Growth performance

Effect of a 6-phytase derived from Buttiauxella spp. expressed in Trichoderma reesei on apparent total tract digestibility of Ca and P, bone ash, and growth performance in weaning piglets

Wealleans, A. L., Y. Dersjant-Li, R. M. Bold, and H. H. Stein. 2014. Effect of a 6-phytase derived from Buttiauxella spp. expressed in Trichoderma reesei on apparent total tract digestibility of Ca and P, bone ash, and growth performance in weaning piglets. J. Anim. Sci 92(E-Suppl. 2):237 (Abstr.) Link to abstract (.pdf)

Publication Type: 

Performance of pigs fed diets containing canola meal produced from high protein or conventional varieties of canola seeds

Liu, Y., T. Maison, and H. H. Stein. 2014. Performance of pigs fed diets containing canola meal produced from high protein or conventional varieties of canola seeds. J. Anim. Sci 92(E-Suppl. 2):225-6 (Abstr.) Link to abstract (.pdf)

Authors: 
Publication Type: 

Effects of antibiotic growth promoters in simple or complex diets fed to weanling pigs

Recently, the Food and Drug Administration announced that the number of antibiotic growth promoters that are available to be used by pigs will be reduced to reduce the risk of transferring antibiotic resistance from animals to humans. Only antibiotics that are not used in human medicine may be used as antibiotic growth promoters by animals in the future. To accommodate this change, it may be necessary to re-evaluate the use of antibiotic growth promoters in diets fed to pigs. It is possible that antibiotic growth promoters may be eliminated from swine diets if the complexity of the diets is increased. To test this hypothesis, an experiment was conducted to determine the effects of using an antibiotic growth promoter in diets formulated to vary in complexity.

Authors: 
Publication Type: 

Effects of dietary barley on growth performance, carcass traits and pork quality of finishing pigs

Kim, B. G., D. M. Wulf, R. J. Maddock, D. N. Peters, C. Pedersen, Y. Liu, and H. H. Stein. 2014. Effects of dietary barley on growth performance, carcass traits and pork quality of finishing pigs. Rev. Colomb. Cienc. Pecu. 27:102-113. Link to full text

Effects of reducing the particle size of corn on growth performance of weanling pigs

Rojas, O. J. and H. H. Stein. 2014. Effects of reducing the particle size of corn on growth performance of weanling pigs. J. Anim. Sci. 92(Suppl. 2):158 (Abstr.) Link to abstract (.pdf)

Authors: 
Publication Type: 

Effects of high-protein canola meals fed to weanling pigs on growth performance, organ weights, bone ash, and blood parameters

Parr, C. K., Y. Liu, C. M. Parsons, and H. H. Stein. 2014. Effects of high-protein canola meals fed to weanling pigs on growth performance, organ weights, bone ash, and blood parameters. J. Anim. Sci. 92(Suppl. 2):61-62 (Abstr.) Link to abstract (.pdf)

Authors: 
Publication Type: 

Effect of Bacillus spp. direct-fed microbials on fecal VFA concentrations, growth performance, and carcass characteristics of growing-finishing pigs

Jaworski, N. W., A. Owusu-Asiedu, A. A. Awati, and H. H. Stein. 2014. Effect of Bacillus spp. direct-fed microbials on fecal VFA concentrations, growth performance, and carcass characteristics of growing-finishing pigs. J. Anim. Sci. 92(Suppl. 2):56 (Abstr.) Link to abstract (.pdf)

Publication Type: 

Effects of reducing the particle size of corn on growth performance and carcass characteristics of growing-finishing pigs

Rojas, O. J. and H. H. Stein. 2014. Effects of reducing the particle size of corn on growth performance and carcass characteristics of growing-finishing pigs. J. Anim. Sci. 92(Suppl. 2):52 (Abstr.) Link to abstract (.pdf)

Authors: 
Publication Type: 

