Linked Life Data

1808163

Source:http://linkedlifedata.com/resource/pubmed/id/1808163

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
1992-5-21
pubmed:abstractText
Most estrus synchronization schemes facilitate the use of artificial insemination; however, combining estrus synchronization with natural service also offers several benefits to beef producers. This experiment was designed to study the effectiveness of one injection of prostaglandin F2 alpha (PGF2 alpha) 96 h after introduction of intact bulls on estrus synchronization and calving distribution of beef cows and heifers. Three hundred sixty beef cows and 45 beef heifers in seven trials were allotted by age, breed, and prior calving date to one of two treatments. Within each subclass, one group was injected with an appropriate dose of PGF2 alpha and the second group at each location received 5 ml of saline (SAL). Cows were classified as estrual or anestrual at the start of breeding based on serum progesterone levels and were observed for behavioral estrus regularly during the first 25 d of the breeding season in two of the trials (d 0 = day before bull turn-in). Pregnancy data and calving dates were recorded in each of the studies. All cows were palpated per rectum for pregnancy approximately 70 d after the introduction of bulls. During d 5 to 9 after treatment, the percentage of cows exhibiting behavioral estrus (P = .02) and the pregnancy rate (P = .02) obtained was greater for PGF2 alpha-treated cows than for SAL-treated cows. There were 6.5% more (P = .05) calves born during the overall calving period from animals treated with PGF2 alpha compared with those in the SAL group. In summary, treatment of cows and heifers with PGF2 alpha 96 h after bull turn-in was effective in synchronizing behavioral estrus of beef cows and heifers and increasing the calving rate during the subsequent calving season.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0021-8812
pubmed:author
pubmed:issnType
Print
pubmed:volume
69
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
4670-7
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Effect of a prostaglandin F2 alpha injection 96 hours after introduction of intact bulls on estrus and calving distribution of beef cows.
pubmed:affiliation
Anim. Sci. Dept., University of Missouri, Columbia 65211.
pubmed:publicationType
Journal Article