Amino acid digestibility in camelina products fed to growing pigs

2013 ◽  
Vol 93 (3) ◽  
pp. 335-343 ◽  
Author(s):  
F. N. Almeida ◽  
J. K. Htoo ◽  
J. Thomson ◽  
H. H. Stein
Keyword(s):  
Amino Acid ◽  
Latin Square ◽  
Sole Source ◽  
Growing Pigs ◽  
Neutral Detergent Fiber ◽  
Biofuel Production ◽  
Canola Meal ◽  
Ether Extract ◽  
Ileal Digestibility ◽  
Camelina Oil

Almeida, F. N., Htoo, J. K., Thomson, J. and Stein, H. H. 2013. Amino acid digestibility in camelina products fed to growing pigs. Can. J. Anim. Sci. 93: 335–343. Camelina seed production has increased in North America because of demand for camelina oil for biofuel production. Camelina expellers (CE) is the co-product that remains after oil has been expelled, and CE usually contains approximately 35% crude protein (CP), 14% ether extract, 10% crude fiber, and 5% ash making it an attractive feedstuff for livestock. An experiment was conducted to determine the standardized ileal digestibility (SID) of CP and amino acids (AA) in two sources of camelina seeds [CS-1 and CS-2; average: 39% acid hydrolyzed ether extract (AEE), 28% CP, 27% neutral detergent fiber (NDF), 12% acid detergent fiber (ADF), 4% ash] and in three sources of CE (CE-1, CE-2, and CE-3; average: 35% CP, 24% NDF, 15% AEE, 14% ADF, 6% ash) and to compare the SID of CP and AA in camelina products with the SID of CP and AA in solvent-extracted canola meal fed to pigs. Seven growing pigs (initial BW 43.5 kg) were randomly allotted to a 7×7 Latin square design with seven diets fed to individually housed pigs over seven periods. Six of the diets contained CS, CE, or canola meal as the sole source of CP and AA and a N-free diet was used to determine basal endogenous losses of CP and AA. The SID of CP in CS-1 and CE-2 was less (P<0.01) than the SID of CP in canola meal, but the SID of CP in CS-2, CE-1, and CE-3 was not different from the SID of CP in canola meal. The SID of Lys in CS-1 and CS-2 was less (P<0.01) than in canola meal, but the SID of Lys was not different among CE-1, CE-2, CE-3, and canola meal. Results from this experiment indicate that the SID of AA in CE is mostly comparable with that of canola meal, but the digestibility of CP and AA in the two camelina seeds was somewhat less than in CE and canola meal. Camelina expellers may, therefore, be included in diets fed to pigs.

scholarly journals Available energy and amino acid digestibility of yellow dent corn fed to growing pigs1

2019 ◽  
Vol 97 (7) ◽  
pp. 2952-2964 ◽  
Author(s):  
Zhiqian Lyu ◽  
Quanfeng Li ◽  
Shuai Zhang ◽  
Changhua Lai ◽  
Chengfei Huang
Keyword(s):  
Amino Acid ◽  
Sole Source ◽  
Ash Content ◽  
Growing Pigs ◽  
Optimal Prediction ◽  
Ether Extract ◽  
Prediction Equations ◽  
Ileal Digestibility ◽  
Available Energy ◽  
Dent Corn

