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Macromineral concentration and technological properties of poultry meat depending on slaughter age of broiler chickens of uniform body weight

Katarzyna Połtowicz
National Research Institute of Animal Production, Department of Animal Genetics and Breeding Krakowska 1, 32-083 Balice/Cracow, Poland
Abstract :
The aim of the study was to determine the effect of slaughter age of broiler chickens on macromineral
levels of breast and leg muscles and their association with meat quality. Used were fast-growing
Hybro chickens kept on litter and fed the uniform diet. Ten chickens weighing 2 kg each were
selected for slaughter at 35, 38 and 42 day of life. Breast and leg muscles were evaluated for pH,
colour (CIELAB), water-holding capacity, drip loss, cooking loss, shear force, as well as for Na,
Ca, K, P and Mg content. The birds’ age had an effect on the Na and K content of breast muscles
and on the K, P and Mg content of leg muscles. No significant differences were found in most
physicochemical characteristics of breast meat except pH which was the lowest in the oldest birds
and cooking loss which was the highest in the youngest birds. No relationship between the level of
individual minerals and meat quality traits was identified in breast muscles. In leg muscles Mg level
correlated positively with pH
15min
and drip loss, P level with pH
15min
, and potassium level with water-
holding capacity. Breast muscles turned out to be a richer source of K, Mg and P and leg muscles
contained more Na.
Keywords :
broiler chicken / macrominerals / meat quality / slaughter age

Date Deposited : 02 Apr 2015 10:10

Last Modified : 02 Apr 2015 10:10

Official URL: http://www.ighz.edu.pl/?p0=5&p1=34

Volume 31, Number 3, - 2013

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