Sulabo

Effects of phytase on standardized total tract digestibility of P in copra expellers, palm kernel expellers, and palm kernel meal fed to growing pigs

Almaguer, B. L., R. C. Sulabo, and H. H. Stein. 2011. Effects of phytase on standardized total tract digestibility of P in copra expellers, palm kernel expellers, and palm kernel meal fed to growing pigs. J. Anim. Sci. 89(E-Suppl. 1):187 (Abstr.) Link to abstract (.pdf)

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Standardized total tract digestibility of P in dried fermentation biomass, Peptone 50, and P.E.P. 2 Plus fed to weanling pigs

Mathai, J. K., R. C. Sulabo, J. L. Usry, B. W. Ratliff, D. M. McKilligan, and H. H. Stein. 2011. Standardized total tract digestibility of P in dried fermentation biomass, Peptone 50, and P.E.P. 2 Plus fed to weanling pigs. J. Anim. Sci. 89(E-Suppl. 1):85 (Abstr.) Link to abstract (.pdf)

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Amino acid digestibility and energy content of copra expellers, palm kernel expellers, palm kernel meal, and soybean meal fed to growing pigs

Sulabo, R. C., W. S. Ju, and H. H. Stein. 2011. Amino acid digestibility and energy content of copra expellers, palm kernel expellers, palm kernel meal, and soybean meal fed to growing pigs. J. Anim. Sci. 89(E-Suppl. 2):99 (Abstr.) Link to abstract (.pdf)

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Amino acid digestibility and concentration of digestible and metabolizable energy in a threonine co-product fed to weanling pigs

Almeida, F. N., R. C. Sulabo, and H. H. Stein. 2011. Amino acid digestibility and concentration of digestible and metabolizable energy in a threonine co-product fed to weanling pigs. J. Anim. Sci. 89(E-Suppl. 2):63 (Abstr.) Link to abstract (.pdf)

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Amino acid digestibility in Dried Fermentation Biomass, Peptone 50, and PEP2+ fed to weanling pigs

Dried Fermentation Biomass (Ajinomoto Heartland LLC) is a co-product of the commercial production of lysine. Peptone 50 and PEP2+ (TechMix LLC) are co-products of heparin production by the human pharmaceutical industry. The latter two are produced from hydrolyzed pig intestines co-dried with a vegetable protein (Peptone 50) or enzymatically processed vegetable proteins (PEP2+). These co-products are being investigated as possible cost-effective replacements for fish meal in weanling pig diets.

An experiment was performed to measure the apparent and standardized ileal digestibility of CP and amino acids by weanling pigs in Dried Fermentation Biomass, Peptone 50, and PEP2+, respectively, and to compare these values to digestibility values obtained in fish meal.

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Negative effects of distillers dried grains with solubles (DDGS) on fat quality of pigs are not ameliorated by addition of corn germ, tallow, palm kernel oil, or glycerol to finishing diets

Distillers dried grains with solubles (DDGS) can be fed in swine diets at an inclusion rate of up to 30% without negatively affecting pig growth performance. However, DDGS contains high levels of polyunsaturated fatty acids (PUFA), which may promote deposition of unsaturated dietary fatty acids in adipose tissue. Consequently, inclusion of DDGS at more than 20% has been shown to result in increased fat iodine values (IV) and soft belly production.  The disadvantages of this decrease in fat quality include reduced shelf life, increased susceptibility to oxidative damage, and reduced belly sliceability.

An experiment was performed to determine if the addition of different sources of saturated fat would improve belly fat quality in pigs fed a DDGS-based diet. In addition, the hypothesis that the iodine value product (IVP) of the diet can be used to predict backfat IV and belly fat IV of pigs fed diets containing DDGS was tested.

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Amino acid digestibility and concentration of digestible and metabolizable energy in a threonine co-product fed to weanling pigs

Because weanling pigs cannot properly digest soybean meal, animal proteins such as fish meal and spray-dried plasma protein are often used in starter diets. However, the cost of these ingredients has become prohibitive for many swine producers, and new sources of digestible protein for weanling pigs are being sought.

Researchers at the Stein Monogastric Nutrition Lab have been studying a co-product of the production of synthetic L-Threonine, which is used as a supplement in low-protein diets. Synthetic L-Threonine is produced by fermenting a carbohydrate substrate using  bacteria such as E. coli. Threonine is extracted from the fermentation broth. The leftover biomass and substrate have the potential to be used as a feed source, but little is known about its nutritional value. Two experiments were conducted to measure amino acid digestibility and energy concentration in a threonine co-product that is produced by drying this left-over biomass.

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Amino acid digestibility and energy concentration of copra expellers, palm kernel expellers, and palm kernel meal fed to growing pigs

Copra and palm kernel co-products are commonly fed to ruminant animals in some parts of the world. However, very limited research has been reported on the use of these ingredients in swine diets. No values are listed in the NRC (1998) for copra expellers, palm kernel expellers, or palm kernel meal.

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Amino acid digestibility in blood meal fed to weanling pigs

Dried blood meal is commonly used as a high-quality protein source in nursery pig diets. Growth studies have indicated that blood meal can be a better protein source than dried skim milk, fish meal, and soy protein concentrate.  However, the growth effects of blood meal vary across studies; this may be due to differences in protein quality.

Limited data exist on digestibility of crude protein and amino acids in blood meal produced from different species and with different drying methods.  Therefore, an experiment was conducted to measure apparent (AID) and standardized (SID) ileal digestibility of crude protein and amino acids in two sources of blood meal.

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Effect of body weight and reproductive status on phosphorus digestibility and phytase efficacy in pigs

Sulabo, R., R. C. Thaler, and H. H. Stein. 2004. Effect of body weight and reproductive status on phosphorus digestibility and phytase efficacy in pigs. J. Anim. Sci. 82(Suppl. 2):82 (Abstr.) Link to abstract (.pdf)

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Dietary fat sources for weanling pigs

Sulabo, R. and H. H. Stein. 2003. Dietary fat sources for weanling pigs. J. Anim. Sci. 81(Suppl. 2):79 (Abstr.) Link to abstract (.pdf)

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