Annual reproductive rhythm and ovulation rate in four fat-tailed sheep breeds
- 1 April 1978
- journal article
- research article
- Published by Cambridge University Press (CUP) in Animal Science
- Vol. 26 (2) , 177-184
- https://doi.org/10.1017/s0003356100039593
Abstract
Karakul, Mehraban, Naeini and Bakhtiari sheep were checked twice a day for oestrus using aproned rams and were laparotomized within 5 to 16 h of the end of every second oestrous period. Oestrus was observed for 12 monthly periods commencing on 21 April.The Mehraban breed with 1 -6 oestrous periods per month was less seasonal in its breeding activity (PPv. 1·28 oestrous periods per month). Seasonal variation in the sexual activity of the ewes was observed (PPPPPv. 0·43, P<001).This publication has 15 references indexed in Scilit:
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