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Effect of light programme and bird strain upon carcase and meat quality in broiler chickens

100%

Garnowicz E., Lewko L.

Polish Journal of Food and Nutrition Sciences

2007

tom 57

nr 4[A]

181-186

The purpose of this study was to evaluatethe effect of the kind of light programme on slaughter and meat yield, as well as on physicochemical and sensory traits of breast and leg muscles in Ross 308 and Hybro G commercial hybrids of broiler chickens. The results of study indicated that the intermittent light programme 4L:2D or 3L:1D used in growing broiler chickens significantly affected the following traits in the examined strains of broilers: increased slaughter yield by circa 2.0%; higher yield of breast muscles by about 1.29%; of leg muscles by about 1.44% and lower amount of peritoneal fat tissue in the carcase by about 1.39%. The applied light system also improved the physicochemical characteristics of meat, i.e. pH15, pH24 and water holding capacity and decreased the intramuscular fat content. The kind of light programme affected the quality traits of carcase and meat both in Ross 308 and Hybro G strains of broiler chicken.

Effects of air temperature in the final growing period and of bird strain on carcass and meat quality in broiler chickens

100%

Gornowicz E., Lewko L., Gornowicz J.

Polish Journal of Food and Nutrition Sciences

2007

tom 57

nr 4[A]

175-179

The purpose of study was to compare the effects of lower and higher (by ±3°C) air temperature in the poultry house in the period from 28 to 42 days of the growing period with the standard (medium) air temperature conditions in Ross 308 and Hybro G commercial broilers chickens, taking into consideration the main performance traits of birds and quality of carcase and meat. The experimental findings demonstrated that increasing or decreasing standard air temperature in the poultry house by ±3°C significantly deteriorated the examined performance traits. A higher negative effect on the physicochemical traits of muscles was noted in the case of higher air temperature. It pertained mainly to the degree of muscle acidification post mortem and intramuscular fat content. The studied ambient air temperatures influenced to the same degree the economic effectiveness of bird growing and quality of carcase and meat in the two examined strains of broiler chickens.

Ograniczanie wyników

2 Polish Journal of Food and Nutrition Sciences

2 Lewko L.

1 Garnowicz E.

1 Gornowicz E.

1 Gornowicz J.

2 2007

Wyniki wyszukiwania

Effect of light programme and bird strain upon carcase and meat quality in broiler chickens

Effects of air temperature in the final growing period and of bird strain on carcass and meat quality in broiler chickens