*Per kg body weight, #Per 100g of diet. BD: As per the AOAC Supplementary table 1; MILK: Whole milk containing 13% total solids (TS). [TS= Fat 4% + SNF 9%]; DAHI: Culture used for dahi preparation-Streptococcus thermophilus NCDC074 which contains approx.0.9 % of lactic acid as per the titration method; ZED: Culture used for dahi preparation-Streptococcus thermophilus NCDC074 enriched with zinc (please refer material and method section for zinc enrichment); ZEP: Culture used for probiotic dahi preparation Lactobacillus rhamnosus NCDC 610 and Streptococcus thermophilus NCDC074 enriched with zinc (please refer material and method section for zinc enrichment).