scholarly journals Prediction of digestible and metabolizable energy of corn distillers dried grains with solubles for growing pigs using in vitro digestible nutrients

2018 ◽  
Vol 96 (5) ◽  
pp. 1818-1824
Author(s):  
Z Huang ◽  
P E Urriola ◽  
G C Shurson
Keyword(s):  
Growing Pigs ◽  
Metabolizable Energy ◽  
Distillers Dried Grains ◽  
Corn Distillers

scholarly journals In vitro unfermented fiber is a good predictor of the digestible and metabolizable energy content of corn distillers dried grains with solubles in growing pigs1

2019 ◽  
Vol 97 (8) ◽  
pp. 3460-3471 ◽  
Author(s):  
Zhikai Zeng ◽  
Jae Cheol Jang ◽  
Brian J Kerr ◽  
Gerald C Shurson ◽  
Pedro E Urriola
Keyword(s):  
Good Predictor ◽  
Crude Protein ◽  
Previous Experiment ◽  
Energy Content ◽  
Metabolizable Energy ◽  
Fermentation Time ◽  
Distillers Dried Grains ◽  
Corn Distillers ◽  
Best Fit

Abstract Characterizing fiber into fermentable and unfermentable fractions may enhance the accuracy of estimating DE and ME energy content in fiber-rich ingredients. Therefore, the objective of this study was to analyze the concentrations of NDF, representing both the fermentable (fNDFom) and unfermentable (uNDFom) portions among sources of corn distillers dried grains with solubles (DDGS), and determine their relative contributions to DE and ME content. The concentrations of DE and ME, as well as apparent total tract digestibility (ATTD) of GE, were measured in a previous experiment. Samples of DDGS (0.5 g) were mixed with fecal inoculum and incubated for 8, 12, and 72 h. The ash corrected NDF (NDFom) content of DDGS residues at each time point was determined. The fNDFom increased with fermentation time of 8 h (21.6%), 12 h (29.0%), and 72 h (68.6%). The ATTD of GE increased as the uNDFom decreased at 8 h (uNDFom8; R2 = 0.83; P < 0.01) and 72 h (uNDFom72; R2 = 0.83; P < 0.01). Likewise, ME content of DDGS increased as uNDFom72 decreased (R2 = 0.59; P < 0.01). The best-fit DE equation was DE (kcal/kg DM) = 2,175 – 3.07 × uNDFom8 (g/kg, DM) – 1.50 × uNDFom72 (g/kg, DM) + 0.55 × GE (kcal/kg DM) (R2 = 0.94, SE = 36.21). The best-fit ME equation was ME (kcal/kg DM) = 1,643 – 2.31 × uNDFom8 (g/kg, DM) – 2.54 × uNDFom72 (g/kg, DM) + 0.65 × GE (kcal/kg DM) – 1.42 × crude protein (g/kg DM) (R2 = 0.94, SE = 39.21). These results indicate that in vitro unfermented fiber is negatively associated with GE and NDF digestibility, and therefore, is a good predictor of DE and ME content in corn-DDGS.

Comparison of digestible and metabolizable energy, digestible phosphorus and amino acid content of corn ethanol co-products from Brazil and United States produced using fiber separation technology for swine

2021 ◽  
Author(s):  
Vinicius R C Paula ◽  
Natália C Milani ◽  
Cândida P F Azevedo ◽  
Anderson A Sedano ◽  
Leury J Souza ◽  
...  
Keyword(s):  
Amino Acid Content ◽  
Basal Diet ◽  
Growing Pigs ◽  
Metabolizable Energy ◽  
Index Method ◽  
Distillers Dried Grains ◽  
Fiber Separation ◽  
The Us ◽  
Index Methods ◽  
Corn Distillers

Abstract Three experiments (Exp.) were conducted to determine and compare the digestibility of nutrients and energy of corn distillers dried grains with solubles (DDGS) from the US (USDDGS), a dried mixture of corn bran with solubles (CBS) from Brazil (BRCBS), and high protein corn distillers dried grains (HP-DDG) from the US (USHPDG) and Brazil (BRHPDG) in growing pigs. The feed ingredients were evaluated for apparent total tract digestibility (ATTD) of gross energy (GE), dry matter (DM), crude protein (CP), ether extract (EE), neutral and acid detergent fiber (NDF and ADF, respectively), digestible and metabolizable energy (DE and ME, respectively) using total collection and index methods in Exp. 1; ATTD and standardized total tract digestibility (STTD) of phosphorus (P) in Exp. 2; and apparent (AID) and standardized (SID) ileal digestibilities of CP and amino acids (AA) in Exp. 3. Fifty crossbred barrows (32.4 ± 6.9 kg, 38.3 ± 5.2 kg and 46.2 ± 5.3 kg BW, in Exp. 1, 2 and 3, respectively) were fed a corn basal diet in Exp. 1, a P-free diet in Exp. 2, and a N-free diet in Exp. 3, or diets with 40% inclusion of test ingredients to provide 10 replications per treatment. Pigs were housed individually in metabolism cages (Exp. 1) or in pens (Exp. 2 and 3) and fed at 2.8 times the maintenance DE requirement (110 kcal / kg BW 0.75) based on their BW at the beginning of each experiment. Except for ATTD of NDF, which tended (P = 0.058) to be greater by index method compared to total collection method, no difference between total collection and index methods were observed for ATTD of remaining nutrients and DE. The ATTD of DM, GE, NDF and DE content of BRHPDG were greater (P < 0.001) than USHPDG, BRCBS and USDDGS. The AID of CP, Arg, His, Ile, Leu, Lys, Thr and Val; and the SID of His, Leu, Lys, and Val of BRHPDG were 8 to 36% greater (P < 0.05) than those from USHPDG. Except for Trp, all AID and SID AA values were greater (P < 0.05) in BRHPDG than in USHPDG. The ATTD of DM, GE, NDF, and ADF; DE and ME content; AID of CP, Arg, Ileu, Leu, Phe, Thr, and Trp; and SID of CP, Arg, Phe, and Thr of USDDGS were 9 to 45% greater (P < 0.05) than those in BRCBS. The ATTD and the STTD of P in USHPDG and USDDGS were 26 to 42% greater (P < 0.05) compared with BRHPDG and BRCBS. In conclusion, BRHPDG had a greater digestibility of energy and most AA than USHPDG, while the BRCBS evaluated had lower nutritional value than the USDDGS source.

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