Amylase utilization for the extrusion of dog diets

Carciofí, Aulus Cavalieri; Palagiano, Clara; Sá, Fabiano César; Martins, Maristela Santini; Gonçalves, Karina Nogueira Venturelli; Bazolli, Rodrigo Sousa; Souza, Danilo Ferreira de; Vasconcellos, Ricardo Souza

doi:10.1016/j.anifeedsci.2012.08.017

Cited by 5 publications

(4 citation statements)

References 6 publications

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“…The reduction in electricity cost verified for the production of diet ENZ2 can be attributed to the addition of α‐amylase, but this topic was extensively discussed in a previous publication (Carciofi et al., ). Briefly, α‐amylase breaks amylose chains reducing the water absorption capacity and the viscosity of the dough that becomes more fluid and is transported by the extruder screw with less energy consumption.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, the possible formation of these complexes makes the measurement of reducing sugar inadequate to study enzyme activity during the extrusion process, and other alternative methods need to be developed. The reduction in electricity cost verified for the production of diet ENZ2 can be attributed to the addition of a-amylase, but this topic was extensively discussed in a previous publication (Carciofi et al, 2012). Briefly, a-amylase breaks amylose chains reducing the water absorption capacity and the viscosity of the dough that becomes more fluid and is transported by the extruder screw with less energy consumption.…”

Section: Discussionmentioning

confidence: 99%

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Enzyme use in kibble diets formulated with wheat bran for dogs: effects on processing and digestibility

Sá

Vasconcellos

Brunetto

et al. 2013

Animal Physiology Nutrition

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SummaryRecently, there is an interest in technologies that favour the use of coproducts for animal nutrition. The effect of adding two enzyme mixtures in diets for dogs formulated with wheat bran (WB) was evaluated. Two foods with similar compositions were formulated: negative control (NC; without WB) and test diet (25% of WB). The test diet was divided into four treatments: without enzyme (positive control), enzyme mixture 1 (ENZ1; added before extrusion b-glucanase, xylanase, cellulase, glucoamylase, phytase); enzyme mixture 2 (ENZ2; added before extrusion the ENZ1 more a-amylase); enzyme mixture 2 added after the extrusion (ENZ2ex). ENZ1 and ENZ2 were used to evaluate the enzyme effect on extruder pre-conditioner (processing additive) and ENZ2ex to evaluate the effect of enzyme supplementation for the animal. Digestibility was measured through total collection of faeces and urine. The experiment followed a randomized block design with five treatments (diets) and six dogs per diet, totalling 30 dogs (7.0 AE 1.2 years old and 11.0 AE 2.2 kg of body weight). Data were submitted to analysis of variance and means compared by Tukey's test and orthogonal contrasts (p < 0.05). Reducing sugars showed an important reduction after extrusion, suggesting the formation of carbohydrate complexes. The apparent total tract digestibility (ATTD) of dry matter, organic matter, crude protein, acid-hydrolysed fat and energy was higher in NC than in diets with WB (p < 0.001), without effects of enzyme additions. WB diets resulted in higher faecal production and concentration of short-chain fatty acids (SCFA) and reduced pH and ammonia concentration (p < 0.01), with no effect of enzyme addition. The enzyme addition did not result in improved digestibility of a diet high in non-starch polysaccharides; however, only ATTD was measured and nutrient fermentation in the large intestine may have interfered with the results obtained. WB modified fermentation product formation in the colon of dogs.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Enzyme use in kibble diets formulated with wheat bran for dogs: effects on processing and digestibility

Sá

Vasconcellos

Brunetto

et al. 2013

Animal Physiology Nutrition

View full text Add to dashboard Cite

show abstract

“…The type of processing that dog feed has inactivates the enzymatic activity; therefore, it is necessary to superficially apply enzymes, finding freeze-dried enzymes on the market, which must be added to the feed. One of the parameters evaluated has been digestibility, where the results do not show significant changes when amylase has been added, which does not increase starch digestion with respect to the control diets [69][70][71]. The use of proteases has also not shown effects on protein digestibility, which may be due to the type of protease used, the low concentrations of enzymes and their low specificity [72].…”

Section: Enzymes In Dog's Feedsmentioning

confidence: 99%

“…The use of amylases during the extrusion process in the production of feed for dogs has been evaluated, showing that they do not interfere with the final texture of the feed, the gelatinization of the starch, the digestibility of the nutrients nor the palatability of the feed, but it does increase production in extrusion and a possible reduction in electrical energy use, but its use must be evaluated in various feed extrusion and formulation systems to determine the optimal balance between enzyme cost and increased feed productivity and energy costs savings during extrusion [71].…”

Section: Enzymes In Dog's Feedsmentioning

confidence: 99%

Exogenous Enzymes as Zootechnical Additives in Animal Feed: A Review

et al. 2021

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Enzymes are widely used in the food industry. Their use as a supplement to the raw material for animal feed is a current research topic. Although there are several studies on the application of enzyme additives in the animal feed industry, it is necessary to search for new enzymes, as well as to utilize bioinformatics tools for the design of specific enzymes that work in certain environmental conditions and substrates. This will allow the improvement of the productive parameters in animals, reducing costs and making the processes more efficient. Technological needs have considered these catalysts as essential in many industrial sectors and research is constantly being carried out to optimize their use in those processes. This review describes the enzymes used in animal nutrition, their mode of action, their production and new sources of production as well as studies on different animal models to evaluate their effect on the productive performance intended for the production of animal feed.

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Advances in conversion of natural biopolymers: A reactive extrusion (REX)–enzyme-combined strategy for starch/protein-based food processing

Campanella

et al. 2020

Trends in Food Science & Technology

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Amylase utilization for the extrusion of dog diets

Cited by 5 publications

References 6 publications

Enzyme use in kibble diets formulated with wheat bran for dogs: effects on processing and digestibility

Enzyme use in kibble diets formulated with wheat bran for dogs: effects on processing and digestibility

Exogenous Enzymes as Zootechnical Additives in Animal Feed: A Review

Advances in conversion of natural biopolymers: A reactive extrusion (REX)–enzyme-combined strategy for starch/protein-based food processing

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