本研究旨在探討雞餵飼一般飼糧後其糞尿排泄量及成分含量之影響。試驗以16週齡畜試土雞20隻、40週齡來亨蛋雞12隻及30週齡紅羽土雞16隻為試驗動物，餵飼一般實用飼糧，經個別上籠適應3至7日後，記錄每日飼料採食量及排泄量，為期6至7日。排泄物經秤重、烘乾後計算乾物質率，並分析飼料及雞糞中氮、磷、銅、鋅、鐵、錳、鉀、鉛、鉻、鎘、汞、BOD及COD含量等。試驗結果顯示，每日每隻平均採食量，畜試土雞約81g、來亨蛋雞約70g、紅羽土雞約95g；每日每隻平均排泄量，畜試土雞約52g、來亨蛋雞約74g、紅羽土雞約81g。排泄物磷含量在3.30%至5.61%間。以飼糧每日每隻採食量（X）對雞排泄量（Y）作直線迴歸求得排泄量，畜試土雞為Y＝0.032X+52.15，r＝0.42；來亨蛋雞為Y＝1.156X－7.77，r＝0.77；紅羽土雞為Y＝0.44X+39.58，r＝0.61。排泄物中銅、鋅、鐵及錳等礦物元素含量大約為飼糧礦物元素量2至5倍之多，排泄物銅鋅量均在我國規定畜禽加工肥料之最高限量內。排泄物中重金屬含量，鉛在0至3.25ppm之間，鎘在0.11至1.13ppm之間，鉻在0.49至9.91ppm之間，汞在0至0.046ppm之間。排泄物總氮含量以畜試土雞最高，平均為7.62%，依序為紅羽土雞4.77%，來亨蛋雞為4.34%。雞排泄物BOD介於96,486至149,671mg/L；COD介於627,640至1,007,733mg/L，本試驗結果可供相關單位及業者飼養管理及污染防治之參考。

The research was conducted to investigate the effects of chicken fed with practical diets on the excreta amount and its contents. Twenty 16-week-old Livestock Research Institute (LRI) native chickens, 12 40- week-old Leghorn hens and 16 30-week-old red-feather native chicken were used as experimental animals. The birds were fed with practical diets and accommodated for 3 to 7 days before starting experiment in the metabolic cages. Daily feed intake and excreta were recorded for 6 to 7 consecutive days. The excreta were weighed, dried for calculated for dry matter content. The feeds and excreta were analyzed for the content of nitrogen, phosphorus, copper, zinc, iron, manganese, potassium, lead, cadmium, chromium, mercury, biochemical oxygen demand (BOD) and chemical oxygen demand (COD). The results indicated that average daily feed intake of LRI native chicken, Leghorn hen and red-feathered native chicken were about 81 g, 70 g and 95 g, respectively. Average daily excreta amount of LRI native chicken, Leghorn hen and red-feather native chicken were about 52 g, 74 g and 81 g, respectively. Phosphorus content of excreta was between 3.30 and 5.61%. The regression equation relating feed intake (X) and excreta (Y) was analyzed. The regression equations were as follows: LRI native chicken, Y=0.032X+52.15, r=0.42; Leghorn hen, Y=1.156X-7.77, r=0.77; and red-feathered native chicken, Y=0.44X+39.58, r=0.61. The content of copper, zinc, iron and manganese in excreta were 2 to 5 times more than those in the feed. Excreta copper and zinc content were under the maximum limit amount of the compost regulation of Taiwan. Lead content of excreta was between 0 and 3.25 ppm. Cadmium was between 0.11 and 1.13 ppm. Chromium was between 0.49 and 9.91 ppm. Mercury was between 0 and 0.046 ppm. Excreta nitrogen content was highest in LRI native chicken at 7.62%, followed by red-feathered native chicken at 4.77% and Leghorn hen at 4.34%. Excreta BOD was between 96,486 and 149,671 mg/L; COD was between 627,640 and 1,007,733 mg/L. The results can be used for the reference of feeding management and pollution control of related units and the industry.