Trichosrtongylus spp., Looss, 1905 is one of the important nematode of alimentary canal that causes a great harm to the ruminants. The study was undertaken to determine the prevalence of Trichostrongylus spp. and effects of temperature, pH, humidity, light and dark, nutrient and other media on the hatching of eggs, the development and survival of larvae of Trichostrongylus spp. Samples were collected from goats from different villages and slaughter houses of Trishal, Mymensingh, Bangladesh, during the period from January to May, 2014. A total of 82 fecal and 67 visceral samples (abomasum, small intestine and large intestine) were collected. Overall prevalence was 20.73% and 14.93% for fecal samples and visceral samples, respectively. Young (23.64%) were 1.78 times more susceptible to Trichostrongylus infection than adult (14.82%) and which was statistically significant (p < 0.001). It was also revealed that females (23.08%) were 1.31 times more susceptible than male (18.61%) and statistically significant (p < 0.001). Here, we incubated eggs at different temperature gradients, humidity and pH in phosphate buffer saline (PBS), tap water (TP) and normal saline (NS) and PBS with 5%, 10% and 15% serum. Maximum (46.67%) hatching of eggs was observed at 18°C on day 5. and development of eggs arrested at 4°C temperature. No development and hatching occurred at pH 2. Hatching of eggs were better on day 6 in all cases and highest hatching rate observed at pH 6.0 (32.30%). Maximum hatching of eggs (42.86%) was recorded at relative humidity of >80%-90% at day 5. There was no significant effect of light on the development and hatching of eggs of Trichostrongylus spp. Maximum eggs hatched in PBS containing 15% serum (46.67%). Moreover, in this medium, survival rate of larvae was also highest (19.08%). So, it is concluded that PBS containing 15% serum can be used as a suitable media for hatching of eggs and survival of larvae.All copyrights reserved to Nexus® academic publishers
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