Location: Commodity Utilization Research
Title: Protein and fiber profiles of cottonseed from upland cotton with different fertilizations Authors
Submitted to: Modern Applied Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: May 11, 2014
Publication Date: June 25, 2014
Citation: He, Z., Zhang, H., Olk, D.C., Shankle, M., Way, T.R., Tewolde, H. 2014. Protein and fiber profiles of cottonseed from upland cotton with different fertilizations. Modern Applied Science. 8(4):97-105. Interpretive Summary: Whole cottonseed and its derived products can be used as human food, animal feed, and industrial raw material. The nutrient value of cottonseed protein might be dependent not only on the total protein content, but also on the level of essential amino acids. Neutral detergent fiber is related to feed intake and acid detergent fiber estimates feed digestability, so both fiber parameters are useful measures of relative feed value, and are frequently used to evaluate forage quality and formulate rations. To complement our earlier work of the ash and elemental contents of cottonseed, in this study we analyzed the protein, amino acid, and fiber contents in the cottonseeds sampled in two years under different fertilization managements. Results presented in this study amplify the database and knowledge of protein and dietary fiber profiles of cottonseed impacted by agronomic management practices, which currently are rarely available.
Technical Abstract: Whole cottonseed and its derived products can be used as human food, animal feed, and industrial raw material. Chemical composition of cottonseed is one of the critical parameters for evaluating its quality and potential end use. Especially, protein and dietary fibers are two desirable nutritional properties of cottonseed. In this study, we determined their contents in cottonseed harvested from different fertilization managements with or without wheat cover crop in two consecutive years. Seed content of crude protein increased in the order of no fertilizer = poultry litter = chemical fertilizer. Both neutral and acid detergent fiber profiles were affected by fertilization and planting year/cover crop in an order reversing that of crude protein. Few statistically significant (P>0.05) impacts were observed on the content of acid detergent lignin. Observations derived from this work will provide information on nutritional value and digestibility of cottonseed as affected by cropping management practices.