Comparing the Effect of Oral Supplementation of Vitamin E, Injective Vitamin E and Selenium or Both during Late Pregnancy on Production and Reproductive Performance and Immune Function of Dairy Cows and Calves

Table 5

Effect of oral supplementation of vitamin E with or without injective vitamin E on reproductive performance in multiparous dairy cows.

Item	Treatments
	Injection	Injections + oral	Oral
Mastitis	2	1	2
Metritis	2	0	0
Retained placenta	0	0	1
Open days	118.41±46.08	143.06±47.62	118.36±40.90
Service per conception	2.00±1.28	3.07±1.75	2.36±1.21