EFFECT OF STOCKING DENSITY AND GENDER OF CHICKENS IN THE SHARE OF CERTAIN PARTS OF BODY AND KALO CUT OF FATTENING CHICKEN

The primary objective of this study was to investigate the influence of population density on clan parameters in fattening chickens of Cobb 500 hybrids. Based on theoretical and experimental studies, the influence of population density, i.e. floor surface per chicken, share of individual parts of the hull and fattening chickens. The study was carried out on 225 day-old chicks Cobb 500, which were placed in 3-square-foot boxed cubicles with five different population density. The control group (K₀) was populated in a density of 15 chickens / m² which is a technological standard, and the experimental groups K₁ , K₂ , K₃ and K₄ were populated with density of 13 chickens / m², 14 chickens / m², 16 chickens / m² and 17 chickens / m² of floor pads. When choosing chickens, it was considered that the chickens of the experimental groups were approximately the same mass. Selected chicken specimens of the same sex ratio 50:50 (ten male and ten female) are marked with rings, with the number of records attached to their legs. The rings are made of modified plastic resistant to water and high temperature, avoiding the possibility of damage to the numbers and the determination of the number of sample chickens. Nutrition and environmental conditions were the same for all chickens. For the purpose of questioning the production parameters after a completed 42-day fattening period, 10 male and 10 female chicks of each sample group were selected by the random sample method. Individual weighing of chickens determined the body mass at the end of each week, the weekly increase in body mass per group, and the final body mass. In addition, in all sample groups, mortality of chickens, consumption and food conversion was monitored. The data were analyzed by statistical program SPSS 15.0 (SPSS Inc., Chicago, IL, USA). To determine the prepared pieces of chickens, each group of 10 carcasses was taken, weighed and confined, and by weighing the determined mass of the following parts of each chicken: neck, wings, back, breasts, drumstick, thigh, pelvis and kalo cut up.