Pirarucu By-Product Acid Silage Meal in Diets for Commercial Laying Hens

ABSTRACT This study aimed to evaluate the inclusion of pirarucu by-product acid silage meal in diets for laying hens on performance and egg quality. One hundred sixty eight Hissex White laying hens 73-wk-old were distributed in completely randomized design with seven treatments (0, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0%) and four replicates of six birds each. The experiment lasted 84 days divided into four periods of 21 days. Estimates of pirarucu by-product meal levels were determined by polynomial regression. Differences (p<0.05) were observed in all variables of performance, in egg weight, yolk height and yolk pigmentation, with pirarucu by-product meal inclusion in diets showed better results than control diet. The pirarucu by-product acid silage meal can be used as alternative food in diets for commercial laying hens. Up to the 2.5% inclusion level there wasn’t negative effect in performance and egg quality.

摘要 本研究旨在评估日粮中添加巨骨舌鱼（pirarucu）副产物酸化青贮粉对产蛋鸡生产性能与蛋品质的影响。选取168只73周龄的海赛克斯白壳产蛋鸡，采用完全随机试验设计，设置7个添加梯度组（0、0.5、1.0、1.5、2.0、2.5及3.0%），每组设4个重复，每个重复6只试验鸡。试验周期共计84天，划分为4个21天的试验阶段。通过多项式回归分析确定巨骨舌鱼副产物粉的适宜添加水平。各组在生产性能各项指标、蛋重、蛋黄高度及蛋黄着色度上均存在显著差异（p<0.05）；添加巨骨舌鱼副产物粉的试验组性能均优于对照组日粮。巨骨舌鱼副产物酸化青贮粉可作为商品产蛋鸡日粮的替代饲料原料。当添加水平不超过2.5%时，对产蛋鸡的生产性能与蛋品质均无不良影响。