Effect of extracted phycocyanin from Spirulina platensison growth parameters, colorations, digestive enzymes and body chemical compositions of Guppy fish (Poecilia reticulata)
Phycocyanin (PC) is one of the main pigments of algae Spirulina, which is used as a dietary supplement due to its high content of protein, vitamins, minerals and essential fatty acids. Using of extracted PC from Spirulina platensis was evaluated on growth, the body coloration (Skin and tissue), body chemical composition and digestive enzymes in guppy fish (Poeciliareticulata). 80 guppy fish with an average weight of 0.88±0.10 g were chosen. Feeding was performed on a daily basis for 3 times and fish were cultured for 45 days and period light was 12:12 (light: dark). Based on the result final weight, final length, SGR, WGR, LGR, PER and ADG has shown significant increasing when PC level was increased up to 0.15%. Phycocianin added to the diets made significantly to increase total pigments in guppy tissue. Protease activity was highly significant in different treatments (p<0.05) and extremely increased from zero up to 0.15% in fish fed with diets. PC made increase in total pigments in guppy fish when PC was between 0.05% to 0.15% and also the fish is brightly colored in skin. The present investigation reveal that, fish fed with 0.15% Spirulina PC elicited growth parameters and by increasing spirulina PC in diets of P.reticulata was increased digestive enzymes.
The effect of dietary oxymetholone on growth, survival and reproduction of guppy (Poecilia reticulata)
To check the ability of guppy fish (Poecilia reticulata) to receive high dietary doses of oxymetholone hormone and its effects on growth parameters, survival and reproduction, 300 fish at the age of 10 weeks, with an average weight of 0.38 ± 0.09 g were randomly assigned to 5 treatments and 3 replications in 15 glass aquaria (100 liters volume). Hormone levels were considered as 5 different dos...متن کامل
Growth in animals is controlled by genetic, environmental, and nutritional factors, including external factors (temperature, pressure, salinity, and light) in the evolution of cold-blooded animals. In this study, the effects of three different light treatments on the growth and survival rates of guppy larvae (Poecilia reticulata) were investigated. The larvae of this species with an average ini...متن کامل
Long-term exposure to bis(2-ethylhexyl)phthalate (DEHP) inhibits growth of guppy fish (Poecilia reticulata).
Bis(2-ethylhexyl)phthalate (DEHP) is a widely used plasticizer that is a commonly found contaminant of aquatic environments. However, little is known about the long-term effects of DEHP on fish development, as previous studies yielded conflicting results and mostly investigated the effects of concentrations higher than those found in natural habitats. We thus aimed to investigate the effects of...متن کامل
Social network theory is used to elicit details of the social structure of a population of free-ranging guppies, Poecilia reticulata. They were found to have a complex and highly structured social network, which exhibited characteristics consistent with the 'small world' phenomenon. Stable partner associations between individuals were observed, a finding that fulfils the basic prerequisite for ...متن کامل
Effect of waterborne copper oxide nanoparticles and copper ions on guppy (Poecilia reticulata): Bioaccumulation and histopathology
The aim of the present study was to investigate the effect of copper oxide nanoparticles (CuO-NPs) and copper ions (Cu++) on guppy (Poecilia reticulata), in order to assess Cu uptake in the gill, and histopathology of gill and intestinal organs in semi-static regimes for 10 days. Guppy fish were assigned into three groups; one control group, and two experimental groups receiving 20 µg/l of eith...متن کامل
Different with other fishes, the guppies (Poecilia reticulata) is ovoviviparity, which retain their fertilized eggs within the follicle throughout gestation. The synchronously growing diplotene oocytes store nutrients in droplets and yolk, before their maturation and fertilization. The lecithotrophic strategy of development entails the provisioning of embryos with resources from the maternal yo...متن کامل
دوره 6 شماره 1
صفحات 1- 8
تاریخ انتشار 2019-07
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