Document Detail

Relationship between hair fatty acid profile, reproduction and milk performance in Holstein Friesian cows.
MedLine Citation:
PMID:  23345552     Owner:  NLM     Status:  Publisher    
The aim of this study was to analyze the relationship between the fatty acid profiles of hair of first parity cows, their reproduction and milk performance. Hair samples from forty-six German Holstein cows, 50 to 62 days post partum, were analyzed to assess the relationship. All cows were fed the same diet. The lipid composition of hair was determined by gas chromatography. The fat content in the hair was 0.86 %. Hair lipids contributed 75.14 % SFA, 15.81 % MUFA and 9.92 % PUFA. Cows were classified into a high and a low performance group according to their a) length of the interval from calving to first insemination (CFI), b) 100-day protein yield (100-day PY) and c) length of the interval from calving to conception (CC) and 100-day PY. Cows with short CFI or high 100-day PY or short CC and high 100-day PY had significantly higher proportions of de novo synthesized C12:0 (P < 0.05) compared with the corresponding low performing groups. Increased proportions of C12:0 in the hair were associated with shorter CFI (r = - 0.32, P = 0.033) and higher 100-day PY (r = 0.34, P = 0.021). Furthermore, a discriminant analysis with C12:0 as a variable best predicted short CC and high 100-day PY (error rate 33.5%). Higher proportions of de novo synthesized fatty acids in the hair, in particular C12:0, likely reflect a sufficient energy availability that is required for fatty acid synthesis in ruminants.
R Moeller; K Nuernberg; A O Schmitt; G A Brockmann
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-23
Journal Detail:
Title:  Journal of animal science     Volume:  -     ISSN:  1525-3163     ISO Abbreviation:  J. Anim. Sci.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8003002     Medline TA:  J Anim Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department for Crop and Animal Sciences, Humboldt-Universität zu Berlin, Invalidenstraße 42, 10115 Berlin, Germany.
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