Nutrient utilization of Nile tilapia Oreochromis niloticus fed plant based low phosphorus diets supplemented with graded levels of different sources of microbial phytase

Liebert, F.; Portz, Leandro

doi:10.1016/j.aquaculture.2005.04.009

Cited by 128 publications

(140 citation statements)

References 32 publications

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“…The overall growth performance of rohu fi ngerlings, fed fermented sesame oilseed meal, incorporated diets in both cases were better in comparison to fi sh fed raw oilseed meal diet. The observation on weight gain in both cases i.e., phytase from fi sh gut bacteria Bacillus licheniformis LF1 and commercially available phytase Biophos-TS corroborates the fi ndings of Liebert and Portz (2005), who reported that different sources of microbial phytase similarly affected the growth in Nile tilapia, Oreochromis niloticus (Linnaeus, 1758). The differences in the growth performance recorded in this study agree with the report of Nwanna et al (2005) that common carp, Cyprinus carpio Linnaeus, 1758, reared on phytase treated diets showed a signifi cantly higher weight gain and feed conversion ratio in comparison to the diets without phytase.…”

Section: Discussionsupporting

confidence: 85%

Comparative efficacy of phytase from fish gut bacteria and a commercially available phytase in improving the nutritive value of sesame oilseed meal in formulated diets for fingerlings of rohu, Labeo rohita (Actinopterygii: Cypriniformes: Cyprinidae)

Roy¹

2016

Acta Ichthyol. Piscat.

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. 2016. Comparative effi cacy of phytase from fi sh gut bacteria and a commercially available phytase in improving the nutritive value of sesame oilseed meal in formulated diets for fi ngerlings of rohu, Labeo rohita (Actinopterygii: Cypriniformes: Cyprinidae). Acta Ichthyol. Piscat. 46 (1): 9-23.Background. Phytate (myo-inositol 1,2,3,4,5,6-hexakis-dihydrogen phosphate) is the main storage form of phosphorus (P) and up to 80% of the total P content in plants remains unavailable to fi sh due to lack of intestinal phytases for effi cient phytate hydrolysis. The inclusion of microbial phytase in the feed is an approach to increase phytate phosphorus bioavailability. In the presently reported study, a comparison of the effi cacy of phytase produced by fi sh gut bacterial strain, Bacillus licheniformis LF1 and a commercially available phytase, Biophos-TS in improving the nutritive value of sesame (Sesamum indicum) oilseed meal (SOM) was evaluated in the diet for fi ngerlings of rohu, Labeo rohita (Hamilton, 1822). Materials and methods. Eleven isonitrogenous (approximately 35% crude protein) and isocaloric (17.58 kJ · g -1 gross energy) experimental diets were formulated with the same basal diet containing raw sesame oilseed meal (D1) or oilseed meal pretreated with phytase from the fi sh gut bacterial strain, B. licheniformis LF1 (D2-D6) and commercially available phytase, Biophos-TS (D7-D11) at 10, 20, 30, 40, and 50 FTU · kg -1 and fed to rohu fi ngerlings (mean initial weight 1.85 ± 0.52 g) for 80 days. Results. Fermentation of oilseed meal signifi cantly reduced the crude fi bre content and anti-nutritional factors tannins and phytic acid, and enhanced mineral concentration. In terms of growth, feed conversion ratio, and protein effi ciency ratio, diets containing sesame oilseed meal pretreated with Biophos-TS at a concentration of 30 FTU · kg -1 and with strain LF1 at a concentration of 40 FTU · kg -1 resulted in a signifi cantly (P < 0.05) better performance of rohu fi ngerlings. The apparent digestibility of protein, lipid, ash and minerals was signifi cantly (P < 0.05) higher in fi sh fed diets D9 and D5 in comparison to those fed reference diet (RD). The crude protein, crude lipid, and ash contents of fi sh carcass were highest in fi sh fed diet D9, which was not signifi cantly (P < 0.05) different from those in the group of fi sh fed diet D5. Pretreatment of diets with phytase reduced faecal P levels. Conclusion.Comparison of the effi cacy of phytase produced by fi sh gut bacteria with commercially available phytase indicated no signifi cant difference in performance of rohu fi ngerlings in terms of growth and nutrient and mineral utilization. Keywords: growth performance, mineral utilization, phytase, plant ingredient, aquafeed, Indian major carp INTRODUCTIONUnlike most domesticated farm animals, the majority of fi sh species generally require higher levels of dietary protein for optimum growth. High quality fi sh meal, with amino acid profi le that matched the fi sh's requirement pattern is therefore, ...

