Evaluation of intrauterine therapies in repeat Breeder dairy cattle

Abstract

A total of 160 repeat breeder dairy cows suffering from endometritis were used in this study. The cows were divided into six groups and were subjected to different intrauterine therapy, the first group was treated with 1% of Lugol's solution, the second and third group were treated with 2 gm of Oxytetracycline and chloramphenicol respectively, while the cows in the groups four and five were subjected to an intrauterine therapy with one million units of crystalline penicillin and one tube of metrijet respectively, mean while the group six was untreated and used as a control. The animals in all groups (except the group four) were inseminated on the subsequent estrous period following therapy, while the group four was subjected to post -service treatment within 24 hours after insemination. The cows were inseminated twice with 8 hours a part between them and they were injected intravenously with 1500 I.U of hCG ( chorulon ) when delayed ovulation was suspected . Pregnancy examination by rectal palpation 50 days after the second insemination revealed pregnancy rates ( %74.28 , %72 , %68 , %60 , %40 ) for the six group respectively . The results of the present study showed no significant differences (p> 0.05) among the different treated groups, and when each of the first four treated groups compared with the control one. There was a significant differences between treated and control group (p<0.05). It was concluded that the intrauterine therapies and the injection of hCG at the time of insemination are useful in the treatment of repeat breeder cows.