Premature farrowing and stillbirths in two organic sow farms due to riboflavin deficiency

Table 6 Average levels of vitamins detected in the feed of gestating sows, and the minimum requirements suggested by the National Research Council (NRC) and for Topigs sows [23, 24]

Vitamin	Unit of measurement	Levels in gestating sow feed N = 29	Levels according to NRC requirements [23]	Levels according to Topigs sow feed [24]
A	UI/kg of diet	9600	4000	10,000
D3		1600	800	2000
E		80	44	40
K3	mg/kg of diet	3.60	0.50	1
B1		1.60	1.00	1
B2		1.25	3.75	4
B6		2.00	1.00	1
B12		0.040	0.015	0.03

ISSN: 2055-5660