نتایج جستجو برای: aborted calf
تعداد نتایج: 17574 فیلتر نتایج به سال:
Q fever is a zoonotic disease that occurs worldwide and is caused by the obligate intracellular bacterium Coxiella burnetii. The aim of this study was to investigate the presence of C. burnetii infection in aborted sheep in eastern Turkey using PCR. A total of 200 fetuses were collected from aborted sheep belonging to 200 herds in different locations in the eastern part of Turkey. Foetal organ ...
the main objective of this study was to evaluate the effect of dietary inclusion of wheat or corn as the main source of starch in prepartum diets on colostrum composition, colostrum igg1 and igg2 concentrations, serum igg1 and igg2 concentrations of calves and efficiency of igg1, igg2 and total ig absorption. for this purpose, thirty primiparous and twenty multiparous holstein cows were used in...
We examined the behavioural ecology of mothers and calves during the first year of life to identify variables predicting calf mortality among bottlenose dolphins. Specifically, we investigated whether the primary cause of calf mortality was poor calf condition or shark predation. Seventy-five per cent of calves that died (NZ 12) showed visible signs of poor health compared with 4.7% of the surv...
Context Baleen whale calves rapidly increase in size and improve locomotion abilities, while on their low-latitude breeding ground, allowing them to undertake a successful migration high-latitude feeding grounds. Aims We investigated energy expenditure resting behaviour of humpback (Megaptera novaeangliae) mother–calf pairs regard changes calf length an undisturbed breeding/resting ground off E...
Antibodies to purified calf thymus Fl, and to chromatographically purified subfractions of calf thymus Fl histones were induced by immunization of rabbits with histone-RNA complexes. Complement fixation studies with these antibodies demonstrated structural differences between the subfractions in one organ and between those of different organs and species. The anti-F1 sera showed varying reactiv...
Introduction & Objective: Spontaneous pregnancy loss is the most common complication of pregnancy. However, after a thorough evaluation the potential cause remains unexplained in about half of the cases. Autoimmune disorders appear to play a prominent role among multiple factors implicated in pathogenesis of adverse pregnancy outcome, including thyroid antibodies .The purpose of this study is...
Association between Coxiella burnetii seropositivity and abortion in dairy cattle of Northern Italy.
Coxiella burnetii, the agent of Q fever in humans, has been associated with abortion in cattle. In this study 650 sera from cattle with abortion and 600 randomly-selected control sera were examined for antibodies to C. burnetii by ELISA. Two hundred and ninety-two (44.9%) out of 650 animals which experienced abortion were seropositive versus 132 (22%) out of 600 of the control group. A statisti...
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