Different Therapeutic Approaches for Treatment of Repeat Breeder Cows and its Effect on Maximization Conception Rate in Holstein Dairy Cows

Document Type : Original Article

Authors

1 Umer Dairy Farm, Lahor-Punjab, Pakistan

2 Department of Theriogenology, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Menofia 32897, Egypt

Abstract

The objective of this study was to compare therapeutic approaches of repeat breeder cases in Holstein dairy cows and its effect on pregnancy rate/artificial insemination (PR/AI). The repeat breeder cows (n=62) which received intrauterine infusion of penicillin-streptomycin combination (Pentomycin) after A.I which yielded the highest pregnancy results (68.33%), while intrauterine benzyl penicillin to repeat breeder cows (n=32) lead to establishment of pregnancy at a rate of (31.25%) of treated cows. Insertion of CIDR on 5th day after A.I in repeat breeder cows (n=25) was accompanied by (52%) PR/AI, and, a twice used PRID2 in cows (n=12) gave satisfactory PR/AI (41.67%). Single administration of hCG 2500 IU (n=47) on 5th day after A.I was accompanied by an increased PR/AI to (89.36%). In spite of that a single dose of 3300 IU hCG (n=126) on day 5 after AI decreased PR/AI in treated cows to (48.41%) and the same trend was observed in repeat breeder cows which received 5000 IU hCG n=(17) single dose (47.05%). Moreover, repeated administration of a small dose of hCG 1000 IU on days 4, 5 and 6 after AI (n=104) gave (60.58%) PR/AI.
 

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Journal of Current Veterinary Research
Volume 4, Issue 1
April 2022
Pages 168-174

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