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

Result code in 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>

Result on the web

<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

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

GH - Nutrition of farm animals

OECD FORD branch

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Project

<a href="/en/project/QJ1510192" target="_blank" >QJ1510192: Solution of problems of selected factors of growth in relationship to meat quality in chickens, turkeys, rabbits and nutrias</a><br>

Continuities

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

Publication year

2016

Confidentiality

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

Article name in the collection

Animal Physiology 2016

ISBN

978-80-7509-416-2

ISSN

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e-ISSN

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Number of pages

7

Pages from-to

24-30

Publisher name

Mendel University

Place of publication

Brno

Event location

Bořetice

Event date

Jun 13, 2016

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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