Document Detail

Fertility of the male alpaca: effect of daily consecutive breeding.
MedLine Citation:
PMID:  9231269     Owner:  NLM     Status:  MEDLINE    
The fertility of the male alpaca under different frequencies of daily consecutive matings was evaluated. Fifteen adult male Huacaya alpacas were divided randomly into three groups of five each to breed lactating female alpacas. The schedule of daily matings was two, four and six consecutive breeding per group and for nine consecutive days. Ovulation was determined by progesterone at seven days after breeding. Pregnancy was determined by ultrasonography at 15 and 30 days after breeding. Two hundred and eighty females were bred with some males not fulfilling their schedule of breeding. There were differences (P < 0.05) in the fertility rate of males breeding two and four times daily (76%) in contrast to 59% for males breeding six times. There were also differences (P < 0.05) in the fertility of individual males. Length of copulation was affected (P < 0.05) by schedule of matings, day of breeding and male. Ovulation was independent of length of copulation. Overall, it seems the fertility of the male alpaca is affected significantly when consecutive matings are over four times a day and for nine consecutive days.
P W Bravo; P Solis; C Ordoñez; V Alarcon
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Animal reproduction science     Volume:  46     ISSN:  0378-4320     ISO Abbreviation:  Anim. Reprod. Sci.     Publication Date:  1997 Apr 
Date Detail:
Created Date:  1997-09-09     Completed Date:  1997-09-09     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7807205     Medline TA:  Anim Reprod Sci     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  305-12     Citation Subset:  IM    
Centro Experimental La Raya, Universidad Nacional San Antonio Abad, Cusco Peru.
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MeSH Terms
Camelids, New World / physiology*
Copulation / physiology*
Embryo, Mammalian / ultrasonography
Fertility / physiology*
Ovulation / physiology
Pregnancy Rate*
Progesterone / blood
Random Allocation
Time Factors
Ultrasonography, Prenatal / veterinary
Reg. No./Substance:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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