Zobrazeno 1 - 10
of 70
pro vyhledávání: '"B.J. Restall"'
Autor:
Graeme Martin, Rex J. Scaramuzzi, Stephen W. Walkden-Brown, B.J. Restall, Margaret Blackberry
Publikováno v:
Small Ruminant Research. 26:239-252
Australian cashmere goat bucks exhibit marked seasonal changes in gonadotrophin secretion and growth. We investigated the mechanisms underlying these changes by testing the effects of castration and gonadal steroid replacement in grazing bucks at 29
Publikováno v:
Animal Reproduction Science. 40:299-303
Oestrous female Australian cashmere goats were shown to induce ovulation in seasonally anovulatory counterparts. Sixty anovulatory does were exposed to either ovariectomised (OVX) does or oestrogen treated OVX does in isolated groups of ten, with thr
Publikováno v:
Animal Reproduction Science. 32:55-67
Exposing seasonally anovulatory does to bucks may induce a synchronised onset of fertile reproductive cycling, the ‘male effect’. The role of fleece and urine odours from the buck in mediating this effect was examined in three experiments. In eac
Publikováno v:
Animal Reproduction Science. 32:41-53
The ovulatory and oestrous responses of seasonally anovulatory Australian cashmere does to the introduction of bucks in six experiments are reviewed. Experiments were carried out at Wollongbar (28°48′S, 153°25′E) in February (Experiment 5), Mar
Publikováno v:
Journal of Pineal Research. 13:85-94
Four vaccination protocols were utilized to investigate the effects of immunoneutralizing circulating melatonin on the annual cashmere growth cycle and cashmere production in Australian feral goats. A fluctuating anti-melatonin antibody response, ach
Autor:
B.J. Restall
Publikováno v:
Animal Reproduction Science. 27:305-318
Seasonal variation in reproductive activity in Australian goats was investigated in three experiments. In the first, the seasonal incidence of spontaneous ovulations was recorded by monthly endoscopy in mature does and young sheep separated from male
Publikováno v:
Theriogenology. 36:443-447
Ovarian activity was observed in native Thai goats run either alone, continuously with males, or intermittently with males at 56-day intervals between June 1985 and July 1986. Overall, the incidence of ovulation was highest in October and December (7
Publikováno v:
Theriogenology. 34:313-317
Pregnancy status was determined in two groups of native Thai goats, mated in either October (n = 116) or March (n = 37), by assay of the progesterone level in four plasma samples taken at 7 day intervals after the completion of mating. The progestero
Publikováno v:
Journal of reproduction and fertility. 103(2)
An experiment was conducted to define the seasonal changes in LH secretion in ovariectomized does with oestrogen implants and the effect of immunization against melatonin. Fifteen mature Australian cashmere goats were ovariectomized and given either
Publikováno v:
Journal of reproduction and fertility. 102(2)
The effects of season and diet on LH, FSH and testosterone concentrations, testicular mass, sebaceous gland volume and male odour were examined in mature Australian cashmere goat bucks fed ad libitum with diets of low or high quality for 16 months un