Table 3 Histochemical results and affinity for different lectins in the anterior-mid intestinal mucosa of gilthead seabream (Sparus aurata) fed experimental low fishmeal diets containing Debaryomyces hansenii (1.1%, 17.2 × 10⁵ CFU; Yeast diet) or devoid of the probiotic (Control diet)

General histochemistry

 Neutral glycoproteins

1–2

1–2

 Carboxylated glycoproteins

1–3

1–4

 Weakly inonised sulphated glycoconjugates

2–3

3

 Strongly ionised sulphated glycoconjugates

2–3

2–3

Lectin histochemistry

 ConA (Man/Glu)

0–1

0–1

 WGA (βGlcNAc > NeuNAc/sialic acids/NANA)

2–3

1–2

 SNA (Neur5Acα2; sialic acids/NANA)

0–1

0–1

 SBA (α/β GalNAc)

0–3

2–3

 UEA-I (L-Fuc)

0

0