Effect of fat supplementation on leptin, insulin-like growth factor I, growth hormone, and insulin in cattle
We investigated the effect of fat supplementation on plasma levels of hormones related to metabolism, with special attention to leptin, in cows in early lactation and in feedlot steers. In experiment 1, 34 lactating cows received no fat or else 0.5 or 1.0 kg of partially hydrogenated oil per day in...
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2007
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08309000_v71_n3_p218_BecuVillalobos http://hdl.handle.net/20.500.12110/paper_08309000_v71_n3_p218_BecuVillalobos |
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paper:paper_08309000_v71_n3_p218_BecuVillalobos2023-06-08T15:46:14Z Effect of fat supplementation on leptin, insulin-like growth factor I, growth hormone, and insulin in cattle calcium chloride calcium salt corn oil fatty acid derivative growth hormone insulin leptin somatomedin C age distribution animal experiment animal food article body fat body weight breeding caloric intake cattle concentration response controlled study diet supplementation fat intake fat substitute female growth hormone blood level hormone metabolism lactation nonhuman sex difference Age Factors Animal Nutrition Physiology Animals Cattle Dietary Fats, Unsaturated Dietary Supplements Dose-Response Relationship, Drug Female Growth Hormone Hydrogenation Insulin Insulin-Like Growth Factor I Lactation Leptin Male Pregnancy Pregnancy, Animal Random Allocation Sex Factors Animalia Bos Zea mays We investigated the effect of fat supplementation on plasma levels of hormones related to metabolism, with special attention to leptin, in cows in early lactation and in feedlot steers. In experiment 1, 34 lactating cows received no fat or else 0.5 or 1.0 kg of partially hydrogenated oil per day in addition to their basal diet from day 20 before the expected calving date to day 70 postpartum. In experiment 2, part of the corn in the basal concentrate was replaced with 0.7 kg of the same oil such that the diets were isocaloric; 18 cows received the fat-substituted diet and 18 a control diet from day 20 before the expected calving date to day 75 postpartum. In experiment 3, calcium salts of fatty acids were added to the basal diet of 14 feedlot steers for 80 d; another 14 steers received a control diet. The basal plasma levels of leptin were higher in the cows than in the steers. Dietary fat supplementation did not affect the leptin levels in the lactating cows but lowered the levels in the feedlot steers despite greater energy intake and body fatness (body weight) in the steers receiving the supplement than in those receiving the control diet. The levels of insulin-like growth factor I and insulin were decreased with dietary fat supplementation in the lactating cows but were unaffected in the steers, suggesting that responses to fat ingestion depend on the physiological state of the animal, including age and sex. Finally, no effects of supplementary fat on the level of growth hormone were demonstrated in any of the models. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08309000_v71_n3_p218_BecuVillalobos http://hdl.handle.net/20.500.12110/paper_08309000_v71_n3_p218_BecuVillalobos |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
calcium chloride calcium salt corn oil fatty acid derivative growth hormone insulin leptin somatomedin C age distribution animal experiment animal food article body fat body weight breeding caloric intake cattle concentration response controlled study diet supplementation fat intake fat substitute female growth hormone blood level hormone metabolism lactation nonhuman sex difference Age Factors Animal Nutrition Physiology Animals Cattle Dietary Fats, Unsaturated Dietary Supplements Dose-Response Relationship, Drug Female Growth Hormone Hydrogenation Insulin Insulin-Like Growth Factor I Lactation Leptin Male Pregnancy Pregnancy, Animal Random Allocation Sex Factors Animalia Bos Zea mays |
| spellingShingle |
calcium chloride calcium salt corn oil fatty acid derivative growth hormone insulin leptin somatomedin C age distribution animal experiment animal food article body fat body weight breeding caloric intake cattle concentration response controlled study diet supplementation fat intake fat substitute female growth hormone blood level hormone metabolism lactation nonhuman sex difference Age Factors Animal Nutrition Physiology Animals Cattle Dietary Fats, Unsaturated Dietary Supplements Dose-Response Relationship, Drug Female Growth Hormone Hydrogenation Insulin Insulin-Like Growth Factor I Lactation Leptin Male Pregnancy Pregnancy, Animal Random Allocation Sex Factors Animalia Bos Zea mays Effect of fat supplementation on leptin, insulin-like growth factor I, growth hormone, and insulin in cattle |
| topic_facet |
calcium chloride calcium salt corn oil fatty acid derivative growth hormone insulin leptin somatomedin C age distribution animal experiment animal food article body fat body weight breeding caloric intake cattle concentration response controlled study diet supplementation fat intake fat substitute female growth hormone blood level hormone metabolism lactation nonhuman sex difference Age Factors Animal Nutrition Physiology Animals Cattle Dietary Fats, Unsaturated Dietary Supplements Dose-Response Relationship, Drug Female Growth Hormone Hydrogenation Insulin Insulin-Like Growth Factor I Lactation Leptin Male Pregnancy Pregnancy, Animal Random Allocation Sex Factors Animalia Bos Zea mays |
| description |
We investigated the effect of fat supplementation on plasma levels of hormones related to metabolism, with special attention to leptin, in cows in early lactation and in feedlot steers. In experiment 1, 34 lactating cows received no fat or else 0.5 or 1.0 kg of partially hydrogenated oil per day in addition to their basal diet from day 20 before the expected calving date to day 70 postpartum. In experiment 2, part of the corn in the basal concentrate was replaced with 0.7 kg of the same oil such that the diets were isocaloric; 18 cows received the fat-substituted diet and 18 a control diet from day 20 before the expected calving date to day 75 postpartum. In experiment 3, calcium salts of fatty acids were added to the basal diet of 14 feedlot steers for 80 d; another 14 steers received a control diet. The basal plasma levels of leptin were higher in the cows than in the steers. Dietary fat supplementation did not affect the leptin levels in the lactating cows but lowered the levels in the feedlot steers despite greater energy intake and body fatness (body weight) in the steers receiving the supplement than in those receiving the control diet. The levels of insulin-like growth factor I and insulin were decreased with dietary fat supplementation in the lactating cows but were unaffected in the steers, suggesting that responses to fat ingestion depend on the physiological state of the animal, including age and sex. Finally, no effects of supplementary fat on the level of growth hormone were demonstrated in any of the models. |
| title |
Effect of fat supplementation on leptin, insulin-like growth factor I, growth hormone, and insulin in cattle |
| title_short |
Effect of fat supplementation on leptin, insulin-like growth factor I, growth hormone, and insulin in cattle |
| title_full |
Effect of fat supplementation on leptin, insulin-like growth factor I, growth hormone, and insulin in cattle |
| title_fullStr |
Effect of fat supplementation on leptin, insulin-like growth factor I, growth hormone, and insulin in cattle |
| title_full_unstemmed |
Effect of fat supplementation on leptin, insulin-like growth factor I, growth hormone, and insulin in cattle |
| title_sort |
effect of fat supplementation on leptin, insulin-like growth factor i, growth hormone, and insulin in cattle |
| publishDate |
2007 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_08309000_v71_n3_p218_BecuVillalobos http://hdl.handle.net/20.500.12110/paper_08309000_v71_n3_p218_BecuVillalobos |
| _version_ |
1768545604665868288 |