منابع مشابه
Reproductive behavior of the stallion.
The reproductive behavior of semi-wild and feral horses is described briefly in order to provide a background on the reproductive patterns and the specific behavioral elements comprising courtship and mating in the horse. The reproductive behavior of the domestic stallion is discussed at length as are various breeding conditions and normal breeding performance. Finally, sexual behavior problems...
متن کاملReproductive physiology of the stallion. IV. Seasonal changes in the testosterone concentration of peripheral plasma.
The normal equine breeding season begins in the spring and extends through mid-summer. It is characterized by marked increases in sperm output and seminal volume, as well as behavioural changes manifested in decreased reaction time and the number of mounts per ejaculation (Pickett & Voss, 1972). The production of androgenic steroids by the equine testis has been investigated both in vivo (Lindn...
متن کاملASAS/ADSA Physiology: Reproductive Physiology
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...
متن کاملReproductive Physiology
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...
متن کاملAdvances in 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...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1974
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0400113