AbstractTwo experiments were conducted to determine the DE and ME as well as the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of CP and AA in corn fed to growing pigs. All corn was yellow dent corn collected from different areas in China. In Exp. 1, 60 crossbred barrows (Duroc × Landrace × Yorkshire; 40.7 ± 3.5 kg BW) were randomly allotted to 1 of 10 diets to determine the DE and ME of corns. Diets were formulated to contain 96.8% of 1 of the 10 corn samples and 3.2% of other microingredients. In Exp. 2, 11 crossbred barrows (Duroc × Landrace × Yorkshire; 30.5 ± 2.3 kg) fitted with a T-cannula at the distal ileum were assigned to a 6 × 11 Youden square design with 6 periods and 11 diets. Diets included a N-free diet based on cornstarch and sucrose and 10 test diets formulated with 96.6% 1 of the 10 corns as the sole source of AA. Chromic oxide (0.3%) was added to each diet as an indigestible marker for calculating the AA digestibility. On a DM basis, the starch, ether extract (EE), CP, NDF, and ADF contents of corns averaged 74.05% (69.98 to 78.59%), 3.83% (2.04 to 4.73%), 9.63% (7.74 to 10.43%), 10.80% (10.27 to 11.46%), and 2.27% (2.03 to 2.57%), respectively. The CV of EE, CP, and ADF was 22.59, 8.22, and 8.21%, respectively. The DE and ME of corns averaged 4,087 and 3,981 kcal/kg, respectively, and ranged from 3,999 to 4,161 kcal/kg and from 3,898 to 4,067 kcal/kg, respectively. The DE and ME values were positively correlated (P < 0.05) with the EE content. Optimal prediction equations of ME were ME = 940.35 + (0.72 × DE) + (21.88 × EE) (R2 = 0.94) or ME = 1,051.50 + (0.82 × DE) − (282.05 × ash) (R2 = 0.99). In Exp. 2, significant differences (P < 0.05) were observed in the SID of Arg, His, Phe, Ala, Pro, Cys, and Tyr. The SID of Lys (average 73.79%), Met (average 87.32%), and Thr (average 80.06%) ranged from 61.45 to 78.47%, from 74.09 to 90.91%, and from 79.19 to 85.79%, respectively. The standardized ileal digestible Met was positively correlated (P < 0.01) with the Met and CP contents. The obtained prediction equations were standardized ileal digestible Met = 31.34 + (3.43 × CP) + (116.04 × Met) and standardized ileal digestible Met = 104.92 + (294.71 × Met) − (7.03 × NDF). In conclusion, sources had an effect on the energy values and ileal digestibility of most AA in corn. The ME can be predicted by the DE combined with either the EE or ash content. The AA concentrations and SID of AA in corn varied largely.

141 Relationship Between Dietary Fiber and Basal Ileal Endogenous Losses of Amino Acids in Growing Pigs

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 72-72
Author(s):  
Chan Sol Park ◽  
Darryl Ragland ◽  
Olayiwola Adeola
Keyword(s):  
Amino Acids ◽  
Body Weight ◽  
Dietary Fiber ◽  
Latin Square ◽  
Sole Source ◽  
Growing Pigs ◽  
The Other ◽  
Canola Meal ◽  
Initial Body Weight ◽  
Ileal Digestibility

Abstract Two experiments were conducted to determine the influence of sources or concentrations of dietary fiber in nitrogen-free diets (NFD) on basal ileal endogenous losses (BEL) of amino acids (AA) and subsequent standardized ileal digestibility (SID) of AA in feed ingredients for pigs derived from such BEL. In Exp. 1, 20 pigs (initial body weight = 46.5 ± 2.97 kg) were assigned to five diets in a quadruplicate 5 × 2 incomplete Latin square design with two periods. Three NFD containing cellulose (insoluble and fermentable fiber), inulin (soluble and fermentable fiber), or carboxymethyl cellulose (CMC; soluble and non-fermentable fiber) at 40 g/kg plus two diets containing soybean meal (SBM) or wheat distillers’ dried grains (WDDG) as the sole source of nitrogen were prepared. Pigs fed NFD containing CMC had greater (P &lt; 0.05) BEL of AA, except for Arg and Pro, than those fed the other NFD. The SID of most AA in SBM and WDDG corrected by BEL of AA from NFD containing CMC were greater (P &lt; 0.05) than those corrected by BEL of AA from the other NFD. Experiment 2 was conducted with 21 barrows (initial body weight = 34.1 ± 2.57 kg) assigned to seven diets in a triplicate 7 × 3 incomplete Latin square design with 3 periods. Seven diets consisted of three NFD containing 4, 8, or 12 g/kg cellulose and four diets containing corn, wheat, SBM, or canola meal as the sole source of nitrogen. There was no difference in the BEL of AA, except for Pro, among pigs fed NFD with increasing concentration of cellulose. The SID of AA in test ingredients were not affected by BEL of AA from NFD containing increasing concentration of cellulose. In conclusion, chemical characteristics of dietary fiber, but not concentration, affect the BEL of AA in pigs.

