A Novel Bacterial 6-Phytase Improves Growth Performance, Tibia Mineralization and Precaecal Digestibility of Phosphorus in Broilers: Data from Four Independent Performance Trials
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Author
Jlali, Maamer
Hincelin, Clémentine
Gracia, Marta I.
Khattak, Farina
Rougier, Tania
Cozannet, Pierre
Cano López, Guillermo
Ceccantini, Marcio
Yavuz, Baris
Ozbek, Sarper
Preynat, Aurélie
Devillard, Estelle
Publication date
2023-07-27ISSN
2077-0472
Abstract
A series of four broiler performance studies were conducted in different facilities to investigate the efficacy of a novel bacterial 6-phytase added at 500 FTU/kg diet on growth performance,
bone mineralization and precaecal digestibility of phosphorus (pcdP) in broilers fed diets deficient in
available P (avP) and calcium (Ca). The experimental design was the same for all studies, with each
having three treatments: positive control (PC) diet formulated to meet or exceed the requirements of
birds, negative control (NC) diet similarly reduced by 0.15% points in avP and Ca compared to the PC
diet, and the NC diet supplemented with phytase (PHY) at 500 FTU/kg diet from 1 to 35 days of age.
Body weight (BW) and feed intake were measured at 21 and 35 days of age, and average daily gain
(ADG), average daily feed intake (ADFI), feed conversion ratio (FCR), BW gain-corrected-FCR (cFCR),
mortality and European performance efficiency factor (EPEF) were calculated. Tibia dry matter, tibia
ash content and pcd of P were measured at 21 days of age in all experiments. The analysis of the
data from the four experiments showed that compared with birds fed the adequate-nutrient diet,
birds fed the NC diet resulted in a decrease (p < 0.05) in BW, ADG, ADFI and EPEF by 6.4, 6.3, 5.9
and 7.1%, respectively, and an increase in (p = 0.02) cFCR by 2.0%. The tibia dry matter and tibia
ash content of these birds were also reduced (p < 0.001) by 3.8 and 4.0% points, respectively. PHY
diets improved (p < 0.05) BW, ADG, ADFI, EPEF and cFCR by 8.0, 8.3, 7.3, 10.6 and 2.8%, respectively.
Phytase addition at 500 FTU/kg diet also increased (p < 0.001) the tibia dry matter and tibia ash
content by 3.5 and 4.2% points, respectively. The pcd of P was improved (p < 0.001) by 11.1 and 11.3%
points, in comparison with NC and PC diets, respectively, when phytase was added. These performance parameters and tibia mineralization obtained with a diet supplemented with phytase were
comparable to or better than the PC diet. The results demonstrated that avP and Ca could be lowered
similarly by 0.15% points in broilers diets by using the new bacterial 6-phytase at 500 FTU/kg diet.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
636 - Animal husbandry and breeding in general. Livestock rearing. Breeding of domestic animals
Pages
14
Publisher
MDPI
Is part of
Agriculture
Citation
Jlali, Maamer, Clémentine Hincelin, Marta I. Gracia, Farina Khattak, Maria Francesch, Tania Rougier, and Pierre Cozannet et al. 2023. "A Novel Bacterial 6-Phytase Improves Growth Performance, Tibia Mineralization And Precaecal Digestibility Of Phosphorus In Broilers: Data From Four Independent Performance Trials". Agriculture 13 (8): 1507. https://www.mdpi.com/2077-0472/13/8/1507.
Program
Nutrició Animal
This item appears in the following Collection(s)
- ARTICLES CIENTÍFICS [2689]
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