Manipulation of the fatty acids composition of poultry meat and giblets by dietary inclusion of two oil sources and conjugated linoleic acid

Abstract

Manipulation of the fatty acids composition of poultry meat and giblets by dietary inclusion of two oil sources and conjugated linoleic acid ABSTRACTThe effect of dietary conjugated linoleic acid (CLA) in association with two vegetable oil sources on the fatty acids of meat and giblets of broiler chickens was evaluated. Two hundred 21-day-old broiler chickens were distributed in a completely randomized factorial design 2 x 5 (two oil sources, soybean or canola oil; and five levels of CLA, 0.0, 2.5, 5.0, 7.5, and 10.0g/kg). The addition of CLA to the diet resulted in an increase (P<0.05) in CLA deposition in the analyzed tissues. CLA supplementation also reduced (P<0.05) the rate of polyunsaturated to saturated fatty acids in thigh, breast, heart, and gizzard. There was interaction of CLA x oil source (P<0.05). The intake of soybean oil, associated with increasing CLA, resulted in an increase in lipid deposition in edible portions as observed by an increase in the overall content of fatty acids, including CLA, while the use of canola oil, associated with increasing CLA in the diet, resulted in a decrease in lipid content in edible portions, specifically regarding that of saturated fat (P<0.05) in breast meat and liver and in the content of monounsaturated fatty acids (P<0.05) in thigh, breast, liver, and gizzard.

The effect of pomegranate seed oil and grapeseed oil on cis‐9, trans‐11 CLA (rumenic acid), n‐3 and n‐6 fatty acids deposition in selected tissues of chickens

“…Recently, apart from beneficial role of unsaturated FA, the importance of conjugated FA (CFA), containing methylene interrupted double bonds in animal nutrition, is emphasized (Attia, Bovera et al, 2017;Badinga, Selberg, Dinges, Corner, & Miles, 2003;Zanini, Vicente, Colnago, Pessotti, & Silva, 2008). Conjugated linoleic acids (CLA) refer to a group of positional and geometric isomers of octadecadienoic acid, which are characterized by the presence of two conjugated double bonds in carbon chain.…”

Meta-análise do uso de ácido linoleico conjugado na alimentação de suínos

“…*, ** e ***Significativo a 5, 1 e 0,1% de probabilidade, respectivamente, pelo teste F. Alterações na composição corporal de animais alimentados com dietas com CLA foram descritas em suínos (Ostrowska et al, 1999;Ramsay et al, 2001;Thiel-Cooper et al, 2001;Wiegand et al, 2001;Wiegand et al, 2002;Corino et al, 2003;Ostrowska et al, 2003;Weber et al, 2006) e, também, em outras espécies como aves (Zanini et al, 2008) e peixes (Santos et al, 2007). Porém, os mecanismos bioquímicos de ação dos diferentes isômeros do CLA ainda não estão adequadamente elucidados e comprovados, e a maioria desses dados tem origem em trabalhos experimentais com camundongos ou in vitro.…”

“…Muitos trabalhos vêm sendo conduzidos com o intuito de avaliar os efeitos do CLA na composição corporal de animais de produção como aves (Zanini et al, 2008) e peixes (Santos et al, 2007). A associação do CLA com alterações metabólicas também tem sido objeto de diversas pesquisas.…”

Consequences of using rations with oxidised fats in poultry feeding

“…Tłuszcze (lipidy) w organizmach zwierząt pełnią funkcję zarówno energetyczną, jak i budulcową (strukturalną) (11,12,29,39,42,47,60,66). Tłuszcz jest komponentem wysokoenergetycznym, zawierającym około 35 MJ/kg mieszanki paszowej (19).…”

“…Tłuszcz jest bogatym źródłem wielonienasyconych kwasów tłuszczowych, w tym linolenowego i linolowego, a najwięcej ich zawierają oleje roślinne (7,8,12,49,66). Ptaki nie mają zdolności do ich syntetyzowania, a wymienione związki są konieczne do prawidłowego wzrostu i rozwoju oraz wykorzystania ich potencjału produkcyjnego (12,47).…”