An 8-week trial to examine the impacts ofArthrospira platensisandChlorella vulgarison the growth, nutrient aspects, intestinal efficacy, and antioxidants of 75 New Zealand white male rabbits (initial body weight = 665.93 ± 15.18 g). Herein the study was designed in one-way ANOVA to compare the effects of the two algae species with two levels of supplementations in the feeds of New Zealand white rabbits. The rabbits were divided into five groups (n = 15/group), where the first group was allocated as the control group (Ctrl) while the second and third groups receivedA. platensisat 300 or 500 mg/kg diet (Ap300 or Ap500). The fourth and fifth groups fedC. vulgarisat 300 or 500 mg/kg diet (Ch300 or Ch500). The basal diet rabbits exhibited the lowest values of weight, lipase, protease, and the highest feed conversion ratio, which improved noticeably with algae addition, particularly with Ap500, Ch300, and Ch500. All tested groups showed normal intestinal structure. Amylase potency, hematological indicators, and serum biochemistry revealed non-significant variation except for a higher serum total protein and lower total cholesterol in algal groups. The best GPx existed in groups fed algal diets, while favorable SOD and CAT efficiency occurred at the higher level ofArthrospiraand both levels ofChlorella. In conclusion, incorporatingArthrospiraorChlorellain the diet of New Zealand white rabbits improved performance, nutrient utilization, intestinal efficacy, and antioxidants.Arthrospira(Ap500) andChlorella(Ch300 or Ch500) have almost the same beneficial effect on rabbit performance.