Aflatoxicosis and its amelioration in black tiger shrimp, Penaeus monodon Fabricius

Gopinath, Radhika (2006) Aflatoxicosis and its amelioration in black tiger shrimp, Penaeus monodon Fabricius. PhD thesis, Cochin University of Science and Technology, Cochin.

[img]
Preview
PDF
44Mb

Abstract

Penaeus monodon is the most widely fanned shrimp in India and elsewhere. The present study was undertaken to elucidate the nutritional and pathological changes associated with aflatoxin B I toxicity in Penaeus monodon and to detennine the efficacy of vitamins E and K, and Amrita Bindu, a herbal mixture in ameliorating the toxicity of AFB1• A survey conducted to detect aflatoxin contamination in shrimp and fish feeds used in fanns located in Ernakulam District, Kerala, India, revealed that feeds and feed ingredients obtained freshly from farm and stored under proper conditions contain only safe levels of AFBI « 20 ppb), while those stored for six months had AFBI levels in the range of 150 - 250 ppb. Three sets of experiments were conducted in P. monodon post larvae to determine the effect of AFBI on growth and feed perfonnances. ~ The first experiment was conducted in post larvae of size 0.06 ± 0.013 g to determine the effects of selected levels of AFBI viz., 0 ppb, 20 ppb, 50 ppb, 2500 ppb and 5000 ppb on weight gain, survival and histological architecture. This trial was conducted to determine the doses of AFBI to be taken for further study. The results of the experiment showed that 50 ppb to 2500 ppb AFBI could produce chronic aflatoxicosis in P. monodon. ~ The second experiment was conducted on postlarvae of size 0.56 ± 0.001 g to determine the effects of different doses of AFBI viz., 0 ppb, 50 ppb, 250 ppb, 500 ppb, 750 ppb, 1000 ppb and 2000 ppb on weight gain, specific growth rate, apparent feed conversion and survival rate. The trial revealed highly significant (P<0.05) effect of AFBI on the response parameters.

Item Type:Thesis (PhD)
Supervisor(s):Paulraj, R
Uncontrolled Keywords:Aflatoxtcosis; amelioration; black tiger shrimp; shrimp; prawn Penaeus monodon; Fabricius
Subjects:Theses
Fish and Fisheries > Fish Toxicology
Marine Environment > Algal Blooms
Crustacean Fisheries > Prawn and Prawn fisheries
Divisions:CMFRI-Cochin > Physiology and Nutrition Pathology
CMFRI-Cochin > Marine Capture > Crustacean Fisheries
ID Code:7560
Deposited By:Dr. V Mohan
Deposited On:17 Feb 2011 11:25
Last Modified:20 Jan 2014 13:48

Repository Staff Only: item control page