PSVI-13 Amino Acid Supplementation During the Adaptation Period Did Not Affect the Standardized Ileal Digestibility of Amino Acids in Corn and Soybean Meal Fed to Pigs

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 200-201
Author(s):  
Hyunjun Choi ◽  
Sun Jong You ◽  
Beob Gyun G Kim
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Soybean Meal ◽  
Latin Square ◽  
Sole Source ◽  
Adaptation Period ◽  
Amino Acid Supplementation ◽  
Ileal Digestibility ◽  
Indispensable Amino Acids ◽  
Dietary Treatments

Abstract The objective was to determine the influence of amino acid (AA) supplementation during the adaptation period on the ileal digestibility of crude protein and AA in corn and soybean meal (SBM). Six barrows with an initial body weight of 30.9 ± 2.6 kg fitted with a T-cannula in the distal ileum were assigned to a 6 × 6 Latin square design with 6 dietary treatments and 6 periods. Two experimental diets contained corn or SBM as the sole source of AA and an N-free diet was additionally prepared. For AA supplementation groups, an AA mixture consisted of Gly, Lys, Met, Thr, Trp, Ile, Val, His, and Phe was added to the corn diet and the N-free diet at the expense of cornstarch, and an AA mixture of Lys, Met, and Thr was added to the SBM diet. All diets contained 0.5% of chromic oxide. The 6 experimental diets were fed to the pigs for 4 and half days, and the 3 diets containing AA mixture were switched to the respective diets without AA mixture during the following 2 and half days. Ileal digesta were collected during the last 2 days. The addition of AA mixture during the adaptation period caused increased apparent ileal digestibility of Arg and Trp in corn (P &lt; 0.05), but did not affect that in SBM. The addition of AA mixture during the adaptation period caused increased apparent ileal digestibility of Pro and Gly regardless of feed ingredient (P &lt; 0.05), but did not affect that of other AA. All AA except Pro in corn and SBM were unaffected by the addition of AA mixture during the adaptation period. In conclusion, the addition of amino acid during the adaptation period does not affect the standardized ileal digestibility of indispensable amino acids in feed ingredients.

THE EFFECTS OF ANAEROBIC STORAGE AND PROCESSING OF HIGH-MOISTURE BARLEY ON ITS ILEAL DIGESTIBILITY BY, AND PERFORMANCE OF, GROWING SWINE

1987 ◽  
Vol 67 (3) ◽  
pp. 829-840 ◽  
Author(s):  
E. M. WELTZIEN ◽  
F. X. AHERNE
Keyword(s):  
Aspartic Acid ◽  
Average Daily Gain ◽  
Latin Square ◽  
Growing Pigs ◽  
Neutral Detergent Fiber ◽  
Feed Conversion ◽  
Initial Weight ◽  
High Moisture ◽  
Ileal Digestibility ◽  
Anaerobic Storage

