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Ultrasonographic evaluation of ovulatory follicle growth of anoestrous crossbred Zebu cows after treatment with norgestomet and eCG



Ultrasonographic evaluation of ovulatory follicle growth of anoestrous crossbred Zebu cows after treatment with norgestomet and eCG



Archivos Latinoamericanos de Produccion Animal 10(1): 20-23



Twelve anoestrous crossbred Zebu cows were treated with norgestomet+estradiol valerate implant (Sinchro-Mate B) for 9 days and injected with 500 IU of eCG upon removal of the implant. Follicular growth and oestrus induction were evaluated using ultrasonography. 10 cows manifested follicular growth, 8 of which produced ovulatory follicle with a mean diameter of 11.7 mm. Ovulation was confirmed by absence of the preovulatory follicle and development of a corpus luteum 7 days post-oestrus.

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Accession: 003996387

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