Table 7.

Body weight gain and average expenditure (USD) per kg additional weight gain above the control group in probiotic, prebiotic, and synbiotic group

Parameters	Control	Probiotic	Prebiotic	Synbiotic
Average total body weight gain (kg)	29.38 ± 0.88b	38.03 ± 1.23a	32.10 ± 1.36b	40.10 ± 1.32a
Weight gain (kg) over and above the control group		8.65	2.72	10.72
Cost		0.64	1.40	1.02
Cost/kg weight		0.074	0.52	0.095

Means bearing different superscripts in a row differ significantly (P<0.05). T₀: Control group, basal diet without any additive; T₁: Probiotic group, basal diet + Lactobacillus acidophilus @ 1 g/calf per day (2 × 10¹⁰ cfu/g); T₂: Prebiotic group, basal diet + Mannan oligosaccharide @ 4 g/calf per day; and T₃: Synbiotic group, basal diet + Lactobacillus acidophilus @ 0.5 g and 2 g MOS/calf per day