A Novel Bacterial 6-Phytase Improves Productive Performance, Precaecal Digestibility of Phosphorus, and Bone Mineralization in Laying Hens Fed a Corn-Soybean Meal Diet Low in Calcium and Available Phosphorus
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Autor/a
Jlali, Maamer
Hincelin, Clémentine
Rougier, Tania
Cozannet, Pierre
Ozbek, Sarper
Ceccantini, Marcio
Yavuz, Baris
Preynat, Aurélie
Devillard, Estelle
Fecha de publicación
2023-08-05ISSN
1346-7395
Resumen
Exogenous phytases are commonly added to low-phosphorus and low-calcium diets to improve P availability and reduce P excretion by poultry. This study investigated the effect of supplementation with a novel bacterial 6-phytase on egg production, egg quality, bone mineralization, and precaecal digestibility of P in laying hens fed corn-soybean meal-based diets.
A total of 576 Hy-Line brown laying hens were used in a completely randomized block design at 25–45 weeks of age (woa).
The three treatments included a positive control (PC) adequate-nutrient diet with 2840 kcal metabolizable energy/kg, 0.77%
digestible lysine, 3.5% Ca, and 0.30% available P (avP); a negative control (NC) diet with 0.16% points less Ca and avP; and
an NC diet supplemented with a novel bacterial 6-phytase at 300 phytase units/kg diet. Hen performance and the percentage
of damaged eggs were measured every 4 weeks. Body weight, precaecal digestibility of P, and bone parameters at 45 woa
were also measured. The reduction in avP and Ca in the NC diet did not compromise performance or egg quality. However,
it decreased (P < 0.001) body weight, tibial dry matter, tibial ash and P content, and precaecal digestibility of P. Importantly,
all these parameters were significantly improved (P < 0.001) and essentially restored to the levels measured in PC diet-fed
hens upon supplementation with phytase. In summary, the present study demonstrates that the new bacterial 6-phytase could
effectively counteract the negative effects of P and Ca deficiencies on body weight, bone mineralization, and P availability,
thereby supporting high productivity without compromising the welfare of laying hens.
Tipo de documento
Artículo
Versión del documento
Versión publicada
Lengua
Inglés
Materias (CDU)
636 - Explotación y cría de animales. Cría del ganado y de animales domésticos
Páginas
8
Publicado por
Japan Poultry Science Association
Publicado en
Journal of Poultry Science
Citación
Jlali, Maamer, Clémentine Hincelin, Maria Francesch, Tania Rougier, Pierre Cozannet, Sarper Ozbek, Marcio Ceccantini, Baris Yavuz, Aurélie Preynat, and Estelle Devillard. 2023. “A Novel Bacterial 6-Phytase Improves Productive Performance, Precaecal Digestibility of Phosphorus, and Bone Mineralization in Laying Hens Fed a Corn-Soybean Meal Diet Low in Calcium and Available Phosphorus.” The Journal of Poultry Science. Japan Poultry Science Association 60 (2):2023019. doi:10.2141/jpsa.2023019
Program
Nutrició Animal
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