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Effects of calcium salts of long-chain fatty acids and rumen-protected methionine on plasma concentrations of ghrelin, glucagon-like peptide-1 (7 to 36) amide and pancreatic hormones in lactating cows.
- Source :
-
Domestic animal endocrinology [Domest Anim Endocrinol] 2012 Feb; Vol. 42 (2), pp. 74-82. Date of Electronic Publication: 2011 Oct 20. - Publication Year :
- 2012
-
Abstract
- Our objective was to determine the effects of calcium salts of long-chain fatty acids (CLFAs) and rumen-protected methionine (RPM) on plasma concentrations of ghrelin, glucagon-like peptide-1 (7 to 36) amide, and pancreatic hormones in lactating cows. Four Holstein cows in midlactation were used in a 4 by 4 Latin square experiment in each 2-wk period. Cows were fed corn silage-based diets with supplements of CLFAs (1.5% added on dry matter basis), RPM (20 g/d), CLFAs plus RPM, and without supplement. Jugular blood samples were taken from 1 h before to 2 h after morning feeding at 10-min intervals on day 12 of each period. CLFAs decreased dry matter intake, but RPM did not affect dry matter intake. Both supplements of CLFAs and RPM did not affect metabolizable energy intake and milk yield and composition. Plasma concentrations of NEFAs, triglyceride (TG), and total cholesterol (T-Cho) were increased with CLFAs alone, but increases of plasma concentrations of TG and T-Cho were moderated by CLFAs plus RPM. Calcium salts of long-chain fatty acids increased plasma ghrelin concentration, and the ghrelin concentration with CLFAs plus RPM was the highest among the treatments. Plasma concentrations of glucagon-like peptide-1, glucagon, and insulin were decreased with CLFAs, whereas adding RPM moderated the decrease of plasma glucagon concentration by CLFAs. These results indicate that the addition of methionine to cows given CLFAs increases plasma concentrations of ghrelin and glucagon associated with the decrease in plasma concentrations of TG and T-Cho.<br /> (Copyright © 2012 Elsevier Inc. All rights reserved.)
- Subjects :
- Animals
Cholesterol blood
Dietary Supplements
Fatty Acids, Nonesterified blood
Female
Lactation drug effects
Least-Squares Analysis
Milk chemistry
Milk metabolism
Triglycerides blood
Calcium administration & dosage
Cattle metabolism
Fatty Acids administration & dosage
Ghrelin blood
Glucagon-Like Peptide 1 blood
Methionine administration & dosage
Peptide Fragments blood
Subjects
Details
- Language :
- English
- ISSN :
- 1879-0054
- Volume :
- 42
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Domestic animal endocrinology
- Publication Type :
- Academic Journal
- Accession number :
- 22056209
- Full Text :
- https://doi.org/10.1016/j.domaniend.2011.09.005