Effect of diet supplementation with chelated zinc, copper and manganese on hoof lesions of loose housed sows

Table 1 Associations between the severity of hoof lesions and the dietary status of the sows

Foot site	Foot location	Odds ratio^a (After/Before)	95 % CI	Toe location	Odds ratio^a (After/Before)	95 % CI
SL	Front	0.28*	0.21, 0.38	NA	-	-
SL	Rear	0.48*	0.37, 0.61	NA	-	-
HL	Front	0.46*	0.37, 0.57	Medial	0.34*	0.27, 0.44
HL	Rear	0.69*	0.55, 0.82	Lateral	0.46*	0.37, 0.57
WL	Front	0.49*	0.35, 0.69	NA	-	-
WL	Rear	0.78	0.57, 1.07	NA	-	-
WA	Front	0.32*	0.25, 0.42	NA	-	-
WA	Rear	0.50*	0.40, 0.66	NA	-	-
TL	Front	0.26*	0.19, 0.35	Medial	0.36*	0.28, 0.51
TL	Rear	0.88	0.70, 1.13	Lateral	0.26*	0.19, 0.35
DCL	Front	0.57*	0.46, 0.70	NA	-	-
DCL	Rear	0.88	0.74, 1.07	NA	-	-

SL sole, HL heel, WL white line, WA wall, TL toe length, DCL dew claw length
Mixed-effect ordinal logistic regression models associating the severity of lesions (scaled from 0 to 2) on six foot sites of 518 sows, with a diet supplemented with organic trace minerals over a period of one or two gestations (After), following a conventional inorganic mineral source diet (Before), in terms of its interaction with the location of the foot (front or rear) or the location of the toe (lateral or medial)
^aOdds ratios were adjusted for foot location (front or rear), toe location (lateral or medial), sows’ parity and farm
NA not applicable; the effect of the applied diet was not associated with toe location
*P < 0.05

ISSN: 2055-5660