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首页> 外文期刊>Revista Brasileira de Ciência Avícola >Feeding high-moisture corn grain silage to broilers fed alternative diets and maintained at different environmental temperatures
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Feeding high-moisture corn grain silage to broilers fed alternative diets and maintained at different environmental temperatures

机译：将高湿度玉米谷物青贮饲料到肉鸡喂食替代饮食并保持在不同的环境温度下

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摘要

The effects of the dietary substitution of dry corn by high-moisture corn grain silage (HMCGS) were evaluated on the performance, nutrient digestibility and serum biochemical parameters of broilers reared in an alternative production system and submitted to different environmental temperatures. A total of 288 one-day-old male Cobb chicks were distributed according to a randomized block design in a 3x4 factorial arrangement: three environmental temperatures (hot, thermoneutral or cold) and four levels of HMCGS in substitution of dry corn (0%, 20%, 40% or 60%). The acid analysis showed that the evaluated HMCGS contained average percentage values of ethanol, lactic acid, and acetic acid (expressed in 100% of dry matter) of 0.7690, 2.7320 and 0.0249%, respectively. Propionic and butyric acids were not detected. Dry corn and HMCGS presented pH values of 5.8 and 3.3, respectively. The inclusion of HMCGS reduced dietary pH, as shown by the values of 5.7, 5.4, 5.1 and 4.8 recorded for the diets containing 0%, 20%, 40% and 60% of HMCGS, respectively. There was no significant interaction between diets and environmental temperature. HMCGS may replace up to 40% dry corn in broiler diets when performance, triglyceride levels, and HDL-cholesterol ratio is considered, and up to 60% when nutrient digestibility is evaluated. High environmental temperature impairs broiler performance, nutrient digestibility, and serum biochemistry, demonstrating the influence of environmental temperature on broiler metabolism and performance.
机译：通过高湿润玉米谷物青贮饲料（HMCG）对干玉米饮食取代的影响进行了评价替代生产系统中肉鸡的性能，营养消化率和血清生化参数，并提交给不同的环境温度。共有288人一日雄性COBB小鸡根据3x4阶乘安排的随机块设计分发：三种环境温度（热，热管或冷）和四种水平的HMCG，替代干玉米（0％， 20％，40％或60％）。酸分析表明，评估的HMCG分别含有0.7690,2.7320和0.0249％的0.7690,2.7320％和0.0249％的乙醇，乳酸和乙酸的平均百分比值（以100％表达）。未检测到丙酸和丁酸。干玉米和HMCG分别呈现pH值为5.8和3.3。包含HMCGs降低膳食pH值，如分别为含有0％，20％，40％和60％HMCG的饮食所示的5.7,5.4,5.1和4.8所示。饮食与环境温度之间没有显着的相互作用。当考虑性能，甘油三酯水平和HDL-胆固醇的比例时，HMCGS可以在肉鸡饮食中替换多达40％的干玉米，并且当评估营养消化率时高达60％。高环境温度损害肉鸡性能，营养消化率和血清生物化学，展示了环境温度对肉鸡代谢和性能的影响。

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