The physical form of feed affects the feed consumption and growth rate of broilers. A 42-D experiment was conducted to determine the effects of broiler starter feed form on the growth performance of broilers. A total of nine hundred 1-day-old Cobb 500 male broiler chicks with an average initial BW of 38 g were randomly distributed into 36-floor pens with 25 birds per pen. Pens were randomly assigned to 1 of 4 dietary treatments within a location block to provide 9 pens per treatment. Birds were fed the dietary treatments during the starter phase from day 1 to 21 followed by a common mash diet from day 22 to 42. Dietary treatments were made up of 1) 21 D mash (M); 2) 7 D crumbles followed by 14 D mash (7C); 3) 14 D crumbles followed by 7 D mash (14C), and 4) 21 D crumbles (21C). Overall the BW, average daily gain (ADG), and average daily feed intake (ADFI) were increased (P < 0.001) for the birds fed crumbles compared with those fed the mash diet. Feed conversion ratio (FCR) was improved (P < 0.001) for the birds fed crumbles compared with those fed the mash diet. Birds fed 21C were heavier at 21 D and 42 D and had improved (P < 0.001) FCR compared with those fed the other diets. The results of the study suggest that feeding broiler chicks crumbles as opposed to mash diet for a minimum of 7 D improved BW, ADG, ADFI, and FCR.

饲料的物理形式会影响肉鸡的饲料消耗和生长速度。进行了42天实验，以确定肉鸡起子饲料形式对肉鸡生长性能的影响。将总共​​900只1日龄的Cobb 500雄性雏鸡平均初始初始体重为38 g，随机分配到36层围栏中，每只围栏25只。将笔随机分配到一个位置块中的4种饮食疗法中的1种，每次处理提供9支。在开始阶段从第1天到第21天为鸟类喂食饮食处理，然后从第22天到第42天喂以普通的糊饮食。饮食处理由1）21 D mash糊（M）组成；2）7 D碎屑，然后是14 D捣碎（7C）；3）14 D碎屑，然后7 D捣碎（14C）和4）21 D碎裂（21C）。与饲喂饲料 的禽相比，饲喂粉碎的禽的总体重，平均日增重（ADG）和平均日采食量（ADFI）增加（P <0.001）。与饲喂饲料 的鸡相比，饲喂粉碎的鸡的饲料转化率（FCR）提高了（P <0.001）。饲喂21C的家禽在21天和42天较重， 与其他饲喂的家禽相比，FCR有所改善（P <0.001）。研究结果表明，饲喂肉仔鸡比粉碎饲料要粉碎至少7天，可改善BW，ADG，ADFI和FCR。