Experiment 1 evaluated pregnancy rates (PRs) when estradiol cypionate (ECP) replaced the second GnRH injection of a timed artificial insemination (TAI) protocol for lactating dairy cows. Cows were pre-synchronized with two injections of PGF2α (Lutalyse r , Pharmacia Corp., 25 mg; i.m.) given to multiparous cows (n=170) at 40 ± 3 and 54 ± 3 d postpartum (dpp) and to primiparous cows (n=201) at 6...

This definition continues for four pages, at the end of which one still does not know what the Coordinative Conditions are, but one begins to grasp their enormity. As a biologist I am appalled, not only at the concept of a series of alegbraic conditions that will be capable of expressing biological coordination from the atomic to the societal levels, but also at the amount of factual informatio...

background:   objective: to determine knowledge of hormone therapy (ht), reproductive physiology, and menopause in a population of 40-60 year old women.   materials and methods: this cross-sectional study was conducted through a cluster sampling among 330 women in yazd, islamic republic of iran, in 2010. data was collected using a questionnaire containing questions about reproductive physiology...

of the Lancet and the British Medical Journal. When issues were at stake, the former generally expressed the views of the specialists, the whole-time internists and surgeons, and the latter took a stand for the general practitioner and family physician. Some of the statistical data will make strange reading for people whose horizons of the structure of medical care are those of the United State...

The role of prostaglandins in reproductive physiology is reviewed with particular emphasis on their possible importance in ovulation in humans. A possible interaction between gonadal steroids, biogenic amines and prostaglandins at hypothalamic-pituitary level, in relation to the release of luteinizing hormone releasing factor, and LH, is discussed. Anomalies regarding the role of oestrogens in ...

Two studies investigated the effect of a thermo-tolerant E.coli-derived phytase (QuantumTM) on performance and bone parameters of broilers fed diets varying in content of available phosphorus (AP), metabolizable energy (ME) and total lysine (TLYS). A 48-day floor pen trial used 80 pens of 16 male broilers fed corn/soya/meat-bone meal based diets formulated to commercial averages (AS) or below. ...