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Showing 1 to 13 of 13 for “"Cattle breeds"”.
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Genetic Characterization of Zambian Native Cattle Breeds
… of livestock in developing countries. Since cattle represent a major food animal species in Zambia, its conservation is a major goal for both the government and non-governmental organizations. To support the conservation effort, the objective of this thesis research was to assess the …
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GENOMICS OF EFFICIENCY, RESILIENCE AND BIODIVERSITY IN HOLSTEIN AND LOCAL CATTLE BREEDS
… Holstein (a cosmopolitan population) and local cattle breeds, focusing on their genetic diversity, adaptation to environmental challenges and the application of genomic tools in breeding programs. The research primarily investigates genetic diversity among autochthonous cattle breeds in the …
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Effects of selection on highly heritable traits of purebred and hybrid beef cattle
… faces the challenge of consistently producing cattle that yield meat products of desirable quality. This is a difficult goal because of the large intra- and interbreed variability among beef cattle breeds. Great variation exists between breeds for both carcass composition and meat quality …
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Postpartum ovarian activity and response to progestagen treatment in rustic beef cows (Spanish Retinta) underfed to simulate their typical ranging conditions
<p>Retinta cattle, a rustic beef breed raised in free-ranging conditions in the Southwest of Spain, are adapted to seasonal pasture scarcity but exhibit a prolonged calving interval. This study characterized the ovarian activity and response to progestagen treatment (Synchromate-B type) in …
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Proteomic profiling of Nguni cattle liver tissue using gel and Gel-Free approaches: methodology development and potential applications
… on livestock farming for their livelihoods, with cattle production being the most important livestock sector. As a consequence of natural selection in stressful conditions, Nguni cattle have been reported to be metabolically superior to other cattle breeds under unfavourable conditions. Using …
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Regiões genómicas associadas à variação da coloração da pelagem em bovinos da raça GIR
In Brazil, the Zebu breeds represent more than 80% of the cattle herd, with the Gir being one of the breeds of great importance, mainly for dairy production. The breed has twelve different coat color phenotypes (red, yellow, choker red, choker yellow, calico red, calico yellow, red calico, yellow …
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Genetic variation within the Icelandic cattle breed: assessment using microsatellites and analysis of single nucleotide polymorphisms in the Leptin and DGAT1 genes
Sufficient genetic variation within domestic breeds is a crucial factor in all breeding work. It is a prerequisite for future breeding progress and is used in research and development of breeding methods at the molecular level. The present study estimates genetic variation within the Icelandic …
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Genetic diversity and relationships among Nguni cattle populations in three Southern African countries
… is a transboundary indigenous Southern African cattle breed. The breed has distinct populations that are adapted to the different ecological zones of Southern Africa. Previous work on characterising the Nguni has been limited to within-country studies. Thus, the aim of the current study was to …
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The influence of catecholamines on energy metabolism beef colour and tenderness in three commercial beef breeds
… or to lower the metabolic rate of certain cattle breeds as an adaptive mechanism to hot climates. From the present study, animals that are historically more docile had higher urinary catecholamine concentrations per se. By quantifying the relationship between catecholamines and animal …
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Monitoring and improving reproductive performance of crossbred dairy cattle in Tigray Region, Ethiopia
… population; however, reproductive performance of cattle and their breeding management are unsatisfactory. Currently, the sole diagnostic tool in the country is rectal palpation, which is inaccurate for early pregnancy in cattle. The study assessed reproductive performance and major reproductive …