Phenylalanine flux and gastric emptying are not affected by replacement of casein with whey protein in the diet of adult cats consuming frequent small meals

Table 2 Amino acid concentrations (μ M ) in plasma of adult cats

Amino acid	Casein	Whey	Pooled SEM	P
Alanine	654	678	48	0.74
Arginine	133	136	8	0.80
Aspartate	21	38	4	0.01
Citrulline	66	43	8	0.09
Cysteine	28	34	4	0.36
Glutamate	64	88	7	0.03
Histidine	134	122	11	0.45
Isoleucine	90	104	12	0.42
Leucine	174	187	13	0.50
Lysine	218	210	15	0.70
Methionine	139	73	22	0.09
Ornithine	49	56	5	0.38
Phenylalanine	87	103	7	0.12
Taurine	55	57	9	0.87
Tryptophan	103	108	15	0.83
Tyrosine	92	98	14	0.78
Valine	251	301	33	0.31
Indispensable Amino Acids	1242	1123	81	0.37
Dispensable Amino Acids	973	1005	65	0.74
Total Amino Acids	2215	2114	150	0.67

Data are means from 8 to 12 h after initiating consumption of casein- or whey-based diets at 30-min intervals (n = 8).

ISSN: 1746-6148