Rivera, H <br/><br/>
Presynchronization with gonadotropin-releasing hormone does not improve fertility in Holstein heifers.  [electronic resource] 

 -  Journal of dairy science  Oct 2006 
 - 3810-6 p.  digital 
<br/><br/> Publication Type: Comparative Study; Evaluation Study; Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>1525-3198 
<br/><br/><label>Standard No.: </label>10.3168/jds.S0022-0302(06)72422-5  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal Husbandry--methods<br/>Animals<br/>Cattle--physiology<br/>Corpus Luteum--drug effects<br/>Estrus Synchronization--methods<br/>Female<br/>Fertility--drug effects<br/>Gonadotropin-Releasing Hormone--administration & dosage<br/>Insemination, Artificial--veterinary<br/>Logistic Models<br/>Male<br/>Ovary--diagnostic imaging<br/>Pregnancy<br/>Pregnancy Rate<br/>Progesterone--blood<br/>Prostaglandins F--administration & dosage<br/>Random Allocation<br/>Sexual Behavior, Animal<br/>Time Factors<br/>Ultrasonography