Zobrazeno 1 - 10
of 10
pro vyhledávání: '"K. F. Breuel"'
Publikováno v:
Biology of Reproduction. 48:655-661
Four experiments were designed to examine the contribution of the oocyte or the follicular, oviductal, or early uterine environments to low fertility associated with the first ovulation postpartum. At 17-25 days postpartum in experiments 1, 2, and 3,
Publikováno v:
Reproduction. 97:205-212
This study investigated whether treatment with progestagen, which improves fertility after early weaning in postpartum cows, altered concentrations of gonadotrophins or development and function of follicles. Patterns of luteinizing hormone (LH), oest
Autor:
F. N. Schrick, J. E. Reber, E. K. Inskeep, J.C. Spitzer, R. L. Butcher, K. F. Breuel, A. W. Lishman
Publikováno v:
Journal of Animal Science. 70:3831-3837
The first two experiments examined the role of the uterus in low pregnancy rates of beef cows induced to ovulate by early weaning. At 20 to 25 d postpartum, one-half of the cows in Exp. 1 and 2 received a s.c. implant containing 6 mg of norgestomet (
Autor:
Robert A. Dailey, S. P. Lerner, E. K. Inskeep, R. D. Baker, R. L. Butcher, E.C. Townsend, K. F. Breuel
Publikováno v:
Theriogenology. 36:241-255
Data were obtained on 1039 recoveries of embryos from beef cows of four breeds at two locations, in clinic and on farm. General linear models procedures were utilized to determine the effects of breed, location, age of donor, dosage of follicle stimu
Publikováno v:
Theriogenology. 34:139-145
Two experiments were conducted to evaluate whether administration of human chorionic gonadotropin (hCG) before and/or after breeding influences the first-service pregnancy rate in beef heifers. In Experiment 1, 125 yearling and two-year-old heifers w
Autor:
A I, Fukuda, K F, Breuel
Publikováno v:
Human reproduction (Oxford, England). 11(12)
Platelet activating factor (PAF) was administered to female mice in order to investigate its effect on ovulation rate and on oocyte quality including their in-vitro embryonic development, implantation and uterine receptivity. In experiment 1, 4-week-
Publikováno v:
Biology of reproduction. 48(3)
Four experiments were designed to examine the contribution of the oocyte or the follicular, oviductal, or early uterine environments to low fertility associated with the first ovulation postpartum. At 17-25 days postpartum in experiments 1, 2, and 3,
Autor:
R L, Butcher, J E, Reber, A W, Lishman, K F, Breuel, F N, Schrick, J C, Spitzer, E K, Inskeep
Publikováno v:
Journal of animal science. 70(12)
The first two experiments examined the role of the uterus in low pregnancy rates of beef cows induced to ovulate by early weaning. At 20 to 25 d postpartum, one-half of the cows in Exp. 1 and 2 received a s.c. implant containing 6 mg of norgestomet (
Publikováno v:
Theriogenology. 30:613-627
Bovine jugular venous blood was collected, with and without heparin, and aliquoted into 140 12-ml tubes. Four subsamples (two heparinized and two coagulated) were centrifuged immediately (time zero) and plasma or serum was aspirated and stored at -20
Publikováno v:
Journal of Animal Science. 67:1564
In Trial 1, 26 heifers were allotted randomly to a control group or one of four groups to receive a single injection of 3,000 IU hCG on d 1, 4, 7 or 10 of an estrous cycle. Heifers next completed a nontreated cycle, and at their third estrus were rea