Document Detail

Milk progesterone for pregnancy diagnosis in dairy goats.
MedLine Citation:
PMID:  7174966     Owner:  NLM     Status:  MEDLINE    
Factors affecting progesterone concentration in milk of lactating dairy goats and use of this milk for pregnancy diagnosis were studied. Radioimmunoassay was used to assay progesterone in milk. Mean milk progesterone (ng/ml) +/- standard errors of 6 pregnant does for first, composite, and last milk were 9.9 +/- 2.0, 18.2 +/- 3.5, and 21.7 +/- 4.1. Correlation between milk fat and progesterone in composite milk was low (.11). Composite milk samples from 4 nonpregnant does were obtained daily throughout the estrous cycle. Milk progesterone (ng/ml) was 1 to 2 at estrus, rose to 5 to 12 within 2 to 5 days, reached a plateau at 15 to 25 in the middle of the estrous cycle, and then dropped to low concentrations again at 3 to 5 days before the next estrus. Milk progesterone also was used to diagnose pregnancy in 72 does. Forty-two does were diagnosed pregnant by high progesterone; 36 of these does later produced kids, and 5 other does aborted in various stages of pregnancy. Of 21 does diagnosed not pregnant with low progesterone, 19 does were not pregnant by either return to estrus or lack of parturition in the spring. All three incorrectly diagnosed does were problem breeders. Nine does with intermediate milk progesterone were classified questionable. Milk progesterone can be used to provide an early indication of the pregnancy status of does.
J A Pennington; W F Hoffman; L H Schultz; S L Spahr; J R Lodge
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of dairy science     Volume:  65     ISSN:  0022-0302     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  1982 Oct 
Date Detail:
Created Date:  1983-02-14     Completed Date:  1983-02-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  2011-4     Citation Subset:  IM    
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MeSH Terms
Goats / physiology*
Milk / analysis*
Pregnancy Tests / veterinary*
Progesterone / analysis*
Reg. No./Substance:

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

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