The reproductive performance of cows of high and low body weight lines was evaluated in 1992-97. In the 2 lines respectively, the interval from calving to ovulation averaged 28 and 31 days (P<0.05). In cows older than 2 years, the CRs to 1st insemination were 58.8 and 70.0% respectively..

The objectives of this trial were to determine the effects of 0.5 mg estradiol benzoate administered intramuscularly 24 h after the removal of progesterone-containing intravaginal devices on the occurrence and timing of estrus, synchronized pregnancy rate and synchronized conception rate in dairy he...

AIM: To examine the effect of intramuscular barium selenate on the blood selenium concentration of horses with marginal selenium status. METHODS: Eighteen mares were assigned to one of six groups. The mares in groups 1-4 received barium selenate at 0.5, 0.75, 1.0 and 1.5 mg Se/kg, respectively, inje...

The effect of supplementation with selenium and/or iodine on growth rate, mohair production and plasma concentrations of thyroid hormones in goats was studied. Male Angora goats, 3-4 months old, were treated with 0 or 1 intraruminal Se pellet, or treated intramuscularly with iodized oil at 0, 200 or...

A single preoperative dose of antibiotic proved as effective as a preoperative and 7-day postoperative course in reducing complications following rumenotomy in cattle. Exploratory rumenotomy was performed on 29 healthy Angus steers, which were allotted to the following treatment groups: (1) no antib...

Editor of the bimonthly column, Production Animal Update in Vetscript. The New Zealand Veterinary Association, Wellington, 10(5, 7, 9, 11), 1997