Two studies were undertaken to determine the feeding value of high-moisture barley (HMB) for growing swine. HMB containing approximately 25% moisture and dry barley (approximately 13% moisture) was harvested from the same 21.8-ha field. On a dry matter (DM) basis, the HMB yielded 19.6% more than the dry barley. In the first experiment, 56 crossbred gilts and 24 crossbred barrows of an average initial weight of 28 kg were allocated on the basis of initial weight and sex to diets based on either anaerobically stored HMB or dry barley. Pigs fed the HMB-based diet consumed significantly more feed (P < 0.05) on a DM basis, than did pigs fed the dry-barley-based diet. Average daily gain (ADG) and feed conversion efficiency (FCE) were not affected by diet (P > 0.05). In the second experiment, eight barrows (57.6 kg initial weight), fitted with ileal T-cannulas, were used in a replicated 4 × 4 Latin square to determine the apparent ileal digestibilities of nutrients in diets based on ground or rolled HMB (75% DM) and ground or rolled dry barley (87% DM). There were no differences (P > 0.05) among the four treatment groups in the apparent ileal digestibilities of the DM, CP, gross energy, starch or β-glucan components of the diets. The average ileal digestibility coefficient for β-glucan of the four diets was 79.6% (range: 76–82.2%), suggesting that this component is readily digested by growing pigs. The apparent ileal digestibilities for neutral detergent fiber (NDF) and phosphorus were lower (P < 0.05) for the ground dry barley diet than for the other diets. The apparent ileal digestibilities of lysine, methionine, isoleucine, alanine, valine, and aspartic acid were significantly higher (P < 0.05) for the ground HMB diet than for the dry barley diets. However, the digestibility coefficients for lysine, isoleucine, valine, and aspartic acid for the rolled HMB diet tended to be intermediate between the digestibility coefficients of these amino acids for the ground HMB diet and those for the dry barley diet. Thus, earlier harvest, in combination with anaerobic storage generally improves the digestibility of HMB as compared to dry barley. Key words: Growing swine, high moisture barley, β-glucan, digestibility, amino acid

scholarly journals PSI-12 Effect of a carbohydrase mixture on apparent and standardized ileal digestibility of amino acids in dry extruded-expelled soybean meal fed to growing pigs

2019 ◽  
Vol 97 (Supplement_3) ◽  
pp. 292-293
Author(s):  
Jichen Song ◽  
Ahmed Aljuobori ◽  
C Martin Nyachoti ◽  
Gustavo A Mejicanos
Keyword(s):  
Soybean Meal ◽  
Mixed Model ◽  
Latin Square ◽  
Experimental Period ◽  
Sole Source ◽  
Antinutritional Factors ◽  
Nutrient Digestibility ◽  
Growing Pigs ◽  
Mean Values ◽  
Ileal Digestibility

Abstract Heat treatment could effectively decrease the antinutritional factors in soybean during meal processing. One such progress is the combination of extrusion with expelling, which produces the dry extruded-expelled soybean meal (DESBM), and there is a great interest in exploring its utilization as a dietary ingredient for swine. Thus, eight ileal-cannulated barrows (initial BW = 30 ± 1.3 kg) were used to determine the ileal amino acid (AA) digestibility of DESBM fed to growing pigs with or without multi-carbohydrase (MC) supplementation. Pigs were randomly assigned to 1 of 4 treatments in a replicated 4 × 4 Latin square design to give eight observations per treatment. The experimental diets were formulated to contain one of the two batches of DESBM (DESBM-1 and DESBM-2) as the sole source of protein. All diets contained titanium dioxide (0.3%) as an indigestible marker to calculate nutrient digestibility. Each experimental period lasted for seven days, and ileal digesta samples were collected on d 6 and d 7. The standardized ileal digestibility (SID) of AA were calculated using published mean values to estimate ileal endogenous AA losses. Data were analyzed using the mixed model procedures of SAS, and the final model had treatment, batch, and the interaction between treatment and batch as the main effects. In general, the SID of AA in DESBM-1 and DESBM-2 were not different, such as Ile, Lys, Met, Thr, and Val, which averaged 88.97%, 89.77%, 89.08%, 84.38%, and 86.85% respectively. There were no effects of MC supplementation on AID and SID of AA digestibility in DESBM except for the AID of Trp (P &lt; 0.05). Also, there were no interaction effects of MC supplementation and batch on AA digestibility in DESBM. In conclusion, enzyme supplementation did not improve the AID and SID of AA in DESBM fed to growing pigs.

scholarly journals Excessive heating of 00-rapeseed meal reduces not only amino acid digestibility but also metabolizable energy when fed to growing pigs

2020 ◽  
Vol 98 (7) ◽  
Author(s):  
Maryane S F Oliveira ◽  
Markus K Wiltafsky-Martin ◽  
Hans H Stein
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Basal Diet ◽  
Rapeseed Meal ◽  
Sole Source ◽  
Heating Time ◽  
Growing Pigs ◽  
Metabolizable Energy ◽  
Negative Effects ◽  
Ileal Digestibility

