El-Regalaty,, H., Aboul-Ela., H. (2014). NON-GENETIC FACTORS AFFECTING INCIDENCE OF ABORTION, STILLBIRTH AND POST–NATAL MORTALITY OF EGYPTIAN BUFFALOES. Journal of Animal and Poultry Production, 5(6), 313-324. doi: 10.21608/jappmu.2014.70513
H A El-Regalaty,; H. B. Aboul-Ela.. "NON-GENETIC FACTORS AFFECTING INCIDENCE OF ABORTION, STILLBIRTH AND POST–NATAL MORTALITY OF EGYPTIAN BUFFALOES". Journal of Animal and Poultry Production, 5, 6, 2014, 313-324. doi: 10.21608/jappmu.2014.70513
El-Regalaty,, H., Aboul-Ela., H. (2014). 'NON-GENETIC FACTORS AFFECTING INCIDENCE OF ABORTION, STILLBIRTH AND POST–NATAL MORTALITY OF EGYPTIAN BUFFALOES', Journal of Animal and Poultry Production, 5(6), pp. 313-324. doi: 10.21608/jappmu.2014.70513
El-Regalaty,, H., Aboul-Ela., H. NON-GENETIC FACTORS AFFECTING INCIDENCE OF ABORTION, STILLBIRTH AND POST–NATAL MORTALITY OF EGYPTIAN BUFFALOES. Journal of Animal and Poultry Production, 2014; 5(6): 313-324. doi: 10.21608/jappmu.2014.70513
NON-GENETIC FACTORS AFFECTING INCIDENCE OF ABORTION, STILLBIRTH AND POST–NATAL MORTALITY OF EGYPTIAN BUFFALOES
Animal Production Research Institute, Agricultural Research Center, Ministry of Agriculture.
Abstract
Prenatal mortality is one of the most important causes of production losses in the livestock industry. This study shed lights on the prevalence of abortion and stillbirth, and postnatal mortality up to six months in five buffalo herds (6169 pregnancy cases) to determine the effect of some non-genetic factors on the incidence of the three disorders in five buffalo herds in Egypt. These factors included the effect of farm, year, season and parity on abortion as well as dam's weight at calving, and sex, weight and age (at death) of calves on stillbirth and mortality rate.. Results showed that percentage of pre- and post-natal losses was 16%,, representing 1.33% abortion, 3.65% stillbirth and 11.05% for postnatal mortality up - to six months of age. The incidence of abortion was affected (P<0.001) by season, year, dam's parity, and the farm. The same factors in addition to calf's weight exerted significant (P<0.001) effects on the rate of stillbirth but dam's weight at calving did not show any significant effect (P≥0.05). Incidence of mortality was significantly (P<0.001) affected by season, year, parity, dam's weight at calving, calf's age and weight at death, and farm. This study put more emphasis on the importance of non-genetic effects as the main contributors impacting productive and reproductive performance of buffaloes. Farm conditions, herd management and policy have pronounced effects on the incidence of abortion, stillbirths, and postnatal mortality. The results of this study could be useful to enhancing productive and reproductive performance in large or small sized buffalo herds.
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