Complete replacement of soybean meal in pig diets with hydrolyzed feather meal with blood by amino acid supplementation based on standardized ileal amino acid digestibility

Brotzge, S. D., L. I. Chiba, C. K. Adhikari, H. H. Stein, S. P. Rodning, and E. G. Welles. 2014. Complete replacement of soybean meal in pig diets with hydrolyzed feather meal with blood by amino acid supplementation based on standardized ileal amino acid digestibility. Livest. Sci. 163:85-93. Link to full text (.pdf)

Effects of Caromic 105 on growth performance of weanling pigs

The carob tree (Ceratonia siliqua) is an evergreen native to the Mediterranean area. Its fruit, technically a legume, consists of leathery brown pods that contain hard brown seeds in a sweet pulp. The pods can be crushed, with or without the seeds, to produce a meal that is fed to animals. Because carob pod meal contains 40-45% sugars, it promotes feed intake and adds energy to the diet. Carob pods also contain tannins. As inclusion rates of carob pod meal increase, the tannins can inhibit nutrient digestibility, which limits carob inclusion in swine diets. However, at lower inclusion rates, carob pod meal can reduce the incidence of diarrhea in weanling pigs due to the tannins' effect on the intestinal mucosa.

Caromic 105 is a deseeded, toasted, micronized carob pod meal product. An experiment was conducted to determine the effect of Caromic 105 on growth performance of weanling pigs.

Authors: 
Publication Type: 

Performance and carcass characteristics of growing and finishing pigs fed diets containing high protein or conventional canola meal

Canola meal can be used as a source of protein in swine diets, but conventional canola meal contains less protein than soybean meal. In recent years, new varieties of canola have been developed with seeds that contain more protein and less fiber than conventional canola seeds. The meal from these new varieties of canola has a protein content similar to that of soybean meal.

Previous research at the University of Illinois demonstrated that diets containing at least 30% high protein canola meal (CM-HP) or conventional canola meal (CM-CV) could be fed to nursery pigs without reducing growth performance. It has not yet been determined how much soybean meal can be replaced by conventional or high protein canola meal in diets for growing-finishing pigs without affecting growth performance or carcass characteristics. Therefore, an experiment was performed to determine the optimum inclusion rate of high-protein and conventional meal in diets fed to growing and finishing pigs.

Authors: 
Publication Type: 

Nutritional value of soybean meal produced from high protein, low oligosaccharide, or conventional varieties of soybeans and fed to weanling pigs

Baker, K. M., Y. Liu, and H. H. Stein. 2014. Nutritional value of soybean meal produced from high protein, low oligosaccharide, or conventional varieties of soybeans and fed to weanling pigs. Anim. Feed Sci. Technol. 188:64-73. Link to full text (.pdf)

Authors: 

Reducing feed particle size may enhance performance

Rojas, O. J. and H. H. Stein. 2013. Reducing feed particle size may enhance performance. Page 12 in National Hog Farmer, December 15, 2013. Link to full text

Authors: 

Effects of reducing the particle size of corn on the digestibility of energy and nutrients and growth performance and carcass characteristics of growing-finishing pigs

Rojas, O. J., and H. H. Stein. 2013. Effects of reducing the particle size of corn on the digestibility of energy and nutrients and growth performance and carcass characteristics of growing-finishing pigs. Proceedings of the 2013 Allen D. Leman Swine conference, St. Paul, Minnesota, September 14-17, 2013. Link to full text (.pdf)

Authors: 
Publication Type: 

Effects of different particle sizes of corn on feed efficiency in weanling pigs

Grinding of feedstuffs to small particle sizes is a low-cost way to increase their energy and nutrient digestibility. Currently, nutritionists recommend feeding corn ground to an average particle size of 650 to 700 µm. However, it may be advisable to formulate diets containing corn ground to smaller particle sizes due to the greater metabolizable energy (ME) values of these diets. A previous experiment conducted by Rojas and Stein at the University of Illinois demonstrated that when diets are formulated to contain the same amount of metabolizable energy, feeding diets containing corn ground to different sizes to weanling pigs did not have a negative effect on growth performance.

