EFFICACY OF TRIPTOLIDE IN POPULATION REGULATION OF Rattus rattus (Linnaeus) IN POULTRY FARMS
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Date
2011
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Punjab Agricultural University Ludhiana
Abstract
Feeding of 0.1, 0.2 and 0.3% triptolide in bait for 5 days in no-choice feeding test to male
Rattus rattus (Linnaeus) in laboratory resulted in average per day consumption of 10.76,
20.45 and 22.60 mg/kgbw of triptolide, respectively and 75.92-93.00% acceptance of treated
bait over plain bait. No significant effect of triptolide treatment was observed on body weight
and reproductive organ weights of rats after 30 days of termination of treatment. The sperm
motility and viability in the cauda epididymal fluid of rats treated with 0.2% triptolide was
found to be decreased significantly by 80.65 and 75.14%, respectively from that of untreated
rats. The major effect of triptolide treatment on sperm morphology was sperm head tail
separation which varied from 46.13-53.69% in treated groups of rats. Laboratory breeding
revealed 66.67, 100.00 and 33.33% decrease in pregnancy rate of females paired with males
treated with 0.1, 0.2 and 0.3% triptolide, respectively. Treatment of poultry farm with 0.005%
bromadiolone followed by second treatment with 0.2% triptolide at 15 days interval for 5
days revealed significantly lower rodent population rebuild up (16.30%) than that observed in
poultry farm treated only with 0.005% bromadiolone (51.87%). Only 25% of the rats trapped
from poultry farm treated with triptolide revealed antifertility effects which may be due to
partial recovery in effects after about 60 days of termination of treatment. Present studies
suggest the potential of 0.2% triptolide in bait for 5 days in regulating post control population
rebuild up of R. rattus in poultry farms.