对15头猪施行瓣前端端- 回直肠吻合术，用于消化试验。
The operation on 15 pigs of ileo - rectal anastomosis in metabolism trial.
通过消化试验和饲养试验，测定试鸭的生产性能、养分利用率、食糜酶活性及黏度。
Through feeding trial and metabolism trial, performance, nutrient availability, enzyme activity and viscosity of chyme were investigated.
但是，消化试验结果却证明，玉米的收割日期对秸秆的养分含量和利用有着重要的影响。
But the results of digestion trial showed that the effect of reaping time was important on content and use of nutrients.
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