摘要
A feeding trial of 20 weeks duration was conducted using 240 point-of-lay Hy-line layers to study the nutritive value of diets containing low-energy agro-industrial by-products namely wheat bran, maize bran, rice bran, brewers’ spent grains and cocoa pod husk on laying performance. The experimental diets were formulated to be iso-caloric and iso-nitrogenous. They contained an average of 16.3% crude protein and metabolisable energy of 10.38 MJ/kg. Each dietary treatment was replicated four times in a completely randomized design. The initial average live weight of the experimental birds was 1.75 kg. Feed and water were provided ad libitum. Among the production parameters studied were feed intake, body weight gain, feed conversion ratio, hen-day production, hen-housed egg production, egg weight, mortality, shell thickness, and Haugh unit. In addition, cost-benefit analysis was carried out to establish the economic feasibility of the experimental diets. With the exception of feed intake which showed significant response (p < 0.05) to dietary treatments, all the other production parameters showed a non-significant positive response (p > 0.05). Cost per kilogram diet was reduced when agro-industrial by-products were used. Dietary treatment T2 supported the best egg production with a net revenue of GH￠371.30. Seasonal increases in the prices of conventional feedstuffs like maize and fishmeal would make the use of agro-industrial by-products in poultry diets even more attractive.
摘要译文
使用240个铺设的Hy-line层进行了为期20周的饲养试验，以研究含有低能农业工业副产品的饮食的营养价值，即麦麸，玉米糠，米糠，酿酒商的花费谷物和可可豆荚果壳的铺设性能。将实验饮食配制成等热量和等氮。它们含有平均16.3％的粗蛋白和可代谢的能量10.38 MJ / kg。每种饮食治疗以完全随机的设计重复四次。实验鸟的初始平均活重为1.75千克。随意提供饲料和水。研究的生产参数包括采食量，体重增加，饲料转化率，母鸡日产量，鸡蛋产量，蛋重，死亡率，壳厚度和Haugh单位。此外，还进行了成本效益分析，以确定实验饮食的经济可行性。除了对饲料处理显示出显着反应（p <0.05）的采食量之外，所有其他生产参数显示出非显着的阳性反应（p> 0.05）。当使用农业工业副产品时，每公斤饮食的成本降低。膳食处理T 2支持最佳产蛋量，净收入为GH¢371.30。玉米和鱼粉等传统饲料价格的季节性上涨将使家禽日粮中农业工业副产品的使用更具吸引力。
A. Donkoh1;H. K. Zanu2*. Development of feed package for layers using low energy agro-industrial by products[J]. African Journal of Agricultural Research, 2010,5(20): 2782 - 2786