Effects of β-mannanase expressed by Pichia pastoris in corn–soybean meal diets on broiler performance, nutrient digestibility, energy utilization and immunoglobulin levels

Chen, Xiang; Chen, Yiqun; Li, Zhimin; Cao, Yunhe

doi:10.1016/j.anifeedsci.2010.05.001

Cited by 48 publications

(70 citation statements)

References 28 publications

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“…Therefore, the immune response was stimulated by anti-oxidative diet such as omega-3 fatty acid in old aged laying hen (Ebeid, 2011). The mannanase did not induce any influence on humoral immune response of old aged hen in this study, which is similar to the result of other poultry studies (Li et al, 2010;Zou et al, 2006). However, Zou et al (2006) reported an increase of serum IgM by dietary mannanase supplementation.…”

Section: Discussionsupporting

confidence: 80%

Effect of Dietary β-Mannanase Supplementation and Palm Kernel Meal Inclusion on Laying Performance and Egg Quality in 73 Weeks Old Hens

Lee¹,

Kim²,

Lee³

et al. 2013

Journal of Animal Science and Technology

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This study was conducted to evaluate the effect of dietary β-mannanase supplementation and palm kernel meal (PKM) inclusion (5%) on laying performance, egg quality and nutrient utilizability of laying hens with 73 weeks of age. A total of 240 Lohmann brown laying hens with average 77.5% egg production were randomly allocated with 60 hens per treatment, 4 replicates per treatment and 15 hens per replicate. Experimental design was a completely randomized design with 2 × 2 factorial arrangement, with the factors being (1) two levels of PKM (0 vs. 5%) and (2) with or without dietary β-mannanase (480 IU/kg of diet CTCzyme ® ) supplementation. All hens were housed in cages (35 cmW × 35 cmD × 40 cmH) with 2 hens per cage for six weeks feeding trial. Laying performance was recorded daily during feeding trial. Egg quality, nutrients utilizability and blood assays were done at the end of feeding trial. Egg production was improved (P<0.05) by both dietary PKM inclusion and β-mannanase combined supplementation. Either β-mannanase or PKM did not affect feed intakes and feed conversion ratio of all diets. Egg weight of hens fed diet containing 5% of PKM had heavier (P<0.05) eggs compared with hens fed without PKM. Albumen height was improved (P<0.05) by dietary mannanase supplementation. Crude fat utilization of 5% PKM diet was higher than that of no PKM diet regardless of β-mannanase supplementation. Both DM and total carbohydrate utilization were decreased (P<0.05) in hens fed 5% PKM diet. Serum IgG and yolk IgY contents of PKM groups were lower (P<0.05) than those of no PKM groups. This result showed that 5% PKM diet, independent of dietary β-mannanase supplementation, was able to improve egg production. In addition, dietary β-mannanase supplementation could be used for improving the albumen height of eggs.

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Section: Discussionsupporting

confidence: 80%

Effect of Dietary β-Mannanase Supplementation and Palm Kernel Meal Inclusion on Laying Performance and Egg Quality in 73 Weeks Old Hens

Lee¹,

Kim²,

Lee³

et al. 2013

Journal of Animal Science and Technology

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“…This was confirmed by studies in which the addition of β-mannanase to a broiler diet increased energy availability by at least 0.5 MJ ME/kg feed (Li et al, 2010) to 0.6 MJ ME/kg feed (McNaughten et al, 1998).…”

Section: Introductionsupporting

confidence: 57%

“…For instance, an enzyme preparation containing β-mannanase will improve hydrolysis of β-mannans, a group of closely related compounds in soybeans associated mainly with the hull and fibre fractions. The β-mannans are highly viscous (Odetallah et al, 2002;Li et al, 2010), which causes a partial blockage of receptor sites on intestinal surfaces, thereby decreasing the utilization of carbohydrates, resulting in poor FCR (Li et al, 2010).…”

Section: Raw Materials (% Inclusion)mentioning

confidence: 99%

Carbohydrase and protease supplementation increased performance of broilers fed maize-soybean-based diets with restricted metabolizable energy content

Plessis¹,

Rensburg²

2014

SA J. An. Sci.

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A trial was conducted to evaluate whether the addition of commercial enzyme preparations containing carbohydrases and a protease would increase the available metabolizable energy (ME) of maize-soya-based broiler diets. Seven thousand five hundred and sixty (7560) day-old Ross 788 chicks were randomly allocated to 60 pens (126 chicks per pen). The trial consisted of five dietary treatments, with 12 replicates per treatment. A negative control feed and three treatment feeds were formulated to contain a lower level of ME than a standard (positive control) feed. Two commercial enzyme preparations, one a mixture of amylase, xylanase and protease; and the other a β-mannanase product, were added separately or in combination to the treatment diets. Broiler performance was recorded over a 35-day period. Broilers fed the lower energy (negative control) diet performed significantly worse than all other treatments in terms of growth and feed conversion, but not mortality. The addition of the enzyme preparations to the energy-restricted diets significantly improved performance. Cumulative feed conversion ratio (FCR) on day 35 for the negative control birds was 12% higher than that of the positive control, while diets supplemented with single enzyme preparations resulted in 2.4% and 3.0% higher FCRs, respectively. Combining the two products caused significantly higher bodyweights and feed intakes than the positive control, while cumulative FCR was only 1.2% higher than for the positive control. A positive synergistic effect was evident when combining the two enzyme products. Performance gains in the enzyme-supplemented broilers were most pronounced during early growth.

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“…Similarly, mannanase has been shown to modulate immunity (Li et al, 2010) and positively affect performance (Zou et al, 2006) in broilers perhaps through production of MOS in situ . However care must be taken when reviewing the literature since in many cases the positive effects of MOS are demonstrated with material that is derived from yeast (Xiao et al, 2012; Yitbarek., 2012) which are not the same as those derived from cereals.…”

Section: Ameliorating the Anti-nutritive Effectmentioning

confidence: 99%

Multicarbohydrase Enzymes for Non-ruminants

O’Neill

Smith

Bedford

2014

Asian Australas. J. Anim. Sci

123

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The first purpose of this review is to outline some of the background information necessary to understand the mechanisms of action of fibre-degrading enzymes in non-ruminants. Secondly, the well-known and understood mechanisms are described, i) eliminating the nutrient encapsulating effect of the cell wall and ii) ameliorating viscosity problems associated with certain Non Starch Polysaccharides, particularly arabinoxylans and β-glucans. A third, indirect mechanism is then discussed: the activity of such enzymes in producing prebiotic oligosaccharides and promoting beneficial cecal fermentation. The literature contains a wealth of information on various non starch polysaccharide degrading enzyme (NSPase) preparations and this review aims to conclude by discussing this body of work, with reference to the above mechanisms. It is suggested that the way in which multi- versus single-component products are compared is often flawed and that some continuity should be employed in methods and terminology.

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Effects of β-mannanase expressed by Pichia pastoris in corn–soybean meal diets on broiler performance, nutrient digestibility, energy utilization and immunoglobulin levels

Cited by 48 publications

References 28 publications

Effect of Dietary β-Mannanase Supplementation and Palm Kernel Meal Inclusion on Laying Performance and Egg Quality in 73 Weeks Old Hens

Effect of Dietary β-Mannanase Supplementation and Palm Kernel Meal Inclusion on Laying Performance and Egg Quality in 73 Weeks Old Hens

Carbohydrase and protease supplementation increased performance of broilers fed maize-soybean-based diets with restricted metabolizable energy content

Multicarbohydrase Enzymes for Non-ruminants

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