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Correction of amino acid feed of broiler chicks during the brooding period
The achievement of target live weight during the first 10–14 days of brooding period is one of the key phases of broiler meat production. Of particular relevance is the solution of the problem of delay in the live weight gain in broiler chicks hatched from small-size eggs.
The conducted researches revealed comparatively lower rates of both absolute and average daily weight gain in the batch of chicks with live weight lower in the 1st day of age than the target live weight. In this regard, the cost of feed per 1 kg of live weight gain in those batches were higher by 6.2–8.4percent and accounted for 1.89–1.93 kg of feed per 1 kg of live weight.
It was revealed that one of the reasons for reduction of weight gain in brooding period was insufficient amino acids rate in the chicks’ diet, particularly the methionine amino acid, which is a decisive factor. The effectiveness of use of synthetic DL-methionine, when it is additionally introduced into the diet during the first 1–10 days of brooding period, allows for compensating the gain of target live weight by the 21stday of age with no side effects. For the purpose of compensatory weight gain during the brooding period, in experimental batches of broiler chicks hatched from small-size eggs the normal dosage of synthetic DL-methionine in the chicks’ diet was increased by 0.18 percent, which in total accounted for 0.69 percent of synthetic DL-methionine per gross weight of the feed.
The additive effect of the use of supplementary synthetic DL-methionineis characterized by an increase in average daily and absolute live weight gain, as well as in the target live weight in general, which gave an opportunity to get additional 5 260 kg of chicken meat for the amount of 105 147 UAH from experimental poultry houses with advanced technology.
The achievement of greater live body weight and chicken meat production from the experimental poultry houses with the advanced technology allowed for obtaining a net profit higher by 99444 UAH than usual, and an increase in profitability by 7.3 percent compared to that of the basic technology.
Key words: broiler chicks, amino acid feed, brooding period, live weight.
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