Effects of In Ovo Injection of Coenzyme Q10 on Hatchability, Subsequent Performance, and Immunity of Broiler Chickens

Table 5

Effect of different levels of Q10 on serum enzyme activity of chicken at different ages.

Item	Sham control	Un-injected control	Q10, 0.1 mL/egg	Q10, 0.2 mL/egg	SEM	P-value
		at day of hatching (U/mL)
AST	219	208	187	186	10.2	0.010
ALT	3.33	3.23	2.33	2.30	0.21	0.001
CAT	6.24	6.18	8.27	8.64	0.11	0.001
SOD	149.8	150.6	172.8	177.6	5.33	0.001
		At 42 days of age (U/mL)
AST	198	201	166	162	8.21	0.002
ALT	3.11	3.27	2.67	2.45	0.13	0.012
CAT	4.12	5.08	7.82	8.16	0.17	0.001
SOD	139.8	141.6	168.9	171.2	4.95	0.001

Means with common letters in the same columns are not significantly different (P>0.05). SEM: standard error of the means; AST: aspartate amino transferase; ALT: alanine amino transferase; CAT: catalase; SOD: superoxide dismutase; Q10: coenzyme Q10.