The Role of ß-Mannanase (Hemicell) in Improving Poultry Productivity, Health and Environment

Abstract

The poultry nutritionists constantly attempt to identify and alleviate the factors responsible for adverse effects on nutrient utilization and production performance in avian species, which are necessary for successful productivity of poultry. Enhanced feed utilization can reduce levels of some nutrients in the diet with concomitant mitigation in nutrient excretion into the environment, reduction of eutrophication and acidification potentials of excreta. Commercial enzymes have been used to improve feed efficiency and utilization in poultry. Among many anti-nutritional factors, the existence of ß-mannans in poultry feed ingredients including soybean and other leguminous seeds has been associated with negative effects on nutrient digestibility and high intestinal viscosity that adversely affects innate immunity and microbial proliferation in poultry gut. The ß-mannanase (a commercial product named as Hemicell) can hydrolyze ß-mannan, an anti-nutritional fiber present in many poultry feed ingredients. Supplement of ß-mannanase to ß-mannan-rich diets may boost the population of intestinal beneficial bacteria, increase the digestibility of mannans, enhance the immunity, suppresses the growth of harmful intestinal bacteria, enhance the digestion and absorption of nutrients in intestinal tracts and reduce the environmental pollution due to poultry excreta. Supplementation of β-mannanase at the level of 200 and 400 mg/kg in poultry diets has positively improved blood glucose and anabolic hormone homeostasis, FCR, digestible energy, and digestible amino acids. This review describes the promising beneficial effects of β-mannanase, which may be used in the poultry feed industry for economic benefits. Another objective of this review is to explore the underlying mechanisms of ß-mannanase that can influence growth, digestion coefficients of nutrients, health and metabolism of nutrients in poultry birds and also the knowledge regarding the useful application of this feed enzyme in the commercial poultry feed industry.

Cultivation of Mushrooms and Their Lignocellulolytic Enzyme Production Through the Utilization of Agro-Industrial Waste

“…β-Mannanases are widely applied to randomly hydrolyze the β-1,4-mannopyranoside linkage of mannan-based polysaccharides in many industries. [195] Sawdust Pleurotus ostreatus 9 U/gds [195] Sugarcane bagasse Ganoderma lucidum 33 U/gds [196] Tomato pomace Pleurotus ostreatus 9 U/gds [197] Trametes versicolor 50 U/gds [197] Jerusalem artichoke stalk Schizophyllum commune 106 U/gds [198] Oak leaves Figure 8 [207][208][209][210][211]. The biodegradation of xylan requires the cooperation of xylanases, β-xylosidase, α-l-arabinofuranosidase, α-glucuronidase, and acetylxylanases [181,182].…”

“…The treatment of copra meal rich in β-mannan with mannanase has been reported to reduce the population of Salmonella and Escherichia coli, increase the level of metabolizable energy and improve the nutrient digestibility in broilers [285]. Olaniyi et al [207] reported that the treatment of cassava peels and corn cobs with mannanase increased the degradation of the complex carbohydrate fractions in the samples and resulted in increasing the amount of crude protein and certain mineral contents. Kim et al [273] reported that the supplementation of β-mannanase for diet feeds does not mitigate the heat stress of aged laying hens raised under hot climatic conditions.…”

“…Arabinanases are a group of hydrolytic enzymes that include endo-arabinanases (EC 3.2.1.99), arabinosidases (EC 3.2.1.55), and α- L -arabinofuranosidase. These work synergistically to generate l -arabinose from arabinan as is shown in Figure 8 [ 207 , 208 , 209 , 210 , 211 ]. The biodegradation of xylan requires the cooperation of xylanases, β-xylosidase, α- l -arabinofuranosidase, α-glucuronidase, and acetylxylanases [ 181 , 182 ].…”

Characterization of β-mannanase extracted from a novel Streptomyces species Alg-S25 immobilized on chitosan nanoparticles

“…Applying as an additive for the effective removal of sticky gum stains from fabrics [20]. Fodder Improving the palatability and digestibility of livestock feeds [21][22][23][24].…”

Effect of β-mannanase enzyme supplementation on the morphofunctional state of broiler chickens’ immunocompetent organs

“…The manufacturer says that these products are completely safe and can be used by animal nutritionists, their main active ingredient is the β-mannanase enzyme, which affects the anti-nutrients of βmannan. β-Mannanase (Hemicell) is a natural product of microbial fermentation obtained from genetically unmodified strains of microorganisms (Rychen et al, 2017;Genedy et al, 2018;Saeed et al, 2019).…”