. 2016 Jan 5;29(9):1322–1330. doi: 10.5713/ajas.15.0703

Table 9.

Standardized ileal amino acid digestibility percentage of protein meals in broiler chicks¹

Amino acid (%)	Ingredients						p-value

	Sunflower meal	Guar meal	Cotton seed meal	Fish meal	Soybean meal (India)	Soybean meal (Argentine)
Indispensable amino acid
Arginine	90.9^a ±1.08	76.9^b ±9.15	85.8^ab ±1.63	82.6^ab ±1.55	89.5^a ±1.16	91.5^a ±2.65	^**
Histidine	77.0^b ±3.20	65.1^c ±3.89	75.0^b ±2.72	75.5^b ±3.90	87.1^a ±1.64	87.9^a ±2.96	^***
Isoleucine	83.9^ab ±1.60	58.5^d ±3.92	70.5^c ±2.78	78.5^bc ±5.84	86.1^ab ±2.20	87.8^a ±2.17	^***
Leucine	82.1^a ±1.51	60.3^c ±2.85	73.9^b ±1.97	82.6^a ±1.90	84.6^a ±2.18	87.1^a ±2.45	^***
Lysine	78.3^bc ±2.93	57.3^d ±3.74	56.8^d ±4.31	72.7^c ±4.34	86.7^ab ±2.08	89.6^a ±3.55	^***
Methionine	91.4^a ±0.62	63.8^c ±4.14	75.0^b ±2.02	79.1^b ±1.18	87.9^a ±3.37	89.8^a ±2.13	^***
Phenylalanine	78.9^ab ±7.39	60.4^b ±4.55	71.2^ab ±14.15	81.1^a ±1.32	84.7^a ±0.31	85.4^a ±2.78	^**
Threonine	73.1^bc ±3.09	52.6^d ±4.23	67.7^c ±1.90	77.3^ab ±3.23	82.0^a ±1.91	83.7^a ±3.66	^***
Valine	78.7^bc ±1.96	53.6^d ±5.73	68.9^c ±2.50	77.1^ab ±4.34	84.5^a ±2.45	86.5^a ±2.53	^***
Dispensable amino acid
Alanine	79.5^ab ±2.68	51.4^c ±6.61	72.3^b ±1.50	84.0^a ±2.67	83.2^a ±2.35	84.8^a ±0.94	^***
Aspartic acid	78.7^ab ±2.43	63.7^c ±1.41	74.7^b ±3.00	76.1^b ±4.17	84.5^ab ±4.25	82.1^a ±1.24	^***
Cysteine	69.4^ab ±2.66	51.0^c ±4.42	60.9^bc ±4.37	62.8^bc ±4.70	77.1^a ±3.26	77.2^a ±7.44	^***
Glycine	60.0^cd ±6.31	56.6^d ±1.23	68.3^bc ±2.51	77.9^ab ±4.01	85.1^a ±0.49	87.6^a ±3.67	^***
Glutamic acid	87.6^a ±1.58	71.0^c ±1.86	81.6^ab ±2.43	80.7^b ±2.36	80.0^ab ±1.42	82.4^a ±3.64	^***
Serine	68.3^bc ±4.0	62.4^c ±4.23	73.0^b ±2.18	75.8^ab ±5.13	84.6^a ±1.95	83.0^a ±1.46	^***
Average	77.1^b ±8.05	^m ±7.24	71.7^c ±7.12	77.6^b ±5.14	83.4^a ±3.32	85.1^a ±3.84	^***

Data were average of 3 samples of each feed ingredient; diet based on each sample was fed to six replicates each containing six birds.

^a,b,c,d

Values sharing different superscripts within rows are statistically significant (p<0.05).

p<0.05;

^**

p<0.01;

^***

p<0.001.