对生长猪直肠与回肠末端大米粉氨基酸消化率的测定

选用6头(27±3kg)杜洛克×长白×约克夏三元杂交去势公猪,采用粪分析法和瓣前端端回-直肠吻合术回肠末端取样法,测定了大米粉的氨基酸消化率。结果表明,粪分析法所测大米粉的粗蛋白表观消化率为89.67%,真消化率为96.85%;氨基酸表观消化率平均值为89.93%,真消化率平均值为95.37%。回肠末端取样法所测大米粉的粗蛋白表观消化率为68.48%,真消化率为80.39%;氨基酸表观消化率平均值为76.20%,真消化率平均值为85.86%。直肠氨基酸平均真消化率比回肠氨基酸高9.97%。

Test of ileal and rectal amino acids digestibility of rice flour for growing pigs

This experiment determined the digestibility of amino acids of rice flour with the technique of collecting fecal and ileal digesta of six (27±3) kg three-way crossbred (doric×Landrace×Yorkshire)).The results showed that:the apparent and true digestibility of fecal crude protein were 89.67% and 96.85%;the mean value of apparent and true fecal amino acid digestibility of rice flour were 89.93% and 95.37%;the apparent and true digestibility of ileal crude protein were 68.48%,80.39%;the mean value of ileal amino acids were 73.20% and 85.86%.The mean value of true rectal amino acid digestibility was 9.97% higher than the mean value of ileal amino acids.