18. Altered luteal function following induced ovulation in dairy cattle
نویسندگان
چکیده
منابع مشابه
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...
متن کاملcortisol 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...
متن کاملEFFECT OF FOLLICLE SIZE AT TIME OF GnRH-INDUCED OVULATION ON LUTEAL FUNCTION AND FERTILITY
The use of GnRH in fixed-time AI protocols results in the ovulation of a wide range of follicle sizes. The objective of this experiment was to determine the effect of follicle size at induced ovulation on corpus luteum (CL) function and fertility in cyclic and anestrous cows. Multiparous beef cows (n = 45) were assigned to one of three treatments: Cyclic cows treated with the CO-Synch protocol ...
متن کاملThe effect of metritis on luteal function in dairy cows
BACKGROUND Disturbed uterine involution impairs ovarian function in the first weeks after calving. This study analyzed the long-term effect of metritis on luteal function of 47 lactating Holstein-Friesian cows during the first four postpartum estrous cycles. Cows with abnormal uterine enlargement and malodorous lochia were classified as having metritis (group M, n = 18), and all others were con...
متن کاملInduced ovulation and fertility in prepuberal cattle, sheep and swine.
DEVELOPMENT of the reproductive system takes place throughout the prepuberal period, and may continue after puberty until full sexual maturity is reached. Some researchers consider that the onset of puberty is marked by full behavioral symptoms of estrus, particularly acceptance of the male, whereas others consider ovulation as the well-defined beginning of puberty. We will consider puberty to ...
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ژورنال
عنوان ژورنال: Reproduction, Fertility and Development
سال: 2003
ISSN: 1031-3613
DOI: 10.1071/srb03ab18