INDUCTION OF ESTRUS, OVULATION AND FERTILITY IN PREPUBERAL GILTS
نویسندگان
چکیده
منابع مشابه
Induction of Estrus, Ovulation and Fertility in Prepuberal Gilts
Induction of synchronized estrus and ovulation in prepuberal gilts is utilized in our laboratory to study factors influencing fertility and early embryonic development. Prepuberal females provide an inexpensive source of fertilized eggs, and they are not complicated by the presence of estrous cycles. Thus, estrus inducing treatments can be applied at any time. In the first of four experiments r...
متن کاملInduction of ovulation and fertility in prepuberal gilts.
This study was conducted to evaluate fertili ty in 160 day-old gilts. In Experiment 1, 28 gilts in the following five groups were injected with (1) vehicle, (2) 500 /ag of a synthetic gonadotropin releasing hormone (GnRH) anal ogne [ D-Ala 6-des-Gly-NH2101 LH-RH-ethylamide (AY 25205), (3) a cbmbination of 400 IU of pregnant mares' serum gonadotropin and 200 IU of human chorionic gonadotropin (4...
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 ...
متن کاملThe effect of Gonadotrophins on estrus induction and fertility in prepubertal gilts
The aim of our study was to investigate the efficacy of exogenous gonadotrophin to induce puberty and pregnancy in prepubertal gilts which had reach the weight of fully grown pigs. The animals used in the study included 195 crossbreed German Landrace gilts aged between 150-180 days old, weighing between 75-90 kg and 24 crossbreed German Landrace adult male pigs. The prepubertal gilts of Group I...
متن کاملPrecocious estrus and reproductive ability induced by PG 600 in prepuberal gilts.
A total of 29 SPF Large White prepuberal gilts (mean age 152 days at treatment) were examined for estrous and ovulatory responses after PG 600 treatment. After treatment, 85.2% of the gilts showed standing estrus within 6 days. Whereas the treatment-to-estrus interval and duration were 3.7 and 1.9 days respectively. As ovulation occurred on Day 5 to 6, appropriate timing of artificial inseminat...
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ژورنال
عنوان ژورنال: Annales de Biologie Animale Biochimie Biophysique
سال: 1975
ISSN: 0003-388X
DOI: 10.1051/rnd:19750226