Enzyme Supplementation of Broiler Feeds with Reduced Mineral and Energy Levels

Nunes, Jaqueline Oliveira; Abreu, Ricardo Duarte; Brito, Jerônimo Ávito Gonçalves de; Silva, R. F. da; Oliveira, Lennon Santos; Jesus, Nadja Azevedo de

doi:10.1590/1516-635xspecialissuenutrition-poultryfeedingadditives015-022

Cited by 9 publications

(9 citation statements)

References 18 publications

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“…As previously discussed by Nunes et al (2015), the use of enzyme supplementation improved the performance of broilers by reducing the amount of nutrients and energy required. Moftakharzadeh et al (2019) indicated that the use of enzymatic supplementation increased energy utilization from wheat and soybean based diets.…”

Section: Introductionmentioning

confidence: 74%

Adding wheat and rapeseed meal to corn-soy diets affects intestinal morphology and nutrient digestibility in broilers

Amirahmadi¹,

Safamehr²,

Nobakht³

et al. 2021

SA J. An. Sci.

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This study was conducted to investigate the effects of thyme essential oil and enzyme supplementation on rations with two different energy (wheat or corn) and protein resources (soy or rapeseed meals) on gut morphology and protein digestibility of broiler chickens. Three hundred eighty-four male Ross-308 broiler chickens were used with a 23 factorial arrangement with treatments according to a completely randomized design. The morphological examinations of the intestine were carried out on 1-cm long excised segments from duodenum, jejunum and ileum. Adding wheat to the diet increased small intestine length in birds compared to other feedstuffs (P <0.05). Duodenum crypt depth and jejunum villi length were also higher in groups fed with rations containing wheat (P <0.05). Groups that received thyme essential oil and enzyme supplementation had increased length of the duodenum (P <0.05). However, the two- and three-factor interaction effects were not significant. Protein digestibility was not affected by treatment (P >0.05). Feeding wheat to broiler chickens may increase the surface area for nutrient absorption in the small intestine as compensation for the anti-nutritive activity of non-starch polysaccharides in wheat-based diets. Wheat based diets are expected to be acceptable for broilers when supplemented with appropriate enzymes or thyme essential oil.

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Section: Introductionmentioning

confidence: 74%

Adding wheat and rapeseed meal to corn-soy diets affects intestinal morphology and nutrient digestibility in broilers

Amirahmadi¹,

Safamehr²,

Nobakht³

et al. 2021

SA J. An. Sci.

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“…Higher feed intake, higher body weight gain and better feed conversion ratios were found in the quails for the PC diet, compared to the NC diet, with and without protease supplementation. According to Nunes et al (2015) the nutrient and energy reductions of the NC treatment effectively allow for the statistical performance differentiation from the PC diet. In the present study, it was also observed that the reduction of crude protein and amino acids in the NC diets, compared to the PC diets, allowed effective differentiation of the variation in the performance of the quails.…”

Section: Parametersmentioning

confidence: 99%

“…The protease under analysis did not improve digestion and further absorption of protein, since it was not specific for the degradation of keratin; consequently, quails fed on diets including protease did not have the highest body weight gain. Nunes et al (2015) reported that, among other reasons, the enzyme supplementation may not have been efficient enough to allow for similar performance as that obtained with the standard diet (PC), due to the higher lipid (oil) level of the diet, which has less impact on the heat increment compared with carbohydrates and proteins. These results are in agreement with those of our study.…”

Section: Parametersmentioning

confidence: 99%

Feather meal supplemented with protease in diets for meat-type quails

Diana

Pinheiro

Ramos

et al. 2019

SCA

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The objective of this study was to evaluate the effect of the inclusion of feather meal (FM) in diets supplemented with protease for meat-type quails, on performance from eight to 21 days and from eight to 35 days of age and on carcass yield cuts and economic profitability from eight to 35 days of age. A total of 360 male, meat-type quails, were allotted to a completely randomized design, in a factorial 3 x 3 arrangement (three diets and three FM levels of inclusion), with four replicates of 10 quails per experimental unit. The diets evaluated were positive control (PC) + 0% FM, PC + 5% FM, PC + 10% FM, negative control (NC) + 0% FM, NC + 5% FM, NC + 10% FM, NC + 0% FM + protease, NC + 5% FM + protease and NC + 10% FM + protease. The NC diet was formulated with a reduction in crude protein and amino acids, compared to the PC diet. There was an effect (p < 0.05) of the inclusion of FM in diets on feed intake, weight gain and feed conversion ratio, from eight to 21 and from eight to 35 days of age. There was a significant effect (p < 0.05) of FM inclusion on the live weight of 35-day-old quails. The inclusion of FM impairs meat-type quails’ performance at all ages evaluated. NC diets, with and without protease, worsen the performance of birds compared to PC diets. Better economic profitability is observed for up to 5% inclusion of feather meal in positive control diets.

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“…xilanase, glucanase, celulase, mananase e pectinase foram avaliadas em dietas de frangos de corte de linhagem industrial que contêm níveis elevados de polissacarídeos não Brazilian Journal of Development, Curitiba, v.7, n.8, p. 84829-84847 aug. 2021 amiláceos (PNA's) e verificaram melhoria na metabolizabilidade dos nutrientes e no desempenho das aves (ABDOLLAHI et al, 2016;BARBOSA et al, 2012;NUNES et al, 2015).…”

Section: Introductionunclassified