author(s)
Mohd. Saif, Rachna Varma, Rishi Kant and Rakesh Kumar Gupta

abstract
Toxic pesticides are chemical which do not degrades easily in the environment and get deposited in body tissues through biomagnification. The presence of pesticides in the environment is highly toxic to humans, animals and birds. As they play an important role in increasing the production of food and improve human health by reducing vector borne diseases but they are harmful also in same manner. The residue of environmental pesticides remains in soil, water, air, feed and fodder items for a longer period and contaminate them. This article emphasizes the effects of pesticides on the reproductive system mainly in animals and chickens. Excess pesticides in the environment lead to respiratory distress, increased stress levels, immunosuppression, behavioural changes which ultimately result into decreased production in the form of egg, meat and milk. The pesticides also have detrimental effect on human heath as their concentration increases in body fat depots when their occurrence is higher in environment.