. 2021 May 31;63(3):531–544. doi: 10.5187/jast.2021.e53

Table 3. Effects of short-term exposure to heat stress or thermal-neutral conditions on plasma concentrations (µg/mL) of indispensable and dispensable amino acids in growing pigs.

Amino acid¹⁾	Treatment²⁾				SEM	p-value
Amino acid¹⁾	TN(-1D)	HS	TN(2D)	TN(5D)	SEM	p-value
Indispensable
Thr	10.80^b	25.33^a	21.13^a	20.84^a	1.43	0.011
Val	1.78^b	3.75^a	1.93^b	3.38^ab	0.28	0.044
Met	5.77^b	7.32^a	7.65^a	7.80^a	0.22	0.016
Ile	3.13	3.08	3.47	3.50	0.26	0.913
Leu	16.10	19.85	21.10	21.70	0.85	0.123
Phe	20.38	23.55	25.60	26.60	1.56	0.527
Lys	40.97	42.68	62.72	57.30	3.76	0.133
His	13.23	15.05	17.33	17.48	0.84	0.257
Arg	31.30	32.37	39.10	38.40	2.35	0.539
Dispensable
Asp	0.22	0.28	0.27	0.46	0.10	0.847
Ser	15.92	20.20	20.25	18.22	1.00	0.373
Glu	11.97	13.32	6.50	4.58	2.26	0.482
Gly	22.60	28.63	33.48	30.28	1.50	0.097
Ala	80.73	87.27	94.70	86.66	3.67	0.600
Cys	63.78^b	82.12^ab	90.78^a	83.30^ab	3.27	0.046
Tyr	32.68^b	42.23^ab	49.50^a	45.12^a	1.99	0.041
Pro	14.65	15.77	20.77	21.00	1.71	0.441

¹⁾

Thr, threonine; Val, valine; Met, methionine; Ile, isoleucine; Leu, leucine; Phe, phenylalanine; Lys, lysine; His, histidine; Arg, arginine; Asp, aspartic acid; Ser, serine; Glu, glutamic acid; Gly, glycine; Ala, alanine; Cys, cysteine; Tyr, tyrosine; Pro, proline.

²⁾

TN(-1D), thermal-neutral condition; HS, heat stress condition; TN(2D), 2 d of thermal-neutral recovery; TN(5D), 5 d of thermal-neutral recovery.

^a,b

Mean values with Duncan analysis (p < 0.05).