Abstract Two experiments were conducted to test the hypothesis that both the degree of heating and the time that heat is applied will affect the concentration of DE and ME, and the apparent ileal digestibility (AID) and the standardized ileal digestibility (SID) of amino acids (AA) in 00-rapeseed meal (00-RSM) fed to growing pigs. The nine treatments were prepared using a conventional 00-RSM that was either not autoclaved or autoclaved at 110 °C for 15 or 30 min or at 150 °C for 3, 6, 9, 12, 15, or 18 min. In experiment 1, 20 growing barrows with an average initial BW of 21.2 ± 1.2 kg were randomly allotted to the 10 diets in a replicated 10 × 4 Youden square with 10 diets and four periods in each square. A corn-based basal diet and nine diets containing corn and each source of 00-RSM were formulated. Urine and fecal samples were collected for 5 d after 7 d of adaptation. In experiment 2, nine diets contained one of the nine sources of 00-RSM as the sole source of AA, and an N-free diet that was used to measure basal endogenous losses of AA and CP was formulated. Twenty growing barrows with an initial BW of 69.8 ± 5.7 kg had a T-cannula installed in the distal ileum and were allotted to a 10 × 7 Youden square design with 10 diets and 7 periods. Ileal digesta were collected on days 6 and 7 of each 7-d period. Results from the experiments indicated that there were no effects of autoclaving at 110 °C on DE and ME or on AID and SID of AA in 00-RSM, but DE and ME, and AID and SID of AA were less (P &lt; 0.01) if 00-RSM was autoclaved at 150 °C compared with 110 °C. At 150 °C, there were decreases (quadratic, P &lt; 0.05) in DE and ME, and in AID and SID of AA as heating time increased. In conclusion, autoclaving at 110 °C did not affect ME or SID of AA in 00-RSM, but autoclaving at 150 °C had negative effects on ME and SID of AA and the negative effects increased as heating time increased.

scholarly journals Protein quality in experimental diets and amino acid digestibility

2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 28-29
Author(s):  
Chan Sol Park ◽  
Olayiwola Adeola
Keyword(s):  
Amino Acid ◽  
Dietary Protein ◽  
Protein Quality ◽  
Sole Source ◽  
Growing Pigs ◽  
Ileal Digestibility ◽  
Distillers Dried Grains ◽  
Low Protein ◽  
Dietary Casein ◽  
Dietary Treatments

Abstract Digestibility of AA in feed ingredients for pigs has been generally determined by feeding semipurified diets containing test ingredients as a sole source of nitrogen. However, malnutrition caused by feeding semi-purified diets may affect the digestibility of AA. Therefore, the hypothesis of this study was that the standardized ileal digestibility (SID) of AA in distillers’ dried grains with solubles (DDGS) are not affected by the addition of casein in experimental diets. In Exp. 1, 20 growing pigs were allotted to dietary treatments including 2 diets containing either 480 g/kg DDGS or 308 g/kg DDGS and 60 g/kg casein. The SID of Lys and Phe for DDGS in the diet containing casein were greater (P < 0.05) than those without casein. Exp. 2 was conducted with 20 growing pigs assigned to dietary treatments containing 0, 55, 110, or 165 g/kg casein while the concentration of DDGS decreased at 466.8, 311.2, 155.6, or 0 g/kg. The SID of most indispensable AA in DDGS linearly (P < 0.05) decreased with increasing concentration of casein. Experiment 3 was conducted to verify that the results of Exp. 1 were affected by the addition of casein or by the concentration of DDGS or both. Twenty growing pigs were assigned to dietary treatments prepared as a 2 × 2 factorial arrangement with the concentration of DDGS at 466.8 or 155.6 g/kg and casein at 0 or 110 g/kg. The SID of most indispensable AA in DDGS at 466.8 g/kg were greater (P < 0.01) than in DDGS at 155.6 g/kg regardless of dietary casein. Overall, the addition of 60 g/kg casein to experimental diets may increase the SID of AA in low-protein quality ingredients but the addition of higher concentration of casein and low concentration of dietary protein from test ingredients may decrease the SID of AA.

