dc.contributor.author |
Perry, R.C. |
|
dc.contributor.author |
Boyd, G.W. |
|
dc.contributor.author |
Goehring, T.B. |
|
dc.contributor.author |
Corah, L.R. |
|
dc.date.accessioned |
2010-12-01T22:35:56Z |
|
dc.date.available |
2010-12-01T22:35:56Z |
|
dc.date.issued |
2010-12-01 |
|
dc.identifier.uri |
http://hdl.handle.net/2097/6737 |
|
dc.description.abstract |
Four trials were conducted to evaluate the effectiveness of Melegestrol
Acetate (MGA ®) and prostaglandin (PGF) in inducing and synchronizing estrus.
In trial 1, treated heifers were fed MGA for 7 days and given a PGF
injection on either the first or last day of MGA feeding. The 7-day estrus response
was higher (P<.01) for treated heifers than untreated controls.
In trial 2, treated cows were fed MGA for 7 days and given a PGF
Injection on the last day of MGA feeding or 13 days after the last day of MGA
feeding. The 7-day estrus response was also higher (P<.01) in treated cows.
In trial 3, 59 cows were fed MGA for 7 days followed by a PGF injection,
and exposed to bulls for 66 days. The MGA-PGF treatment was ineffective in
synchronizing estrus and hastening conception.
In trial 4, feeding MGA for 7 days successfully synchronized estrus in.
cycling cows, but first service conception rates were reduced by 10% in the
Kansas study and by 16% in a four state study. |
en_US |
dc.publisher |
Kansas State University. Agricultural Experiment Station and Cooperative Extension Service |
en_US |
dc.relation.isPartOf |
Cattlemen’s Day, 1987 |
en_US |
dc.relation.isPartOf |
Kansas Agricultural Experiment Station contribution; no. 87-309-S |
en_US |
dc.relation.isPartOf |
Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 514 |
en_US |
dc.subject |
Beef |
en_US |
dc.subject |
MGA |
en_US |
dc.subject |
Prostaglandin |
en_US |
dc.subject |
Estrus |
en_US |
dc.subject |
Synchronization |
en_US |
dc.title |
Effects of MGA and prostaglandin on estrus induction and
synchronization in cows and heifers |
en_US |
dc.type |
Conference paper |
en_US |
dc.date.published |
1987 |
en_US |
dc.citation.epage |
70 |
en_US |
dc.citation.spage |
66 |
en_US |
dc.description.conference |
Cattlemen's Day, 1987, Kansas State University, Manhattan, KS, March, 1987 |
en_US |