Effect of microbial phytase on apparent nutrient digestibility of barley, canola meal, wheat and wheat middlings, measured in vivo using rainbow trout (Oncorhynchus mykiss)
155 citations recorded by the source corpus.
Microbial phytase (Natuphos 5000G) was supplemented into barley, canola meal, wheat and wheat middlings at 500 FTU kg(-1) diet to test the effectiveness of the phytase on digestibility of crude protein (CP), gross energy (GE) and minerals for rainbow trout. A total of 180 rainbow trout (initial mean body weight 223.8 +/- 17.9 g) were stocked into ten 40-L fibreglass digestibility tanks with 18 fish per tank. Duplicate tanks were assigned to a reference diet and a single tank was assigned randomly to each of the eight diets made from these four ingredients supplemented with and without phytase. The collection of faeces lasted for 2 weeks. Faeces collected in each week represented a replicate and they were analysed separately. The mean apparent digestibility coefficients (average of four ingredients) in phytase supplemented and nonsupplemented ingredients were: CP, 97.3% and 96.5%; GE, 62.8% and 53.1%; calcium (Ca), 38.3% and -5.3%; magnesium (Mg), 72.4% and 50.3%; manganese (Mn), 31.0% and -4.2%; total-phosphorus (total-P), 71.1% and 47.6%; phytate-phosphorus (phytate-P), 87.5% and 22.3%; copper (Cu), 38.3% and 26.4%; potassium (K), 97.1% and 97.0%; sulphur (S), 90.2% and 88.6%; zinc (Zn), 12.3% and -16.6%. A two-tailed t-test indicated that phytase supplementation significantly (P < 0.05) improved the digestibility of Ca, Mg, Mn, total-P, phytate-P, and GE. The efficacy of phytase on nutrient digestibility also depended on the type of ingredient as measured in rainbow trout.
Subfields: Animal Science and Zoology, Aquatic Science, Physiology
View Paper: https://www.semanticscholar.org/paper/0101cccc77b6b0b7ed624adfb0a68bbf8930d840
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Animal Science and Zoology
In Aquatic Science
In Physiology
Citations in the corpus
- Effects of phytase pretreatment of soybean meal and phytase-sprayed in diets on growth, apparent digestibility coefficient and nutrient excretion of rainbow trout (Oncorhynchus mykiss Walbaum) (2009, background): “In plant protein sources, soybean meal is used in animal feeds due to its well-balanced amino acid profile and relatively high crude protein level (Cheng and Hardy 2002).”
- Expanding the utilization of sustainable plant products in aquafeeds: a review (2007, background): “Treatment with phytase increases total phosphorus digestibilityof canola meal to rainbow trout from 12% to 42% (Cheng & Hardy 2002).”
- Developments in biochemical aspects and biotechnological applications of microbial phytases (2011, background): “The treatment of fish feed with phytase was found to improve protein digestibility and retention in fishes (Cheryan, 1980; Storebakken et al., 1998; Papatryphon et al., 1999; Boling et al., 2001; Cheng and Hardy, 2002; Usmani and Jafri, 2002; Vielma et al., 2004; Sajjadi and Carter, 2004; Debnath et”
- Application of microbial phytase in fish feed (2007, background): “28% monocalcium phosphate [63]; also phytase replacement can avoid the toxin compromise of fluorin brought by inorganic-P input, thus enhancing the security of feed.”