Dietary marine algae and its influence on tissue gene network expression during milk fat depression in dairy ewes

Abstract:

Supplementation of a linoleic acid-rich diet with marine algae reduces milk fat content while impacting milk fatty acid profile in dairy sheep. Unlike other ruminant species, in ovine there are limited data on the molecular mechanisms that may regulate adipose, liver, and mammary responses to dietary marine lipids. This study was conducted to investigate changes in mRNA expression and relative mRNA abundance of key enzymes involved in lipid metabolism in mammary, subcutaneous adipose and liver tissue in response to long-term milk fat depression induced by marine algae. Eleven Assaf ewes were randomly assigned to 2 experimental diets consisting of a TMR based on alfalfa hay and concentrate (40:60) supplemented with 25 g of sunflower oil/kg DM plus 0 (SO; control diet) or 8 g of marine algae/kg of DM (SOMA diet) for 54 d. Quantitative reverse transcription-PCR was used to study expression of target …

Año de publicación:

2013

Keywords:

Fuente:

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