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Effect of feed on the mineral composition of labeo rohita

Apparent digestibility coefficient of calcium and phosphorus The maximum calcium digestibility was The analysis of variance of digestibility of calcium was shown in Table III.

The digestibility of calcium of test diets remain significantly different from each other Table III. The citric acid and phytase significantly affected the digestibility of calcium.

  1. Dietary lipid source can influence the composition of fatty acids in muscle of hybrid tilapia [6].
  2. Larvae fed mixed algal diets.
  3. Anwar and Erfanullah, 1991. Thesis, Berhampur University, India pp.

The results also conform the synergistic effect of citric acid and phytase on calcium digestibility. The maximum phosphorus digestibility was The phosphorus digestibility was also significantly affected by citric acid and phytase as in the case of calcium. The analysis of variance of digestibility of phosphorus was shown in Table III. The phosphorus digestibility of all test diets were significantly different from each other Table III.

Body composition The proximate compositions of the whole body of L. The results present significant difference among dietary treatments Table IV.

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Citric acid and phytase affected the body composition of fish and there was also interaction effect of both on all the parameters studied ash, protein, fat, energy and dry matter.

Discussion In the present study citric acid and phytase significantly affected the digestibility of nutrients in L.

Acidification may decrease the discharge of phosphorus in feces which improve the environment of aquatic organisms Hernandez et al. Phytate phosphorus remain unavailable to fish owing to the absence of enzyme in stomach of fish NRC, as Phytate is the principal anti-nutritional factor in diets based on crops which binds minerals Satoh et al.

Sarhad Journal of Agriculture

Enzymatic breakdown of phytate by phytase may increase the retention and availability of phosphorus Cao et al. Citric acid remain important not only in terrestrial animal studies Liu et al. Higher apparent digestibility coefficient of calcium was observed in the present work. Acidification of diet has been reported in animal feed to chelate calcium and phosphorus and increases their solubility, availability and utilization in rainbow trout Vielma et al.

Phytase can improve the digestibility coefficient of calcium in fish but feed ingredients also influences the activity of phytase Bedford, So the supplementation of phytase in feed may increase the bio-availability of minerals Vielma et al.

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The dry matter content of L. Khaled and Cuvin-Aralar et al.

  1. The exact reason of different response among fish fed with excessive n-3 HUFA is not clear, but it may be due to differences in fish species, interaction with other nutrients, etc.
  2. Microbial phytase supplementation in rohu, Labeo rohita diet enhances growth performance and nutrient digestibility.
  3. Five isonitrogenous protein 19. Discussion In the present study citric acid and phytase significantly affected the digestibility of nutrients in L.
  4. Composition of experimental diets Composition of vitamin-mineral mixture.

In the present study there was increase in body dry matter of L. Similar results were observed by Sardar et al. These differences in results may be due to difference in experimental conditions, composition of diets, source of phytase and species of fish. There was significant interaction of phytase and citric acid in the present study with partial replacement of fish meal with sunflower meal in Labeo rohita diet. Similar results were obtained by Shah et al.

But Nezhad et al. It was suggested that this might be due to the none influencing behavior of citric acid on phytase activity to low P diets, or citric acid organic acid might had speedily metabolized in the body and negligibly effected the pH of intestine.

The results of the present study showed that acidification have significant effect on crude lipid contents of body composition of L. An increasing trend in body lipid was observed at 1.

Similar results were observed in poultry Park et al. There was an increasing trend of lipid contents in body of L. Similar results were obtained in O. The complex of phytate with lipid and other nutrients lower down its availability Debnath et al. Other studies by Sugiura et al. Acidification of diet by citric acid can significantly increase iron in whole body of fish Vielma et al.

Acidification of diet chelates minerals in rainbow trout and increases their solubility and mineral utilization is improved Vielma et al.

  • Phytase can hydrolyze phytic acid which increases minerals contents and result into increment in the body ash content Masumoto et al;
  • The aquatic organisms are influenced by certain essential hydrological factors such as air and water;
  • The results also conform the synergistic effect of citric acid and phytase on calcium digestibility;
  • All the test diets were formulated to supply all the essential nutrients required by rohu with different proportions of omega-3 fatty acids;
  • De Silva SS editor;
  • Arch Hydrobiol ,

Two factors affecting the results are; 1 acidification and solubilization and 2 chelation of cations. Citric acid crosses the brush border in intestine by mechanism of Na transport system Wolffram, Dietary phytase supplementation increased ash contents Zhu et al.

The increment in ash in body by phytase reveals that phytase had released minerals during hydrolysis of phytate.

Phytase can hydrolyze phytic acid which increases minerals contents and result into increment in the body ash content Masumoto et al. Statement of conflict of interest Authors have declared no conflict of interest. Official methods of analysis. Effect of acidification in a phytase sprayed sunflower meal based diet on growth and dietary nutrient digestibility performances of Labeo rohita Juveniles.

Microbial phytase supplementation in rohu, Labeo rohita diet enhances growth performance and nutrient digestibility. Interactions of microbial phytase, citric acid and crude protein level on mineral utilization by rohu, Labeo rohita Juveniles.

Dietary protein level, microbial phytase, citric acid and their interactions on bone mineralization of Labeo rohita Hamilton juveniles.