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| Articles
by
S.K. Gahlawat |
Total Records (
2 ) for
S.K. Gahlawat |
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Tejpal Dahiya
,
R.C. Sihag
and
S.K. Gahlawat
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Haematological profile of an animal is the reflection of its immunological status. Fishes are prone to infections by several pathogens which influence the immunity of the affected individuals. The effect of three probiotics on four haematological parameters viz., level of haemoglobin, total erythrocyte count, total leucocytes count hematocrit/packed cell volume of Indian magur (Clarius batrachus L.) was studied over a period of eight weeks. The level counts of all these four parameters decreased significantly in the blood of fish administered with pathogenic organisms as compared to the control; the fish administered with pathogenic organisms died after three weeks. The level counts of hematological parameters showed significant increase in the blood of fish treated with probiotics alone versus control and also in fish administered with pathogenic organisms versus probiotics. A comparison among the three probiotics revealed that, probiotic 1 was more effective than probiotic 3 and probiotic 2; the effect of latter stood at the lowest level. |
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Parvati Sharma
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Ram C. Sihag
and
S.K. Gahlawat
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The Epizootic Ulcerative Syndrome (EUS) is a dreaded disease of mrigal (Cirrhinus
mrigala Ham.) inflicting heavy mortality in the latter fish at the farmers’
ponds. To realize a good harvest, the control of this disease through the use
of some probiotics is most important. The aim of study was to ascertain the
effect of two probiotics on various blood and life parameters of mrigal (C.
mrigala). Two commercially available probiotics with different compositions
were tested for this purpose. In vitro trials were performed by the usual
‘well poisoning method’ whereas in vivo trials were performed
in the fishes that were subjected to induced pathogenicity. In the treated fishes,
periodic observations were recorded on their different hematological (viz.,
amount of hemoglobin, total erythrocyte count and total leukocyte count), survival
and growth (length and weight) parameters. In the in vitro trials both
probiotics developed clear zones of inhibition. However, the zone shown by probiotic-1
(having bacteria only) was smaller in size than that by probiotic-2 (in addition
to bacteria also having vitamins, enzymes and salts), revealing the probable
greater efficacy of the latter than the former. In the in vivo trials,
the values of all the hematological parameters were found to decrease (leukocyte
count increased) in the fish having induced pathogenicity and so were survival
and growth parameters. But these values showed significant increase (leukocyte
count decreased) in the probiotic treated fishes. This confirmed the useful
role of both the probiotics in controlling the EUS disease in the mrigal. However,
probiotic-2 was found to be more effective than probiotic-1 in increasing the
hematological parameters and growth and survival in this fish. |
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