CLINICAL AND THERAPUTIC STUDY OF POSTPARTURIENT ANESTROUS OF COW.

The present study aimed at evaluating the effect of different combination drugs to treatment the postpartum anestrous in cows. Fifteen local dairy cows, 3-10 years old, weights 200-300 kg and postpartum period (15-15) months. This study was conceded in Dhi Qar province/Iraq 2016. The cows were divided into five groups (10 cows in each group); four groups in which the four different hormonal regimes were used for treatment and a fifth group was considered as a control group. First treatment group (T₁) using a hormonal system (1 ml estradiol benzoate (synthetic benzoate ester of estradiol) (2mg)/SC + 3 ml colproestenol (synthetic analogue of prostaglandin F2) (750 mg)/SC). Second treatment group (T₂) using a hormonal system (1 ml estradiol benzoate (2mg)/SC. + 5 ml oxytocin (5 IU)]/SC). Third treatment group (T₃) using a hormonal system (3 ml colproestenol (750 mg)/IM + 5ml oxytocin (50 IU)/IM). Fourth treatment group (T₄) using a hormonal system (1 ml estradiol benzoate (2mg)/SC + 3 ml colproestenol (750 mg)/IM + 5ml oxytocin (50 IU)]/IM). Fifth group (control group) only using a rectal palpation and Injection 5 ml normal saline (NS). The results showed significant differences to responsible to treatment and appear of estrous signs between all groups (at p <.05) and the higher percentage (90%) was registered in the group one (T₁) of treatment that in which used1) ml estradiol benzoate (2mg)/SC+ 3 ml colproestenol (750 mg)/SC). The results also showed there was a significant difference between the first and second treatments, between the second and third, as well as between the second and fourth group (at p <.05), while the results did not show a significant difference between the first and the third, first and fourth as well as between fourth and third (at p <.05). The percentages of responsible to treatment and appear of estrous signs during using of different hormonal regimes was 90%, 40%, 70% and 50% for the T₁, T₂, T₃ and T₄ respectively comparative with 0% at the control group. The pregnancy rate of treatment cows that showed estrous sings according the number of group was 55%, 50%, 57% and 40% for the T₁, T₂, T₃ and T₄ respectively. [ABSTRACT FROM AUTHOR]