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Ovarian follicular dynamics in does on anoestrous period after progestagen treatment Dinâmica folicular ovariana em cabras em anestro após tratamento progestágeno

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Author(s): Jurandir Ferreira da Cruz | Darcio Ítalo Alves Teixeira | Davide Rondina | Vicente José de Figueiredo Freitas

Journal: Revista Brasileira de Saúde e Produção Animal
ISSN 1519-9940

Volume: 9;
Issue: 4;
Date: 2008;
Original page

ABSTRACT
Eighteen Anglonubian (n = 9) and Saanen (n = 9) goats were monitored by ultrasonography to characterize the follicular dynamic after induced estrus by progestagen treatment during seasonal anoestrous. In both breeds, the progesterone level reached values above 1.0 ng.ml-1 at D3 and decreased below this value at D18. Among Anglonubian goats, 33.3, 44.5, and 22.2%, respectively, showed two, three and four follicular waves while among Saanen goats 87.5% showed three and 12.5% showed two follicular waves. In both breeds differences among the days of emergence follicular waves, as well among the days that the biggest follicle of each wave reached maximum diameter were detected (P>0.05). In the goats which presented three waves pattern, the emergence day of first, second and third wave occurred at days 2.0 ± 0.9; 9.3 ± 1.4 e 15.1 ± 0.8 versus 1.0 ± 0.5; 6.7 ± 0.9 e 14.6 ± 1.0 in Anglonubian and Saanen, respectively. In the early-mid luteal phase (D8 to D10) the progesterone concentration was higher in four waves goats than two and three waves goats (P
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