Zobrazeno 1 - 10
of 20
pro vyhledávání: '"K W, Entwistle"'
Publikováno v:
Bioscientifica Proceedings.
Publikováno v:
Biology of reproduction. 55(6)
The aim of this study was to monitor endocrine and ovarian changes immediately preceding the onset of nutritionally induced anestrus. Daily blood samples were obtained from 14 postpubertal heifers for one estrous cycle (initial estrous cycle). Subseq
Publikováno v:
Journal of reproduction and fertility. 104(1)
This study examined the effects of live mass on ovarian follicular dynamics in heifers before and after the onset of nutritional anoestrus. The effects of decreased live mass on secretion of progesterone, LH and FSH were also investigated. Ovarian ch
Publikováno v:
Journal of reproduction and fertility. 104(1)
Changes in pulsatile secretion of LH, FSH, oestradiol and progesterone were related to the growth phase, early plateau phase and regression phase of the first ovarian dominant follicle of the oestrous cycle in Bos indicus heifers. Relationships betwe
Publikováno v:
Journal of reproduction and fertility. Supplement. 49
Publikováno v:
Journal of reproduction and fertility. Supplement. 49
The focus of this review is the physiological effects of undernutrition on ovarian follicle growth and the occurrence of ovulation in postpartum cows. Evidence suggests that moderate levels of underfeeding, before or after calving, may interfere with
Publikováno v:
Theriogenology. 36(5)
Weights of the gravid uterus and fetus as well as the fetal measurements were determined at slaughter for 107 Bos taurus cows grazed on improved pastures and for 70 Bos indicus cows grazed on native pastures in northern Australia. The stage of gestat
Response in female fertility and calf growth to selection for pregnancy rate in tropical beef cattle
Publikováno v:
Australian Journal of Agricultural Research. 44:1509
Direct response to divergent selection based on estimated breeding value for female pregnancy rate in a herd of Bos indicus cross cattle was evaluated along with correlated responses in calf survival, weaning rate, cow liveweight and calf growth. Pre
Autor:
K W Entwistle, P W Ladds
Publikováno v:
British Journal of Cancer
Observations were made over a 4-year period on squamous cell carcinomas on the ear and other areas poorly covered by hair or wool, sheep pastured in the hot, dry environment of north-western Queensland. Overall incidence in the flock was higher than
Autor:
S. Wildeus, K. W. Entwistle
Publikováno v:
Reproduction. 69:711-716
Scrotal insulation for 48 h raised subcutaneous scrotal temperature by 4 degrees C in hybrid Bos indicus X Bos taurus bulls. The incidence of decapitated spermatozoa in the ejaculate increased significantly between 6 and 14 days and that of protoplas