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Inclusion levels of sweet potato root meal in the diet of broilers I. Effect on performance organ weights and carcass quality

机译:肉鸡日粮中甘薯根粉的含量I.对生产性能器官重量和car体品质的影响

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摘要

The amount of corn available for animal and poultry feed has been unpredictable in recent years due to the increased use of corn for ethanol production. As a consequence, there has been an increase in the price of feed, chicken, and chicken products. Researchers are exploring alternative feed sources to substitute for corn in poultry ration. This study evaluated the performance and carcass quality of broilers fed diets containing sweet potato root meal (SPRM). After a complete nutrient analysis of the SPRM, diets were formulated where 0, 10, 20, and 30% of corn was substituted with SPRM. The study utilized 360 1-d-old Cornish X Rock male broiler chickens randomly assigned to one of 4 treatments; 0%, 10%, 20%, and 30% SPRM. Body weights and feed intake (FI) were monitored weekly for 7 wk. Birds were slaughtered on d 50 and FI, BW gain, ADG, ADFI, abdominal fat, dressing percentage, and organ weights measured. White (breast) and dark (leg and thigh) meat were evaluated for nutrient content (protein, moisture, fat, and ash). Results showed birds fed 20% SPRM had lower (P < 0.03) final BW, BW gain and ADG than those fed the 30% SPRM diet. There were no differences in FI and ADFI among treatments. Feed conversion ratio was lowest (P < 0.02) in birds fed 10, 20, and 30% SPRM than the control. There were no differences in dressing percentage among treatments. Abdominal fat was highest (P < 0.05) in birds fed 30% SPRM. Organ weights were similar across treatments except for gizzard which weighed highest (P < 0.05) in the control. For white meat; moisture, protein, fat, and ash were similar across treatments. For dark meat, moisture (P < 0.004) and fat (P < 0.03) were highest in the control, while protein and ash were similar among treatments. Birds fed the SPRM diets compared well with those fed the control for both performance and nutrient content of meat.
机译:近年来,由于越来越多地将玉米用于乙醇生产,可用于动物和家禽饲料的玉米数量无法预测。结果,饲料,鸡肉和鸡肉产品的价格上涨了。研究人员正在探索替代饲料的来源,以代替家禽日粮中的玉米。这项研究评估了饲喂含甘薯根粉(SPRM)的肉鸡的生产性能和car体品质。在对SPRM进行全面的营养分析后,制定了日粮,其中0%,10%,20%和30%的玉米用SPRM代替。该研究使用了360只1日龄的康沃尔X洛克雄性肉鸡,它们被随机分配为4种处理方法之一。 0%,10%,20%和30%SPRM。每周监测体重和饲料摄入量(FI)7周。在第50天宰杀家禽,并测量FI,体重增加,ADG,ADFI,腹部脂肪,敷料百分比和器官重量。对白肉(乳房)和黑肉(腿和大腿)的营养成分(蛋白质,水分,脂肪和灰分)进行了评估。结果显示,饲喂20%SPRM的家禽比饲喂30%SPRM的家禽的最终体重,体重增加和日增重低(P <0.03)。治疗之间的FI和ADFI没有差异。饲喂10%,20%和30%SPRM的家禽的饲料转化率最低(P <0.02)。治疗之间的敷料百分比没有差异。饲喂30%SPRM的家禽的腹部脂肪最高(P <0.05)。除g在对照中体重最高(P <0.05)外,各处理的器官重量相似。对于白肉;不同处理中的水分,蛋白质,脂肪和灰分相似。对于黑肉,对照组中水分(P <0.004)和脂肪(P <0.03)最高,而蛋白质和灰分在处理之间相似。饲喂SPRM日粮的禽类与饲喂对照组的禽类相比,在肉的性能和营养成分方面都很好。

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