{"title":"Effects of photoperiod on reproduction of cattle: a review","authors":"Prasanna Pal, A. Aggarwal, R. Deb","doi":"10.1080/09291016.2022.2102707","DOIUrl":null,"url":null,"abstract":"ABSTRACT A photoperiod is the time duration when animals are exposed to light in an entire day. An exposure of 16 hours or more is considered a long-day photoperiod and 8 hours of light is a short-day photoperiod. Exposure to light prevents the secretion of melatonin from the pineal gland. Melatonin can influence the release of several hormones, including prolactin, cortisol, kisspeptin, GnRH and others. Eventually, it can also affect the reproductive performance of the animal. Though cattle are not a seasonal breeder, photoperiod has an indirect role in the onset of puberty, pregnancy and parturition. It can also promote the growth rate of the heifers and enhance their reproductive capabilities, which are very much desired by the producers. Therefore, photoperiod can be used as an effective and non-invasive tool in the reproductive management of cattle.","PeriodicalId":9208,"journal":{"name":"Biological Rhythm Research","volume":null,"pages":null},"PeriodicalIF":1.0000,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biological Rhythm Research","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1080/09291016.2022.2102707","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"BIOLOGY","Score":null,"Total":0}
引用次数: 1
Abstract
ABSTRACT A photoperiod is the time duration when animals are exposed to light in an entire day. An exposure of 16 hours or more is considered a long-day photoperiod and 8 hours of light is a short-day photoperiod. Exposure to light prevents the secretion of melatonin from the pineal gland. Melatonin can influence the release of several hormones, including prolactin, cortisol, kisspeptin, GnRH and others. Eventually, it can also affect the reproductive performance of the animal. Though cattle are not a seasonal breeder, photoperiod has an indirect role in the onset of puberty, pregnancy and parturition. It can also promote the growth rate of the heifers and enhance their reproductive capabilities, which are very much desired by the producers. Therefore, photoperiod can be used as an effective and non-invasive tool in the reproductive management of cattle.
期刊介绍：
The principal aim of Biological Rhythm Research is to cover any aspect of research into the broad topic of biological rhythms. The area covered can range from studies at the genetic or molecular level to those of behavioural or clinical topics. It can also include ultradian, circadian, infradian or annual rhythms. In this way, the Editorial Board tries to stimulate interdisciplinary rhythm research. Such an aim reflects not only the similarity of the methods used in different fields of chronobiology, but also the fact that many influences that exert controlling or masking effects are common. Amongst the controlling factors, attention is paid to the effects of climate change on living organisms. So, papers dealing with biometeorological aspects can also be submitted.
The Journal publishes original scientific research papers, review papers, short notes on research in progress, book reviews and summaries of activities, symposia and congresses of national and international organizations dealing with rhythmic phenomena.
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