Evaluation of nutrient equivalency of microbial phytase in hens in late lay given maize–soybean or distiller's dried grains with solubles (DDGS) diets

Abstract

1. An experiment was conducted with 360 Lohmann LSL-Classic White Leghorn layers (64 weeks old) to evaluate the effects of supplementation of microbial phytase on production, egg quality, bone, selected manure parameters and feed costs. 2. Experimental diets were formulated as follows: (1) maize-soybean (CS), (2) CS+300 units of phytase (FTU)/kg diet which was formulated to recoup only calcium and available phosphorus equivalency for phytase (CS+PHYCa+P), (3) CS+300 FTU/kg diet which was formulated to recoup total nutrient equivalency for phytase (CS+PHYtotal), (4) CS+100 g/kg distiller's dried grains with solubles (DDGS), (5) DDGS+300 FTU/kg diet which was formulated to recoup only calcium and available phosphorus equivalency for phytase (DDGS+PHYCa+P), or (6) DDGS+300 FTU/kg diet which was formulated to recoup total nutrient equivalency for phytase (DDGS+PHYtotal). 3. Each dietary treatment was assigned to 4 replicate groups with 3 cages and 5 hens per cage. The hens were provided with feed and water ad libitum. The experiment lasted for 8 weeks. 4. CS+PHYCa+P, CS+PHYtotal, DDGS+PHYCa+P and DDGS+PHYtotal diets supplemented with phytase provided similar percentage egg production, egg weight, egg mass, exterior egg quality, initial and final body weight compared with phytase-free diets. 5. However, supplementation of phytase to the experimental diets and calculation of the total nutrient equivalency for enzyme caused increased feed intake and decreased feed conversion ratio and Haugh unit. 6. No differences in manure dry matter, crude ash, total nitrogen, tibia crude ash, calcium and phosphorus contents were found among the experimental diets. On the other hand, manure total phosphorus content was significantly decreased in the DDGS diet and diets supplemented with phytase in comparison to the CS diet. 7. It was concluded that the addition of microbial phytase to the CS-based diets or diets with DDGS of hens in late lay and using Ca and available P equivalency of enzyme in feed; formulation may provide an economic benefit and decrease the amount of phytate P excretion in the manure without compromising production and egg quality parameters.

Distillers dried grains with soluble and enzyme inclusion in the diet effects broilers performance, intestinal health, and microbiota composition

“…One of the objectives to adding exogenous enzymes to poultry feed is to hydrolyze the fraction that chickens cannot efficiently digest, as the fiber and phytate. Nonstarch polysaccharide degrading enzymes ( Liu et al, 2011 ; Romero et al, 2013 ; Campasino et al, 2015 ) and phytase ( Olukosi et al, 2010 ; Deniz et al, 2013 ) have been shown to improve nutrients digestibility in corn DDGS diets. However, in the present work, we added a multicarbohydrase (xylanase, β-glucanase, ABF) and phytase complex to the diets and despite the positive performance effects the MCPC inclusion did not affect nutrient digestibility.…”

Микробиота Кишечника И Продуктивные Каче-Ства Бройлеров При Использовании Фитазы Для По-Вышения Усвояемости Фосфора И Питательных Веществ Из Комбикормов

“…В литературе отмечают неодинаковую эффективность разных препаратов фитаз (28)(29)(30)(31). Обобщая результаты своего эксперимента, мы можем констатировать, что оба отечественных фитазных препарата (Фидбест-Р и Берзайм-Р) при добавлении в комбикорма для бройлеров позволяют снизить дозу неорганического фосфора в рационе, повышая при этом продуктивность птицы.…”

Efficacy of feed enzymes in pig and poultry diets containing distillers dried grains with solubles: a review

“…The authors observed increased P digestibility and bone mineralisation in chickens when a diet with 30% DDGS was supplemented with phytase. A positive effect of phytase in laying hens fed a diet with 10% cDDGS was reflected in improved FI and FCR, as well as a decrease in P content in manure (Deniz et al., ). However, Koksal et al.…”