Minerals in general are not nearly so well absorbed as other nutrients...总体来说，矿物质远远不如其他营养成分好吸收。Thus only the metabolizable portions of a feedstuff can provide energy and essential nutrients.因此,只有饲料的可代谢部分可提供能量和必需的养分.Non-f...
Sewage nutrients do increase algal growth in the harbour.污水中的营养物确实会加快港口的海藻生长。Non-fat dairy products supply the needed nutrients without excessive calories.脱脂乳制品能提供身体所需的营养，而不含过多的热量。Nutrients from the digested food can be ...