The results indicated that there were significant differences between ducks and cocks, Shaoxing ducks and Muscory ducks in the metabolizable energy and amino acid digestibility of feedstuffs.

• 对所测5种饲料代谢能和氨基酸消化率，鸡和番鸭、绍兴鸭以及番鸭和绍兴鸭之间存在明显差异，对不同饲料代谢能及氨基酸消化率互有高低。