Table 8.

Effect of dietary leucine supplementation on AA composition of testis in 150-days-old boars.

Items (%)	CON	LEU	P-value
Aspartic acid	4.75 ± 0.15	5.06 ± 0.02	0.07
Threonine	2.38 ± 0.10	2.45 ± 0.02	0.29
Serine	2.61 ± 0.01	2.63 ± 0.12	0.85
Glutamate	7.84 ± 0.03	8.53 ± 0.34	0.07
Glycine	3.46 ± 0.59	3.53 ± 0.08	0.85
Alanine	3.12 ± 0.18	3.25 ± 0.07	0.29
Cysteine	0.40 ± 0.29	0.66 ± 0.04	0.13
Valine	2.60 ± 0.08	2.69 ± 0.07	0.22
Methionine	0.93 ± 0.15	0.97 ± 0.11	0.77
Isoleucine	1.89 ± 0.13	2.00 ± 0.14	0.37
Leucine	4.26 ± 0.06	4.47 ± 0.13	0.06
Tyrosine	1.83 ± 0.07	1.97 ± 0.13	0.19
Phenylalanine	2.35 ± 0.06	2.43 ± 0.09	0.28
Lysine	4.08 ± 0.14	4.21 ± 0.11	0.26
Histidine	1.35 ± 0.25	1.24 ± 0.05	0.40
Arginine	3.93 ± 0.06	3.97 ± 0.21	0.75
Proline	3.19 ± 0.30	3.28 ± 0.10	0.67
Total acid hydrolyzed AA	50.97 ± 0.74	53.33 ± 1.49	0.07

CON, control group; LEU, leucine group. Values are presented as means ± Standard deviation (n = 15).