Title
Regional and processor variation in the ileal digestible amino acid content of soybean meals measured in growing swine
Author
van Kempen, T.A.T.G.
Kim, I.B.
Jansman, A.J.M.
Verstegen, M.W.A.
Hancock, J.D.
Lee, D.J.
Gabert, V.M.
Albin, D.M.
Fahey Jr, G.C.
Grieshop, C.M.
Mahan, D.
Centraal Instituut voor Voedingsonderzoek TNO
Publication year
2002
Abstract
To assess differences in soybean meal quality related to region of production, researchers in Illinois, Kansas, North Carolina, The Netherlands, and Ohio collected four soybean meal samples processed locally at least 15 d apart. These samples were assayed for ileal amino acid digestibility by pigs using a common soybean meal and a soy protein concentrate as references, and a low-protein casein diet for determination of endogenous amino acid losses. Digestibility was determined at each university using seven barrows surgically fitted with ileal cannulas in a 7 x 7 Latin square design. The experimental diets contained 17% CP from the test material except for the low-protein casein diet. Animals were fed twice daily, 12 h apart, at a level of 45 g·kg-0.75 BW for each meal. Following a 5-d adaptation period, ileal digesta were collected for two 12-h periods for 2 d to be used for determination of ileal digestibility. Variation in amino acid digestibility was very small among and within sites and was much smaller than variation in the concentration of amino acids. Among sites, samples from The Netherlands had less total and thus digestible lysine and methionine than the U.S. samples (P < 0.05). The soybean meals tested in this experiment were approximately 4% higher in amino acids than that reported in the NRC (1998). True (standardized) digestibilities, however, were very similar to NRC values except for cysteine and threonine, which were 5 and 3 percentage points lower in this experiment, respectively. In conclusion, soybeans grown in the United States and locally processed into soybean meal were very similar in nutritional composition. Soybean meals produced in The Netherlands were lower in lysine and methionine (P < 0.05) but had a digestibility similar to that produced in the United States. ©2002 American Society of Animal Science. All rights reserved. Chemicals/CAS: Amino Acids
Subject
Digestibility
Pigs
Soybean Meal
Animalia
Glycine max
Sus scrofa
Amino acid
Animal
Animal disease
Animal food
Catheterization
Chemistry
Comparative study
Metabolism
Nutritional value
Physiology
Standard
Amino Acids
Animal Feed
Animal Nutrition Physiology
Animals
Catheterization
Digestion
Ileum
Male
Netherlands
Nutritive Value
Soybeans
Swine
United States
To reference this document use:
http://resolver.tudelft.nl/uuid:65b813e2-1c85-4f44-9772-d37ec58bd728
TNO identifier
236453
ISSN
0021-8812
Source
Journal of Animal Science, 80 (2), 429-439
Document type
article