Photoperiodic control of hormones, growth and lactation in cattle
Photoperiodic control of hormones, growth and lactation in cattle
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光周期控制牛的激素、生长和泌乳
DOI：
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发表时间：
1981
期刊：
影响因子：
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通讯作者：
H. Tucker
中科院分区：
文献类型：
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作者：
H. Tucker
Domestic cattle ovulate and conceive throughout the year, a fact that has perhaps contributed to the paucity of information concerning the effects of 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 animals schedule reproductive functions, metabolic adjustments, moults and migrations (Ringer, 1980). The focus of this chapter will be to review research on the effects of lighting on some serum hormones which affect growth and lactation in cattle.
