Avaliação na produção e qualidade de ovos em duas gerações sucessivas de codornas de corte alimentadas com rações contendo diferentes níveis de lisina

Abstract

This study aimed to evaluate performance and egg quality in two successive generations of female broiler quails genetically improved, fed diets with increasing levels of lysine and aged between 42 and 126 days. Treatments were established in six levels with increasing percentage doses of lysine inclusion: 0,98% (T1); 1,03% (T2); 1,08% (T3); 1,13% (T4); 1,18% (T5) e 1,23% (T6). These values were distributed in a split plot design (split-plot), equivalent to the design of repeated measures in time, where each treatment showed 19 and 25 repetitions in the first and second generation. In the productive performance, egg production, feed intake, egg mass, feed per dozen eggs and per kg and body weight were evaluated. Egg quality was individually determined by weight, width and length thereof, specific gravity, height of the albumen and yolk weight, egg white and egg shell. Concerning lysine levels, no effect was statistically significant for any variables. However, there was interaction treatment*generation for bird weight, feed intake, feed conversion per dozen, egg production, egg white weight, egg length and weight, being that in two generations the lowest minimum point presented was 1.05% and the highest point of maximum 1.18%. It was observed that any of the diets used in the experiment was efficient for this line of quails, therefore the lowest lysine-level diet can be used in order to reduce feed costs.