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Amino acid digestibility in corn distillers' dried grains with solubles in pigs at different dietary levels of casein and test ingredient.
Animal. 2021 Mar; 15(3):100147.A

Abstract

Digestibility of amino acids (AA) in feed ingredients for pigs has been generally determined by feeding experimental diets containing test feedstuffs as a sole source of N, which may lead to the deficiency or imbalance of AA and hinder an accurate determination of digestibility values. Therefore, the addition of casein in experimental diets may ameliorate the potential negative effects of deficiency or imbalance of AA. In addition, the concentration of test feedstuffs in experimental diets may affect the digestibility of AA in test feedstuffs. Two experiments were conducted with corn distillers' dried grains with solubles (DDGS) as the test feedstuff to determine the effects of increasing concentrations of casein in experimental diets on standardized ileal digestibility (SID) of AA in DDGS (experiment 1) and to investigate the effects of two concentrations of DDGS in experimental diets with or without the addition of casein on SID of AA in DDGS (experiment 2). In experiment 1, 20 barrows (initial BW = 45.3 ± 1.80 kg) surgically fitted with T-cannulas at the distal ileum were allocated to a quadruplicate 5 × 2 incomplete Latin square design with five diets and two periods. Four isonitrogenous diets containing increasing concentrations of casein from 0 to 165 g/kg with decreasing concentrations of DDGS from 466.8 to 0 g/kg and a N-free diet were prepared. The SID of AA, except for arginine, cysteine, and glycine, in DDGS linearly decreased (P < 0.05) with increasing concentrations of casein in experimental diets. Quadratic response (P = 0.023) was observed in the SID of lysine in DDGS when the concentration of casein in experimental diets increased. In experiment 2, the same 20 barrows (initial BW = 52.8 ± 2.99 kg) and experimental design as experiment 1 were used with different diets, which were prepared as a 2 × 2 factorial arrangement with the concentration of DDGS at 466.8 or 155.6 g/kg and that of casein at 0 or 110 g/kg. Regardless of the addition of casein, pigs fed experimental diets containing 466.8 g/kg DDGS had greater (P < 0.01) SID of indispensable AA, except for tryptophan, in DDGS than those fed diets containing 155.6 g/kg DDGS. In conclusion, the addition of casein in experimental diets did not affect the SID of AA in DDGS, whereas the SID of AA in DDGS decreased as the concentration of DDGS in diets decreased.

Authors+Show Affiliations

Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA.Department of Veterinary Clinical Sciences, Purdue University, West Lafayette, IN 47907, USA.Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA. Electronic address: ladeola@purdue.edu.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33785183

Citation

Park, C S., et al. "Amino Acid Digestibility in Corn Distillers' Dried Grains With Solubles in Pigs at Different Dietary Levels of Casein and Test Ingredient." Animal : an International Journal of Animal Bioscience, vol. 15, no. 3, 2021, p. 100147.
Park CS, Ragland D, Adeola O. Amino acid digestibility in corn distillers' dried grains with solubles in pigs at different dietary levels of casein and test ingredient. Animal. 2021;15(3):100147.
Park, C. S., Ragland, D., & Adeola, O. (2021). Amino acid digestibility in corn distillers' dried grains with solubles in pigs at different dietary levels of casein and test ingredient. Animal : an International Journal of Animal Bioscience, 15(3), 100147. https://doi.org/10.1016/j.animal.2020.100147
Park CS, Ragland D, Adeola O. Amino Acid Digestibility in Corn Distillers' Dried Grains With Solubles in Pigs at Different Dietary Levels of Casein and Test Ingredient. Animal. 2021;15(3):100147. PubMed PMID: 33785183.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Amino acid digestibility in corn distillers' dried grains with solubles in pigs at different dietary levels of casein and test ingredient. AU - Park,C S, AU - Ragland,D, AU - Adeola,O, Y1 - 2020/12/25/ PY - 2020/02/28/received PY - 2020/11/05/revised PY - 2020/11/10/accepted PY - 2021/3/31/entrez PY - 2021/4/1/pubmed PY - 2021/4/1/medline KW - Deficiency KW - Distillers dried grains with solubles KW - Nutrient KW - Protein KW - Swine SP - 100147 EP - 100147 JF - Animal : an international journal of animal bioscience JO - Animal VL - 15 IS - 3 N2 - Digestibility of amino acids (AA) in feed ingredients for pigs has been generally determined by feeding experimental diets containing test feedstuffs as a sole source of N, which may lead to the deficiency or imbalance of AA and hinder an accurate determination of digestibility values. Therefore, the addition of casein in experimental diets may ameliorate the potential negative effects of deficiency or imbalance of AA. In addition, the concentration of test feedstuffs in experimental diets may affect the digestibility of AA in test feedstuffs. Two experiments were conducted with corn distillers' dried grains with solubles (DDGS) as the test feedstuff to determine the effects of increasing concentrations of casein in experimental diets on standardized ileal digestibility (SID) of AA in DDGS (experiment 1) and to investigate the effects of two concentrations of DDGS in experimental diets with or without the addition of casein on SID of AA in DDGS (experiment 2). In experiment 1, 20 barrows (initial BW = 45.3 ± 1.80 kg) surgically fitted with T-cannulas at the distal ileum were allocated to a quadruplicate 5 × 2 incomplete Latin square design with five diets and two periods. Four isonitrogenous diets containing increasing concentrations of casein from 0 to 165 g/kg with decreasing concentrations of DDGS from 466.8 to 0 g/kg and a N-free diet were prepared. The SID of AA, except for arginine, cysteine, and glycine, in DDGS linearly decreased (P < 0.05) with increasing concentrations of casein in experimental diets. Quadratic response (P = 0.023) was observed in the SID of lysine in DDGS when the concentration of casein in experimental diets increased. In experiment 2, the same 20 barrows (initial BW = 52.8 ± 2.99 kg) and experimental design as experiment 1 were used with different diets, which were prepared as a 2 × 2 factorial arrangement with the concentration of DDGS at 466.8 or 155.6 g/kg and that of casein at 0 or 110 g/kg. Regardless of the addition of casein, pigs fed experimental diets containing 466.8 g/kg DDGS had greater (P < 0.01) SID of indispensable AA, except for tryptophan, in DDGS than those fed diets containing 155.6 g/kg DDGS. In conclusion, the addition of casein in experimental diets did not affect the SID of AA in DDGS, whereas the SID of AA in DDGS decreased as the concentration of DDGS in diets decreased. SN - 1751-732X UR - https://www.unboundmedicine.com/medline/citation/33785183/Amino_acid_digestibility_in_corn_distillers'_dried_grains_with_solubles_in_pigs_at_different_dietary_levels_of_casein_and_test_ingredient_ L2 - https://www.cambridge.org/core/product/identifier/S1751-7311(20)30149-X/type/journal_article DB - PRIME DP - Unbound Medicine ER -