Abstract #394

# 394
Digestibility and palatability of diets containing crude corn oil in dogs.
Tabyta T. Sabchuk*1, Daniele C. Lima1, Cleusa B.M. Brito1, Larissa Barrile2, Ananda P. Félix1, Simone G. Oliveira1, Alex Maiorka1, 1Federal University of Paraná, Curitiba, Paraná, Brazil, 2Cargil Agricola SA, Uberlândia, Minas Gerais, Brazil.

Crude corn oil (CCO) has large amount of linoleic acid, an essential fatty acid for dogs. Furthermore, CCO has less variation in composition and quality than animal fats. The objectives were to evaluate the apparent total-tract digestibility (ATTD), ME, and palatability of diets containing CCO in dogs. Four diets were evaluated: a control diet (with 12% poultry fat, PF), and 3 diets containing: 4, 8, and 12% CCO, replacing the PF. Diets were sprayed with the fat sources. Eight Beagle dogs were assigned in a replicated Latin square (4 × 4), totaling 8 replicates per treatment. The experimental diets were offered for a 5-d adaptation period, followed by 5 d of total fecal collection per period. The results were submitted to analysis of regression and orthogonal contrasts (PF vs. CCO). Palatability tests were performed using 2 pair-wise comparisons: 12% PF vs. 12% CCO, both diets with (Test 1) or without (Test 2) palatability enhancer (liquid chicken liver hydrolyzed). Palatability was determined by measuring intake ratio (IR) between the foods offered to 15 adult dogs. Each test was repeated for 3 d (n = 45). The IR data were analyzed by Student’s t-test. The ATTD of DM (80.0, 80.4, 78.2, and 79.2%), CP (80.8, 81.7, 79.4, and 80.0%), GE (84.2, 83.7, 82.3, and 83.5%), and ME (15.68, 15.58, 15.32, and 15.55 MJ/kg DM) of diets 12% PF, 4, 8, and 12% CCO, respectively, did not differ (P > 0.05). The IR did not differ (P > 0.05) between diets with palatability enhancer (0.53 to 12% CCO vs. 0.47 to 12% PF) and without palatability enhancer (0.52 to 12% CCO vs. 0.48 to 12% PF). The use of CCO as a lipid source in diets for dogs does not change the digestibility and the palatability of the diet, even in diets without palatability enhancer, when compared with the PF.

Key Words: companion animal nutrition, fat source, food preference