By analyzing the protein, fat, and fiber, and the amounts of carbon, nitrogen, calcium and magnesium in the food by means of sophisticated instruments, Dr. Chen tried to find out which combination would provide the most nutrition for the cattle.
每天實驗牛餵食過一段時間後，陳茂牆就打開「窗子」，用大型吸管伸進牛胃裡，抽取一些消化物，帶回實驗室，分析化驗其中蛋白質、脂肪、粗纖維等成分的變化，有時更以精密儀器進一步分析碳、氮、鈣、鎂… 等元素，然後再根據分析結果，不斷調整飼料的配方。