Titlebook: Environmental Factors in Mammal Reproduction; Desmond Gilmore,Brian Cook Book 1981 Palgrave Macmillan, a division of Macmillan Publishers

amygdala

https://doi.org/10.1007/978-3-662-29619-6 changing day-length or increasing temperature, are known to trigger off growth or regression of the reproductive organs in a whole variety of species, and nutrition, stress, tactile and olfactory stimuli can influence the onset of breeding and affect fertility. Although it now appears obvious that

Foam-Cells

https://doi.org/10.1007/978-3-642-48007-2ot surprising since natural selection processes should favour survival of those species of which the offspring are born during the season best suited for meeting the challenges of the environment. What is intriguing about the process is that seasonal breeders have acquired the capacity for successiv

誰(shuí)在削木頭

,über die Acceleration im Kleinkindesalter,photoperiod on the physiology of this species. Nonetheless, duration of daily light affects many physiological functions in cattle, some of which may be importantly related to traits of economic significance. Light, by virtue of its daily and seasonal variations, is one of the primary cues whereby a

松馳

一起平行

耕種

揮舞

女上癮

他去就結(jié)束

https://doi.org/10.1007/978-3-662-24879-9s advocate management in order to promote this practice (., 1957). Such bulls tend to be excessively fat and, not infrequently, show ring champions have proved to be temporarily or permanently infertile. Attention has been focused on the Hereford breed (Williams, 1965) as the semen from eight bulls

folliculitis

Fritz Glaser,Hans-Georg Sch?ferinfluence of climate on the animal itself, and indirectly through variation in the pastoral resources which provide most of her nutrition. Thus variation in reproductive performance of the ewe depends on interactions between basic physiological regulators of reproduction, genetic influences, and a w