The growth and body morphometrism of weaned pigs on dietary treatment with Lactobacillus acidophilus (LA) and garlic powder (GP) was incorporated in a sixteen-week study. The experiment adopted a completely randomized design in allocating landrace pigs (n=24) to four discrete dietary treatments, tagged (T1-T4), and replicated thrice. Pigs were fed basal diets improved with phytomicrobial treatment using LA and GP, i.e., T1, control; T2, 50g LA; T3, 50g GP; T4, 50g each of LA and GP 50kg-1 diet. Pigs were fed 4% of their body weight even as their weekly weights were determined. Daily records of feed intake (ADFI) and weight gain of test pigs calculate their feed conversion efficiency (FCR). Morphological measurements of pig's height at withers (HW), chest girth (CG), and body length (BL) were on a bi-weekly basis till the completion of the study. Data generated and analyzed presented ADFI and FCR of T4 (1.16kg; 3.41) to be significantly different (P<0.05) from T1 (1.44kg; 4.97) but similar to T2 (1.26kg; 3.60) and T3 (1.25kg; 3.79). HW was superior in T2 (53.00cm) yet inferior (P<0.05) in T1 (47.54cm) and T4 (46.17cm). BL of T2 (81.08cm) was better (P<0.05) than T4 (75.02cm) alongside wider CG (72.33cm) than T1 and T4 (67.46 and 65.02cm). Consequently, we concluded that phytomicrobial dietary treatment using 50g each of LA and GP 50kg -1 diet improved growth performance of young pigs while 50g LA/50kg diet increased morphological dimensions for height and bulkiness to accomplish superior body morphometrism of the pigs.