Shivazad M, Bejaei M, Taherkhani R, Zaghari M, Kiaei M M
Department of Animal Science, Faculty of Agriculture, University of Tehran, Karaj, Iran.
Pak J Biol Sci. 2007 Jun 1;10(11):1860-4. doi: 10.3923/pjbs.2007.1860.1864.
An experiment was conducted to investigate the effects of glucose injection and feeding Oasis immediately posthatch on the subsequent performance of broilers. Experiment was carried out using a completely randomized design with factorial arrangement (2 x 2 x 2 x 2). Factors were included egg weight (small eggs weighting between 50 to 60 g and medium eggs weighting between 61 to 70 g), glucose injection (Control with no injection and 0.3 mL glucose injection), feeding in transportation boxes during shipping period (chicks fed Oasis and those hold with no access to feed and water) and house arrival feeding (chicks that receive feed immediately at arrival and those hold for an additional 12 h without feed). Treatments were replicated three times with 25 chicks per each. Live weight and feed intake were measured for each experimental unit at 7, 21 and 42 days of age and then weight gain and feed: gain was calculated. On days 3, 21 and 42, two chicks from each replicate were killed for carcass analysis including yolk sac residue weight (third day), duodenum, jejunum and ileum weight and length and also liver and gizzard weight. Results show an improved Weight Gain (WG) and feed efficiency (p < 0.05) in chicks from medium eggs compared to those from small eggs. A significant interaction (p < 0.05) between glucose injection and egg weight was observed, so that chicks of small eggs with glucose injection show a significant (p < 0.05) depression in WG. Chicks with immediate access to Oasis had greater (p < 0.05) duodenum and jejunum relative weight on day 3 and duodenum on day 42. Oasis fed chicks also had better WG and breast meat yield (p < 0.05) while feeding Oasis did not influence feed efficiency. Feeding Oasis also increased yolk utilization. Chicks with delayed access to feed in the house compensate their initial decreased WG during the later stages. Glucose injection had no beneficial effect, but immediate access to feed in posthatch chicks improved their performance.
进行了一项实验，以研究孵化后立即注射葡萄糖和喂食奥asis对肉鸡后续生长性能的影响。实验采用完全随机设计，析因安排（2×2×2×2）。因素包括蛋重（小蛋重50至60克，中蛋重61至70克）、葡萄糖注射（不注射为对照，注射0.3毫升葡萄糖）、运输期间在运输箱中喂食（喂食奥asis的雏鸡和无水无食的雏鸡）以及到达鸡舍后喂食（到达时立即喂食的雏鸡和额外12小时不喂食的雏鸡）。每个处理重复三次，每个重复25只雏鸡。在7日龄、21日龄和42日龄时测量每个实验单元的活重和采食量，然后计算增重和料重比。在第3天、21天和42天，每个重复选取两只雏鸡进行胴体分析，包括卵黄囊残留重量（第3天）、十二指肠、空肠和回肠的重量和长度，以及肝脏和砂囊的重量。结果表明，与小蛋雏鸡相比，中蛋雏鸡的增重（WG）和饲料效率有所提高（p<0.05）。观察到葡萄糖注射和蛋重之间存在显著交互作用（p<0.05），因此注射葡萄糖的小蛋雏鸡的增重显著降低（p<0.05）。在第3天能够立即获取奥asis的雏鸡，其十二指肠和空肠相对重量更大（p<0.05），在第42天十二指肠相对重量更大。喂食奥asis的雏鸡的增重和胸肉产量也更好（p<0.05），而喂食奥asis对饲料效率没有影响。喂食奥asis还提高了卵黄利用率。在鸡舍中延迟获取饲料的雏鸡在后期阶段弥补了其最初降低的增重。葡萄糖注射没有有益效果，但孵化后雏鸡立即获取饲料可改善其生长性能。
