A transvaginal ultrasound guided follicular aspiration technique was developed for the repeated
collection of bovine oocytes from natural cycling cows. In addition, the feasibility of using …

We compared three methods for diagnosing early pregnancy in cattle: 1) a trans-rectal
ultrasound scan of the uterus, 2) a cow-side enzymeimmunoassay (EIA) milk progesterone test 3) …

The purpose of this study was to find the economically optimal period of first conception in
gilts, addressing the issues of lifetime reproductive performance and expected herd life. A …

The ovaries of 59 pluriparous cows of unknown reproductive history were palpated, scanned
and dissected on the day of slaughter to compare the accuracy of rectal palpation and …

… Okkens AC, Dieleman SJ, Bevers MM, and Willemse AH. Evidence for the noninvolvement
… Okkens AC, Bevers MM, Dieleman SJ, and Willemse AH. Shortening of the interoestrous …

Interrelationships of circulating hormone levels and their implications for follicular development
were studied throughout the oestrous cycle with emphasis on the perioestrous period in …

Five dogs were hypophysectomized on Day 4 and 9 on Day 18. Prolactin and LH stimulation
tests showed that hypophysectomy was complete in 6 dogs only. In these dogs, the …

Repeated transvaginal ultrasound guided puncturing of visible follicles was performed for
ovum pick-up (OPU) during Periods A and B, each of which lasted 3 mo. During Period A, 10 …

The sensitivity of the pituitary to GnRH in early and late anoestrus and the indirect response
of the ovary were investigated in six adult beagle bitches. Plasma concentrations of LH and …

Pregnant gilts (3/group) were given no treatment, 10 mg bromocriptine twice daily by mouth,
from Day 111 of pregnancy to 1 day post partum , 25 mg progesterone sc at 6-h intervals …