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| Titel: |
Evaluation of the Effect of GnRH Administration Within 3 h After Onset of Estrous on Conception Rate in Dairy Cows |
| Auteur: |
N. Shams-Esfandabadi A. Shirazi M. Bonyadian |
| Verschenen in: |
Pakistan journal of biological sciences |
| Paginering: | Jaargang 9 (2006) nr. 13 pagina's 2503-2507 |
| Jaar: |
2006 |
| Inhoud: |
Various hormonal treatments have been used in attempts to improve pregnancy rate. In cattle GnRH or GnRH agonists were used at first or later AI and at times ranging from 6 h before to 5, 6, 11, 14, or 15 days after AI. The objective of this study was to evaluation the effect of administration of GnRH within 3 h after estrous observation on conception rate in dairy cows. Within 3 h after standing estrous cows in treatment group (n = 42) received an i.m. injection 5 mL of GnRH (gonadorelin, Aburaihan, Iran, Each mL contains: 5 μg luliberin A). Controls cows (n = 42) did not received any treatment. The study population was stratified by parity, milk yield production, days in milk and number of AI. Pregnancy rate between GnRH treated and control cows were 28.57 and 38.09%, respectively. There was no significant differences between two groups (p<0.05). |
| Uitgever: |
Asian Network for Scientific Information (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 55 van 112 gevonden artikelen
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