A genetic improvement programme is a sustainable, cumulative and permanent approach to achieving year-on-year performance gains. Its success predicated not only on an efficient effective breeding but also vision of the traits importance in future. single, industry-owned, centralised database for cattle sheep has been foundation programmes Ireland. While DNA information heralded as breakthrough ...

SUMMARY The effect of L-asparaginase on imm'unosuppression in mice was studied with procedures measuring the ability to produce circulating antibodies against sheep erythrocytes and allogeneic tumor cells and the'incidence of tumor take in the allogeneic mice. The production of anti-sheep erythocyte antibodies on primary immune response in C57BL/Na X A/Jax F1 mice was markedly suppressed at a d...

agricultural residues have high potential to produce biogas, but they contain lignocellulosicmaterials which are not easily degradable, so the pretreatment is required. chemical pretreatmentincreases the rate of degradation and efficiency of biogas production. this study has beeninvestigated the effect of 4% -urea, 5%-ammonia and 8%-sodium hydroxide on degradation of ricestraw and production of...

Nineveh is one of the main governorates Iraq for sheep ranching. However, in recent years, E.coli has caused many problems and diseases sheep. Therefore, current study was conducted to isolate from their surrounding environment two types breeding systems (open closed) effect system on rates its isolation. During period 1 Feb 30 Apr 2022, 380 samples milk, skin swabs, oral swabs lambs, water, dr...

Twenty-eight Dorper wethers, allocated according to age into 4 groups of 7 animals each, and 1 group of 7 Merino wethers, were compared for susceptibility to Schistosoma mattheei infestation. The group mean ages of the Dorper sheep varied from 5-61 months and their live mass from 25-66 kg, while the Merinos were 8 months old and had a mean mass of 19 kg. Despite the marked differences in the ag...

Tsigai and Improved Valachian are the most spread sheep breeds in Slovakia. Both are multi-purpose breeds (Krupová et al., 2009), well adapted to local climate and environment. Tsigai is one of the oldest native breeds in areas from 500 to 800 m above sea level, mostly in the semi-extensive production system (Krupová et al., 2009), while improved Valachian is mostly kept in mountains and foothi...

In mature male sheep, the level of nutrition acutely influences the secretion of reproductive hormones. The mechanism involved is not fully understood but findings in humans and laboratory rodents would suggest a major role for leptin that is secreted from adipose tissue and then travels via the circulation to the central nervous system. Before we can begin to test this hypothesis, we need to b...

BACKGROUND Gastrointestinal nematode (GIN) infection is one of the main constraints to sheep production both in temperate and tropical countries. Economic losses caused by GIN are related to decreased production, treatment costs and even animal death. The present paper was aimed at assessing the anthelmintic efficacy (based on faecal egg count reduction) of moxidectin and ivermectin both admini...

Introduction There are different ways to assemble data in order to get a picture of animal health: registrations made by the farmer, veterinary treatments, lamb growth, milk production, meat inspections, carcass weights and conformations. Most data though don't distinguish between organic and conventional production. Up to this time, the best way to get a picture of animal health in organic pro...