Digestible energy contents and apparent ileal amino acid digestibilities in regular or partial mechanically dehulled canola meal samples fed to growing pigs

1998 ◽  
Vol 78 (4) ◽  
pp. 641-648 ◽  
Author(s):  
C. F. M. de Lange ◽  
V. M. Gabert ◽  
D. Gillis ◽  
J. F. Patience
Keyword(s):  
Amino Acid ◽  
Energy Content ◽  
Growing Pigs ◽  
Canola Meal ◽  
Digestible Energy ◽  
Ileal Digestibility ◽  
High Fiber ◽  
Processing Plants ◽  
Key Words Amino Acid ◽  
Negative Relationships

A study was carried out to determine the influence of partial mechanical tail-end dehulling on apparent ileal amino acid (AA) digestibilities and digestible energy content in canola meal (CM) samples for growing pigs. Twenty Landrace × Yorkshire barrows, with an initial body weight of 35 kg, were fitted with a simple T-cannula at the distal ileum. Digestibilities were determined in 12 experimental diets with observations from five pigs per diet. Five batches of regular CM were obtained from five different crushing plants in Western Canada. A fraction of these batches was partially dehulled. The regular and partially dehulled CM samples were included at 20% in a barley-based diet. One pooled high-fiber CM sample and a straight barley diet were evaluated as well. Partial dehulling increased (P < 0.05) the digestible energy (DE) content from 12.2 to 13.3 MJ kg DM−1, respectively, and the level of crude protein (CP) from 40.6 to 43.8% in regular and partially dehulled CM samples, respectively. The digestibility of threonine was increased (P < 0.05) by partial dehulling, from 72.1 to 75.5%; the digestibilities of CP, lysine, methionine and cysteine were not affected (P > 0.05). Only the digestibilities of methionine and threonine were lower (P < 0.05) in the high-fiber CM sample than in the regular and partially dehulled samples. Digestible energy content, which ranged from 10.8 to 14.2 MJ kg DM−1, differed (P < 0.05) between crushing plants for both regular and partially dehulled CM samples. The digestibility of lysine did not differ (P > 0.05) between processing plants for the regular CM samples. The digestibility of lysine did not differ (P > 0.05) between processing plants for the regular CM samples. In contrast, there were differences (P < 0.05) in lysine digestibility, ranging from 74.8 to 83.8%, and methionine, ranging from 80.4 to 86.9%, between crushing plants for partially dehulled samples. There were low negative relationships between apparent ileal AA digestibilities and NDF, ADF and CF levels (r < 0.39) and between DE content and NDF, ADF and CF levels (r < 0.36) in the CM samples. In conclusion, the reduction in fiber content by mechanical tail-end dehulling increased the supply of DE and the level of CP, but did not influence apparent ileal CP or AA digestibilities, except for threonine which was slightly increased. Key words: Amino acid, canola meal, dehulling, ileal digestibility, pig

scholarly journals The direct and difference procedures result in similar estimates for amino acid digestibility in feed ingredients fed to growing pigs

2020 ◽  
Vol 98 (8) ◽  
Author(s):  
Maryane S F Oliveira ◽  
John K Htoo ◽  
Hans H Stein
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Soybean Meal ◽  
Crude Protein ◽  
Sole Source ◽  
Growing Pigs ◽  
Cereal Grains ◽  
Ileal Digestibility ◽  
Wheat Middlings ◽  
The Difference

