Role of glucose, fatty acids and protein in regulation of testicular growth and secretion of gonadotrophin, prolactin, somatotrophin and insulin in the mature ram
Article
Article Title | Role of glucose, fatty acids and protein in regulation of testicular growth and secretion of gonadotrophin, prolactin, somatotrophin and insulin in the mature ram |
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ERA Journal ID | 16803 |
Article Category | Article |
Authors | Boukhliq, Rachid (Author), Martin, Graeme B. (Author), White, Colin L. (Author), Blackberry, Margaret A. (Author) and Murray, Peter J. (Author) |
Journal Title | Reproduction Fertility and Development |
Journal Citation | 9 (5), pp. 515-524 |
Number of Pages | 11 |
Year | 1997 |
Place of Publication | Australia |
ISSN | 1031-3613 |
1448-5990 | |
Digital Object Identifier (DOI) | https://doi.org/10.1071/R96113 |
Web Address (URL) | https://www.publish.csiro.au/rd/R96113 |
Abstract | This study tested whether the effects of nutrition on gonadotrophin secretion and testicular growth in mature rams are due to increases in the supply of glucose, fatty acids (FA) or amino acids. Responses to protein (casein) and glucose, alone or in combination, were compared with responses to lupin gram and responses to a combination of protein, glucose and FA (acetate, propionate and vegetable oil). Glucose and casein were infused intra-abomasally whereas lupins and FA were added to the diet Lupin feeding decreased blood growth hormone (GH) concentrations, but increased pulsatile luteinizing hormone (LH) secretion and increased the concentrations of follicle-stimulating hormone (FSH), prolactin, glucose and insulin. These effects were associated with testicular growth. Glucose or casein increased insulin concentrations and decreased GH concentrations, but did not affect gonadotrophins or testicular growth. There was no synergism between casein and glucose responses elicited by adding FA to the glucose+casein treatment were similar to those observed with lupins. In conclusion, the reproductive axis does not seem to be closely linked with dietary intakes of amino acids or with circulating concentrations of glucose, insulin or GH. However, the energetic components of the diet, particularly the fatty acids, appear to play a key role in the reproductive responses to changes in nutrition. |
Keywords | casein, testis |
ANZSRC Field of Research 2020 | 300305. Animal reproduction and breeding |
300301. Animal growth and development | |
300302. Animal management | |
300303. Animal nutrition | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Western Australia |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q63qy/role-of-glucose-fatty-acids-and-protein-in-regulation-of-testicular-growth-and-secretion-of-gonadotrophin-prolactin-somatotrophin-and-insulin-in-the-mature-ram
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