Fatty acid composition of meat and perirenal fat in rabbits from two different rearing systems

To evaluate the effect of different rearing systems and sex on the fatty acid composition of rabbit meat and perirenal fat, the fat content and fatty acid composition of Longissimus lumborum and perirenal fat were determined by gas chromatography on 40 rabbits (20 males and 20 females) of the Carmag...

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Bibliographic Details
Published in:Meat science 2009-09, Vol.83 (1), p.135-139
Main Authors: Lazzaroni, Carla, Biagini, Davide, Lussiana, Carola
Format: Article
Language:English
Subjects:
animal feeding
animal handling
animal housing
backfat
Biological and medical sciences
breeds
chemical analysis
Fatty acid
fatty acid composition
Food industries
Fundamental and applied biological sciences. Psychology
Housing systems
Human health
lipid content
Meat and meat product industries
pens
public health
Rabbit
rabbit meat
rabbits
rearing
saturated fatty acids
unsaturated fatty acids
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Summary:To evaluate the effect of different rearing systems and sex on the fatty acid composition of rabbit meat and perirenal fat, the fat content and fatty acid composition of Longissimus lumborum and perirenal fat were determined by gas chromatography on 40 rabbits (20 males and 20 females) of the Carmagnola Grey breed reared from 9 to 16 weeks of age in individual California type cages (0.12 m 2) or in group ground pens (0.25 m 2/head). Ether extract percentage of muscle was significantly influenced by the housing system while, both sex and rearing method affected the fatty acid composition with a decrease in monounsaturated fatty acid (MUFA) and an increase in polyunsaturated ones (PUFA) in penned and male rabbits. The same trends were observed in the fatty acid composition of the perirenal fat, gender only had a significant affect on the saturated fatty acid (SFA) content in the perirenal fat. Indices relating to human health showed the PUFA/SFA ratio to be over the minimum recommendation for rabbits reared in pens and for males, while only the n6/n3 ratio was above the maximum recommendation for caged rabbits. Atherogenic index (AI) of perirenal fat was affected by gender, but no differences were observed in trombogenic index (TI) in either muscle or perirenal fat.
ISSN:0309-1740
1873-4138
DOI:10.1016/j.meatsci.2009.04.011