT4+ alloreactive T lymphocytes transformed by Theileria parva
1988
Teale, A.J. | Baldwin, Cynthia L.
The initial studies of the products of the bovine MHC with alloraective T lymphocytes generated in vitro have been described. In those studies, the cytolytic activity and specificity of bulk populations of alloreactive T cells were investigated. One non-cytolytic and two cytolytic BoT4 + clones were studied following in vitro infection and transformation with sporozoites of T. parva. In this paper, the results of this study are also discussed. According to the results, transformation of bovine alloreactive T lymphocytes has the advantage that derived cell lines do not require repeated exposure to antigen and the addition of exogenons growth factors during culture and thus are simple to maintain in a functional state.
اظهر المزيد [+] اقل [-]