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Slaughterhouse quality of chicken from organic and conventional system

The research was conducted on carcasses and meat of 16 chicken birds of the Croatian indigenous breed hrvatica (dudica), both from organic and conventional fattening (deep litter). Chickens from both of the analyzed groups were fattened until the age of 98 days. The chickens from the organic group were fattened in accoridance with the Regulations on organic production of animal products (Official Gazette 13/02.). The average finishing live body weight of the chickens from organic fattening was 0.765 kg, and from conventional fattening it was 0.890 kg. The average slaughter weight mass was 0.530 kg and 0.590 kg respectively. Carcasses from organic fattening, compared to those from conventional fattening, had a significantly (p<0.05) higher share of breast (18.52 % : 17.00 %). Considering the share of drumstick (12.62 % : 12.80 %) and thigh (12.46 % : 13.18 %) no significant differences were found (p>0.05) between the analyzed groups. Chicken meat from organic system, compared to those from conventional system, had a significantly (p<0.05) better water-holding capacity (4.30 cm2 : 5.15 cm2), a very significantly (p<0.01) lower L* for colour (62.00 : 63.90), very significantly (p<0.01) higher a* and b* values (12.00 : 9.29 and 20.00 : 17.00) and a very significantly (p<0.01) better consistency (2.20 cm2 : 2.50 cm2). In terms of pH1 value (6.30 : 6.25) and pH2 value (5.80 : 5.75) no significant differences were found (p>0.05) between the analysed groups. Chicken meat from organic system, compared to the one from conventional system, had a very significantly (p<0.01) higher crude protein content (24.30 % : 23.25 %), as well as a very significantly (p<0.01) lower fat content (0.75 % : 1.55 %) and ashes content (1.15 % : 1.20 %).

slaughter quality of chicken ; organic system ; conventional system

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