Dietary Polyunsaturated Fat Reduces Skin Fat as Well as Abdominal Fat in Broiler Chickens
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Fecha de publicación
2008-03-01ISSN
0032-5791
Resumen
The aim of this study was to determine the
effect of different dietary fatty acid profiles on the main
fat depots of broiler chickens: skin including s.c. fat (SK)
and abdominal fat pad (AF). One hundred forty-four female broiler chickens were fed a low-fat diet (B; 0.5% of
added fat) or diets supplemented with 10% of tallow (T),
sunflower oil rich in oleic acid (SOO), sunflower oil rich
in linoleic acid (SOL), linseed oil rich in linolenic acid
(LO), or a mix of fats (M: 55% of T + 35% of LO + 10% SOL)
that contained one-third each of saturated fatty acids,
monounsaturated fatty acids, and polyunsaturated fatty
acids. The animals were housed in 36 cages and were
randomly distributed into 6 dietary treatments with 6
replicates each. Experimental diets were evaluated for
apparent total fatty acid availability and AME. On d 42,
birds were slaughtered to determine the weight of AF and SK and fatty acid profile. Regarding the diets containing 10% added fat, the highest saturated diet (T) resulted in the lowest values of apparent total fatty acid
availability and percentage of AME. Animals fed the most
polyunsaturated diet (LO) had a lower SK deposition
than those fed the saturated diet, on both an absolute
(LO: 145 vs. T: 159 and M: 168 g; P < 0.001) and a relative
basis (LO: 6.94 vs. T: 7.39 and M: 7.52 g/100 g of BW; P
< 0.001). Furthermore, the lowest AF depot was observed
in the LO diet (LO: 26.3 g vs. T: 37.6 and M: 39.9 g; P <
0.001). The added fat treatments caused significant but
similar changes in fatty acid profile of both studied tissues. In conclusion, feeding broiler chickens polyunsaturated fatty acids, in comparison to dietary saturated fatty
acids, reduced the amount of both AF and SK by approximately 30 and 9%, respectively.
Tipo de documento
Artículo
Versión del documento
Versión publicada
Lengua
English
Materias (CDU)
636 - Explotación y cría de animales. Cría del ganado y de animales domésticos
Páginas
8
Publicado por
Elsevier
Publicado en
Poultry Science
Citación
Ferrini, G., M.D. Baucells, E. Esteve-García, and A.C. Barroeta. 2008. “Dietary Polyunsaturated Fat Reduces Skin Fat as Well as Abdominal Fat in Broiler Chickens.” Poultry Science 87 (3): 528–535. doi: 10.3382/ps.2007-00234
Program
Nutrició Animal
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