نتایج جستجو برای: bakhtiari sheep population
تعداد نتایج: 732291 فیلتر نتایج به سال:
We describe health significance of protostrongylid parasites (Parelaphostrongylus odocoilei and Protostrongylus stilesi) and other respiratory pathogens in more than 50 naturally infected Dall's sheep (Ovis dalli dalli) from the Mackenzie Mountains, Northwest Territories (1998-2002) as well as in three Stone's sheep (O. d. stonei) experimentally infected with P. odocoilei (2000-2002). Histologi...
Xinjiang has large sheep breeds, but their origins, evolution, genetic diversity of systems are still unclear. In this study, the genetic diversity and phylogeny of 19 indigenous sheep breeds in Xinjiang, China and one western breed, Texel were analyzed. Single-strand conformation polymorphism (SSCP) was used to detect polymorphisms of the sheep mitochondrial DNA fragment and based on SSCP resu...
We assessed evidence of exposure to viruses and bacteria in an unmanaged and long-isolated population of Soay sheep (Ovis aries) inhabiting Hirta, in the St Kilda archipelago, 65 km west of Benbecula in the Outer Hebrides of Scotland. The sheep harbour many metazoan and protozoan parasites but their exposure to viral and bacterial pathogens is unknown. We tested for herpes viral DNA in leucocyt...
Six morphometric traits (height at withers, body length, chest girth, ear length, tail length and body weight) were analyzed to characterize from a breed point of view 1981 sheep from four ovine breeds (Bellary, Kenguri, Hassan and Mandya) of southern peninsular zone of India. Discriminant Function Analysis was used to distinguish between four breeds by morphometric traits. The population varia...
Tibetan sheep are carpet and apparel wool producing ovine breed of the Indian subcontinent. The Bhotia community of North Eastern India traditionally rears the sheep of this breed. The Tibetan sheep are adapted to the temperate climate and have been providing livelihood for majority of the people in the region. Livestock herding was the primary occupation of the people of the higher altitude re...
Despite much attention, history of sheep (Ovis aries) evolution, including its dating, demographic trajectory and geographic spread, remains controversial. To address these questions, we generated 45 complete and 875 partial mitogenomic sequences, and performed a meta-analysis of these and published ovine mitochondrial DNA sequences (n = 3,229) across Eurasia. We inferred that O. orientalis and...
background: ghezel sheep are highly prolific and one of the local sheep breeds in iran and turkey. growth differentiation factor-9 (gdf9) gene has been found to be essential for growth and differentiation of early ovarian follicles. novel mutations in gdf9 have been associated with increased ovulation rates and high litter sizes in heterozygous carriers. therefore, fecundity gene for gdf9 (fecg...
Dairy sheep may take advantages from all aspects of research conducted in the field of animal science and biology. There are, however, laboratories that specifically work in that field and have a direct objective of improvement of dairy sheep breeding. In the field of nutrition, an important body of work has been done in a collaborative EEC project involving France (INRA ; Barillet and Bocquier...
A technique using fresh feeding signs as an index of density was validated and used to survey the effects of sheep grazing on vole population densities in four upland habitats in the northern Peak District National Park, UK. In grazed areas Molinia caerulea grasslands supported most voles, Nardus stricta grasslands supported fewer and Eriophorum vaginatum and Calluna vulgaris-dominated areas su...
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