Rossi A F, Miles R D, Damron B L, Flunker L K
Department of Poultry Science, University of Florida, Gainesville 32611.
Poult Sci. 1993 Nov;72(11):2124-30. doi: 10.3382/ps.0722124.
Two experiments were conducted with a total of 432 broiler chicks to investigate the influence of supplementing different amounts of boron to practical corn-soybean meal diets. The birds were housed in batteries and had free access to feed and water. In Experiment 1, 144 1-day-old broiler chicks were fed a basal diet supplemented with 0, 5, 40, 80, or 120 ppm boron for 21 days. Female body weight was not influenced by the dietary treatments. However, males supplemented with 5 ppm boron were heavier and their tibias resisted more load than the control birds. Overall feed conversion was not influenced by boron. In Experiment 2, 288 1-day-old broiler chicks were fed a basal diet supplemented with 0, 60, 120, 240, or 300 ppm boron for 22 days. Male and female body weights of the 300-ppm group were lower than those of the control birds. Percentage tibia ash was highest with 300 ppm boron. No significant differences were found in intestinal tract weight (grams of intestine per 100 g body weight) among treatments. Boron concentration in the breast muscle and liver increased as dietary concentration of boron increased. Data collected in these two experiments indicated that consumption of diets containing up to 240 ppm boron from hatch to 21 days of age was not detrimental to broiler performance. Data were not conclusive on the need for supplemental boron in broiler diets based on corn and soybean meal.
进行了两项试验，共使用432只肉仔鸡来研究在实际玉米-豆粕型日粮中添加不同量硼的影响。这些鸡饲养在层架式鸡笼中，可自由采食和饮水。在试验1中，144只1日龄肉仔鸡被饲喂基础日粮，分别添加0、5、40、80或120 ppm硼，为期21天。日粮处理对母鸡体重没有影响。然而，添加5 ppm硼的公鸡比对照鸡更重，其胫骨能承受更大的负荷。总体饲料转化率不受硼的影响。在试验2中，288只1日龄肉仔鸡被饲喂基础日粮，分别添加0、60、120、240或300 ppm硼，为期22天。300 ppm组的公母鸡体重均低于对照鸡。300 ppm硼组的胫骨灰分百分比最高。各处理间肠道重量（每100克体重的肠道克数）无显著差异。胸肌和肝脏中的硼浓度随日粮硼浓度的增加而升高。这两项试验收集的数据表明，从出壳到21日龄采食含硼量高达240 ppm的日粮对肉仔鸡性能无害。关于以玉米和豆粕为基础的肉仔鸡日粮是否需要补充硼，数据尚无定论。
