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首页> 外文期刊>Revista Brasileira de Ciência Avícola >BEAK TRIMMING BY INFRARED RADIATION OF LAYERS
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BEAK TRIMMING BY INFRARED RADIATION OF LAYERS

机译：通过红外辐射对页面进行修剪

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This study aimed at evaluating beak-trimming methods and intensities on the performance, beak length and uniformity, and egg parameters of commercial layers. During the rearing period, birds were distributed in randomized blocks, with a 2x3 factorial design + two treatments, consisting of beak trimming with infrared (IR) radiation (moderate or severe); three IR intensities (low: 42 nm, intermediate: 46 nm, or high: 52 nm); and two control hot blade (HB) beak trimming treatments (moderate or severe) with eight treatments and five replicates of 21 chicks each, totaling 840 birds. During the growing phase (second experiment) the factorial design was modified to 2 x 3 x 2 + 4, comprising two IR beak-trimming intensities (moderate or severe); three IR radiation intensities (low, moderate and high), second beak trimming at 11 weeks of age or not, and four additional HB beak-trimming treatments (moderate or severe) beak-trimming intensities, and second beak trimming at 11 weeks of age or not. There were 16 treatments with six replicates of seven birds each, totaling 672 laying hens, out of which 576 were selected for evaluation during the production period, with the same number of treatments and replicates of the previous phase. Weight gain (g), body weight (g), body weight uniformity (%), beak length (mm) and uniformity (%), absence of cannibalism (%), livability (%), egg production (%), feed intake (g), feed conversion per eggmass, eggmass, specific gravity, eggshell strength, Haugh unit, % yolk were evaluated. Beak trimming by infra-red radiation may be employed in commercial laying hens.
机译：这项研究旨在评估喙修剪方法和强度对商业蛋鸡的性能，喙长度和均匀度以及蛋参数的影响。在饲养期间，将家禽按2x3因子设计+两种处理方法随机分成几组，其中包括用红外线（中度或重度）修剪喙。三个IR强度（低：42 nm，中间：46 nm或高：52 nm）;以及两个对照热刀片（HB）喙修整处理（中度或重度），分别进行八次处理和五次重复，每只重复21只鸡，共840只。在生长阶段（第二个实验），阶乘设计修改为2 x 3 x 2 + 4，包括两个IR喙修剪强度（中等或严重）;三种IR辐射强度（低，中和高），是否在11周龄时进行第二次喙修整，以及另外四种HB喙修整方法（中度或重度）喙修整强度，以及在11周龄时进行第二次喙修整或不。一共有16种处理方法，每组有六只重复，每组七只鸡，总共672只蛋鸡，在生产期间选择了576羽母鸡进行评估，其处理和重复的数量与上一阶段相同。体重增加（g），体重（g），体重均匀度（％），喙长（mm）和均匀度（％），不存在同类相食（％），宜居性（％），产蛋量（％），采食量（g），评估每个蛋质量的饲料转化率，蛋质量，比重，蛋壳强度，霍夫单位，蛋黄％。通过红外线辐射进行的喙修整可用于商业蛋鸡。

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