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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
1983-3-11
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pubmed:abstractText |
Two experiments were carried out to assess the influence of undernutrition on postpartum ovulation in nursing Charolais cows after PMSG injection. In each experiment, the nursing cows were divided into 2 groups: one fed at a low nutritional level and the other at a normal nutritional level. In the first experiment, 19 animals were injected on post-partum days 15 and 30 with 600 IU of PMSG; in the second experiment, 34 received the same injection on post-partum day 54 after 9 days of priming with a Norgestomet implant. On post-partum day 15, only one cow in each group ovulated. At post-partum day 30, 1 out of 8 cows at the low nutritional plane ovulated vs 5 out of 9 at the normal nutritional plane (P less than 0.05). Likewise, on post-partum day 54, 5 out of 14 cows at the low nutritional plane ovulated vs 17 out of 17 at the normal nutritional level (P less than 0.05). Therefore, there is a time during the post-partum period when the nursing cow ovary does not respond to PMSG by ovulation. The length of this time is increased by undernutrition.
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pubmed:language |
fre
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0181-1916
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
21
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
577-83
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:6818639-Animals,
pubmed-meshheading:6818639-Cattle,
pubmed-meshheading:6818639-Female,
pubmed-meshheading:6818639-Gonadotropins, Equine,
pubmed-meshheading:6818639-Lactation,
pubmed-meshheading:6818639-Ovary,
pubmed-meshheading:6818639-Ovulation Induction,
pubmed-meshheading:6818639-Postpartum Period,
pubmed-meshheading:6818639-Pregnancy,
pubmed-meshheading:6818639-Protein-Energy Malnutrition,
pubmed-meshheading:6818639-Time Factors
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pubmed:year |
1981
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pubmed:articleTitle |
[Influence of undernutrition in the lactating cow on ovulation induction by serum gonadotropins (PMSG) during the post-partum period].
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pubmed:publicationType |
Journal Article,
English Abstract
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