Sources and effects of different levels of oil on production performance and broilers carcass quality

Abstract

This paper investigates the effect of soybean oil, flax and rapeseed on production parameters and broilers carcass quality. At the beginning of fattening six groups of 40 one-day-old chick's hybrid Ross 308 were formed, with five replications. The control group was based on two levels of soybean oil, 4% and 8% and in the experimental groups were included 4% and 8% flax, or 4% and 8% rapeseed oil. Experiment lasted for 42 days. At the end of fattening period, 10 chickens from each group were sacrificed for the purpose of testing carcass quality. Including various types of oils in the diet did not result in statistically significant differences in body weight of chickens. At the end of the experiment, the control has achieved a body mass of 2704.0 g and 2695.0 g, experimental group with flax oil 2734.0 g and 2671.0 g and with rapeseed 2735.0 g and 2670.0 g. Feed conversion was the lowest in groups with rapeseed oil and the highest in groups with flaxseed oil. The difference in the carcass quality of control and experimental groups were not significant. The highest amount of abdominal fat (31,9g) was in the group with addition of 8% flax oil, and the lowest in the group with soy bean oil in same amount (22g) Treatments with 4% of oil, have almost the same amount of abdominal fat.