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Section: Discussionsupporting

confidence: 85%

Comparative efficacy of phytase from fish gut bacteria and a commercially available phytase in improving the nutritive value of sesame oilseed meal in formulated diets for fingerlings of rohu, Labeo rohita (Actinopterygii: Cypriniformes: Cyprinidae)

Roy¹

2016

Acta Ichthyol. Piscat.

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“…However, phytase did enhance rainbow trout growth when included in soybean-based diets [23,24,26]. Dietary phytase supplementation in higher quality diets of fish species other than rainbow trout has generally had no positive effect on growth and feed conversion ratio [40,[42][43][44], except in common carp Cyprinus carpio [45,46] and Nile tilapia Oreochromis niloticus [47]. Although it was not measured in this study, phytase has been repeatedly shown to increase the availability of phosphorous in fish feeds containing plant (primarily soybean) ingredients [48][49][50][51][52].…”

Section: Discussionmentioning

confidence: 98%

Initial Observations on the Inclusion of High Protein Distillers Dried Grain into Rainbow Trout Diets

Barnes¹

2012

TOFISHSJ

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An initial investigation into the inclusion of high protein distillers dried grain with solubles (HPDDG) in juvenile rainbow trout Oncorhynchus mykiss diets was conducted during a 36-day feeding trial. Four experimental diets containing either 10% or 20% HPDDG with supplemental amino acids, and either with or without phytase, were compared to a fish-meal-based, non-HPDDG, diet. There was no significant difference among any of the diets in total weight gain, percent weight gain, feed conversion ratio, or percent mortality. There was also no significant difference in length, weight, condition factor, hepatosomatic index, viscerosomatic index, or any fish health parameter in fishes fed any of the diets. Fillet composition, as determined by crude protein, crude lipid, water, and ash were also not significantly different from fish reared on any of the diets. Estimated protein digestibility coefficients were significantly less in the fish receiving the diet void of HPDDG compared to any of the other diets. The addition of phytase had no effect on any rearing parameters. The results suggest that HPDDG, if supplemented with essential amino acids, may be included at concentrations of at least 20% (dry weight) in rainbow trout diets and that more detailed investigation into the use of HPDDG is warranted.

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“…Similar to swine and poultry, monogastric and agastric aquatic animals lack intestinal phytases for efficient phytate hydrolysis during digestion 79) , hence most phytate is excreted into the water which may cause algal growth 72) . Thus, phytase has been demonstrated to both increase the use of low-cost plantbased food in the aquaculture industry and maintain acceptable P levels in the water.…”

Section: Application Of Bacterial Phytases In Foodmentioning

confidence: 99%

Current and Future Biotechnological Applications of Bacterial Phytases and Phytase-Producing Bacteria

et al. 2008

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Phytases are a group of enzymes capable of releasing phosphate from phytate, one of the most abundant forms of organic phosphate in the natural environment. Phytases can be found in many organisms; in bacteria, they are particularly described in γ-proteobacteria. In recent years, bacterial phytases have been isolated, characterized and proposed as potential tools in biotechnology. Microbial phytases have been applied mainly to animal (swine and poultry) and human foodstuffs in order to improve mineral bioavailability and food processing. Here, we summarize the current knowledge of bacterial phytases and phytase-producing bacteria, as well as their potential biotechnological applications, including new fields poorly explored, such as fish nutrition, environmental protection and plant nutrition. Despite the recognized importance in biotechnology, information on bacterial phytases and phytase-producing bacteria is clearly limited and major efforts are required to improve the knowledge of phytases present in bacteria and their utilization.

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Nutrient utilization of Nile tilapia Oreochromis niloticus fed plant based low phosphorus diets supplemented with graded levels of different sources of microbial phytase

Cited by 128 publications

References 32 publications

Comparative efficacy of phytase from fish gut bacteria and a commercially available phytase in improving the nutritive value of sesame oilseed meal in formulated diets for fingerlings of rohu, Labeo rohita (Actinopterygii: Cypriniformes: Cyprinidae)

Comparative efficacy of phytase from fish gut bacteria and a commercially available phytase in improving the nutritive value of sesame oilseed meal in formulated diets for fingerlings of rohu, Labeo rohita (Actinopterygii: Cypriniformes: Cyprinidae)

Initial Observations on the Inclusion of High Protein Distillers Dried Grain into Rainbow Trout Diets

Current and Future Biotechnological Applications of Bacterial Phytases and Phytase-Producing Bacteria

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