发酵玉米秸秆的生长育肥猪有效能和氨基酸标准回肠消化率评定

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中图分类号：S816.6 文献标志码：A 文章编号：0366-6964（2025）10-5030-09

Abstract： The objective of this paper is to analyze the nutritional composition of fermented corn straw，determine its effective energy and standardized ileal digestibility （SID） of amino acids for growing-finishing pigs，and evaluate the feasibility of using fermented corn straw as an unconventional feedstuf in pig feeding. In Experiment 1，the substitution method was used to determine the digestible energy（DE）and metabolizable energy （ME） of fermented corn straw for fattening pigs.Twelve healthy crossbred barrows[Duroc × （Landrace x LargeWhite）]（DLY） with an initial body weight of （65±3.08 ） kg were selected and randomly divided into two treatments using a 2×2 crossover design，with six replicates per treatment and one pig per replicate. The experimental diets included a corn-soybean meal-based diet and a fermented corn straw diet. In Experiment 2，a nitrogen-free diet method was employed to determine the apparent and standardized ileal amino acid digestibility of fermented corn straw for growing pigs. Six healthy DLY crossbred barrows with a T-cannula at the diatal ileum and an initial body weight of （42.7±3.3） ） kg were selected and randomly divided into two treatments using a 2×2 crossover design，with three replicates per treatment and one pig per replicate. The results showed that the DE and ME values of fermented corn straw for finishing pigs were 5.85 and 5.61MJ⋅kg-1 ，respectively. The SID of essential amino acids in fermented corn straw was 73.82% ，the SID of non-essential amino acids was 65.09% ，and the SID of total amino acids and crude protein was 70.33% and 61.60% ，respectively. In conclusion，the results suggest that as a non-conventional feed ingredient，the fermented corn straw has a SID of amino acids similar to conventional feed ingredients such as wheat bran and corn DDGS in the Tables of Feed Composition and Nutritive Values in China （ 35th Edition）. Furthermore，its low cost and high feed value，which could provide theoretical support and technical assistance for addressing the shortage of feed ingredients in China.

Keywords： fermented corn straw； growing and fattening pigs； effective energy； SID ofamino acids

∗ Corresponding author： QIAO Shiyan，E-mail： qiaoshiyan@ cau. edu. cn

民为国基，谷为民命，粮食安全是“国之大者”，而饲料粮安全事关粮食安全大局。（剩余13170字）