Similarly, there is contamination of disinfectants, antibiotics, mycotoxins etc., in feed of poultry and dairy animals that are excreted in milk, meat or eggs and subsequently enters in our food chain. 

These chemical or biological toxins or pathogens are posing serious human health hazards. The toxic effects in human may be manifested at population, individual, tissue, cellular or molecular level. Some effects such as death, acute respiratory illness, skin rashes, toxic hepatitis are apparently visible while some time hidden serious efforts such as immuno-suppression, reproductive/fetal abnormalities, teratogenic, mutagenic/carcinogenic effects etc. Reduce growth are not uncommon.

The nervous system is a prominent target when toxins can induce acute psychosis, memory impairment, neuropathy and tremor. Adverse consequences of such potential toxicities are illness leading to disability, anxiety, stress, chronic frustration, anger and emotional discomfort.

General public is not aware of hidden and harmful effects of many compounds and foods of animal origins on human health. The World Trade Organization (WTO) has emphasized on standardized frame work of quality control of food items of animal origin for export or import purpose and this has been elaborated in the Sanitary and Phyto-Sanitary (SPS) measures under trade in goods. Moreover, the laboratory shall take care of Technical barriers on Trade (TBT)trade

Government of Punjab realized the serious public problem of Food Security and Agriculture Support Program Loan II (ASPL-II) through Government of Punjab decided to spend Rs 99.998 millions for establishing a ?Quality Control Laboratory for Testing Livestock and Food of Animal Origin with reference to World Trade Organization (WTO-QCL) in University of Veterinary and Animal Sciences (UVAS), Lahore.  This laboratory will test the quality of livestock and food of animal origin not only to meet the requirement of international trade but also to provide quality conscious food for our own nationals. To achieve these targets, tremendous revolutionary changes in the Extension Wing of Veterinary Services are required to be made.