Document Detail

The postpartum buffalo: I. Endocrinological changes and uterine involution.
MedLine Citation:
PMID:  16600532     Owner:  NLM     Status:  MEDLINE    
To maintain a calving interval of 13-14 months in buffaloes, successful breeding must take place within 85-115 days after calving. Disturbances during this period due to delay of uterine involution or resumption of estrous activity are likely to prolong the calving interval and reduce the lifetime reproductive and productive efficiency. In this article literature on endocrinological changes in the peripartum period and on factors affecting uterine involution are reviewed. The available information indicated that although the availability of releasable FSH does not appear to be a limiting factor for resumption of postpartum cyclicity a substantial increase of releasable LH and replenishment of pituitary stores occurred around Day 20 in dairy and Day 30 in swamp buffaloes. There is evidence that follicular activity is resumed early (15-30 days) in the postpartum period. However, the factors which initiate release of appropriate LH pulses, follicular maturation and ovulation in the postpartum buffalo need further studies. The mean interval to complete uterine involution varied widely between 19 and 52 days. Assessment of cervical and uterine horn diameters by rectal palpation alone is not satisfactory to diagnose delayed uterine involution and possible subclinical uterine infection. Vaginal inspection can be included as a fundamental part of postpartum genital examination for diagnosis of such case. Uterine involution, however, does not seem to be a limiting factor for achievement of satisfactory fertility in the postpartum buffalo but the main determinant is resumption of estrous activity.
A B El-Wishy
Publication Detail:
Type:  Journal Article; Review     Date:  2006-04-05
Journal Detail:
Title:  Animal reproduction science     Volume:  97     ISSN:  0378-4320     ISO Abbreviation:  Anim. Reprod. Sci.     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2006-11-27     Completed Date:  2007-02-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7807205     Medline TA:  Anim Reprod Sci     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  201-15     Citation Subset:  IM    
Theriogenology Department, Faculty of Veterinary Medicine, Cairo University, P.O. Box 12211, Giza, Egypt.
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MeSH Terms
Buffaloes / physiology*
Estrous Cycle / physiology*
Follicle Stimulating Hormone / blood
Lactation / physiology
Luteinizing Hormone / blood
Ovulation / physiology
Postpartum Period* / blood,  physiology
Reproduction / physiology*
Steroids / blood
Time Factors
Uterus / physiology*
Reg. No./Substance:
0/Steroids; 9002-67-9/Luteinizing Hormone; 9002-68-0/Follicle Stimulating Hormone

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