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Asian-Australas J Anim Sci > Volume 10(5); 1997 > Article
Animal Reproduction and Physiology
Asian-Australasian Journal of Animal Sciences 1997;10(5): 519-522.
DOI: https://doi.org/10.5713/ajas.1997.519    Published online October 1, 1997.
Induction of lactation and reproductive response in non-producing buffalo heifers following steroid hormone treatment
O. K. Hooda, M. L. Kaker, O. P. Dhanda, M. M. Galhotra, M. N. Razdan
Abstract
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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