Early Indications of Laminitis Susceptibility

'Pinking'

'Pinking' in the white line

One of these is ‘Pinking’ of the White Line.

The white line is the waxy substance at the base of the laminae between the wall and the sole.

When it is intact and tight it ‘seals’ this area and functions as a barrier preventing dirt, bacteria/pathogens, or any foreign material from entering the hoof capsule via this route.

Stretched white line

A ‘stretched’ white line (above) affords no such protection and is a precursor to ‘white line disease’, seedy toe and hoof abscesses. Not only that but little stones tend to get stuck in there and sooner or later splits in the hoof wall appear.

This is a very good reason to insist on a trim cycle that maintains the integrity of the white line. (Usually 4-5 weeks).

So what causes the ‘pinking/staining’ of the white line?

Sub-Clinical Laminitis is a metabolic state where there have been changes to the biochemistry which precede any early physical signs such as a shortened stride, stilted movement, reluctance to turn, or an easily detectable digital pulse.

‘Pinking’ of the white line is a Red Flag because it means that blood supply to the laminae has been compromised, even if it was temporary.

Metabolic changes caused by diet (see previous post) cause microscopic changes, increased permeability of the epithelial lining of the tiny capillaries (micro-vasculature) that feed the internal hoof structures including the laminae, causing them to leak blood/fluid and this sometimes stains the white line.

Should you be concerned?

In our experience it is a sign that adjustments to forage and feed are needed.