Effects of 500 and 1000 FTU/kg phytase supplementation of maize-based diets with two tiers of nutrient specifications on performance of broiler chickens

Liu, S.Y.; Bold, R. M.; Plumstead, P. W.; Selle, Peter H.

doi:10.1016/j.anifeedsci.2015.06.002

Cited by 19 publications

(11 citation statements)

References 24 publications

(24 reference statements)

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“…A dose-dependent response to supplemental microbial phytase in broilers has been described by several recent studies, including in low-phosphorus diets ( Qian et al., 1997 ; Liu et al., 2015 ; Dersjant-Li et al., 2018 ). The magnitude of the dose-response effect can be influenced by the Ca to total P ratio ( Dersjant-Li et al., 2018 ).…”

Section: Discussionmentioning

confidence: 91%

A novel consensus bacterial 6-phytase variant completely replaced inorganic phosphate in broiler diets, maintaining growth performance and bone quality: data from two independent trials

et al. 2021

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Total replacement of dietary inorganic phosphate ( Pi ) by a novel consensus bacterial 6-phytase variant ( PhyG ) in phytate-rich diets (>0.3% phytate-P) was investigated in 2 trials using growth performance and bone quality as outcome measures. Both trials utilized a completely randomized design with 5 dietary treatments across 4 phases: starter (0–10 d), grower (10–21 d), finisher 1 (21–35 d), and finisher 2 (35–42 d). Treatments comprised a nutritionally adequate positive control ( PC ) diet containing monocalcium phosphate and 4 experimental diets (IPF1, IPF2, IPF3, and IPF4), all containing no added Pi and reduced in Ca by 0.2 to 0.3% units vs. PC. IPF1contained PhyG at 1,000 FTU/kg (all phases); IPF2 contained PhyG at 1,000 FTU/kg (all phases) and was additionally reduced in digestible AA, ME, and sodium (−0.2 to −0.4% points, −74 kcal/kg, –0.04% points, respectively, vs. PC); IPF3 contained PhyG at 3,000 FTU/kg in starter, 2,000 FTU/kg in grower, and 1,000 FTU/kg in finisher phases; and IPF4 contained xylanase (2,000 U/kg) and PhyG (2,000 FTU/kg in starter, 1,500 FTU/kg in grower, and 1,000 FTU/kg in finisher phases) and was additionally reduced in ME (–71 kcal/kg vs. PC). Ross 308 broilers were used (trial 1: n = 1,200 mixed sex; 24 birds per pen × 10 replicates; trial 2: n = 1,300 males; 26 birds × 10 replicates). During all phases in both trials, all IPF treatments maintained or improved BW, ADG, ADFI, FCR and BW-corrected FCRc and bone quality parameters vs. PC. vs. PC, treatment IPF3 increased ADG during starter phase (+10.8%) and reduced overall FCRc (−12 points, P < 0.05) in Trial 1, and increased overall ADG (+4.4%), day 35 and day 42 BW (+3.5%, +4.9%), and reduced overall FCRc (−11 points) in Trial 2 ( P < 0.05). IPF4 produced equivalent performance to IPF3 (both trials). These are the first data to demonstrate total replacement of Pi by microbial phytase during an entire growth cycle in broiler diets.

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Section: Discussionmentioning

confidence: 91%

A novel consensus bacterial 6-phytase variant completely replaced inorganic phosphate in broiler diets, maintaining growth performance and bone quality: data from two independent trials

et al. 2021

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“…It was not possible to verify the nutritional inadequacy of the NC diets in terms of growth performance, as it would not have been ethical to administer the NC diets as standalone diets in such a large-scale setting. However, several smaller-scale studies have previously shown that moderate and comparable reductions in energy, minerals (Ca, P) and/ or AA in similar corn-soybean meal-based diets, reduced broiler performance (BWG and FCR) compared with a PC diet (Amerah et al, 2014;Dersjant-Li et al, 2018;Liu et al, 2015). In particular, the study by Liu et al (2015) demonstrated significant reductions in BWG from 2.721 kg/bird in the PC to 2.525 kg/bird (-7.20%) in the NC diet over a 40 d feeding period, and increased FCR from 1.551 in the PC to 1.605 (+3.48%) in the NC diets.…”

