Abstract #W101

# W101
Digestibility of the crude corn oil in dogs.
Tabyta T. Sabchuk*1, Karoline Vanelli1, Larissa Barrile2, Fabiane Y. Murakami1, Alex Maiorka1, Simone G. Oliveira1, Ananda P. Félix1, 1Federal University of Paraná, Curitiba, Paraná, Brazil, 2Cargil Agricola SA, Uberlândia, Minas Gerais, Brazil.

There are many fat sources used in dog nutrition, such as poultry fat, beef tallow, and soy oil. In addition, there are several factors that can determine the choice of the fat source, such as price, availability, fatty acid profile, chain saturation. One alternative fat source can be the crude corn oil (CCO) that is a co-product of maize, produced worldwide. Besides, CCO has a large amount of linoleic acid, an essential fatty acid for dogs. Thus, the objective was to evaluate the apparent total-tract digestibility (ATTD) and ME of CCO in adult dogs. Three diets were evaluated: a control diet (with 8% beef tallow, CD), and 2 diets containing 92% of the ingredients of the CD and 8% of CCO and another with 8% poultry fat (PF). Diets were sprayed with the fat sources. Nine Beagle dogs were randomly assigned in 2 blocks (2 periods), totaling 6 replicates per treatment. The experimental diets in kibble form were offered for a 5-d adaptation period, followed by 5 d of total fecal collection per period. The ATTD and ME of the tested ingredients (CCO and PF) were calculated according to the substitution method. The results were submitted to Student’s t-test (P < 0.05). The ATTD of DM (98.7% vs 96.0%), acid-hydrolyzed fat (AHF, 98.6% vs 97.4%), GE (99.7% vs 98.6%), and ME (38.08 MJ/kg vs 37.93 MJ/kg) of CCO and PF, respectively, did not differ (P > 0.05). Normally we evaluate the digestibility of diets and not the digestibility of the ingredient itself, such as in this study. Consequently, specific information on the nutritional quality of ingredients is lacking, particularly in fat sources to dogs. We found that the digestibility and ME of CCO was similar to the PF, which is the most frequently used fat source in dog nutrition. Thus, the CCO has high digestibility and can be a co-product with potential use in diets for dogs.

Key Words: companion animal nutrition, fat source, ingredient digestibility