نتایج جستجو برای: sheep production system
تعداد نتایج: 2769216 فیلتر نتایج به سال:
A sensitive immunoassay procedure for the detection of the thrombopoietic-stimulating factor (TSF) has been developed. This procedure Is similar to the hemagglutination-inhibition (HAl) technique that is available for erythropoietin. For the production of TSF, sheep were made thrombocytopenic by the Injection of antiplatelet serum. TSF from sheep sera was partially purified by column chromatogr...
A sensitive immunoassay procedure for the detection of the thrombopoietic-stimulating factor (TSF) has been developed. This procedure Is similar to the hemagglutination-inhibition (HAl) technique that is available for erythropoietin. For the production of TSF, sheep were made thrombocytopenic by the Injection of antiplatelet serum. TSF from sheep sera was partially purified by column chromatogr...
Foot rot is a highly contagious and economically important disease of the feet of ruminants especially sheep and goats and is characterized by the separation of keratinous hoof from the underlying epidermal tissue resulting in severe lameness, loss of body condition and reduced wool production. Although foot rot infection has been reported in cattle, horses, pigs, deer and mouflon, the infectio...
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The effect of various animal wastes on growth and reproduction of an epigeic earthworm Eisenia foetida was studied under identical laboratory conditions. For each waste, viz., cow, buffalo, horse, donkey, sheep, goat and camel, five hatchlings per 100 g of waste were inoculated and monitored for biomass gain, mortality, sexual maturity, cocoons production periodically for 15 weeks. No mortality...
The domestication of livestock represented a crucial step in human history. By using endogenous retroviruses as genetic markers, we found that sheep differentiated on the basis of their "retrotype" and morphological traits dispersed across Eurasia and Africa via separate migratory episodes. Relicts of the first migrations include the Mouflon, as well as breeds previously recognized as "primitiv...
Ovarian follicles are a major site of oestrogen synthesis in sheep, but almost nothing is known about the relative contribution made by follicles of different sizes to the output of oestrogen at various stages of the reproductive cycle. To determine this, ovaries were dissected from sheep, all follicles over 2 mm in diameter were explanted separately as organ cultures and the daily production o...
J. Anim. Sci. Vol. 88, E-Suppl. 2/J. Dairy Sci. Vol. 93, E-Suppl. 1/Poult. Sci. Vol. 89, E-Suppl. 1 751 Live and carcass leg characteristics in terminally sired lambs. M. R. Mousel*1, T. D. Leeds2, D. R. Notter3, H. N. Zerby4, S. J. Moeller4, and G. S. Lewis1, 1USDA, ARS, U.S. Sheep Experiment Station, Dubois, ID, 2USDA, ARS, National Center for Cool and Cold Water Aquaculture, Leetown, WV, 3Vi...
Stephen T. Morris Institute Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11222, Palmerston North 4410, New Zealand ABSTRACT: The New Zealand climate favours pasture growth, and it is the key to sheep and beef cattle production as pasture provides over 95% of the diet of sheep and beef cattle. Production systems range from intensive sheep and beef cattle farms on th...
Abstract Background and Objectives One of the side effects of immunoglobulin administration is the activation of the complement system related to the high concentration of aggregates/large polymers in the production process. Measuring anticomplementary activity (ACA) is important in pharmaceutical quality control and is a criterion of spontaneous activation of complement system in immunoglobuli...
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