This paper introduces the construction status of National Nature Reserves in China, and then it points out some primary problems in the construction of National Nature Reserves. Finally, we put forward some related countermeasures and suggestions.

A mathematical programming model of a representative New York dairy farm is developed to identify optimal management adjustments to increased availability of corn distillers dried grains with solubles (DDGS). While at current prices DDGS feeding is limited to dry cows and young stock, as prices...