The efficacy of immune system may be deregulated by various exogenous and endogenous factors which impair the immunohomeostasis of birds and their elimination is not always possible. As a result, birds become more prone to secondary disease conditions and show poor growth even if provided feed ad libitum and ultimately resulted in low feed conversion ratio and productivity. One of the practical methods to protect the immunobalance is by the use of pharmacological immunomodulators. Although vaccines and antibiotics have contributed a lot in controlling infectious diseases but frequent...

Seminar paper from the year 2013 in the subject English Language and Literature Studies - Linguistics, University of Sindh (Institute of English Language and Literature), language: English, abstract: Linguists with the collaborations of Psychologists have presented various theories of cognitive development and language learning since the time unknown, these theories have influenced the learners' learning behavior in a particular area over a specific time when a particular theory was in force. These theories were not only followed but many of them empirical tested and tried which finally...