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Further aspects on the effect of different n-3 and n-6 fatty acid sources in broiler diets
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Abstract: The motivation for this research work was to explore further effects of some different n-3 and n-6 fatty acid rich sources on broiler performance and some other related meat quality parameters, other than the frequently studied fatty acid profile of
carcass, when the polyunsaturated fatty acids (PUFA's) rich vegetable oils; linseed oil (n-3series) and sunflower oil and cottonseed oil (n-6 series), independently and simultaneously, substitute for the ideal long chain n-3 fatty acid-fish oil. Differences in oil inclusion levels were in an attempt to obtain iso-caloric-iso-nitrogenous diets, and calculations were based on that sunflower oil added at the rate of 3%, had the highest ME values. Fish oil was incorporated at the rate of 3.48% in the basal diet, and served as a control for the following seven experimental diets containing linseed oil (LO) at 3.45%, sunflower seed oil (SO) at 3.00%, cottonseed oil (CO) at 3.33%, LO+SO at 1.72+1.50%, resp., LO+CO at 1.72+ 1.66%, SO+CO at 1.5+1.66%, resp., and LO+SO+CO at 1.15+1.00+1.10%, resp%. (diets 2 up to 8). Parameters to be considered in this study were growth performance using 240 Ross broiler chicks, allocated among 8 groups, of 30 birds, each, carcass and immunity traits, also plasma, meat and bone measurements, besides some meat acceptability constituents were included in the study.
Results obtained indicate that broilers fed diets enriched with in n-6 PUFA's series, independently or simultaneously in doubles, were better than other tested forms, including the control group and the effects upon growth traits (live body weights and gains, feed intake and its conversion ratio) were significant (p<0.01) for the entire study period. Abdominal fat % varied significantly (p<0.05) between the studied groups with no clear trend towards specific PUFA's category. Sunflower oil resulted in the highest antibody production against SRBC's and humoral immunity against Newcastle disease virus (p<0.01), while fish oil was the best against avian influenza disease virus. Bone Ca and P and shear fracture energy were higher (p<0.01) in broilers fed the long chain n-3 fatty acids derived from fish oil compared to vegetable oils evaluated. Sunflower oil and fish oil, equally, had the lowest plasma and meat triglycerides values (p<0.01). But finally, while, sunflower oil alone, indicate the best meat sensory traits in terms of smile and flavour, fish oil inclusion worsened these traits (p<0.01). Consequently, when different PUFA's to be compared, the long chain n-3 PUFA's as fish oil, is recommended for better meat quality (low meat triglycerides and cholesterol) for human consumption, also for humoral immunity against avian influenza disease virus (p<0.01) and to improve bone bio-mechanics traits for broiler, and when the choice is to obtain higher weight gains, humoral immunity against Newcastle disease virus, and better sensory meat quality, the n-6 PUFA's as sunflower oil is prerequisite.
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| Publication year |
2009
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| Pages |
982-999
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| Availability location |
معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى - الجيزة
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| Availability number |
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| Organization Name |
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| City |
طابا
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| serial title |
5th International Poultry Conference
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| Author(s) from ARC |
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AGROVOC
TERMS |
Broiler chickens.
Carcass composition.
Cottonseed oil.
Fatty acids.
Fish oils.
Linseed oil.
Meat.
Performance testing.
Quality.
Sunflower oil.
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| Publication Type |
Conference/Workshop
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