. 2019 Oct 23;6(1):61–68. doi: 10.1016/j.aninu.2019.08.003

Table 5.

Influence of different supplemental sources of Mn, Zn and Cu on colostrum and milk performance of the cows.

Item	Diets				SEM	P-value
Item	Control	Mineral-sulphate	Mineral-glycine	Mineral-methionine	SEM	P-value
Colostrum
Yield, kg/first 2 milkings	9.15^b	9.8^ab	10.9^a	10.0^ab	0.55	0.041
Protein, %	12.4	12.8	13.1	12.4	0.23	0.22
Fat, %	4.52	4.55	4.78	4.24	0.19	0.27
Lactose, %	3.23	3.11	3.28	3.08	0.07	0.26
Solids non-fat, %	21.0	20.7	21.4	20.4	0.37	0.32
Milk (d 1 to 21)
Yield, kg/d	41.6^b	44.1^a	44.0^a	43.7^ab	0.75	0.039
Protein, %	3.45	3.44	3.44	3.47	0.12	0.94
Fat, %	3.68	3.82	3.89	3.78	0.11	0.51
Lactose, %	4.69	4.70	4.68	4.65	0.23	0.95
Solids non-fat, %	8.80	8.85	8.86	8.75	0.17	0.84
Somatic cells, × 10³/mL	85.7^a	83.5^ab	83.7^ab	82.0^b	1.23	0.043
Milk/DMI	1.83	1.76	1.78	1.73	0.31	0.93
Milk (d 22 to 100)
Yield, kg/d	43.8^b	46.3^a	46.1^a	46.5^a	0.61	0.025
Protein, %	3.22	3.14	3.19	2.99	0.09	0.36
Fat, %	3.66	3.60	3.45	3.61	0.18	0.70
Lactose, %	4.75	4.80	4.80	4.85	0.11	0.75
Solids non-fat, %	8.39	8.46	8.50	8.42	0.26	0.89
Somatic cells, × 10³/mL	64.5^a	60.0^b	60.1^b	59.8^b	1.14	0.037
Milk/DMI	1.80	1.77	1.77	1.78	0.27	0.95

SEM = standard error of the means; DMI = dry matter intake.

^{a, b}Within a row, means without a common uppercase superscript differ (P < 0.05).