This short history of the Dorper sheep traces its background and the steps taken to develop that breed in South Africa. The most important traits considered for the developing of the Dorper are listed and the breeding system outlined. The development of the White Dorper is also detailed and the breed improvement programs are indicated.

BACKGROUND The variability in the clinical or pathological presentation of transmissible spongiform encephalopathies (TSEs) in sheep, such as scrapie and bovine spongiform encephalopathy (BSE), has been attributed to prion protein genotype, strain, breed, clinical duration, dose, route and type of inoculum and the age at infection. The study aimed to describe the clinical signs in sheep infecte...

involved in choosing appropriate criteria and procedures for problem~ ses of breed and mating system evaluation experiments in sheep are. nom lC ana iiterature is rev1ewed of expenments 1n Wh1Ch blOlog1cal or econom1C scn bed . has been investigated. The .range in relative economic merit from the lCl ency the best group in an expenment tYP1cally 1S from 100 to 120, w1th rest to 140 not uncommon...

Serum biochemical traits constitute important panels in the clinical diagnosis, prognosis and treatment of livestock diseases via the investigations of myriads of parameters influencing these biochemical references. Sixty clinically healthy animals of three extant breeds of Nigerian native sheep (20 Balami: 20 Yankassa and 20 Uda) were sampled to examine the roles of breed, age and sexual dimor...

BACKGROUND The objective of this proteomics study was to identify proteins that changed expression as a result of copper challenge in the uniquely copper sensitive North Ronaldsay sheep and further, to compare those changes in expression with the more copper tolerant Cambridge breed. Such data gives us a proteome-centered perspective of the pathogenesis of copper-induced oxidative stress in thi...

The article presents the results of a biochemical and morphological analysis pure blood cross-bred sheep Edilbaevsky breed, born in different seasons year. parameters animals studied groups by us were within physiological norm, but there some differences between groups. It was found that redox processes body cross-breed group more intense than peers same group, which turn affected higher indica...

Relevance. The article provides a justification for the use of sheep selection taking into account intra-breed type Prekos ewes in purebred breeding and crossing with producers semi-fine wool breeds Romney-Marsh Kuibyshevskaya to improve biological usefulness meat offspring. Methods : scientific economic experiment different options, productive Precos breed. Results. presents results study on i...

Eperythrozoonosis is a small ruminant disease caused by the bacterium Mycoplasma ovis (formerly known as Eperythrozoon ovis). Whilst acute infection in sheep may result in an anaemia and ill thrift syndrome, most animals do not develop clinical signs. Molecular methods were used to compare and evaluate the prevalence of infection with M. ovis in sheep and goats in Tunisia. A total of 739 whole ...