POST-PARTUM ANESTRUS AND SEASONELITY IN PRIMIPAROUS EGYPTIAN BUFFALOES | ||||
| Journal of Animal and Poultry Production | ||||
| Article 6, Volume 30, Issue 12, December 2005, Page 7347-7354 PDF (2.23 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2005.238447 | ||||
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| Authors | ||||
| H. M. Pharghaly,1; A. F. Hussein2; E. E. Tharwat2 | ||||
| 1Radiobiology Dept. Atomic Energy Authority, Egypt. | ||||
| 2Animal Production Dept. Fac. of Agric. Ain Shams Univ., Cairo, Egypt. | ||||
| Abstract | ||||
| Twelve primiparous Egyptian buffalo cows were used in this study during the period from July 2001 to April 2003 to investigate the post partum anestrus. The animals had 3.75 years of age with an average weight 435.41± 5.32 kg. The average length of post-partum anestrus was 62±3.33 days. Buffaloes calved during cold season (Nov. to April) had longer (7S.2S±7.70 days) post-partum anestrus than those calved during hot season (May to Oct.) 46.86±4.25 days. Overall mean of progesterone concentration during the entire length of post-partum anestrus was 0.16±0.29 ng/mL 53.33% of animals exhibited either seasonal or long-term anestrus or both through the study. Progesterone levels during anestrus (post-partum, seasonal and long-term) were basal 0.6 to 0.42 ng/ml. The overall lengths of seasonal and long- term anestrus were 122±5.75 and 48.13±4.42 days, respectively. Progesterone profiles showed that tow thirds of the animals (66.67%) had post-partum anestrus continued with either seasonal anestrus or long-term anestrus or both of them along period of the study. This phenomena is considered to be a serious problem because it decreased the percentage of buffaloes that hastened their ovarian activity during the first 40 days after calving. | ||||
| Keywords | ||||
| Postpartum; Anestrus; Seasonality; Egyptian buffaloes | ||||
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