Effects of different dietary energy and protein levels and sex on growth performance, carcass characteristics and meat quality of F1 Angus × Chinese Xiangxi yellow cattle

Table 12 Effects of dietary treatments and sex onflavor amino acid composition of LM (mg/100 mg DM basis)

Item	HE		LE		SEM	E	P	E × P
	LP	HP	LP	HP
Lysine	4.61	3.72	4.06	4.25	0.46	ns	ns	ns
Cysteine	4.79	4.59	4.50	4.45	0.33	ns	ns	ns
Umami taste
Aspartic acid	13.86	13.76	13.35	12.15	1.44	ns	ns	ns
Glutamic acid	21.93	19.54	18.67	20.41	1.19	ns	ns	*
Total AA(U)	35.79	33.30	32.02	32.56	1.71	ns	ns	ns
Sweet taste
Threonine	4.52	4.09	4.16	4.18	0.27	ns	ns	ns
Alanine	5.99	5.53	5.36	5.70	0.32	ns	ns	ns
Glycine	4.92	4.32	4.29	4.38	0.32	ns	ns	ns
Serine	9.21	6.23	5.86	5.76	1.37	ns	ns	ns
Proline	2.14	2.13	2.02	2.08	0.21	ns	ns	ns
Total AA(S)	26.79	22.30	21.69	22.10	1.41	ns	ns	ns
Bitter taste
Arginine	6.26	5.20	5.23	5.28	0.48	ns	ns	ns
Histidine	1.26	0.64	0.74	0.64	0.27	ns	ns	ns
Leucine	4.82	4.65	4.61	4.76	0.19	ns	ns	ns
Isoleucine	3.19	3.37	3.05	3.14	0.18	ns	ns	ns
Methionine	4.28	4.11	3.90	4.03	0.17	ns	ns	ns
Phenylalanine	1.59	1.58	1.61	1.56	0.12	ns	ns	ns
Tyrosine	3.82	2.94	3.41	3.54	0.42	ns	ns	ns
Valine	3.53	3.05	2.94	2.94	0.35	ns	ns	ns
Total AA(B)	28.74	25.54	25.52	25.89	1.21	ns	ns	ns
Total AA	100.73	89.46	87.79	89.25	3.51	ns	ns	ns
AA(U)/TAA, %	36.33	36.82	36.48	36.14	0.01	ns	ns	ns
AA(S) /TAA, %	26.09	25.12	24.71	24.86	0.007	ns	ns	ns
AA(B) /TAA, %	28.33	28.79	29.06	29.30	0.009	ns	ns	ns

ISSN: 2049-1891