Variation in Perinatal Mortality of Lambs with Age and Parity of Ewes
نویسنده
چکیده
This paper presents data on the incidence and cause of lamb deaths from 3, 4, 6 and 7 year old ewe groups on one property in south west Victoria. Postmortem examinations were performed on 390 lambs. The perinatal mortality rate was highest among the lambs of young and aged ewes, being associated with a higher incidence of lambs dying from dystocia and starvation respectively. This variation in perinatal mortality is discussed in relation to the dead weights of the lambs.
منابع مشابه
Phenotypic and Genetic Factors Affecting on Reproductive Lifetime of Lori-Bakhtiari Ewes
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متن کاملبرآورد عملکرد و بررسی تاثیر برخی از عوامل محیطی موثر بر صفات تولید مثلی در گوسفندان نژاد بختیاری
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متن کاملبرآورد عملکرد و بررسی تاثیر برخی از عوامل محیطی موثر بر صفات تولید مثلی در گوسفندان نژاد بختیاری
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