Sell D R, Rogler J C, Featherston W R
Poult Sci. 1983 Dec;62(12):2420-8. doi: 10.3382/ps.0622420.
A study was conducted to investigate the effect of sorghum grain tannins on the performance of laying hens. A total of 144 White Leghorn hens were arrayed according to egg production during a 10-day preexperimental period into eight groups consisting of four nutritional treatments in each of two constant temperature environments (22 and 28 C). The nutritional treatments consisted of low (RS610) and high (Savanna) tannin sorghum grains compared isonitrogenously within a protein level at two protein levels (11.5 and 14.5%) in sorghum-soybean meal diets. These diets were fed for an experimental period of 6 weeks. Egg production and feed efficiency were reduced and weight loss was increased by 11.5% protein as compared with 14.5% protein. Tannin significantly reduced egg production and feed efficiency at both protein levels while egg specific gravity and shell thickness were adversely affected only at the lower level of protein. Egg weight and weight loss of hens were not affected by tannin. Except for weight loss, all parameters were slightly reduced by the higher temperature. At the end of the experiment, all hens were placed on a commercial laying ration for a 31-day period. Recovery from the treatment effects was evidenced by the similar egg production, body weight, egg weight, and shell characteristics among the previous treatments at the end of this period.
进行了一项研究，以调查高粱籽粒单宁对蛋鸡生产性能的影响。在10天的预试验期内，根据产蛋量将总共144只白来航蛋鸡分为8组，在两个恒温环境（22℃和28℃）中，每组有四种营养处理。营养处理包括在高粱-豆粕日粮中，在两个蛋白质水平（11.5%和14.5%）下，等氮比较低（RS610）和高（萨凡纳）单宁高粱籽粒。这些日粮饲喂6周的试验期。与14.5%蛋白质相比，11.5%蛋白质水平下的产蛋量和饲料效率降低，体重损失增加。单宁在两个蛋白质水平下均显著降低产蛋量和饲料效率，而蛋的比重和蛋壳厚度仅在较低蛋白质水平下受到不利影响。蛋重和母鸡体重损失不受单宁影响。除体重损失外，所有参数均因较高温度而略有降低。在试验结束时，所有母鸡改为饲喂商业产蛋日粮31天。在此期间结束时，之前处理组之间的产蛋量、体重、蛋重和蛋壳特性相似，证明了从处理影响中恢复过来。