Abstract An experiment was conducted to test the hypothesis that values for standardized ileal digestibility (SID) of amino acids (AA) in corn, wheat, and wheat middlings obtained using the direct procedure are not different from values obtained using the difference procedure. Sixteen ileal-cannulated barrows (initial BW: 69.5 ± 5.0 kg) were allotted to a replicated 8 × 4 Youden Square design with 8 diets and 4 periods. Each period consisted of 5 d of adaptation to the diet and 2 d of collection of ileal digesta. Four diets were based on soybean meal (SBM), corn, wheat, or wheat middlings as the only AA-containing ingredients. Three additional diets were based on a mixture of SBM and corn, SBM and wheat, or SBM and wheat middlings, and an N-free diet was also used. The apparent ileal digestibility (AID) and the SID of crude protein (CP) and AA for the 4 diets containing SBM, corn, wheat, or wheat middlings as the sole source of AA were calculated using the direct procedure. The AID and SID of CP and AA for the 3 mixed diets containing SBM and corn, wheat, or wheat middlings were also calculated and the contribution of digestible AA from SBM was subtracted from the AID or SID values for the diets. The AID or SID of AA in corn, wheat, and wheat middlings were subsequently calculated by difference. Results indicated that the AID values for a few AA were lower (P &lt; 0.05) if the direct procedure was used instead of the difference procedure, regardless of ingredient. The AID of Trp was greater in corn and wheat middlings, and the SID of Trp in corn and wheat middlings tended to be greater, if the direct procedure rather than the difference procedure was used, but that was not the case for wheat (interaction, P &lt; 0.05 and P &lt; 0.10, respectively). However, for all other indispensable AA, and for most of the dispensable AA, the SID of AA in corn, wheat, and wheat middlings was not different between the difference procedure and the direct procedure. Therefore, values for SID of AA in cereal grains and fiber-rich ingredients may be determined using either the direct or the difference procedure.

PSVI-18 Nutritional Value of High-protein Yeast Products Fed to Growing Pigs in Comparison to Commonly Used Protein Sources in Swine Diets

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 204-204
Author(s):  
Ricardo Garavito Duarte ◽  
Jorge Y Perez-Palencia ◽  
Kevin Herrick ◽  
Crystal L Levesque
Keyword(s):  
Soybean Meal ◽  
Latin Square ◽  
Sole Source ◽  
Growing Pigs ◽  
High Protein ◽  
Ileal Digestibility ◽  
Protein Sources ◽  
Alternative Ingredients ◽  
Diet Formulation ◽  
Swine Diets

Abstract Alternative ingredients and co-products from the ethanol and biofuel industries represent an opportunity for utilization in swine diets. The objective of this study was to determine standardized ileal digestibility (SID) of AA in two yeast-based high protein DDGS products (HP-DDGS) fed to growing pigs in comparison to common swine diet protein sources. Cornstarch-based diets were formulated using six ingredients as the sole source of AA: spray dried HP-GDDS, ring dried HP-GDDS, conventional DDGS, soybean meal (SBM), enzymatically-treated soybean meal (HP300) and fishmeal (FM). A N-free diet was used to estimate endogenous ileal AA losses. Seven barrows (25 ± 0.8 kg BW) were fitted with a simple T-cannula at the distal ileum. The experiment was conducted as a 7 × 7 Latin square design with 7 collection periods of 7d (5d adaptation and 2d ileal digesta collection). Pigs were fed at 4% of BW. Diets and ileal digesta were analyzed for AA and titanium. Digestibility values were calculated according to the marker method. The CP and AA concentrations in Spray HP-GDDS and Ring HP-GDDS samples were higher than in the DDGS sample and similar to the SBM and HP300 samples. General SID values were within the mean +/- SD of NRC (2012) values for the six ingredients evaluated. The SID of AA was greater (P &lt; 0.05) in HP300 than in the other protein sources (90.09 vs. 79.97). The SID values were generally similar (P &gt; 0.05) in SBM, FM, Spray HP-GDDS, and Ring HP-GDDS samples (81.49, 78.71, 81.52, and 79.20). The SID values for Lys were greater (P &lt; 0.05) in Spray HP-GDDS than in Ring HP-GDDS and DDGS (83.56 vs. 77.33 and 68.53). The HP-GDDS products are potential alternative ingredients to commonly used protein sources in swine diets and the obtained data allows its use in practical diet formulation.

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