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

Table 6.

Digestible indispensable amino acid score-like values of different sources of protein ingredients using reference protein for canine adult maintenance

Indispensable amino acid	Reference¹	Ingredient²			SEM³
Indispensable amino acid	Reference¹	CM	CLH	CH	SEM³
Arginine	AAFCO	209.9^a	194.3^b	211.3^a	2.78
	NRC RA	170.6^a	157.9^b	170.6^a	2.26
	NRC MR	170.6^a	157.9^b	170.6^a	2.26
Histidine	AAFCO	159.3^b	168.3^b	212.6^a	5.95
	NRC RA	89.5^b	94.5^b	119.4^a	3.34
	NRC MR	90.7^b	95.7^b	121.0^a	3.39
Isoleucine	AAFCO	161.0^c	196.1^a	182.4^b	2.88
	NRC RA	89.4^c	109.0^a	101.4^b	1.60
	NRC MR	90.6^c	110.4^a	102.7^b	1.62
Leucine	AAFCO	157.2^c	196.4^a	177.0^b	2.60
	NRC RA	87.3^c	109.1^a	98.3^b	1.44
	NRC MR	88.0^c	110.0^a	99.1^b	1.46
Lysine	AAFCO	156.2^c	187.7^b	210.2^a	3.53
	NRC RA	156.7^c	188.3^b	210.8^a	3.54
	NRC MR	156.7^c	188.3^b	210.8^a	3.54
Methionine	AAFCO	100.3^c	113.5^b	127.0^a	1.23
	NRC RA	56.0^c	63.4^b	71.0^a	0.68
	NRC MR	56.9^c	64.4^b	72.1^a	0.70
Phenylalanine	AAFCO	131.2^b	144.9^a	137.1^ab	2.36
	NRC RA	73.2^b	80.8^a	76.5^ab	1.31
	NRC MR	73.2^b	80.8^a	76.5^ab	1.31
Threonine	AAFCO	117.0^b	145.3^a	139.4^a	2.80
	NRC RA	72.5^b	90.1^a	86.5^a	1.74
	NRC MR	73.4^b	91.2^a	87.5^a	1.76
Tryptophan	AAFCO	93.3^c	126.3^a	113.9^b	1.18
	NRC RA	59.2^c	80.2^a	73.3^b	0.75
	NRC MR	60.3^c	81.6^a	73.7^b	0.76
Valine	AAFCO	157.6^b	185.4^a	148.0^b	2.94
	NRC RA	87.9^b	103.4^a	82.6^b	1.64
	NRC MR	88.4^b	103.9^a	83.0^b	1.65
Methionine + cystine	AAFCO	73.2^b	72.5^b	81.6^a	2.14
	NRC RA	40.8^b	40.4^b	45.5^a	1.19
	NRC MR	40.8^b	40.4^b	45.5^a	1.19
Phenylalanine + tyrosine	AAFCO	61.1^c	78.8^b	93.6^a	1.32
	NRC RA	33.9^c	43.9^b	52.0^a	0.74
	NRC MR	34.1^c	43.9^b	52.2^a	0.74

¹AAFCO: AAFCO nutrient profile; NRC RA: NRC recommended allowance; NRC MR: NRC minimal requirement.

²CM: chicken meal; CLH: chicken liver and heart hydrolysate; CH: chicken hydrolysate.

³Standard error of the mean.

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