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Comparison of Normal Dent with Waxy, High-Oil, and Waxy-High-Oil Corns on Pellet Quality of Associated Feeds and Response by Broilers

A. J. Zarate^*, E. T. Moran, Jr. ^* and H. L. Stilborn

^* Poultry Science Department and Alabama Agricultural Experiment Station, Auburn University, Auburn, Alabama 36849
Dupont Specialty Grains, Johnston, Iowa 50131
^||

Correspondence: E. T. Moran, Jr., E-mail: emoran{at}acesag.auburn.edu

This study evaluated corn cultivars having normal and waxy starches, with and without high associated oil content, on pellet quality of corresponding feeds and response to these feeds by male broilers. Upon steam pelleting the complete feeds, an increase in the proportion of intact pellets having additional durability was extensive when waxy starch was present. Displacement of added fat when using high-oil corn also enhanced pellet quality, but this improvement was less than occurred with waxy starch and was not fully additive when both features were combined with waxy high-oil corn. Corns having waxy starch led to improved live performance when associated with a normal level of oil as did high-oil corn having normal starch, but growth was adversely affected when both features were combined. Increased abdominal fat removed from the carcass and reduced deboned breast meat with broilers given the waxy high-oil corn suggest that large increases in productive energy beyond that provided by waxy or high-oil alone adversely altered the balance with existing protein.

Key Words: broiler production • high-oil corn • pellet quality • waxy corn