Héctor Raymundo Vera Ávila

Desarrollo folicular y tasa ovulatoria en cabras criollas después de un periodo corto de consumo de trigo protegido de la degradación ruminal

To determine ovarian effects after consumption of wheat protected from ruminal degradation, 40 Creole female goats received for 11 d before a synchronized estrous, 33.2 g/kg.75 of durum wheat treated with 5 % formaldehyde and mixed with 15 % saponified tallow (TW, n=20) or milled durum wheat and separately 15 % saponified tallow (NTW, n=20). Ovarian follicular populations were characterized on d 0, 2, 4 & 6 post-estrus through ultrasound and ovulatory rate estimated on d 9 through CL count after abdominal laparoscopy. Serial blood samples were collected in four animals per experimental group from 0 to 12 h after wheat intake and serum glucose & insulin concentrations were determined. Data were analyzed through Fisher Exact Test or ANOVA for a completely randomized design. Serum glucose and total ovulations did not differ (P>0.20) between experimental groups. Serum insulin was higher (P<0.05) in TW vs NTW during the 0 to 8 h period after wheat intake (6.61 vs 4.82 I¼,UI/ml). TW group showed more follicles < 4 mm on d 0 post-estrus (7.60 vs 7.00 follicles in TW vs NTW, P<0.01), and both, number of total follicles on d 0 and the diameter of the 2nd follicle according to size on d 6 post-estrus tended to be greater in TW (9.70 vs 9.21 follicles and 2.89 vs 2.75 mm in TW vs NTW, P<0.10). Short-term TW intake could influence follicular development in Creole goats without altering ovulation rate or glucose entry to systemic circulation but might increase temporary secretion of insulin