نتایج جستجو برای: sheep production system
تعداد نتایج: 2769216 فیلتر نتایج به سال:
Due to economical and scientific limitations, sheep embryo reproductive technologies are less commercially applied than in other animal species. However, it is very clear that, in the near future, those techniques are expected to have a central role in animal production as a consequence of genetic and reproductive demands. One drawback is that results obtained after sheep embryo cryopreservatio...
ALLELES at eight autosomal loci are known to affect blood groups in sheep, as recently reviewed by RASMUSEN ( 1962). As in studies of blood groups in cattle, chickens, rabbits and other domestic species, the question has arisen whether balance mechanisms may be involved in maintaining heterozygosity at any or all of these blood-group loci. To that end we have examined the blood groups of severa...
Quantitative measurements of blood flow (BF) to skin and several other tissues were made using radioactive microspheres in conscious sheep. The sheep were from established flocks that had been selectively bred for greater (Fleece plus) or lesser (Fleece minus) wool production. The BF rate per unit area of wool-bearing skin was significantly greater in the Fleece plus (n = 9) than in the Fleece ...
Background: Verminosis is the main limiting factor in sheep production. Its control has become more and more difficult because of resistance of gastrointestinal helminths to some active ingredients, which has led to search of alternative ways to verminosis control. Based on that, the goal of study was to evaluate the effect of homeopathy for verminosis control in sheep. Materials and Methods: T...
A study was conducted in Northern Ethiopia to assess the sheep production system and factors affecting live sheep supply for quality meat. The survey was done in selected districts known for their high density of sheep population. The flock structure seems to be affected by the demand, requirement of breeding female, feed availability and the occurrence of disease and natural calamities. Farmer...
The aims of this study were to estimate the on-fam economic cost of ovine Johne's disease (OJD) based on collected incidence and mortality data, and the benefit-cost of OJD vaccination in typical OJD affected flocks in New Zealand after having vaccinated for a number of years. Owners of 20 sheep breeding and finishing farms known to be clinically affected by ovine Johne's disease in New Zealand...
Small ruminant production is one of the main sources meat in Jumla district and contributes food security nation. A study was carried out at Guthichaur surrounding areas to observe rearing system management practices small ruminant. Twenty farmers from Guthichaur, with a flock size 100 350 animals were interviewed about system, practices, health problems. Sheep major livestock commodity most ra...
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