Effects of pretreatment with microbial phytase on phosphorous utilization and growth performance of Nile tilapia (Oreochromis niloticus)
TLDR
The results showed that diets pretreated with phytase gave better growth performance, feed conversion ratio and protein efficiency ratio of Nile tilapia compared with thephytase control diet and pretreatment control diet (P 0.05).Abstract:
This study was to assess effects of the pretreatment in allplant based diets with microbial phytase on phosphorous utilization and growth performance of Nile tilapia (Oreochromis niloticus). Pretreatment trials were conducted using phytase at graded doses to determine the optimal dose of phytase. Available phosphorus (P) levels increased significantly with the increased doses of phytase and the dose of 1000 U kg )1 was most efficient. Based on the pretreatment trials, plant based diets for Nile tilapia were formulated by pretreating with phytase at 1000 U kg )1 . Experimental diets were supplemented with graded levels of mono calcium phosphate (MCP) at 25, 18.75, 12.5, 6.25 and 0 g kg )1 diet. In addition, there were three controls: one phytase control, one inorganic P control and one pretreatment control. The results showed that diets pretreated with phytase gave better growth performance, feed conversion ratio and protein efficiency ratio of Nile tilapia compared with the phytase control diet and pretreatment control diet (P 0.05), which resulted in significantly better performance than those at 6.25 and 0 g kg )1 (P 0.05).read more
Citations
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Journal ArticleDOI
Phytate and phytase in fish nutrition
TL;DR: Effects of phytate on fish, dephytinisation processes, phytase and pathway forphytate degradation,phytase production systems, mode ofPhytase application, bioefficacy of phyllase, effects of Phytase on growth performance, nutrient utilization and aquatic environment pollution, and optimum dosage of phydase in fish diets are discussed.
Journal ArticleDOI
Supplementation of formulated diets for tilapia (Oreochromis niloticus) with selected exogenous enzymes: Overall performance and effects on intestinal histology and microbiota
Ayodeji A. Adeoye,Alexander Jaramillo-Torres,Simon W. Fox,Daniel L. Merrifield,Simon J. Davies +4 more
TL;DR: The supplementation of diets with phytase has the potential to enhance tilapia growth without detrimental impacts on intestinal health.
Journal ArticleDOI
Phytase-producing bacteria in the digestive tracts of some freshwater fish.
TL;DR: The highest phytase activity was observed in the bacterial strains LF1 and LH1 isolated from the fore and the hindgut regions of rohu respectively, and both the strains were identified as Bacillus licheniformis on the basis of phenotypic characteristics as well as 16S rDNA sequence analysis.
Journal ArticleDOI
Bioenergetics-Based Factorial Model to Determine Feed Requirement and Waste Output of Tilapia Produced under Commercial Conditions
TL;DR: The modified TGC models produced a better fit of the growth trajectory of the fish on the commercial farm across production stages compared with other growth models (specific growth rate, linear model).
References
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Journal ArticleDOI
Hydrolysis-Resistant Organic Matter as a Reference for Measurement of Fish Digestive Efficiency
TL;DR: In this paper, the authors found that hydrogenated resistant organic matter (HROM) was not assimilated by rainbow trout (Salmo gairdneri) or by three species of tilapia (Tilapia aurea, T. mossambica, and T. nilotica).
Journal ArticleDOI
Fitase na alimentacao da tilapia do Nilo (Oreochromis niloticus). Desempenho e digestibilidade
Wilson Massamitu Furuya,Giovani Sampaio Gonçalves,Valéria Rossetto Barriviera Furuya,Carmino Hayashi +3 more
TL;DR: In this paper, the effects of different levels of phytase (0, 500, 1500 and 3000 units of active PHytase [UFA]/kg diet) in the diets for Nile tilapia (8.88 ± 0.02 g).
Journal ArticleDOI
Apparent digestibility of crude protein and apparent availability of individual amino acids in tilapia (Oreochromis niloticus) fed phytase pretreated soybean meal diets
TL;DR: Dietary and available methionine (Met), and available lysine (Lys), decreased with increasing incorporation of phytase pretreated SBM, and reduced availability of Met and Lys from the phytases pretreated diets was likely due to removal ofphytates.
Journal ArticleDOI
The availability to Tilapia nilotica of phosphorus in white fish meal.
TL;DR: The results demonstrated that the availability for Tilapia of the phosphorus contained in the fis meal was around 65%, comparable to those in rainbow trout and chum salmon, thus the supplementation of the diets containing this fish meal with primary sodium phosphate resulted in no acceleration of the growth response of tilapia.
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