Document Detail


Effect of fat supplementation during transition period on plasma leptin and non-esterified fatty acid concentrations in Holstein cows.
MedLine Citation:
PMID:  20597887     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The objective of this experiment was to investigate the effect of fat supplementation during the transition period on pre and postpartum body weight (BW), body condition score (BCS), non-esterified fatty acids (NEFA), glucose and leptin concentrations in Holstein cows. Holstein cows (n = 15) received a low fat diet (LF; 1.61 Mcal net energy for lactation (NEL)/kg of dry matter [DM]), moderate fat diet (MF; 1.68 Mcal NEL/kg DM) or a high fat diet (HF; 1.74 Mcal NEL/kg DM) for 4 weeks prior to calving. All cows were fed similar lactation diets ad libitum (1.74 Mcal NEL/kg DM) for 30 days after calving. Increasing diet energy density during transition period had no effect on prepartum DMI, BCS, BW, glucose and NEFA concentrations (P > 0.05); but leptin concentrations and energy balance (EB) were affected by treatments (P < 0.05). Animals fed HF had less plasma leptin prepartum. After parturition, BW, milk production, milk fat, protein, urea nitrogen and plasma glucose concentrations were affected by prepartum diets (P < 0.05). Fat supplementation prepartum did not affect postpartum NEFA. In conclusion, prepartum fat supplementation decreased leptin concentration prepartum.
Authors:
Ahmad Afzalzadeh; Mohammad Hossein Palizdar; Homayoun Mahmoudzadeh; Amir Niasari-Naslaji
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Animal science journal = Nihon chikusan Gakkaihō     Volume:  81     ISSN:  1740-0929     ISO Abbreviation:  Anim. Sci. J.     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-07-05     Completed Date:  2010-12-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100956805     Medline TA:  Anim Sci J     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  309-15     Citation Subset:  IM    
Affiliation:
Department of Animal Science, University of Tehran, Abureihan Pardis, Tehran.
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MeSH Terms
Descriptor/Qualifier:
Animal Feed
Animals
Cattle / blood,  metabolism*
Dietary Fats / metabolism*
Fatty Acids, Nonesterified / blood*
Female
Lactation / metabolism
Leptin / blood*
Postpartum Period / metabolism
Chemical
Reg. No./Substance:
0/Dietary Fats; 0/Fatty Acids, Nonesterified; 0/Leptin

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