November/December 2010 Lab News


Scott Baker successfully defended his Masters Thesis entitled, “Aspects of Phosphorus Nutrition in Pigs”. Scott completed 3 experiments that evaluated fundamental aspects of P nutrition in pigs and he has a very nice thesis.

Scott Baker and his MS committee, Dec. 22, 2010

Scott Baker and his MS committee, Dec. 22, 2010


Kil, D. Y., and H. H. Stein. 2010. Invited Review. Management and feeding strategies to ameliorate the impact of removing antibiotic growth promoters from diets fed to weanling pigs. Can. J. Anim. Sci. 90:90:447-460.

Baker, K. M., B. G. Kim., and H. H. Stein. 2010. Amino acid digestibility in conventional, high protein, or low oligosaccharide varieties of full-fat soybeans and in soybean meal by weanling pigs. Anim. Feed Sci. Technol. 162:66-73.

Stein, H. H. 2010. Nutrient and energy utilization by swine. Pages 31-42 in Proc. 26th annual North Carolina Swine Nutrition conference, Nov. 10, 2010. Raleigh, NC.

Rojas, O. J. and H. H. Stein. Fermented soybean meal in diets fed to pigs. National Hog Farmer, December issue.

Personnel changes

Brenda Almaguer left our group after completing her six-month internship. She has now returned to Mexico where she will work to complete the requirements for the Masters Degree. We have enjoyed having Brenda in our group and we wish her the very best in the future.

Lab activities

Kate started an experiment to measure the ME in corn co-products.

Kate also started experiments to measure the digestibility of AA, energy, and P in Lemna Protein Concentrate.

Diego started an experiment to measure phosphorus and energy digestibility in canola, cotton seed, and sunflower products.

Ferdinando completed the animal work for his experiment on AA digestibility in blood meals.

Jin Yoon completed work to measure the in vitro digestibility of AA in DDGS.

Kate and Dr. Sulabo completed an experiment to measure the Lys requirement of 20 to 50 kg pigs.

Grant Petersen completed experiments to estimate the Trp:Lys ratio in diets fed to pigs.


Sarah, Ferdinando, and Neil Jaworski (undergraduate student) travelled to Moline, IL, to receive training in using the Bomb Calorimeter in our laboratory.

Dr. Stein travelled to North Carolina to give an invited talk at the North Carolina Nutrition Conference. His presentation was entitled “Energy and nutrient utilization by swine”.

Dr. Stein also participated in the Soybean Connect Conference in St. Louis, IL.

The entire group participated in our annual Team Building Trip. This year we visited ADM Animal Nutrition in Quincy, IL and Iowa State University in Ames IA. At ADM, we were hosted by Dr. Victor Perez (former graduate student with Dr. Pettigrew). We toured the research laboratories, a pilot feed mill, a commercial feed mill and the animal feed research facilities. It was a very interesting day and we learned a lot. At Iowa State University we visited Dr. John Patience and his graduate students and learned about the research they are conducting. We also had time to socialize with his students and had a very pleasant time in Ames.

Dr. Stein travelled to Purdue University, West Lafayette, IN, and gave an invited presentation at the Animal Nutrition Seminar. He also visited with faculty and students in the department.

Grant Petersen, Scott Baker, Oscar Rojas, and Tanawong Maison travelled home over the holidays to spend time with their families.

Our Group in The Ensminger Room at Iowa State University, Dec. 3, 2010

Our Group in The Ensminger Room at Iowa State University, Dec. 3, 2010