The objective of this study was to evaluate the effect of graded inclusion of almond hulls on growth performance, body composition, digestive tract weight, and liver antioxidant capacity of broilers. A total of 420 one-day-old Cobb male chicks was randomly allocated to 5 experimental treatments with 6 replicates of 14 birds each for 19 d of age. The five dietary treatments consisted of a corn-soybean meal control diet and 4 almond hull treatments containing 2.5, 5, 7.5, and 10% of almond hulls with 97.5, 95, 92.5, and 90% of the control diet, respectively. Feeding almond hulls at 10% reduced broiler body weight gain (P ≤ 0.048) and increased feed conversion ratio (FCR; P < 0.01) at 0 to 7 and 0 to 14 d compared to the control group. Inclusion of almond hulls showed a quadratic effect (P = 0.044) on body weight gain and linear effect (P = 0.045) on FCR during 0 to 19 d of age. The numerically highest body weight gain was achieved when broilers were fed the diet containing 5% of almond hulls at 19 d of age. As the almond hull inclusion level increased, a linear (P = 0.035) effect was observed on the relative whole intestine weight, whereas a quadratic (P = 0.086) trend was observed on the relative gizzard weight at 19 d of age. Inclusion of almond hulls showed a quadratic (P ≤ 0.011) effect on broiler body fat weight and fat percentage. Broilers fed the diet containing almond hulls at 5% had a lower body fat weight (P = 0.011) and fat percentage (P < 0.01) compared to the control group. Inclusion of almond hulls also showed a quadratic (P = 0.075) trend on broiler body mineral content. Hepatic superoxidative dismutase linearly (P < 0.01) increased as the level of almond hulls in the diet increased. In summary, inclusion of almond hull showed a beneficial effect on intestinal development and liver antioxidant capacity. Moreover, broilers fed the diet containing 5% almond hull showed an optimum body weight gain with lower body fat weight and fat percentage, whereas inclusion of up to 7.5% of almond hulls did not show any negative effects on growth performance.

这项研究的目的是评估杏仁壳分级包含对肉鸡生长性能，身体成分，消化道重量和肝脏抗氧化能力的影响。将总共​​420只1日龄的Cobb雄性小鸡随机分配到5个实验处理组，每组19 d的6个重复实验，每组14只。这五种饮食处理包括玉米豆粕对照饮食和四种杏仁壳处理，分别包含2.5％，5％，7.5％和10％的杏仁壳，分别占对照饮食的97.5％，95％，92.5％和90％。在10％的进料杏仁壳减小的肉鸡体重增益（P  ≤0.048）和增加的饲料转化率（FCR ; P 与对照组相比，在0至7天和0至14天时<0.01）。 在0至19 d的年龄中，杏仁壳的加入 对体重增加表现出二次效应（P = 0.044），对FCR表现出线性效应（P = 0.045）。当在19 d龄时给肉鸡饲喂含有5％杏仁壳的饲料时，体重增加达到了数字上的最高值。随着杏仁壳包涵体含量的增加， 在19 d龄时 相对于整个肠的重量观察到线性（P = 0.035）效果，而相对izz的观察到了二次（P = 0.086）趋势。杏仁壳的夹杂物呈二次方（P ≤0.011）对肉鸡体内脂肪重量和脂肪百分比的影响。 与对照组相比，饲喂含5％杏仁壳饲料的肉鸡的体脂重量（P  = 0.011）和脂肪百分比（P <0.01）更低。包含杏仁壳还显示 肉鸡体内矿物质含量呈二次方（P = 0.075）趋势。肝超氧化物歧化酶呈线性（P <0.01）随着日粮中杏仁壳含量的增加而增加。总之，包含杏仁壳对肠道发育和肝脏抗氧化能力具有有益作用。此外，饲喂含5％杏仁壳的日粮的肉鸡显示出最佳的体重增加，而脂肪含量和脂肪百分比降低，而包含高达7.5％的杏仁壳对生长性能没有任何负面影响。