摘要
This study was done to determine the best value of the total electrolyte balance (BET) concerning the variables of performance and egg quality of the laying hens. We investigated 240 Hy-Line Brown laying hens, of 30 to 46 weeks of age, adopting the completely randomized experimental design, which included five treatments (1000, 1250, 1500, 1750 and 2000 μeq / kg), 8 repetitions and 6 birds per unit. The performance and quality of the birds’ eggs were evaluated in the different treatments. The results were subjected to the analysis of variance and, wherever significant effect was noted, the regression equations were estimated, taking into account the electrolyte balance (μeq / kg) as a concomitant variable, applying the SAS statistical program (2001). The consumption, production, and feed conversion variables by dozen eggs, final bird weight, egg density, yolk color, Haugh Unit, albumen weight, shell weight, and egg weight, were found to be unaffected by the experimental BET values. The values of the feed conversion per egg mass, yolk weight and uniformity were affected by the different BETs. The electrolyte balance values showing minimum feed conversion, higher yolk weight, and better uniformity were, respectively, BET = 1400, 1330, and 1250 in μeq / kg of loads at the different temperatures. From the regression equations, the value indicated was BET=1390 for the 30- to 46-week-old laying hens. The electrolyte balance of the diet was found to affect the laying hens in terms of performance and egg quality.
摘要译文
这项研究是为了确定与蛋鸡生产性能和蛋品质有关的总电解质平衡（BET）的最佳值。我们采用完全随机的实验设计，调查了240只30-46周龄的Hy-Line Brown蛋鸡，包括五种处理方法（1000、1250、1500、1750和2000μeq/ kg），8次重复和每只6羽鸡单元。在不同的处理中评估了禽蛋的性能和质量。对结果进行方差分析，并在注意到显着影响的情况下，使用SAS统计程序（2001），以电解质平衡（μeq/ kg）作为伴随变量，估算回归方程。发现十二打蛋的食用，生产和饲料转化变量，最终禽的体重，蛋的密度，蛋黄颜色，哈氏单位，蛋白重量，壳重和蛋重不受实验BET值的影响。每蛋质量，蛋黄重量和均匀度的饲料转化率值受不同BET的影响。在不同温度下，以μeq/ kg负载表示的最小进料转化率，更高的蛋黄重量和更好的均匀性的电解质平衡值分别为BET = 1400、1330和1250。根据回归方程式，对于30到46周龄的蛋鸡而言，显示的值是BET = 1390。发现饮食中的电解质平衡会影响蛋鸡的生产性能和蛋品质。