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Broiler Utilization of Diets Formulated with High Oil Corn and Energy from Fat

Departamento de Zootecnia, UFRGS, CP776, Porto Alegre, RS, 90001-970, Brazil; Phone: (55 51) 316-6039; FAX: (55 51) 316-6048

Correspondence: S. L. Vieira

A variety of corn having higher oil content (5.7%) than the common yellow dent corn (3.8%) was introduced experimentally in Brazil. Several questions about the nutritional characteristics of this newly developed corn arose from poultry nutritionists, especially regarding its energy utilization by broilers. This study attempted to compare the high oil corn (HOC) with the yellow dent corn (YDC) commonly used in broiler feeds in Brazil. Broiler field performance was evaluated with two groups of broilers fed diets containing HOC or YDC and high or low energy levels from 1 to 21 or from 21 to 42 days. Dry matter digestibility (DMD), ether extract digestibility (EED), and Ame_n were also determined with the two types of corn. Similar values of DMD and EED were found for both types of corn, but AME_n was higher for HOC (3478 kcal/kg) than for YDC (3280 kcal/kg). Results suggest a better utilization of YDC than HOC with young chicks when supplemental oil is added.

Key Words: Alternative ingredients • broiler • high oil corn • metabolizable energy