title: Effect of beta-glucanase supplementation to hulless barley- or wheat-soybean meal diets on the digestibilities of energy, protein, beta-glucans, and amino acids in young pigs.
abstract: Studies were carried out to determine the effect of beta-glucanase supplementation to hulless barley-soybean meal (HB+SBM) or wheat-soybean meal (W+SBM) diets on the digestibilities of GE, CP, beta-glucans, and amino acids. Twelve barrows, average BW 7.3 kg, were fitted with a simple T-cannula at the distal ileum, approximately 5 cm from the ileo-cecal sphincter. After a 7-d recuperation period, six pigs were allotted to each dietary treatment according to a two-period crossover design. Both diets were formulated to contain 20% CP without and with supplementation of .2% beta-glucanase. beta-glucanase refers to a mixture of enzymes with endo- and exo-beta-glucanase and beta-glucosidase activities. Chromic oxide was included as a digestibility marker. The pigs were fed three times daily at 0800, 1600, and 2400 and the daily allowance was offered at a rate of 5% of BW. Each experimental period lasted 9 d. Feces were collected for 48 h on d 6 and 7 and ileal digesta for a total of 24 h on d 8 and 9. beta-glucanase supplementation to the HB+SBM diet increased (P < .05 or P < .01) the ileal digestibilities of GE, CP, beta-glucans, and the majority of the amino acids and the fecal digestibilities of GE, CP, and all amino acids measured; the fecal digestibility of beta-glucans in the HB+SBM diet was not affected by beta-glucanase supplementation. There was no effect (P > .05) of beta-glucanase supplementation to the W+SBM diet on the ileal digestibilities of any criteria measured except for beta-glucans (P < .05). The supplementation of beta-glucanase to the W+SBM diet increased (P < .05) the fecal digestibility of energy but not (P > .05) the other criteria measured.
authors.affiliation: Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Canada.
authors.forename: S
authors.initials: S
authors.lastname: Li
authors.forename: W C
authors.initials: WC
authors.lastname: Sauer
authors.forename: S X
authors.initials: SX
authors.lastname: Huang
authors.forename: V M
authors.initials: VM
authors.lastname: Gabert
mesh_terms: D000596:Amino Acids / Q000378:metabolism*; D000818:Animals; D004032:Diet / Q000592:standards / Q000662:veterinary*; D004044:Dietary Proteins / Q000378:metabolism*; D004063:Digestion / Q000187:drug effects* / Q000502:physiology; D004734:Energy Metabolism / Q000187:drug effects* / Q000502:physiology; D005527:Food, Fortified; D005936:Glucans / Q000378:metabolism*; D001467:Hordeum; D008297:Male; D011897:Random Allocation; D013025:Glycine max; D013552:Swine / Q000378:metabolism* / Q000502:physiology; D014908:Triticum; D001617:beta-Glucosidase / Q000494:pharmacology*
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins; D005936:Glucans; D001617:beta-Glucosidase