Associação de carboidrase e fitase em dietas valorizadas para poedeiras semipesadas

Silva, Leandro Moreira; Geraldo, Adriano; Filho, Javer Alves Vieira; Machado, Luiz Carlos; Brito, Jerônimo Ávito Gonçalves de; Bertechini, Antônio Gilberto

doi:10.4025/actascianimsci.v34i3.12735

Cited by 10 publications

(7 citation statements)

References 15 publications

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“…Vieira Filho et al (2015) observed an increase in the laying rate by adding 500 g ton-1 of protease (100 Ug-1) to diets of Isa Brown commercial layers at 44 weeks old with reduced nutritional levels. Similarly, Silva et al (2012) observed a similar effect, reporting that birds fed diets with nutritional reduction and without supplementation of enzymes presented worse rates of feed conversion, confirming the positive effect of the inclusion of enzymes in diets of laying hens. From this study, it can be concluded that the inclusion of protease B improved the digestibility of nutrients and, consequently, increased the availability of amino acids for absorption, thus improving protein synthesis.…”

Section: Protease Supplementation In the Diet Of Light Laying Henssupporting

confidence: 55%

Protease Supplementation in the Diet of Light Laying Hens

Barbosa

Corrêa

et al. 2022

Braz. J. Poult. Sci.

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This work was developed to evaluate the impact of the addition of proteases on the performance characteristics, egg quality, relative weight of digestive organs, and intestinal morphometry of laying hens. 390 Hy Line W36® hens were allocated into five treatments and six replicates with 13 animals. The treatments were: 1) Control (standard formulation), 2) Negative control A -NCA (nutritional reduction according to protease A matrix), 3) Negative control B -NCB (nutritional reduction according to protease B matrix), 4) NCA+protease A (0.250 g/kg of feed) and 5) NCB+protease B (0.125 g/kg of feed). Hens fed the NCA, NCB, and NCA+protease A diets showed reductions in feed intake and egg mass. The addition of protease B provided better results for egg production in both percentage and per dozen as compared to the group fed with the NCA+protease A diets. The hens subjected to diets NCA and NCB showed eggs with a reduced eggshell and thickness percentage. However, supplementation with proteases A and B improved these parameters to values similar to the controls. There was no significant effect of the treatments on the relative weight of the liver, proventricle, gizzard, pancreas, and small intestine. However, the addition of protease A resulted in a decreased value for the relative weight of the large intestine. The jejunum and ileum crypt depths were, respectively, smaller in hens fed the control diet in relation to the NCB diet and the NCA and NCB diets. As it can be concluded, Protease B supplementation provided the best performance results.

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Section: Protease Supplementation In the Diet Of Light Laying Henssupporting

confidence: 55%

Protease Supplementation in the Diet of Light Laying Hens

Barbosa

Corrêa

et al. 2022

Braz. J. Poult. Sci.

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“…These data agree with those of Ribeiro et al (2015), who found no differences in the specific weight of eggshells, an element corresponding to the specific gravity evaluated in the present study. Lima et al (2011), who worked with Japanese quail, and Silva et al (2012), who worked with semiheavy laying hens, also found no differences in the evaluation of shell weight, shell thickness or egg specific gravity when hens were supplemented with various levels of phytase. The composition of the eggshell is mostly calcium carbonate; therefore, the mineral that exerts the greatest influence on its composition and quality is calcium.…”

Section: Resultsmentioning

confidence: 95%

The effect of dietary phytase and various available phosphorus levels on performance and egg quality in Japanese quail

Rossetto

Barreta

Migliorini

et al. 2019

Rev. bras. saúde prod. anim.

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SUMMARY Birds show poor utilization of phytic phosphorus in their diets because of the lack of endogenous enzymes to digest phosphorus and make it bioavailable. Therefore, the objective of this study was to evaluate phytase supplementation in the diets of laying quails. Eighty quails were used in a completely randomized experimental design with five treatments and four replicates of four birds each. The treatments were as follows: 0.35% Pd; 0.20% Pd; 0.20% Pd + 500FTUs of phytase; 0.09% Pd; 0.09% Pd + 500 FTUs of phytase. The birds were housed in metallic batteries during a trial period of 21 days, for evaluation of egg production, egg weight, feed intake and feed conversion. After being collected, the eggs were sent to the nutrition laboratory of the department of zootechnics of the CEO/Udesc, where analyses of albumin, yolk and shell quality were performed. The results were subjected to analysis of variance, and the differences between the averages were compared using the Tukey test at 5% of significance. No differences (P> 0.05) were observed in terms of performance and egg quality parameters. We conclude that the inclusion of phytase in the diet of laying quails can be accomplished without compromising the performance and quality of the eggs. Additionally, 0.09% of 22 disponible phosphorus can be used to grant adequate performance for 21 days.

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“…3 P AD = 35.38915 + 0.06966X -0.00039189X 2 (R 2 = 0.56). Silva et al (2012) studied the association of 100 mg.kg -1 carbohydrase and 30 mg.kg -1 phytase in feed for commercial brown-egg layers using a diet without enzymes and test diets enriched with energy and nutrients according to the nutrient matrix and of enzymes did not find a significant effect of treatments on the performance of birds. The authors attributed this effect to the good metabolic utilization of the diets containing enzyme supplementation.…”

Section: Discussionmentioning

confidence: 99%

Enzyme complex at different levels in diets with enriched ingredients for commercial laying hens

et al. 2019

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The objective of this study was to evaluate levels of inclusion of an enzyme complex (EC) in corn-and soybean meal-based diets for laying hens on the digestibility of nutrients and energy. A metabolism trial was conducted using 75 Dekalb Brown laying hens at 26 weeks of age, which were distributed into five treatments with five replicates in a completely randomized design. The ingredients used in the diets received an additional (enriched) 3% methionine, lysine, cysteine, threonine, tryptophan, and metabolizable energy and 33.3% phosphorus. Treatments consisted of diets including 0, 150, 200, 250, or 300 mg.kg-1 EC. We determined apparent metabolizable energy (AME); nitrogen-corrected AME (AMEn); apparent metabolizability coefficients of dry matter (DM AM), crude protein (CP AM), gross energy (GE AM), and phosphorus (P AM); digestible crude protein (CP D); and intake, retention, and excretion of phosphorus. No effects of EC levels were detected on the metabolizable energy values or digestibility coefficients, except for CP AM , which showed a quadratic response (maximum coefficient at 89.0 mg.kg-1 EC). A quadratic effect was also observed for CP D (minimum at 115 mg.kg-1 EC), P excretion (maximum at 173.2 mg.kg-1 EC), and P retention (maximum at 122.4 mg.kg-1 EC) when EC was used. The use of the EC in corn-and soybean meal-based diets for laying hens improves their ileal digestibility of protein and apparent digestibility of phosphorus. However, EC addition to the diets does not affect AME, AMEn, or their metabolizability coefficients.

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Associação de carboidrase e fitase em dietas valorizadas para poedeiras semipesadas

Cited by 10 publications

References 15 publications

Protease Supplementation in the Diet of Light Laying Hens

Protease Supplementation in the Diet of Light Laying Hens

The effect of dietary phytase and various available phosphorus levels on performance and egg quality in Japanese quail

Enzyme complex at different levels in diets with enriched ingredients for commercial laying hens

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