A. Ezzat Ahmed

Department of Animal Science, Faculty of Veterinary Medicine, South Valley University, 83523, Qena, Egypt

[ 1 ] - Cortisol and Postpartum Luteal Function in Cattle

The present study investigated serum cortisol in response to postpartum ovarian resumption and luteal function. Postpartum ovarian resumption was detected based on a rise in progesterone (P4) concentrations during three weeks after calving. Twenty two Holstein cows in a semi-closed dairy farm in Qena city, Egypt were used. The study was carried out from late March to early June; the period char...

[ 2 ] - Gonadotropin-Releasing Response to Kisspeptin-10 and Its Modulation by Progesterone in Postpartum Cyclic Cows

The present study aimed to evaluate the effect of kisspeptin-10 (Kp10), a shorter variant of kisspeptin retaining full biological activity, on the release of luteinizing hormone (LH) and follicle stimulating hormone (FSH) in cyclic adult cows, and the effect of plasma progesterone (P4)concentration on the response to Kp10 administration. The experiments were performed using five postpartum cows...

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