Article
Agriculture, Dairy & Animal Science
R. Kriseldi, C. L. Walk, M. R. Bedford, W. A. Dozier
Summary: The experiment demonstrated that supplementing phytase up to 40,500 FTU/kg can significantly reduce phytate concentrations in the gizzard and ileal digesta contents of broilers, leading to increased plasma inositol concentration.
Article
Agriculture, Dairy & Animal Science
R. Kriseldi, C. L. Walk, M. R. Bedford, W. A. Dozier
Summary: The experiment showed that the addition of 40,500 FTU/kg of phytase significantly improved the broiler's BW gain, reduced feed conversion, and affected carcass and breast meat weights. In contrast, inositol supplementation did not offer additional benefits compared to phytase supplementation.
Article
Fisheries
David Edward Terrey, Daniel Arana Braidi, Robert Serwata
Summary: The addition of a novel phytase to diets for Atlantic salmon showed significant improvements in growth, feed conversion ratio (FCR) and protein efficiency. The phytase supplementation increased the digestibility and retention of phytate and phosphorus, while reducing phosphorus losses in feces and increasing metabolic losses. This study highlights the effectiveness of phytase in reducing effluent wastes from plant meal-based diets for salmon.
AQUACULTURE INTERNATIONAL
(2023)
Article
Agriculture, Dairy & Animal Science
L. Marchal, A. Bello, E. B. Sobotik, G. Archer, Y. Dersjant-Li
Summary: The experiments showed that all IPF treatments maintained or improved growth performance and bone quality parameters compared to the positive control diet throughout all phases in both trials. Treatment IPF3 demonstrated significant improvements in growth performance and feed conversion ratio in Trial 1 and Trial 2, while IPF4 showed equivalent performance to IPF3 in both trials. This study provides the first data to show total replacement of inorganic phosphate with microbial phytase in broiler diets throughout an entire growth cycle.
Article
Biotechnology & Applied Microbiology
Belen Infanzon, Kevin R. Herrmann, Isabell Hofmann, Sabine Willbold, Anna Joelle Ruff, Ulrich Schwaneberg
Summary: Phytase blend of two enzymes showed additive effects on phytate hydrolysis, leading to rapid phosphate release and reduced total phosphorous content. The blend achieved higher yields compared to individual enzymes and showed potential for animal feeding and green phosphate production from renewable resources.
ENZYME AND MICROBIAL TECHNOLOGY
(2022)
Review
Agriculture, Multidisciplinary
Vera Sommerfeld, Regiane R. Santos
Summary: The positive effects of phytases on the environment, animal welfare, and animal feed costs have led to continuous development and improvement in the non-ruminant feed market. In vitro assays can help evaluate phytase enzymes and reduce the number of in vivo experiments, though they cannot fully replace them. Additionally, in vitro assays have the potential to rank feed enzymes and serve as screening tools.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)
Article
Agriculture, Dairy & Animal Science
Yueming Dersjant-Li, Ivonne Kok, Edwin Westreicher-Kristen, Ruben Garcia-Gonzalez, Alessandro Mereu, Trine Christensen, Leon Marchal
Summary: This study investigated the effect of a biosynthetic bacterial 6-phytase on the digestibility and excretion of crude protein, phosphorus, and phytate-P in midlactating dairy cows. The results showed that the addition of different doses of phytase improved the digestibility of key nutrients and reduced fecal excretion in a dose-dependent manner.
JOURNAL OF ANIMAL SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
Q. Zhang, C. L. Walk, A. J. Cowieson, K. Stamatopoulos, J. L. Wu, J. O. B. Sorbara
Summary: This study evaluated the efficacy of a novel phytase in terms of phytate hydrolysis and the digestibility of phosphorus and calcium in broiler chickens fed low and high phytate diets. The results showed that the phytase effectively hydrolyzed phytate and increased digestible phosphorus and calcium. The response to dietary phytate varied in terms of age and the specific nutrient being evaluated.
