The source of fiber and Roxazyme G2 interacted to influence the length of villi in the ileal epithelium of growing pigs fed fibrous corn-soybean diets

3^rd International Conference on Veterinary & Livestock

November 02-03, 2017 Bangkok, Thailand

Felix Fushai, M Tekere, M Masafu, F Siebrits, F V Nherera-Chokuda and A T Kanengoni

University of Venda, South Africa
University of South Africa, South Africa
Tshwane University of Technology, South Africa
Agricultural Research Council, South Africa
Johannesburg Zoo, South Africa

Posters & Accepted Abstracts: J Vet Sci Technol

Abstract :

The eff ects of dietary fi ber source on the histomorphology of the ileal epithelium were examined in growing pigs fed high fi ber (242-250 g total dietary fi ber kg-1 dry matter) diets fortifi ed with Roxazyme���® G2. Th e control was a standard, low fi ber (141 g total dietary fi ber kg-1 dry matter) diet formulated from dehulled soybean (Glycine max), corn (Zea Mays) meal and hominy chop. Five fi brous diets were evaluated in which fi ber was increased by incorporating corn cobs, soybean hulls, barley (Hordeum vulgare L.) brewer�¢����s grains, Lucerne (Medicago sativa) hay or wheat (Triticum aestivum) bran into the control diet. Each diet was duplicated and 220 mg Roxazyme���® G2 kg-1 dry mater was added to one of the mixtures. Seventy-two (72) intact Large White X Landrace male pigs of weight 32���±5.6 kg pigs were allocated to the diets to balance pig live weight in a complete randomized design with a 2 (fi ber source) X (enzyme) factorial arrangement of treatments. Th e pigs were fed ad libitum until slaughter at 94���±2.6 kg live weight. Ileal tissue samples were taken at a point 50 cm above the ileal-cecal valve. Villi length and area, and crypt depth were measured by computerized image analysis. Th e villi length:crypt ratio was calculated. Th e diet and the supplemental enzyme did not aff ect (p>0.05) any of the measured parameters. Diet X enzyme interaction was signifi cant (p=0.016) for villi length, whereby the enzyme reduced the villi length of pigs on the soy-hulls, standard and wheat bran diets with an opposite eff ect on pigs on the corn cob, brewer�¢����s grain, lucerne diets.

Biography :

Felix Fushai has expertise in animal nutrition, with an interest in both monogastric and ruminant nutrition. His main research interest is in optimizing nutritional, economic and environmental outcomes in the utilization of nonconventional feedstuffs in mitigation of the effects of climate change on the conventional livestock feed supply chain.