En las sociedades desarrolladas existe un especial interés en la manipulación de la capacidad reproductora, ya sea para su supresión/inhibición temporal, para su restauración en condiciones de infertilidad, o para el ...

Gonadotrophin releasing hormone (GnRH) analogue in combination with prostaglandin F2 alpha (PGF2a) was adiministered to VT in order to determine if it hastened the recovery of ovarian activity and uterine involution during ...

The plasmatic progesterone levels in Arabian and Andalusian mares during the reproductive cycle have been studied. In the partum there is a significant décrease in plasmatic progesterone levels. During the heat these levels ...

The influence of age and number of heats in the fertility value of Arabian and Andalusian mares have been studied. The Arabian mares have a whole fertility value 11 % higher than the Andalusian ones. The fertility is low ...

The length of heat in Andalusian and Arabian mares, and the optimum day of breeding in the first postpartum heat, have been studied. In our results the average of all the heat was 5.78 + 1.54 days. No significant diferences ...

An echographic study was made for the morphometric evaluation of the preovu latory follicle in 33 Thoroughbred Arab mares and 66 Thoroughbred Spanish mares divided within each breed into groups according to the situation ...

An echographic study was made for the diameter evaluation of the preovulatory follicle and the embryonic vesicle at 20 days postfertili¬zation on 21 Arab Thoroughbred. mares and S I Spanish grouped in primiparous and ...

Following the traditional method of exploitation, for a period of four years 165 Spanish-bred mares were observed. The heats. per month from January to June and the gestation rates in each month were determined. The number ...