The Effect of Various Inclusion Levels of β-Mannanase on Nutrient Digestibility in Diets Consisting of Corn, Soybean Meal and Palm Kernel Expellers Fed to Growing Pigs

Abstract

An experiment was conducted to determine the effects of various inclusion levels of β-mannanase on the energy and mannan digestibility in diets containing corn, Soybean Meal (SBM) and Palm Kernel Expellers (PKE) fed to growing pigs. The PKE contained 92.6% dry matter, 4,417 kcal gross energy kg −1 , 4.02% ash and 31.3% mannan on an as-fed basis. Six barrows with an initial body weight of 41.4±1.7 kg were individually housed in metabolism crates equipped with a feeder and a nipple drinker. Pigs were randomly allotted to a 6×6 Latin square design with 6 dietary treatments and 6 periods. An experimental period consisted of a 4-d adaptation period and a 5-d collection period. Pigs were fed corn-SBMbased diets containing 15% PKE with 0, 400, 800, 1,600, 2,400 or 3,200 U kg −1 of β-mannanase. A chromic oxide was added as an indigestible marker for fecal collection according to a marker-to-marker procedure. Urine was also collected from each period. Each of the 6 diets contained 3.60, 3.91, 4.06, 2.57, 3.57 and 2.59% of mannan, respectively. No linear and quadratic effects of β-mannanase supplementation on apparent total tract digestibility of energy were observed. The digestibility of mannan was also not affected by the increasing level of β-mannanase supplementation. In conclusion, exogenous β-mannanase did not affect the energy and mannan digestibility in corn-SBM-based diets containing 15% of PKE fed to growing pigs.

Co-products in maize-soybean growing-pig diets altered <i>in vitro</i> enzymatic insoluble fibre hydrolysis and fermentation in relation to botanical origin

“…In line with previous studies (Willamil et al, 2012;Kong et al, 2015;Kwon et al, 2015;Bach Knudsen, 2015), in the present study, there were strong influences of the fibre source on both enzymatic and fermentative degradation of dietary fibre. Overall, enzymatic insoluble fibre degradation was highly variable, and limited (0.02 -0.33).…”

An enzyme complex increases in vitro dry matter digestibility of corn and wheat in pigs

“…There are many studies that assessed the effects of various exogenous enzyme products for swine diets, but the results of these experiments were different due to the differences between studies such as the enzymes, response criteria and ingredients compositions (Kwon et al 2015 ; Jones et al 2015 ; Mok et al 2015 ). These in vivo experiments require many expenses such as labor and money.…”

Palm Kernel Cake Extracts Obtained from the Combination of Bacterial Fermentation and Enzymic Hydrolysis Promote Swine Small Intestine IPEC-J2 Cell Proliferation and Alleviate LPS-Induced Inflammation In Vitro

“…Palm kernel cake (PKC), a by-product of the mannan-rich palm oil industry [ 1 ], has received close attention in recent years as an unconventional feed resource. Treatment with enzymes and microorganisms can increase the nutritional value of PKC, primarily by reducing the amount of cellulose and mannan [ 2 ]. Numerous active substances are produced during the process, including volatile organic compounds (VOCs), such as ketones, aromatic hydrocarbons and short-chain fatty acids (SCFAs); microbial metabolites, such as amino acids, enzymes and antibiotics [ 3 , 4 ]; and oligosaccharides [ 5 ], thus promoting PKCs’ use in livestock, particularly in monogastric animals which cannot secrete various cellulases.…”