An experiment was conducted to test the hypothesis that when diets are not adjusted to contain equivalent amounts of metabolizable energy, weanling pigs fed diets containing corn ground to smaller particles sizes will have an improved gain to feed ratio relative to pigs fed corn containing corn ground to larger particle sizes.

Authors: 
Publication Type: 

Effects of including conventional or high protein canola meals in diets for nursery pigs

Canola meal is a by-product of the canola oil industry. Conventional canola meal contains about 37% crude protein, and is a good protein source for swine diets. New varieties of canola with seeds that contain less fiber and more protein than conventional canola seeds have been hybridized. The meals produced from these new hybrids have a crude protein content similar to that of dehulled soybean meal (Table 1). No data exist on how feeding these high protein canola meals to weanling pigs affects growth performance. Inclusion levels also have not been established for the use of these products in nursery diets.

An experiment was conducted to determine the effect on growth performance of including conventional or high protein canola meals at different levels in diets fed to weanling pigs.

Authors: 
Publication Type: 

Growth performance of weanling pigs fed diets containing copra meal, palm kernel expellers, or palm kernel meal

Jaworski, N. W., J. C. González-Vega, and H. H. Stein. 2013. Growth performance of weanling pigs fed diets containing copra meal, palm kernel expellers, or palm kernel meal. J. Anim. Sci 91(E-Suppl. 2):706 (Abstr.) Link to abstract

Publication Type: 

Effects of adjusting the standardized ileal digestibility (SID) amino acids in heat damaged soybean meal (SBM) or distillers dried grains with solubles (DDGS) in diets on performance of weanling pigs

Almeida, F. N., J. K. Htoo, J. Thomson, and H. H. Stein. 2013. Effects of adjusting the standardized ileal digestibility (SID) amino acids in heat damaged soybean meal (SBM) or distillers dried grains with solubles (DDGS) in diets on performance of weanling pigs. J. Anim. Sci. 91(E-Suppl. 2):686 (Abstr.) Link to abstract

Publication Type: 

Effects of dietary soybean oil on pig growth performance, retention of protein, lipids, and energy, and the net energy of corn in diets fed to growing or finishing pigs

Kil, D. Y., F. Ji, L. L. Stewart, R. B. Hinson, A. D. Beaulieu, G. L. Allee, J. F. Patience, J. E. Pettigrew, and H. H. Stein. 2013. Effects of dietary soybean oil on pig growth performance, retention of protein, lipids, and energy, and the net energy of corn in diets fed to growing or finishing pigs. J. Anim. Sci. 91:3283-3290. Link to full text (.pdf)

Effects of different corn particle sizes on growth performance for weanling pigs

The metabolizable energy content of corn ground to smaller particle sizes is greater than that of corn ground to larger particle sizes, because the reduced particle size provides more surface area for digestive enzymes to act on. This results in more starch being digested in the small intestine with a subsequent absorption of glucose.

Currently, nutritionists recommend feeding corn ground to an average particle size of 650 to 700 µm. However, it may be advisable to formulate diets containing corn ground to smaller particle sizes due to the greater ME in these diets. If diets are formulated to a constant ME, the inclusion of added fat can be reduced if corn ground to a smaller particle size is used.

In a previous experiment, growth performance did not differ among growing-finishing pigs (average initial body weight: 32 kg) fed diets containing corn ground to particle sizes ranging from 339 to 865 µm if diets were formulated to the same ME by reducing the concentration of added fat as corn particle size was reduced. The experiment discussed in this report was conducted to test the hypothesis that added fat can be reduced in diets fed to weanling pigs if corn ground to a smaller particle size is used.

Authors: 
Publication Type: 

Pages