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http://dx.doi.org/10.5713/ajas.19.0449

Standardized ileal digestibility of amino acids in cereal grains and co-products in growing pigs  

Lee, Su A (Department of Animal Science and Technology, Konkuk University)
Ahn, Jong Young (Department of Animal Science and Technology, Konkuk University)
Son, Ah Reum (Monogastric Animal Feed Research Institute, Konkuk University)
Kim, Beob Gyun (Department of Animal Science and Technology, Konkuk University)
Publication Information
Asian-Australasian Journal of Animal Sciences / v.33, no.7, 2020 , pp. 1148-1155 More about this Journal
Abstract
Objective: The objective was to determine standardized ileal digestibility (SID) of crude protein (CP) and amino acids (AA) in cereal grains and various co-products fed to growing pigs. Methods: Ten feed ingredients tested were barley (9.3% CP), lupin kernels (31.1% CP), and wheat (11.3% CP) as cereal grains, and 2 sources of corn gluten feed produced in China (21.6% CP) and Korea (24.6% CP), corn gluten meal (65.3% CP), lupin hulls (11.6% CP), rice bran (14.5% CP), soybean meal (44.8% CP), and wheat bran (15.4% CP) as co-products. Ten experimental diets were formulated to contain each ingredient as a sole source of N and an N-free diet was used to correct basal endogenous losses of CP and AA. All diets also contained 0.5% Cr2O3 as an indigestible index. A replicated 11×6 incomplete Latin square design with 11 dietary treatments, 6 periods, and 22 animals was employed. Twenty-two barrows with an initial body weight of 64.6±4.9 kg were equipped with a T-cannula in the distal ileum. An experimental period consisted of a 4-d adaptation period and a 2-d collection period. Results: The SID of CP in the barley, lupin kernels, wheat, 2 sources of corn gluten feed, corn gluten meal, lupin hulls, rice bran, soybean meal, and wheat bran were 84.7%, 90.5%, 90.4%, 77.4%, 74.6%, 89.5%, 90.4%, 74.4%, 86.9%, and 63.4% (standard error of the mean [SEM] = 5.3, p = 0.006), respectively. The respective SID values of Lys were 75.5%, 88.4%, 83.9%, 74.7%, 62.4%, 80.3%, 83.9%, 78.5%, 88.0%, and 71.2% (SEM = 3.3, p<0.001), and the SID values of Met were 83.6%, 88.7%, 89.4%, 85.7%, 78.3%, 88.9%, 89.4%, 85.3%, 91.1%, and 77.0% (SEM = 2.4, p<0.001), respectively. Conclusion: The ileal digestibility of protein and amino acids varies among the feed ingredients fed to pigs.
Keywords
Alternative Feed Ingredient; Cereal Grains; Co-products; Digestibility; Swine;
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Times Cited By KSCI : 4  (Citation Analysis)
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