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A Comparative Study using an Opioid Antagonist and GnRH for the Treatment of Follicular Cyst in Dairy Holstein Cows

Author(s): V.O. Fuentes-Hernandez | A. Bernal-Canseco | P.I. Fuentes-Castro | H. Flores-Lopez | R. Orozco-Hernandez

Journal: Journal of Biological Sciences
ISSN 1727-3048

Volume: 9;
Issue: 8;
Start page: 833;
Date: 2009;
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Keywords: Follicular | cysts | dairy cattle | GnRH | naloxone

With the objective of studying the effect of naloxone on the presence of Follicular cysts in dairy cattle, 60 high production cows with follicular cysts were selected. Divided at random in three equal Groups. Group 1 (n = 20) were treated with an im injection of 100 μg GnRH. Group 2 (n = 20) was treated with 5 mg naloxone im at 12 hour intervals for three consecutive days. Group 3 was considered as control and injected with saline solution. In group 1, 13/20 (65%) treated with GnRH showed follicular dehiscence and in group 2 treated with naloxone 18/20 (90%) showed follicular dehiscence. Group 3 (n = 20) saline treated cystic cows; 4/20 presented spontaneous estrous and pregnancy. After the statistic analysis χ2 a significant difference (p
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