Ebru Emsen  , A. Carlos  , Gimenez Diaz  , 
    Melengesterol Acetate (MGA) Induced Puberty 
in Awassi Ewe Lambs,
    Journal of Animal and Veterinary Advances,
    Volume 4,Issue 6,
    2005,
    Pages 570-571,
    ISSN 1680-5593,
    javaa.2005.570.571,
    (https://makhillpublications.co/view-article.php?doi=javaa.2005.570.571)
    Abstract: An experiment was designed to investigate the ovarian activity by which progestin administration induces puberty in Awassi ewe lambs. Prepubertal lambs were fed to provide approximately 0.125 mg/ewe lamb MGA twice daily for a 12 d period (MGA; n = 14) or to serve as untreated controls (CONT; n = 14). Laparoscopic examinations of ovaries were conducted on days 7 and 8 after last MGA feeding. The percentage of ewes having active ovary on days 7 and 8 d after last MGA feeding was significantly higher (p<0.05) for treated (56%) than for control ewes (11%). We suggest that MGA withdrawal accelerates follicle growth to the preovulatory stage and puberty was able to be induced in 9 months old Awassi ewe lambs with MGA treatment for 12 days.
    Keywords: Puberty induction;MGA;Awassi