Reproductive efficiency of Egyptian buffaloes in relation to oestrous detection systems

A total of 57 buffalo cows were divided into two groups and subjected to different intensities of oestrous detection. In the first group (G1), oestrus was checked at 6-h intervals, four times daily starting at 0600 h as compared to twice daily in the second group (G2) at 0800 h and 1500 h. The year...

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Bibliographic Details
Published in:Animal reproduction science 1998-05, Vol.51 (3), p.225-231
Main Authors: Barkawi, A.H, Khattab, R.M, El-Wardani, M.A
Format: Article
Language:English
Subjects:
Animal Husbandry
Animals
Breeding
BUFALO DE AGUA
Buffalo
Buffaloes - physiology
BUFFLE D'EAU
DETECCION DEL ESTRO
DETECTION DE L'OESTRUS
Egypt
Estrus Detection - methods
Female
Fertilization
Lactation
Male
Oestrous detection
OESTRUS DETECTION
Ovulation - physiology
PERFORMANCE DE REPRODUCTION
Pregnancy
Progesterone - blood
Radioimmunoassay - veterinary
REPRODUCTIVE PERFORMANCE
REPRODUCTIVIDAD
Seasons
WATER BUFFALOES
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Summary:A total of 57 buffalo cows were divided into two groups and subjected to different intensities of oestrous detection. In the first group (G1), oestrus was checked at 6-h intervals, four times daily starting at 0600 h as compared to twice daily in the second group (G2) at 0800 h and 1500 h. The year was also divided into two seasons: cool from November to April; and hot from May to October. Ovulatory activity was monitored by measuring progesterone concentrations in blood serum. Samples were obtained every 3 or 4 days post-partum until conception was confirmed. More frequent detection practices produced shorter intervals for all of the reproductive parameters. Calving interval was less for cows in G1 in the cool season (363.5±16.0 vs. 400.3±14.3 days) than in the hot season (387.0±15.3 vs. 441.5±14.3 days). Oestrous detection efficiency was higher ( P
ISSN:0378-4320
1873-2232
DOI:10.1016/S0378-4320(98)00062-1