The Effect of Grazing on Fatty Acid Composition and Oxidative Stability of Chicken Meat

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027014%3A_____%2F16%3AN0000204" target="_blank" >RIV/00027014:_____/16:N0000204 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.vuzv.cz/sites/File/_privat/16202.pdf" target="_blank" >http://www.vuzv.cz/sites/File/_privat/16202.pdf</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

The Effect of Grazing on Fatty Acid Composition and Oxidative Stability of Chicken Meat

Popis výsledku v původním jazyce

The study evaluated the breast meat quality of Hubbard JA757 cockerels housed on litter under intensive conditions (13.5 chickens/m2; L) and in free-range with a higher (8.30 chickens/m2; FRJ) or lower stocking density (4.15 chickens/m2; FRII). The chickens of all groups were kept until 28 days of age in indoor pens, and then the free-range groups were moved to the floorless portable pens. The rapeseed oil was the source of fatty acids in diet. The rearing system had little effect on the fatty acid composition of the breast meat. The pasture of chickens with lower stocking density significantly decreased the polyunsaturated fatty acid (PUFA) content (P = 0.029) and linoleic acid content (P = 0.031) in breast meat contrary to chickens from litter. The stocking density affect the a-linolenic acid content (P < 0.001), which was significantly lower in the group with lower stocking density. In addition, both free-range groups decreased the n-3 PUFA content (P = 0.002) and the hypocholesterolemic/Hypercholesterolemic index (P < 0.001) and increased the thrombogenic index (P < 0.001) and the atherogenic index (P < 0.001). The n-6/n-3 PUFA ratio was not influenced. Oxidative stability of meat stored at 4°C for 0 (P = 0.020) and 5 days (P = 0.003) was higher in chickens housed on litter under intensive conditions. In the ninth day of storage, meat oxidative stability of chickens from FRII increased (P < 0.001) contrary to group FRI. In case of fatty acids and oxidative stability, good source of fatty acids in diet can offset or surpass the positive influence of grazing.

Název v anglickém jazyce

The Effect of Grazing on Fatty Acid Composition and Oxidative Stability of Chicken Meat

Popis výsledku anglicky

The study evaluated the breast meat quality of Hubbard JA757 cockerels housed on litter under intensive conditions (13.5 chickens/m2; L) and in free-range with a higher (8.30 chickens/m2; FRJ) or lower stocking density (4.15 chickens/m2; FRII). The chickens of all groups were kept until 28 days of age in indoor pens, and then the free-range groups were moved to the floorless portable pens. The rapeseed oil was the source of fatty acids in diet. The rearing system had little effect on the fatty acid composition of the breast meat. The pasture of chickens with lower stocking density significantly decreased the polyunsaturated fatty acid (PUFA) content (P = 0.029) and linoleic acid content (P = 0.031) in breast meat contrary to chickens from litter. The stocking density affect the a-linolenic acid content (P < 0.001), which was significantly lower in the group with lower stocking density. In addition, both free-range groups decreased the n-3 PUFA content (P = 0.002) and the hypocholesterolemic/Hypercholesterolemic index (P < 0.001) and increased the thrombogenic index (P < 0.001) and the atherogenic index (P < 0.001). The n-6/n-3 PUFA ratio was not influenced. Oxidative stability of meat stored at 4°C for 0 (P = 0.020) and 5 days (P = 0.003) was higher in chickens housed on litter under intensive conditions. In the ninth day of storage, meat oxidative stability of chickens from FRII increased (P < 0.001) contrary to group FRI. In case of fatty acids and oxidative stability, good source of fatty acids in diet can offset or surpass the positive influence of grazing.

Druh

D - Stať ve sborníku

CEP obor

GH - Výživa hospodářských zvířat

OECD FORD obor

—

Projekt

<a href="/cs/project/QJ1510192" target="_blank" >QJ1510192: Řešení problematiky vybraných faktorů růstu ve vztahu ke kvalitě masa kuřat, krůt, králíků a nutrií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Animal Physiology 2016

ISBN

978-80-7509-416-2

ISSN

—

e-ISSN

—

Počet stran výsledku

7

Strana od-do

24-30

Název nakladatele

Mendel University

Místo vydání

Brno

Místo konání akce

Bořetice

Datum konání akce

13. 6. 2016

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—