Article Title
Influence of dietary energy levels on reproductive function and fertility in yearling beef heifers
Keywords
Cattlemen's Day, 1994; Kansas Agricultural Experiment Station contribution; no. 94-373-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 704; Beef; Beef heifers; Energy levels; Ovarian function; Fertility
Abstract
Fifty-nine heifers were allotted to be fed at two different energy levels. One group gained 1.77 lb/hd/day, and the other 1.25 lb/hd/day. Estrus was synchronized with the MGA/prostaglandin system. After MGA removal, ovarian development was monitored daily by ultrasound (10 per group) until estrous was detected following the PGF injection. Heifers were inseminated artificially based on estrus behavior. Faster gaining heifers had higher final body condition scores and greater changes in body condition score. The high energy diet caused a slight (P=.11) decrease in AI pregnancy rate for purebred heifers.
First page
104
Last page
106
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
Utter, S.D. and Corah, L.R.
(1994)
"Influence of dietary energy levels on reproductive function and fertility in yearling beef heifers,"
Kansas Agricultural Experiment Station Research Reports:
Vol. 0:
Iss.
1.
https://doi.org/10.4148/2378-5977.2074
