Table 1.
Means (± SD) of the histological measurements of hoof lamellar tissue of the Marajoara (MJ), Puruca (MP) and Mangalarga Marchador (MM) breeds.
Fig 1.
Photomicrographs of the equine hoof secondary epidermal lamellae (SEL) of the equine (20x magnification (100 μm), and periodic acid-Schiff staining).
Note the predominance of SEL with a tapered shape and basal epithelial cells with condensed nuclei in the biopsy taken from a Mangalarga Marchador breed horse (A) compared with the predominance of rounded and not condensed nuclei in the basal epithelial in a biopsy taken from Puruca breed horse (B).
Fig 2.
Photomicrograph of the hoof lamellar tissue from Mangalarga Marchador (MM) horses (10x magnification (200 μm), periodic acid-Schiff staining).
(A) An axial portion of a primary epidermal lamina (PEL) is observed, with secondary epidermal lamellae (SEL) of tapered shape (arrows), with a predominance of basal epithelial cells with condensed nuclei and missing the perpendicular orientation to the basal membrane. (B) Note unusual proliferation and cornification of epidermal epithelial tissue at the abaxial border of a primary dermal lamina (arrow) (C and D) Areas of discontinuity are observed in the primary epidermal lamellae (arrows).
Table 2.
Means (± SD) of the percentages of occurrence of different types of extremities in the primary epidermal layers (PEL) and primary dermal layers (PDL) as previously reported [22] of the lamellar tissue of horses, of the Marajoara (MJ), Puruca (MP) and Mangalarga Marchador (MM) breeds.
Table 3.
Means (± SD) of the percentages of occurrence of different types of extremities in the secondary epidermal lamellae (SEL) of the lamellar tissue of horses, of the Marajoara (MJ), Puruca (MP) and Mangalarga Marchador (MM) breeds.