Table 4. Effect of the Saccharomyces cerevisiae supplementation on the dry matter intake, milk production and composition in dairy cows that were fed different TMRs during heat stress

Items	TMR-1		TMR-2		SEM	p-value
	Control	T1	T2	T3		Treat	TMR	Treat × TMR
DMI (kg/d)	18.69b	21.13a	18.71b	21.67a	0.20	< 0.001	0.354	0.401
BW gain (kg)	−9.42	−0.08	2.42	−11.25	4.07	0.798	0.969	0.184
Milk yield (kg/d)	28.85	29.89	28.30	29.85	0.43	0.095	0.215	0.286
Fat (%)	3.54	3.69	3.56	3.70	0.07	0.308	0.887	0.991
Protein (%)	3.06	3.02	2.99	3.08	0.03	0.720	0.799	0.310
Lactose (%)	4.74	4.70	4.76	4.75	0.02	0.549	0.443	0.623
Total solids (%)	11.14b	12.16a	10.88b	12.29a	0.16	< 0.001	0.742	0.513
SCC (×103/mL)	202.0a	114.3b	237.8a	99.8b	81.73	0.002	0.476	0.875
MUN (mg/dL)	14.48a	7.25b	14.12a	6.85b	0.42	< 0.001	0.415	0.966

Treat, supplementation or not with S. cerevisiae culture fluid (5 mL/head, 2×10⁷ CFU/mL).
Denotes comparison made within rows (p < 0.05).
TMR, total mixed ration; DMI, dry matter intake; BW, body weight; SCC, somatic cell count; MUN ,milk urea nitrogen.