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Animal Reproduction and Physiology
Asian-Australasian Journal of Animal Sciences 1992;5(2): 337-339.
DOI: https://doi.org/10.5713/ajas.1992.337    Published online June 1, 1992.
Trials of gonadotropin to regress ovarian cysts provoked by hormonal induction of lactation
Y. P. S. Dabas, S. C. Sud
Abstract
Successful induction of lactation in 5 nulliparous repeat breeding cows was achieved by administering diethyl stillboestrol (0.1 mg/kg B.W.) and hydroxyprogesterone caproate (0.25 mg/kg B.W.) for 3 days followed by reserpine (4 mg/day) for 4 days, and dexamethasone (16 mg/day) for one day. The treatment caused cystic ovarian condition in all the animals. Intravaginally progesteronesoaked sponges suppressed but did not eliminate the behavioural estrus. Administration of LHRH (300 關g) regressed the cysts in all animals in the first instance but the cysts reappeared in 2 animals. One animal became pregnant and delivered a normal calf.
Keywords: Cow; Induced lactation; Estrogen; Progesterone; Reserpine; Ovarian Cyst
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