. 2023 Aug 28;101:skad289. doi: 10.1093/jas/skad289

Table 5.

Standardized amino acid digestibility of treatment diets containing different sources of protein

Amino acid, %	Treatment¹					SEM²
Amino acid, %	CONd	5% CLHd	CLHd	5% CHd	CHd	SEM²
Indispensable amino acid
Arginine	91.7	88.7	91.8	92.4	91.8	0.88
Histidine	87.1^a	79.1^b	81.9^b	81.4^b	85.9^b	1.76
Isoleucine	86.4	83.4	88.5	88.5	88.2	1.20
Leucine	88.0^ab	84.8^b	90.3^a	89.9^a	89.2^ab	1.11
Lysine	87.7	82.8	87.6	87.3	86.7	1.17
Methionine	92.4	91.0	93.5	92.7	92.1	0.70
Phenylalanine	87.3^ab	83.4^b	88.5^a	88.7^a	87.2^ab	1.15
Threonine	84.2^ab	79.9^b	88.6^a	87.4^ab	86.4^ab	1.79
Tryptophan	92.5	89.9	92.0	92.3	93.5	0.83
Valine	84.0^ab	80.3^b	87.9^a	86.9^a	85.4^ab	1.28
Selected dispensable amino acid
Cysteine	69.4	61.7	71.5	73.7	71.8	3.49
Tyrosine	87.5^ab	83.4^b	89.8^ab	88.1^ab	91.4^a	1.46

¹CONd: chicken meal diet; 5% CLHd: 5% substitution of chicken liver and heart hydrolysate of chicken meal diet; CLHd: chicken liver and heart hydrolysate diet; 5% CHd: 5% substitution of chicken hydrolysate of chicken meal diet; CHd: chicken hydrolysate diet.

²Standard error of the mean.

^a,bMeans in the same row with different superscript letters are different (P < 0.05).