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ThesisItem Open Access Role Of Probiotics In Controlling Prominment Disease Of Catfishes(Chaudhary Charan Singh Haryana Agricultural University; Hisar, 2009) Dahiya, Tejpal; Sihag, R.C.ThesisItem Open Access Effects Of Heavy Metals On The Enzyme Activity In Some Fresh Water Fishes(Chaudhary Charan Singh Haryana Agricultural University; Hisar, 2005) Sarita; Jain, K. L.ThesisItem Open Access Diversity, Visitation Frequency And Pollination Ecology Of Insect Pollinators Of Psidium Guajava L. (Guava)(Chaudhary Charan Singh Haryana Agricultural University; Hisar, 2009) Mehta, Neeru; Sihag, R.C.ThesisItem Open Access Role Of Pineal And Melatonin In Somatic Growth And Electrolyte Balance In Some Catfish Species(Chaudhary Charan Singh Haryana Agricultural University; Hisar, 2006) Sudesh Rani; Sabhlok, V.P.ThesisItem Open Access Studies On The Toxic Effects Of Some Heavy Metals In Indian Major Carps(Chaudhary Charan Singh Haryana Agricultural University; Hisar, 2006) Garg, Smita; Gupta, R. K.ThesisItem Open Access Role Of Probiotics In Controlling Epizootic Ulcerative Syndrome Disease In Carps(Chaudhary Charan Singh Haryana Agricultural University; Hisar, 2009) Sharma, Parvati; Sihag, R.C.ThesisItem Open Access Identification And Characterization Of Potential Probiotic Strains Against Fish Bacterial Diseases(Chaudhary Charan Singh Haryana Agricultural University; Hisar, 2009) Shashank; Sabhlok, V.P.ThesisItem Open Access Survey, isolation and identification of bacterial diseases of fresh water fishes in district Hisar, Haryana(CCSHAU, 2005) Dahiya, Tejpal; Sihag, R.C.;The present investigation was carried out to identify fish pathogens causing fish diseases in catla, rohu, mrigal, common carp, puthi and magur. A number of biochemical tests were carried out for identification of bacterial fish pathogens. The bacterial diseases were identified viz. epizootic ulcerative syndrome, fin and tail rot, hemorrhagic septicemia and vibriosis in three selected fish farms (Mirka, Satrod and SLR, Hansi) from July 2004 to March 2005. These diseases were reported in July, August, October and November. No disease was found in September, December, January, Febuary and March. Ten gram negative ( Aeromonas hydrophila, Enterobacter cloacae, E. gergoviae, Pseudomonas sp., P. pseudomallie, Klebsiella pneumoniae subsp. aerogenes, Providencia sp., Serratia marcescens, Vibrio anguillarum, V. alginolyticus) and two gram positive (Micrococcus roseus, Streptococcus gp Q1) bacterial pathogens were identified from infected fishes. In EUS, fungal hyphae were found penetrating deep into muscles in catla. In fish farm of Satrod, vibriosis was reported in magur. The bacterial pathogens (Vibrio anguillarum, V. alginolyticus) were isolated from the skin lesions. These bacteria are generally found in marine, brackish and rarely in fresh water. Deviation of optimal range of hydrobiological parameters led to infection in fishes resulting in to disease outbreaks.ThesisItem Open Access Molecular characterization of bacterial pathogens of fresh water fishes(CCSHAU, 2006) Ravikant; Gahlawat, S.K.The present investigation was carried out to identify the fish pathogens causing diseases in (catla, rohu, mrigal, grass carp, puthi, murrels and Thai magur). A number of biochemical tests were carried out for identification of bacterial fish pathogens. The bacterial diseases were identified viz. EUS, fin and tail rot, gill rot and haemorrhagic septicemia in village ponds/ fish farms (Charanjeet fish farm, Hansi, Siswala village pond, Satrod village pond, Ishwar Singh fish farm, Dabra, Rajli village pond, Kirtan village pond) from July, 2005 to March, 2006. Diseases were observed in July, September, November, 2005 and January, 2006. No disease was found in August, October, December, 2005 and January, 2006. Two gram positive cocci (Staphylococcus aureus, Streptococcus grp.Q1) and seven gram negative rods (Aeromonas hydrophila, Enterobacter aerogenes, E. cloacae, Klebsiella oxytoca, Citrobacter koseri, Pseudomonas aeruginosa, P. fluorescens) bacterial pathogens were isolated and identified from affected fishes. Amplification of genomic DNA of seven isolates (S. aureus, Kl. Oxytoca, E. cloacae, A. hydrophila, P. fluroescens, P. aeruginosa, Streptococcus grp Q 1) was carried out and ARDRA profiles were prepared by using Hinf1 and SauIIIA restriction endonucleases, separately. Phylogenetic similarity of all seven isolates was analyzed by NTSYSpc 2.0 programme. On the basis of similarity coefficient the isolates were divided in five major groups (A, B, C, D, and E). Group A is most diverse, which had genotype S. aureus followed by group E and group C contained genotypes Streptococcus grp. Q1 and E. cloacae, respectively. The genotypes Kl. oxytoca and A. hydrophila had 83% similarity, in-group B whereas P. fluorescens and P. aeruginosa had 99% similarity in-group D.