dc.contributor.author |
Perry, R.C. |
|
dc.contributor.author |
Corah, L.R. |
|
dc.contributor.author |
Cochran, R.C. |
|
dc.contributor.author |
Brethour, J.R. |
|
dc.date.accessioned |
2010-11-06T20:42:20Z |
|
dc.date.available |
2010-11-06T20:42:20Z |
|
dc.date.issued |
2010-11-06 |
|
dc.identifier.uri |
http://hdl.handle.net/2097/6486 |
|
dc.description.abstract |
The effect of hay quality on the onset of puberty and subsequent reproductive
performance was evaluated in 51 3/4 Hereford x 1/4 Angus (HA) heifers and 47 3/4
Hereford x 1/4 Brahman (HB) heifers. Two qualities of alfalfa hay were fed ad
libitum. along with an average of 3.1 lbs/hd/day of ground sorghum grain.
HB heifers were heavier and carrying more backfat and body condition (P<.05)
at the start of the experiment and they maintained their weight advantage through
out the experiment. A higher (P<.05) percent of the UB heifers reached puberty by
14 and 15 months of age and became pregnant during a 45 day artificial insemination
breeding period. HA heifers reached puberty at a lighter (P<.05) average weight.
Heifers fed high quality alfalfa hay were heavier (P<.05) by the start of the
breeding season and were carrying more (P<.05) backfat and body condition. A
higher percent (P=.08) of the heifers receiving higher quality hay reached puberty by
16 months of age and a higher (P=.10) percent became pregnant during the breeding
period.
Heifers inseminated at their pubertal estrus had lower (P=.04) first service
conception rates than heifers inseminated at their second or later estruses (52% vs.
88%). |
en_US |
dc.publisher |
Kansas State University. Agricultural Experiment Station and Cooperative Extension Service |
en_US |
dc.relation.isPartOf |
Kansas Agricultural Experiment Station contribution; no. 88-363-S |
en_US |
dc.relation.isPartOf |
Cattlemen’s Day, 1988 |
en_US |
dc.relation.isPartOf |
Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 539 |
en_US |
dc.subject |
Beef |
en_US |
dc.subject |
Hay |
en_US |
dc.subject |
Puberty |
en_US |
dc.subject |
Performance |
en_US |
dc.subject |
Heifers |
en_US |
dc.title |
Effect of hay quality and breed on the onset of puberty and subsequent reproductive performance in beef heifers |
en_US |
dc.type |
Conference paper |
en_US |
dc.date.published |
1988 |
en_US |
dc.citation.epage |
9 |
en_US |
dc.citation.spage |
5 |
en_US |
dc.description.conference |
Cattlemen's Day, 1988, Kansas State University, Manhattan, KS, March, 1988 |
en_US |