نتایج جستجو برای: fish pond

تعداد نتایج: 109840  

Journal: :شیلات 0
علیرضا نیسی . کارشناسی ارشد تکثیر و پرورش آبزیان، دانشکدة منابع طبیعی دانشگاه تهران غلامرضا رفیعی . استاد گروه شیلات، دانشکدة منابع طبیعی دانشگاه تهران محمدعلی نعمت اللهی . دانشیار گروه شیلات، دانشکدة منابع طبیعی دانشگاه تهران سید هادی رضوی . استاد گروه علوم صنایع غذایی، دانشکدة مهندسی بیوسیستم دانشگاه تهران

in an eight-week time period, the implications of pediococcus acidilactici, as a probiotic, were examined on growth index and the activity of gastric enzymes of aequidens rivulatus (green terror) (0.388±0.0021) in a completely randomized system. the fishes were input into nine oval-shaped ponds of 120 liters capacity with the density of about 60 pieces per pond, and fed twice a day. this study ...

Journal: :Quantitative science studies 2021

Abstract This study compares publisher ratings to the visibility and impact of individual books, based on a 2017 data set from three Nordic performance-based research funding systems (PRFS) (Denmark, Norway, Finland). Although there are Journal Impact Factors (JIFs) for journals, is no similar indicator book publishers. National lists used instead account general “quality” leading institutional...

2006
M Belal Hossain S Khatun R K Adhikary M Rahman M Nurul Azim Belal Hossain

Research Paper Freshwater fish farming has become a promising and gainful methodology to attain self-sufficiency in food sector and also to create diverse livelihood opportunities of rural people in Bangladesh. Information on socioeconomic framework of the fish farmers forms a good base for successful implementation of developmental program of the economically backward sector. The present study...

2017
Miguel Morgado-Santos Sara Carona Luís Vicente Maria João Collares-Pereira

Androgenesis among vertebrates is considered a rare phenomenon, with some cases reported so far, but linked to experiments involving gamete manipulation (artificial androgenesis). Herein, we report the first empirical evidence of the natural occurrence of spontaneous androgenesis in a vertebrate, the Squalius alburnoides allopolyploid complex. A genetically screened random sample of a natural p...

Journal: :Water environment research : a research publication of the Water Environment Federation 2009
Patrick E Wiley Kristine J Brenneman Arne E Jacobson

Current methods to remove algae from a liquid medium are energy intensive and expensive. This study characterized algae contained within a wastewater oxidation pond and sought to identify a more efficient harvesting technique. Analysis of oxidation pond wastewater revealed that algae, consisting primarily of Chlorella and Scenedesmus, composed approximately 80% of the solids inventory during th...

2010
Aaron D. Geheber Caleb D. McMahan Kyle R. Piller

Five specimens of the non-native three spot gourami (Osphronemidae: Trichogaster trichopterus) were collected from a small pond near the northern coast of Jamaica in June 2009. The collection represents the first documentation of this species in Jamaica. Origin of the introduction is not known. Herein, we discuss the occurrence of this species in Jamaica and possible threats posed to the island...

2012
Ashwani Kumar Dubey

From the last decade the pond has been suffering from the resource of water due to decline rain fall, variable climate, and geologic conditions. Thus, so many of areas of the India suffer from severe water shortage like Chhatarpur. Ichthyodiversity increases the economic success of the fisheries pond and implies that the area has become more efficient. A fish are not only useful as source of fo...

B. H. Koo D. H. Kim D. W Kim J. Yu S. W. Park,

A disease outbreak occurred in June 2012 among mud loach cultured on pond farms in Jangseong-gun, Jeollanam-do, Korea. Mortality rates reached up to 1.2% in the farm per day. Typical clinical signs were bleeding ulcer at the middle portion of head and haemorrhagic erosion of the operculum. Based on biochemical characteristics, the causative bacterium isolated from diseased fish was identified a...

2013
M. H. Li EDWIN H. ROBINSON MENGHE H. LI Thad Cochran Brian Bosworth Edwin H. Robinson E. H. Robinson

Animal protein, generally fish meal, has traditionally been used in the diet of channel catfish. However, our previous research indicates that animal protein is not needed for growing stockersize catfish to food fish when the fish are stocked at densities typical of those used in commercial catfish culture. Whether this holds when fish are stocked at high densities is not known; thus, we conduc...

Journal: :The Veterinary record 2004
P D Govett N J Olby D J Marcellin-Little D S Rotstein T L Reynolds G A Lewbart

Two koi (Cyprinus carpio) from the same pond developed similar lesions of scoliosis. Radiographic examinations showed that their spines had become malaligned as a result of vertebral compression fractures involving T14 to T16. The vertebrae in both fish were stabilised with screws, k-wire and polymethylmethacrylate. They both appeared to improve after surgery, but they began to decline and died...

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