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Induction of lactation and reproductive response in non-producing buffalo heifers following steroid hormone treatment |
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O. K. Hooda, M. L. Kaker, O. P. Dhanda, M. M. Galhotra, M. N. Razdan |
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| Abstract |
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Buffalo heifers weighing from 400-500 kg and having a history of reproductive problems like anestrus, irregular estrus or failure to conceive after repeated inseminations were administered subcutaneously with estradiol -17棺 and progesterone in two dosage rate 0.1 mg and 0.25 mg, respectively, per kg body weight per day for 7 days in experiment-I and 0.1 mg and 0.125 mg, respectively, per kg body weight per day for 7 days in experiment II. In experiment-1, 9 out of 10 buffaloes responded positively to the hormonal treatment. Milk secretion started between 14-20 days after the start of the treatment. The total milk yield in the successfully induced animals varied from 471.98-625.40 kg. The average daily milk yield varied from 2.08-2.76 kg and peak yield from 3.6-5.3 kg. The time taken to reach peak yield varied from 12-14 weeks. In experiment-II the established lactation response was absent, although milk secretion process was initiated, the yield could not reach more than 50-100 gm at each milking. In experiment-I, the first estrus occurred between days 87-231 following the hormonal treatment. Four animals in which lactation was established successfully got pregnant after one or two services. In experiment-II the first estrus occurred between 85-173 days following the treatment and only one animal got pregnant. |
| Keywords:
Lactation; Induction; Estradiol-17棺; Progesterone; Anestrus; Buffaloes |
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