*3.5. Antioxidant Status*

Oral administration of RSO and MOs resulted in a significant (*p* = 0.050) decrease in blood serum lipid peroxidation (i.e., TBARs) (Figure 4). Rocket seed oil and MOs reduced serum TBARS concentration by about 9.43% of the control group. However, there is a significant increase in serum antioxidant activities as measured by CAT (*p* = 0.021) and SOD (*p* = 0.001) by oral administration of RSO and WGO or their mixture when compared to the control group, while serum TAC activity increased significantly (*p* = 0.017) by oral administration of RSO and MOs when compared to the control group.

**Figure 4.** Serum thiobarbituric acid reactive substances and antioxidants status of V-line growing rabbits (5–12 weeks of age) that were administered orally with rocket seed oil, wheat germ oil, and their mixture. Columns marked with different superscripts are significantly different at *p* ≤ 0.05. CAT: Catalase; SOD: Superoxide dismutase; TAC: Total antioxidant capacity; TBARs: Thiobarbituric acid reactive substances.

#### *3.6. Antibody Titers against SRBCs*

The humoral immune response includes the response of natural antibodies to SRBCs, which were measured at 9, 10, and 11 weeks of age, as shown in Table 6. Oral administration of RSO, WGO, and their mixture caused an improvement (*p* = 0.010) in the antibody titers against SRBCs of growing rabbits at 9 weeks of the rabbit age compared to the control group. However, the antibody titers against SRBCs of growing rabbits at 10 weeks of rabbit age significantly increased (*p* = 0.044) in the group that orally received WGO compared to the control.

**Table 6.** Antibody titers against SRBCs of V-line growing rabbits (5–12 weeks of age) that were administered orally with rocket seed oil, wheat germ oil, and their mixture.


a,b Means with a different superscript in the same row are significantly different (*p* ≤ 0.05). SRBCs: Sheep red blood cell counts.
