Biochemical comparative study of some blood constituents of calves fed on milk replacements and maternal milk

Egypt is one of the developing countries where protein malnutritionremainthe major problem of nutrition.- The trails applied today are directed to find low cost, high proteinfoods. One of the main important foods of high protein low cost is cow’smilk. This study is carried out to investigate the biochemical changes ofblood serum constituents of calves reared on maternal milk and that,received milk replace. The material of our study were 24 calves their agesranged beteen 7-9 days.These calves divided into two groups as follows: u1- Control group:Included 12 calves and reared on maternal milk till the age ofweaning ( 13 weeks). 2- Experimental group: Contained 12 calves and reared on milk replacer ”vita milkproduced by Fralex company - France”.Both groups of calves were obtained from Shobra Shehab militaryfarm and received colostrum for 5 days after parturition, then the calvesreceived milk replacer gradually from the 2nd week after birth, while thecontrol group kept on maternal milk, calves of both group were weighed;- every two weeks till weaning at 13 weeks of age. Blood samples weretaken every two weeks, starting from the third weeks of age till the 13thweeks of age, serum was separated in the farm and persevered at -4°C,prior to biochemical analysis which included the following estimates: