Anotace:
In this work we aimed to analyse the effect of different levels of Musculaton® with selected amino acids and herbal extracts on performance and carcass characteristics of broiler chickens. A total 240 one-day-old broiler chickens Ross 308 of mixed sex were divided into four experimental groups (n = 60): a control and three experimental groups with addition of Musculaton® in levels 0.75%, 1.00% and 1.25% in drinking water from 22 to 35 day of fattening. In nutrition, we used commercial feed mixtures, water and feed was provided ad libitum throughout the experimental period of 42 days. The body weights of all birds were recorded individually at weekly interval from 1 to 42 day. Total feed consumption and total mortality were determined to 42 day of fattening period. Carcass characteristics were detected at the end of the experiment. The addition of different levels of Musculaton® significantly increased (p <0.05) the live weight of broilers from 28 to 42 days of age compared with control. In the whole trial period, feed consumption and mortality were no affected by addition of Musculaton® to drinking water compared control group. As regards carcass parameters, the addition Musculaton® in drinking water significantly decreased (p <0.05) abdominal fat weight and significantly increased (p <0.05) breast proportion. Carcass yield and thigh proportion were not affected (p >0.05) by the application of Musculaton®. The liver, pancreas, kidney and small intestine proportions were significantly higher (p <0.05) in chickens supplemented by Musculaton®. In case of neck, crop, heart, proventriculus, gizzard, caecum and large intestine weights among control and experimental groups we observed no statistically significant differences (p >0.05).