engleski

EFFECT OF FREE-CHOICE FEEDING AND FEED RESTRICTION ON THE PERFORMANCE OF FREE-RANGE ZAGORJE TURKEYS

The aim of this research was to investigate the effect of free-choice feeding and feed restriction on the performance of 302 free-range Zagorje turkeys, divided into two control (male C1 and female C2) and two experimental (male E1 and female E2) groups. First four weeks turkeys were fed a starter diet (24.2% CP) and the next four weeks grower (21.8% CP). In the following 4-month period turkeys were grazing on pastures with supplemental free-choice corn and soybean meal with vitamin-mineral premix. The level of nutrition of the experimental groups was 30% lower than in groups C1 and C2. The body weight of turkeys on the end of experiment was: C1-5853.8, C2-3391.9, E1-6010.6 and E2-3323.4 g. FCR over the whole 4-month period was 6.53, 7.50, 5.05 and 6.40. Ratio of corn: soybean meal consumed was similar, ranging from 1:0.46-1:0.48. Mortality was 3.84, 0.00, 2.56 and 3.84 %. Dressing percentage was 73.2, 70.5, 72.4 and 71.4 %.

free-choice; feeding; performance; Zagorje turkeys

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