Analisis Profil Protein Darah Anak Kambing Peranakan Etawah Dengan Pemberian Pakan Substitusi Susu Sapi

The objective of this study is to determine the protein profile of pre-weaning kids fed with cow's milk as a substitute for dam’s milk. The materials used were 18 Etawah Descendant (PE) kids born the twin at the age of 5-13 days from 3-4-year-old dams. This experimental design was a completely randomized design with three treatments with six replications per treatment, namely the control (T 0 ) fed 100% goat’s milk, treatment 1 (T 1 ) fed 50% goat’s milk and 50% cow’s milk, treatment 2 (T 2 ) fed 100% cow’s milk. The protein profile serum was analyzed by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) method, 12,5% of the resolving gel and 3% of the stacking gel were used. The protein profile of the 5-14 days old PE kids were 19 protein bands with the molecular weight ranging from 15-160 kDa. The kids fed with 100% goat milk (T 0 ) and those substituted by 50% cow's milk (T 1 ), it was produced 19 protein bands with molecular weights ranging from 15 kDa to 155 kDa, while those fed with 100 % cow's milk (T 2 ), it was produced 17 protein bands with molecular weights ranging from 13 kDa to 160 kDa. It can be concluded that the dam's milk substitute using cow's milk at the 50% level does not affect the blood protein profile of goat kids, while the 100% substitute produces the different number and types of protein