. 2013 Jan;26(1):72–81. doi: 10.5713/ajas.2012.12277

Table 6.

Effects of soybean small peptide (SSP) infusion into rumen at the rates of 0 (Control), 100 (SSP100), 200 (SSP200) and 300 (SSP300) g/d on flux of amino acids at proximate duodenum of Luxi Yelow cattle (n = 4)

Item	Treatment				SEM¹	Contrast²

	Control	SSP100	SSP200	SSP300		L	Q
Aspartic acid	43.20^b	45.59^b	54.87^a	57.74^a	1.308	<0.001	<0.001
Glutamic acid	72.26^c	78.00^b	89.87^a	94.24^a	1.330	<0.001	<0.001
Serine	29.67^c	31.73^c	40.66^b	44.46^a	1.106	<0.001	<0.001
Glycine	23.26^bc	22.10^c	26.78^b	31.57^a	1.240	<0.001	<0.001
Histidine	13.86^c	17.42^b	18.21^ab	19.71^a	0.968	<0.001	<0.001
Arginine	23.01^c	24.95^b	27.96^a	28.49^a	1.010	<0.001	0.002
Threonine	25.04^c	26.62^bc	29.36^ab	30.95^a	1.130	<0.001	<0.001
Alanine	30.10^b	30.14^b	29.76^b	36.73^a	0.922	0.004	<0.001
Proline	27.79^c	31.43^b	33.97^b	38.12^a	1.127	<0.001	<0.001
Tyrosine	17.80^ab	15.87^c	16.86^bc	19.21^a	0.979	0.161	0.003
Valine	30.74^c	31.96^bc	33.39^ba	34.38^a	1.053	<0.001	0.002
Methionine	8.66^b	9.68^ba	10.54^ba	10.82^a	1.019	0.003	0.009
Cystine	8.96^c	8.97^c	10.17^b	12.32^a	0.849	<0.001	<0.001
Isoleucine	26.37^b	28.36^ab	30.27^a	30.31^a	1.154	0.004	0.009
Leucine	42.02^b	44.74^b	49.06^a	49.93^a	1.232	<0.001	<0.001
Phenylalanine	20.59^c	23.39^b	26.30^a	25.07^a	0.964	0.002	<0.001
Lysine	25.38^d	29.88^c	33.50^b	35.78^a	1.067	<0.001	<0.001
TAA³	468.43^b	495.15^b	548.73^a	583.85^a	2.181	<0.001	<0.001
NEAA⁴	244.08^d	254.85^c	292.75^b	322.07^a	1.509	<0.001	<0.001
EAA⁵	224.63^c	245.97^b	269.62^a	276.85^a	1.604	<0.001	<0.001

SEM = Standard error of mean.

p values for the linear (L) or quadratic (Q) effects of SSP infused at the rates 0, 100, 200, 300 g·cattle⁻¹·d⁻¹.

TAA = Total amino acids.

⁴

NEAA = Non-essential amino acids.

⁵

EAA = Essential amino acids.

^a–d

Means within a row with different superscript letter differ (p<0.05).