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Efektivita produkce brojlerových kuřat v závislosti na délce výkrmu a na ročním období
Galata, Jan
The efficiency of broiler chickens for fattening depends, among other things, on the length of fattening and utilization of the genetic potential of fast-growing broiler chickens. The aim of the diploma thesis was to evaluate the influence of the farm on the utility parameters during their internal classification according to the length of fattening in the Light or Heavy segment and to compare the utility of both segments with each other. Another aim was to evaluate the effect of the season on the utility parameters of chickens. Two farms in the Light segment and three in the Heavy segment were included in the monitoring. Age for distribution into these segments was determined to be 36 days. Performance parameters included: day 7 weight, slaughter age, slaughter weight, convert, 1.5 kg weight conversion, mortality, daily weight gain and IEV. In the evaluation of the effect of the annual period, 178 turnuses from fattening in the years 2021–2023 were included in the observation. In the Light segment assessment, the farm had a conclusive effect on slaughter weight, feed conversion at the end of fattening weight at 1.5 kg, daily gain and IEV (P < 0.05). Conversely, in the Heavy segment, there was no evidence of a difference in feed conversion between farms, neither in the weight of 1.5 kg nor in slaughter weight. When the segments were evaluated, IEV was significantly lower (P < 0.05) for the Heavy segment. The best daily weight gains and IEV reached chickens fattened in the autumn (P < 0.05).
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