Effect of one-day chicks weight and pre-starter diets on broiler performance

[摘要] This research was carried out to evaluate the use of pre-starter diets, through different periods to broilers with different first day weights. Two hundred and eighty one-day old chicks were allotted in brooded battery cages, in a completely randomized design, with six treatments and four replicates in a factorial design 2 x 3, (chicks weight – higher or lower than 40 g, and pre-starter periods of feeding, 1 to 7; 1 to 10 and 1 to 14 days). The performance was not influenced by pre-starter diets periods, but the first-day weight of chicks reduced feed intake and live weight at 42 days of age. For energy and nutrient intake no effect was observed for pre-starter periods, but for the light chicks, the values of consumption were lower than heavier ones for all nutrients and energy. It is possible to conclude that chicks with less than 40 grams one-day weight influenced the reduction in feed intake and the weight gain. For the measures of the different relationship among the inside organs no differences were observed.

[学科分类] 兽医学

[关键词] /font> broilers;pre-starter rations;one-day chicks weight;performance    Introdução Os primeiros dias dos pintos de corte têm sido estudados por diferentes pesquisadores;tendo em vista seu ganho genético nos últimos anos;considerado crucial para determinar o bom desempenho do frango de corte moderno