نتایج جستجو برای: fingerlings

تعداد نتایج: 1133  

2013
S.

This paper examines the challenges facing fish farming development in western kenya. Sample survey of 192 farmers representing the fish farming community in the area was used. The study result revealed that the high prices of fish feed, declining fish prices and lack of finance were found to be the top ranking serious challenges facing fish farmers in that area. A Cross-sectional and longitudin...

2013
Eric J. Wagner Randall W. Oplinger Matthew Bartley

The effect of penicillin-G on Flavobacterium psychrophilum, the cause of bacterial coldwater disease, was evaluated in 15 min and overnight exposures. Separate tests evaluated the effect of increasing doses of penicillin-G to rainbow trout Oncorhynchus mykiss eggs, fingerlings, and adults. Rainbow trout eggs were exposed for 1 h to penicillin doses of 0, 250, 500, 1000, 10,000, 50,000, or 100,0...

Bagher Mojazi Amiri Kheyrollah Khosravi Katuli, Saeed Yelghi

Artificial fertilizers and mainly organophosphate herbicide are used by farmers to enhance their crop and control pests. In order to investigate the effects of Pretilachlore, fingerlings of caspian roach were exposed to a range of concentrations of toxin close to those of estuary for 96 h. Due to movement of these fingerlings in a gradient of salinity from freshwater to brackishwater some physi...

A. Arshadi E Effatpanah E. Zakipour Rahimabadi, M. Akbari

 A 6-week feeding experiments were carried out to determine the effects of different levels of dietary betaine on growth performance, food efficiency and survival rate of pike perch which has a critical period during transition feeding. Fingerlings of pike perch were fed with live food (treatment A), without betaine added to biomar (treatment B), 1% betaine added to biomar (treatment C) and 2% ...

The aim of the present study was to evaluate the effects of dietary Guava (Psidium guajava) leaves powder (GLP) on growth parameters, feed utilization as well as some serum parameters of common carp (Cyprinus carpio) fingerlings. Common carp fingerlings (18.88±0.27 g) were supplied and stocked in twelve fiberglass tanks at density of 14 fish per tank. Fish were fed experimental diets contains 0...

Journal: :University Journal of Zoology, Rajshahi University 1970

Journal: :Journal of Experimental Biology and Agricultural Sciences 2022

This study aimed to determine the effect of a commercial diet's protein level on fry-to-fingerling stage. Thirty days-old fries having initial length and weight 18.25 ± 0.15 mm fish-1 0.036 0.50 g respectively have been used in this study. Diet three levels i.e. 30% (trial 1 as control), 35% 2), 40% 3), 45% 4), respectively, evaluate protein, each trial has repeated times. During study, stockin...

Journal: :Aquatic research 2021

The study investigated the technical efficiency of female catfish growers in Delta State, Nigeria. Data have been obtained using questionnaires from 112 farmers who randomly selected. Descriptive statistics, cost and return analysis as well stochastic model used data. results showed that mean age, farming experience household size fish were 42 years old, 8 6 persons respectively. Most participa...

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