Section: Discussionmentioning

confidence: 99%

Buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial setting

Dersjant-Li

Belt

Kwakernaak

et al. 2020

JAAN

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The effect of down specifying nutrients in diets supplemented with Buttiauxella spp. phytase was studied in a commercial trial. Three treatments were tested with five replicate groups, each containing 700, one-day-old straight run Ross 308 broilers. Birds were fed pelleted diets from days 0-42 in four phases: starter (days 0-10); grower (days 11-21); finisher 1 (days 22-35) and finisher 2 (days 36-42). A nutritionally adequate, unsupplemented, positive control (PC) diet based on wheat, corn and soybean meal was compared against two down specified, negative control (NC) diets containing Buttiauxella phytase supplemented at 500 or 1000 FTU/kg. The reduction level was 0.134 and 0.159% unit for digestible phosphorus, 0.164 and 0.189% unit for calcium, 0.03 and 0.04% unit for sodium, 0.283 and 0.309 MJ/kg for nitrogen corrected apparent metabolizable energy in all phases and variable digestible amino acids in different phases, respectively for the diets containing the phytase at 500 and 1000 FTU/kg. An unsupplemented NC diet was not included, as it would have caused welfare and health issues. Weight gain and mortality-corrected feed conversion ratio for birds receiving phytase at either inclusion levels were equivalent to the PC group. Feed intake was increased by 500 FTU/kg phytase (P<0.05) during 0-21 d vs PC. Including 1000 FTU/kg phytase reduced water intake vs PC at 0-42 d and water-to-feed intake ratios, after the starter phase (P<0.05). Carcass yield in birds supplemented with either phytase level was not different from PC. Tibia ash was unaffected by treatment. Estimated feed costs (inclusive of phytase) were lower in supplemented than un-supplemented (PC) diets, by 10.0 to 13.7 €/ton diet. The trial demonstrated that reducing nutrient specifications of diets supplemented with Buttiauxella phytase maintained growth performance, lowered feed costs, with production benefits maximised at inclusion levels of 1000 FTU/kg.

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“…The fact that phytase had provided increase in ADC of energy in sorghum and corn, in which there was 8.5% increase, demonstrates the effect of phytic acid in forming complexes and inhibiting nutrient absorption. Liu, Bold, Plumstead, and Selle (2015). claim that the phytase acts on the phytic acid molecule and promotes the dissociation of cations, such as sodium, resulting in greater efficiency in the absorption of molecules dependent on the sodium-potassium pump mechanism, like glucose, which is used as a source of energy in the metabolism and is primarily derived from energy food in the diet through the starch molecule.…”

Section: Resultsmentioning

confidence: 99%

<b>Effect of phytase on digestibility of corn, sorghum and wheat bran by silver catfish (<i>Rhamdia voulezi</i>)

Signor¹,

Lewandowski²,

Silva³

et al. 2016

Acta Sci. Anim. Sci.

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ABSTRACT. This study aimed to evaluate the digestibility of plant energetic ingredients, corn, sorghum and wheat bran, with and without phytase supplementation, in silver catfish (Rhamdia voulezi). The experimental design was completely randomized, represented by eight treatments, which consisted of the development of a reference diet and a test diet for each ingredient evaluated (corn, sorghum and wheat bran), with and without supplemental phytase. Diets were formulated so as to contain 70% reference feed and 30% test ingredient. The digestibility coefficients of dry matter and crude protein were significantly influenced only in relation to the evaluated ingredients. Phytase influenced the digestibility coefficients of energy and phosphorus, with interaction between food and the enzyme addition. The interaction between these two factors shows that the phytase efficiency is dependent on the type of vegetable ingredient used in the diet. The results suggest the supplementation of phytase for a higher nutrient digestibility of corn, sorghum and wheat bran by silver catifish (R. voulezi).Keywords: feeding, enzyme, plant energetic ingredients, silver catfish.Efeito da fitase sobre a digestibilidade do milho, sorgo e farelo de trigo pelo jundiá (Rhamdia voulezi) RESUMO. O objetivo do presente estudo foi avaliar a digestibilidade dos ingredientes energéticos vegetais, milho, sorgo e farelo de trigo, com e sem suplementação de fitase pelo jundiá (Rhamdia voulezi). O delineamento experimental foi inteiramente casualizado, representado por oito tratamentos, os quais consistiram na elaboração de uma dieta-referência e uma dieta-teste para cada ingrediente avaliado (milho, sorgo e farelo de trigo), com e sem a suplementação de fitase. As dietas foram fabricadas de modo que continham 70% da ração referência e 30% do ingrediente teste. Os coeficientes de digestibilidade da matéria seca e proteína bruta foram influenciados significativamente somente em relação aos ingredientes avaliados. A fitase influenciou nos coeficientes de digestibilidade da energia e do fósforo, onde também foi observada a interação entre os alimentos e a inclusão da enzima. A interação entre esses dois fatores demonstra que a eficiência da fitase é dependente do tipo de ingrediente vegetal utilizado na dieta. Pelos resultados obtidos sugere-se a suplementação de fitase visando maior digestibilidade dos nutrientes, do milho, sorgo e farelo de trigo pelo jundiá (R. voulezi).Palavras-chave: alimentação, enzima, ingredientes energéticos vegetais, jundiá.

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Effects of 500 and 1000 FTU/kg phytase supplementation of maize-based diets with two tiers of nutrient specifications on performance of broiler chickens

Cited by 19 publications

References 24 publications

A novel consensus bacterial 6-phytase variant completely replaced inorganic phosphate in broiler diets, maintaining growth performance and bone quality: data from two independent trials

A novel consensus bacterial 6-phytase variant completely replaced inorganic phosphate in broiler diets, maintaining growth performance and bone quality: data from two independent trials

Buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial setting

<b>Effect of phytase on digestibility of corn, sorghum and wheat bran by silver catfish (<i>Rhamdia voulezi</i>)

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