Leptin
| Autor: | Baker, Jerome, Brown, Dan T., Pence, Mel, Vann, Rhonda, Keisler, Duane H. |
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| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| DOI: | 10.21423/aabppro20025027 |
| Popis: | Lutenizing hormone production and pulse frequency are the keys to initiating puberty in heifers. Thus, leptin appears to be a key element in partitioning of energy resources in direct response to energy availability. Energy partitioning in the bovine allocates available energy first to body maintenance, and as more energy becomes available, to growth, then to lactation and lastly to reproduction. Fat reserves accumulate as energy becomes abundant. The production of leptin by adipocytes affects leptin concentration at the neuro-receptor site level, and that determines how energy resources are partitioned. If this concept is accurate, then a threshold level of leptin, greater than that required to maintain body homeostasis and provide for growth, must be available to initiate the onset of puberty in beef heifers. American Association of Bovine Practitioners Proceedings of the Annual Conference, 2002 |
| Databáze: | OpenAIRE |
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