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Reproductive responses associated with ram introduction in mature tropical Menz ewes after a period of isolation

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Title Reproductive responses associated with ram introduction in mature tropical Menz ewes after a period of isolation
 
Creator Mukasa-Mugerwa, E.
Sovani, S.
Toe, F.
Lahlou-Kassi, A.
 
Subject ETHIOPIA
RAMS
EWES
REPRODUCTIVE PERFORMANCE
ISOLATION TECHNIQUES
ANIMAL NUTRITION
MENZ SHEEP
 
Description This study was undertaken using 48 mature Menz ewes (3-6 years of age) and averaging 31.5 (standard deviation (SD)=4.9) kg body weight, to evaluate oestrus synchronization, conception and lambing rates after ram introduction following a period of isolation (n=24) or constant exposure to vasectomized rams (n=24) on a low or high level of nutrition. The overall level of oestrus synchrony was low (27 percent), but was higher for animals previously isolated (38 vs. 17 percent). The mean interval from ram introduction to oestrus was 12.2 (SD=7.3) days, but this was significantly shorter for isolated ewes (9.4+1.2 vs. 14.8+1.7 days, P
 
Date 2013-05-06T07:00:19Z
2013-05-06T07:00:19Z
1994
 
Type Journal Article
 
Identifier Animal Reproduction Science;36(3-4): 243-251
0378-4320
http://hdl.handle.net/10568/28291
 
Language en
 
Source Animal Reproduction Science