Pedersen, T. F., Y. Liu, and H. H. Stein. 2016. Effects of diet energy concentration and an exogenous carbohydrase on growth performance of weanling pigs fed diets containing canola meal produced from high protein or conventional canola seeds. J. Anim. Sci 94:5206-5218. Link to full text (.pdf)

Wheat middlings and red dog are coproducts of the wheat milling process that are used as a source of energy and protein in animal feed. Wheat middlings are granular particles of the wheat endosperm, bran and germ. Red dog consists mainly of the aleurone layer that lies between the bran and the endosperm, along with small particles of bran, germ, and flour. It is often used in extrusion mixtures and as a pellet binder.

The digestibility of crude protein and amino acids in wheat coproducts produced in China has been reported, but there is limited information about the nutritional value of wheat middlings and red dog produced in the United States. In addition, because wheat coproducts vary in terms of the conditions under which they are produced, their nutritional value may vary as well. Therefore, the objective of this experiment was to determine the concentration and digestibility of crude protein and amino acids in ten sources of wheat middlings and in one source of red dog.

Stein, H. H., L. A. Merriman, and J. C. González-Vega. 2016. Establishing a digestible calcium requirement for pigs. Pages 207-216 in Phytate destruction—consequences for precision animal nutrition. Walk, C. L., ed. Wageningen Academic Publishers, Wageningen, Netherlands. Link to full text 

Rojas, O. J. and H. H. Stein. 2016. Use of feed technology to improve the nutritional value of feed ingredients. Anim. Prod. Sci. 56:1312-1316. Link to full text (.pdf)

Rojas, O. J. and H. H. Stein. 2016. Effects of feed processing on the nutritional value of feed ingredients or diets fed to pigs. Pages 33-49 in Proceedings of the 2016 Chinese Swine Industry Symposium, Shanghai, China, October 20-21, 2016. Link to full text (.pdf)

Merriman, L. A., C. L. Walk, C. M. Parsons, and H. H. Stein. 2016. Effects of tallow, choice white grease, palm oil, corn oil, or soybean oil on apparent total tract digestibility of minerals in diets fed to growing pigs. J. Anim. Sci. 94:4231-4238. Link to full text (.pdf)

Kim, B. G., Y. Liu, and H. H. Stein. 2016. Effects of collection time on flow of chromium and dry matter and on basal ileal endogenous losses of amino acids in growing pigs. J. Anim. Sci. 94:4196-4204. Link to full text (.pdf)

Soybean meal is the premier source of high quality plant protein for pig diets. However, the nutritional value of soybean meal can vary among sources due to genetic differences in soybean varieties or differences in climate, soil type, fertilizer application, or processing conditions. It is important that these variations be documented so that producers can accurately formulate diets. Therefore, an experiment was conducted to determine if standardized ileal digestibility (SID) of crude protein and amino acids varied among sources of soybean meal from the U.S., Brazil, Argentina, India, or China.

Merriman, L. A. and H. H. Stein. 2016. Particle size of calcium carbonate does not affect apparent and standardized total tract digestibility of calcium, retention of calcium, or growth performance of growing pigs. J. Anim. Sci. 94:3844-3850. Link to full text (.pdf)