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Amino acid digestibility of corn distillers' dried grains with solubles with the addition of casein in pigs.
J Anim Sci. 2018 Nov 21; 96(11):4674-4684.JA

Abstract

This experiment was conducted to determine the ileal digestibility of CP and AA in casein by regression analysis and to investigate the effects of casein in experimental diets on the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of CP and AA in corn distillers' dried grains with solubles (DDGS) fed to pigs. Twenty barrows (initial BW = 50.5 ± 4.46 kg) surgically fitted with T-cannulas at the distal ileum were used. Eighteen pigs were assigned to a triplicate 6 × 3 incomplete Latin Square design with 6 diets and 3 periods. Two pigs were used as replacements. Three diets were prepared to contain 60, 100, or 140 g/kg casein to determine the ileal digestibility of CP and AA in casein by regression analysis, and 2 diets were prepared to contain either 480 g/kg DDGS or 308 g/kg DDGS and 60 g/kg casein. Casein and DDGS were the sources of nitrogen (N) in experimental diets. A N-free diet was prepared based on cornstarch and dextrose. Experimental periods consisted of 5 d of adaptation and 2 d of ileal digesta collection periods. The AID of CP and AA in casein linearly increased (P < 0.01) with increasing concentration of casein in the diets. The SID of indispensable AA in casein ranged from 94.7% (SEM = 1.16) for Ile in pigs fed the diet containing 60 g/kg casein to 103.3% (SEM = 2.21) for Arg in pigs fed the diet containing 100 g/kg casein. Except for Arg, pigs fed the diet containing DDGS and casein had greater (P < 0.001) SID of CP and indispensable AA than those fed the diet containing DDGS without casein. The ileal digestibility of indispensable AA in casein determined by regression analysis ranged from 96.8% (SE = 3.14) for Thr to 103.1% (SE = 4.40) for Arg. The AID and SID of CP and AA for DDGS in the diet containing casein were calculated by difference method using the ileal digestibility of CP and AA in casein determined by regression analysis. The AID of Lys for DDGS in the diet containing casein was greater (P = 0.035) than those without casein; however, the AID of CP and the other indispensable AA, except for Arg, Phe, and Trp, for DDGS in the diet containing casein was less (P < 0.05) than those without casein. The SID of Lys and Phe for DDGS in the diet containing casein was greater (P < 0.05) than those without casein. In conclusion, improved AA composition in semi-purified experimental diets may affect the SID of AA in low-quality protein ingredients.

Authors+Show Affiliations

Department of Animal Sciences, Purdue University, West Lafayette, IN.Department of Veterinary Clinical Sciences, Purdue University, West Lafayette, IN.Department of Animal Sciences, Purdue University, West Lafayette, IN.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30084996

Citation

Park, Chan Sol, et al. "Amino Acid Digestibility of Corn Distillers' Dried Grains With Solubles With the Addition of Casein in Pigs." Journal of Animal Science, vol. 96, no. 11, 2018, pp. 4674-4684.
Park CS, Ragland D, Adeola O. Amino acid digestibility of corn distillers' dried grains with solubles with the addition of casein in pigs. J Anim Sci. 2018;96(11):4674-4684.
Park, C. S., Ragland, D., & Adeola, O. (2018). Amino acid digestibility of corn distillers' dried grains with solubles with the addition of casein in pigs. Journal of Animal Science, 96(11), 4674-4684. https://doi.org/10.1093/jas/sky309
Park CS, Ragland D, Adeola O. Amino Acid Digestibility of Corn Distillers' Dried Grains With Solubles With the Addition of Casein in Pigs. J Anim Sci. 2018 Nov 21;96(11):4674-4684. PubMed PMID: 30084996.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Amino acid digestibility of corn distillers' dried grains with solubles with the addition of casein in pigs. AU - Park,Chan Sol, AU - Ragland,Darryl, AU - Adeola,Olayiwola, PY - 2018/04/05/received PY - 2018/07/30/accepted PY - 2018/8/8/pubmed PY - 2019/2/12/medline PY - 2018/8/8/entrez SP - 4674 EP - 4684 JF - Journal of animal science JO - J Anim Sci VL - 96 IS - 11 N2 - This experiment was conducted to determine the ileal digestibility of CP and AA in casein by regression analysis and to investigate the effects of casein in experimental diets on the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of CP and AA in corn distillers' dried grains with solubles (DDGS) fed to pigs. Twenty barrows (initial BW = 50.5 ± 4.46 kg) surgically fitted with T-cannulas at the distal ileum were used. Eighteen pigs were assigned to a triplicate 6 × 3 incomplete Latin Square design with 6 diets and 3 periods. Two pigs were used as replacements. Three diets were prepared to contain 60, 100, or 140 g/kg casein to determine the ileal digestibility of CP and AA in casein by regression analysis, and 2 diets were prepared to contain either 480 g/kg DDGS or 308 g/kg DDGS and 60 g/kg casein. Casein and DDGS were the sources of nitrogen (N) in experimental diets. A N-free diet was prepared based on cornstarch and dextrose. Experimental periods consisted of 5 d of adaptation and 2 d of ileal digesta collection periods. The AID of CP and AA in casein linearly increased (P < 0.01) with increasing concentration of casein in the diets. The SID of indispensable AA in casein ranged from 94.7% (SEM = 1.16) for Ile in pigs fed the diet containing 60 g/kg casein to 103.3% (SEM = 2.21) for Arg in pigs fed the diet containing 100 g/kg casein. Except for Arg, pigs fed the diet containing DDGS and casein had greater (P < 0.001) SID of CP and indispensable AA than those fed the diet containing DDGS without casein. The ileal digestibility of indispensable AA in casein determined by regression analysis ranged from 96.8% (SE = 3.14) for Thr to 103.1% (SE = 4.40) for Arg. The AID and SID of CP and AA for DDGS in the diet containing casein were calculated by difference method using the ileal digestibility of CP and AA in casein determined by regression analysis. The AID of Lys for DDGS in the diet containing casein was greater (P = 0.035) than those without casein; however, the AID of CP and the other indispensable AA, except for Arg, Phe, and Trp, for DDGS in the diet containing casein was less (P < 0.05) than those without casein. The SID of Lys and Phe for DDGS in the diet containing casein was greater (P < 0.05) than those without casein. In conclusion, improved AA composition in semi-purified experimental diets may affect the SID of AA in low-quality protein ingredients. SN - 1525-3163 UR - https://www.unboundmedicine.com/medline/citation/30084996/Amino_acid_digestibility_of_corn_distillers'_dried_grains_with_solubles_with_the_addition_of_casein_in_pigs_ L2 - https://academic.oup.com/jas/article-lookup/doi/10.1093/jas/sky309 DB - PRIME DP - Unbound Medicine ER -