ANIMAL FEED SCIENCE AND TECHNOLOGY
(2024)
Review
Agriculture, Multidisciplinary
Hanna Philippi, Vera Sommerfeld, Wilhelm Windisch, Oluyinka Abiona Olukosi, Alessandra Monteiro, Markus Rodehutscord
Summary: Phytase supplementation is becoming important in animal nutrition due to its impact on phosphorus digestibility and the growing relevance of phosphorus for sustainable production. This review focuses on the interactions of zinc with phytate and phytase in the digestive tract of poultry and pigs, emphasizing the effects of zinc supplementation on phytase efficacy and phosphorus digestibility. In vitro studies show the inhibitory effect of zinc on phytase efficacy, but there is limited and inconsistent data from in vivo studies, possibly due to various factors and differences in methodology.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Agriculture, Dairy & Animal Science
Markus Rodehutscord, Vera Sommerfeld, C. Roselina Angel, Douglas R. Korver
Summary: The objective of this contribution is to summarize the optimal concentration of nonphytate phosphorus (NPP) in feed for laying hens from scientific literature. The data suggests that the NPP concentration in feed should not exceed 2.2 g NPP/kg without the use of phytase, as it shows no positive effect on performance and eggshell. The addition of phytase to the feed can reduce this value, but precise values of reduction cannot be calculated due to insufficient data.
Article
Agriculture, Dairy & Animal Science
Megan E. Nelson, Su A. Lee, Yueming Dersjant-Li, Janet Remus, Hans H. Stein
Summary: The experiment demonstrated that as the level of phytase in the diets increased, the total tract digestibility of phosphorus in pigs increased, but not all of the absorbed phosphorus was retained due to a lack of calcium. The dietary concentration of phosphorus did not affect the basal endogenous loss of calcium, but increasing concentrations of microbial phytase reduced this loss.
JOURNAL OF ANIMAL SCIENCE
(2022)
Article
Agronomy
Alan E. Richardson, Timothy S. George, Maarten Hens, Emmanuel Delhaize, Peter R. Ryan, Richard J. Simpson, Peter J. Hocking
Summary: Organic anions can mobilize soil organic phosphorus, increasing its bioavailability. This has important implications for understanding phosphorus dynamics in natural and managed ecosystems, as well as improving phosphorus acquisition efficiency in agricultural plants.
Article
Agriculture, Dairy & Animal Science
O. O. Babatunde, A. Bello, Y. Dersjant-Li, O. Adeola
Summary: Increasing levels of phytate P (PP) reduce growth performance and nutrient utilization in broiler chickens, while supplementation of phytase positively impacts the responses of broiler chickens during the first 11 days post hatching.
Article
Agriculture, Dairy & Animal Science
R. Kriseldi, J. A. Johnson, C. L. Walk, M. R. Bedford, W. A. Dozier
Summary: Adding 1,200 FTU/kg phytase reduced IP6 concentration in gizzard contents and ileal digesta while increasing inositol concentrations. However, this did not result in increased plasma inositol concentration, warranting further investigation.
Article
Agriculture, Dairy & Animal Science
Jose R. Hernandez, Joseph P. Gulizia, John B. Adkins, Martha S. Rueda, Samuel Haruna, Wilmer J. Pacheco, Kevin M. Downs
Summary: With the increasing demand for poultry products and rising prices of raw materials, strategies to improve nutrient utilization and reduce feeding costs are essential. One common strategy is the dietary supplementation of phytase, which helps in the breakdown of phytate, a form of phosphorus found in seeds. This study evaluated the effects of combining different forms of phytase on broiler performance and phosphorus excretion. The results showed no significant advantage in combining phytase forms, suggesting that further research is needed.
Editorial Material
Biotechnology & Applied Microbiology
Paul Wai-Kei Tsang, Alan Pak-Kin Wong, Han-Sung Jung, Wing-Ping Fong
JOURNAL OF ANTIBIOTICS
(2014)
Article
Multidisciplinary Sciences
Paul Wai-Kei Tsang, H. M. H. N. Bandara, Wing-Ping Fong
Article
Multidisciplinary Sciences
Paul Wai-Kei Tsang, Alan Pak-Kin Wong, Hai-Ping Yang, Ngai-For Li
Article
Multidisciplinary Sciences
Paul Wai-Kei Tsang, Wing-Ping Fong, Lakshman Perera Samaranayake
Article
Biochemistry & Molecular Biology
Paul Wai-Kei Tsang, Kin-Sing Wong, Jennifer Ka-Man Chu
Meeting Abstract
Dermatology
P. W. K. Tsang, W. P. Fong