Table 5.

Effects of rumen-protected methionine supplements on the synthesis of microbial crude protein, production of NH₃-N and pH using a rumen simulation technique (n = 4)

Items	Treatments				SEM	P-value
	HP	LP	LPLMet	LPHMet
pH before feeding*	6.65	6.67	6.66	6.68	0.01	0.83
pH after feeding (0–24 h)*	6.68	6.70	6.73	6.73	0.01	0.20
MCP (mg/mL)	3.18a	2.45b	2.62ab	3.10a	0.11	0.01
NH3-N (mg/100 mL)	18.43a	13.09b	13.39b	13.58b	0.80	0.02

MCP, microbial crude protein; NH₃-N, ammonia nitrogen; SEM, standard error of mean

^a,bSuperscripts values within the same row, are significantly different at (P < 0.05)

* The pH values have published an article of the same first author