Garlic (Allium sativum L) is a bulbous vegetable well known for its medicinal properties and as a growth promoter. This study was carried out to investigate the effect of garlic as a feed additive on broilers in Buea. This effect was examined in terms of growth, carcass, haematology, and serum biochemistry. One hundred fifty broiler chickens of age 30 days were used, and the experiment went on for 30 days again. Five treatments were prepared; the inclusion levels were 0%, 0.25%, 0.5%, 0.75%, and 1%, while the first was the control with no garlic included (T1). The treatment groups significantly increased liver, heart, and bile weights compared to the control group (P < 0.05). On the other hand, the abdominal fats were significant lower in the treatment groups than in the control. For the haematological parameters, haematocrit (HCT) values and mean corpuscular volume (MCV) showed significant values across treatments (P ≤ 0.05). All other haematological parameters did not show significant values across treatments (P > 0.05). Serum profiles differed between birds fed with graded levels of garlic as a feed additive and the control. The highest AST level of 6.02±0.35 µ/l was observed with birds of T5 (1%), while the least 4.87±0.26 µ/l was with T4 (0.75%) and the difference was significant at (P < 0.05). In addition, ALP levels 36.53±1.04 µ/l were highest for birds in T5, while the least 15.56±0.80 µ/l was from the T1 with a significant difference (P < 0.05). From the study, garlic is very good for producing meat with low abdominal fat, with an inclusion level of 1%.