Iranian Journal of Fisheries Scienceshttp://hdl.handle.net/1834/178032024-03-28T15:55:37Z2024-03-28T15:55:37ZEffect of enriched rotifer (Brachionus plicatilis) with probiotic lactobacilli on growth, survival and resistance indicators of western white shrimp (Litopenaeus vannamei) larvaeNajmi, N.Yahyavi, M.Haghshenas, A.http://hdl.handle.net/1834/378962021-07-13T02:19:12Z2018-01-01T00:00:00ZEffect of enriched rotifer (Brachionus plicatilis) with probiotic lactobacilli on growth, survival and resistance indicators of western white shrimp (Litopenaeus vannamei) larvae
Najmi, N.; Yahyavi, M.; Haghshenas, A.
This study examined the effects of a commercial Lactobacillus probiotic on growth, survival and resistance of western white shrimp (Litopenaeus vannamei) larvae against salinity and formalin stresses in the Persian Gulf and Oman Sea Ecology Research Center. In this experiment, larvae were fed 6 times a day from mysis I (M1) step to post larvae 5 over 3 treatments including a control treatment C (without probiotic) and 2 experimental treatments namely A (having probiotic enriched rotifer) and B (having probiotic enriched rotifer and adding probiotic powder directly to the water). Larvae were stocked in 9 plastic tanks (20-liter) containing 10 L of seawater at a density of 50 larvae per liter. Three replicates were used for each treatment. At the end of the experimental period biometric larvae were studied under salinity and formalin stresses. Results showed that using probiotic bacteria had significant and positive effects on shrimp resistance, survival and growth (p<0.05) and that growth and survival rate of larvae fed with A and B treatments were significantly higher than that of the control group (p<0.05). The results of the stress tests also indicated that probiotic containing treatments (A and B) had significantly higher survival rates in salinity and formalin stresses than the control treatment (p<0.05). The highest survival rate and resistance were observed in treatment B which was not statistically different from that of treatment A (p>0.05). According to the results we may conclude that the use of probiotic powder is effective in increasing growth, survival and resistance rate of western white shrimp in the larval and post larval stages.
2018-01-01T00:00:00ZGrowth performance and digestive enzymes activities of Pacific white leg shrimp (Litopenaeus vannamei) juveniles fed dietary mixtures of four medicinal plantsAkbary, P.Shoghi, M.Fereidouni, M.S.http://hdl.handle.net/1834/378772021-07-13T02:05:43Z2017-01-01T00:00:00ZGrowth performance and digestive enzymes activities of Pacific white leg shrimp (Litopenaeus vannamei) juveniles fed dietary mixtures of four medicinal plants
Akbary, P.; Shoghi, M.; Fereidouni, M.S.
In present study the effect of dietary inclusion of equal amounts of four traditional medicines; Matricaria chamomilla L, Zataria multiflora L, Mentha piperita L and Terminalia chebulo L on growth performance and digestive enzymes activity in Litopenaeus vannamei was investigated. Two diets, including a control basal diet and an experimental diet with 30 g kg^-1 herbal mixture supplementation were prepared. Juveniles (with average weight of 2.63±0.11 g) were fed control and supplemented diet for 60 days. At the end of the experiment, shrimp fed the experimental diet showed significant increase in SGR, WGR, compared with those of the control group. Shrimp fed with herbal mixture supplementation revealed significantly higher lipase, protease and amylase activities as compared with the control group in 60 days. The results indicated that using equal mixtures of four medicinal plants in L. vannamei diets can improve the growth parameters and digestive enzyme activities.
2017-01-01T00:00:00ZEgg production and larval rearing of orange-spotted grouper (Epinephelus coioides) using reared broodstocks in Hormozgan Province, IranFourooghifard, H.Matinfar, A.Abdolalian, E.Moezzi, M.Roohani Ghadikolaee, K.Kamali, E.Allen, S.Zahedi, M.R.http://hdl.handle.net/1834/378642021-07-13T01:57:53Z2017-01-01T00:00:00ZEgg production and larval rearing of orange-spotted grouper (Epinephelus coioides) using reared broodstocks in Hormozgan Province, Iran
Fourooghifard, H.; Matinfar, A.; Abdolalian, E.; Moezzi, M.; Roohani Ghadikolaee, K.; Kamali, E.; Allen, S.; Zahedi, M.R.
Egg production of cultivated broodstocks of orange-spotted grouper, Epinephelus coioides and larvae rearing were surveyed in Iran from 2008 to 2012. Broodstocks were obtained by rearing of 7 wild juveniles (587.57 ± 132.63 g body weight) which were caught from the north of Persian Gulf in October 2008 and reared to December 2012. Captured juvenile fishes were fed using defrosted trash fish at a rate of 4-6 percent of body weight per day. Four-year-old fishes spawned spontaneously, when average weight of females and males were about 7020 ± 1277 g and 5128 ± 253g respectively. Effects of four temperature ranges (23-24, 26-27, 28-29 and 31-32 °C) and three tank size ( 40L, 300L and 2400L) on hatching and survival rates were examined. Eggs were stocked as a density of 25 Eggs L^-1. Effects of tank size on hatching rate and survival of larvae were assessed at 1, 5, 10, 20 and 30 days after hatching (DAH). The optimal temperature range for hatching was 28-29°C. No difference was observed among hatching rates of fish within the various tank sizes. Survival rates of larvae in 2400L fiber glass tanks until 30 days after hatching were significantly higher than the other tanks. Results indicate this species can be reproduced and reared in large numbers under normal rearing conditions and carefully controlled temperature.
2017-01-01T00:00:00ZEffect of copper sulfate on eradication of snail’s specie [sic], Oncomelania quadrasi, in aquatic habitats having Labeo rohita as a selected fishKashifa Naghma, W.Zehra, K.Nasir, H.N.Imtiaz, B.Sikender, H.http://hdl.handle.net/1834/378482021-07-12T03:27:11Z2017-01-01T00:00:00ZEffect of copper sulfate on eradication of snail’s specie [sic], Oncomelania quadrasi, in aquatic habitats having Labeo rohita as a selected fish
Kashifa Naghma, W.; Zehra, K.; Nasir, H.N.; Imtiaz, B.; Sikender, H.
The snail species, Oncomelania quadrasi, is found abundantly in fresh water fish ponds of Punjab. It is an intermediate carrier / host of various digenetic trematode parasites which causes many serious fish diseases in aquaculture ponds. The purpose of this study was targeted for controlling these snails in aquatic environments through chemical control strategies using copper sulfate as an eradicant. Mainly three trials were conducted to determine the effectiveness of copper sulfate against this snail sp. in laboratory aquaria conditions. Trial I involved the copper sulfate treatment sprayed directly for reductions of snails present on the upper moist layer of soil. Trial II was demonstrated for reductions of the snail densities buried under the depth of 8-16 inch layer of soil. Trial III was managed to study the copper sulfate toxicity on the survival of snails and Labeo rohita present together in the same aquatic media. The study indicated that copper sulfate was effective for eradication of the snails in all conditions whether present on the wet edges / moist soil surfaces, buried in the soils or present in the aquatic environment with fish, however, with varying degrees and intensities.
2017-01-01T00:00:00Z