Effect of yeast polysaccharide on some hematologic parameter and gut morphology in channel catfish (Ictalurus punctatus).

Abstract:

:A study was conducted to investigate the effect of dietary yeast polysaccharides on some hematologic parameters and intestinal morphology of channel catfish. Channel catfish were fed diets containing yeast polysaccharides at 0 (control), 0.1, 0.2, or 0.3 % for 7 weeks. Each diet was provided to 10 channel catfish specimens (5.82 ± 0.13 g initial weight) replicated 3 times in individual 250 L fiberglass tanks. Some hematologic parameters, leukocyte phagocytic activity, and intestinal morphology were monitored. After 7 weeks of trial, 0.2 % yeast polysaccharides resulted in significantly higher (P < 0.05) monocyte numbers. Furthermore, fish fed 0.2 % yeast polysaccharide diet had higher (P < 0.05) phagocytic rate of leukocyte. And 0.3 % yeast polysaccharide enhanced (P < 0.05) phagocytic index of leukocyte. Histological evaluation showed yeast polysaccharide supplementation increased the height of intestine fold (0.1, 0.2 and 0.3 %) and the thick of muscular layers (0.2 %) in intestine (P < 0.05). In addition, 0.1 and 0.3 % yeast polysaccharide supplementation improved the number of goblet cells (P < 0.05). The results of this trial indicate that yeast polysaccharides supplementation could affect blood monocytes, improve leukocytes phagocytic activity, and the development of intestine in channel catfish.

journal_name

Fish Physiol Biochem

authors

Zhu H,Liu H,Yan J,Wang R,Liu L

doi

10.1007/s10695-012-9631-3

subject

Has Abstract

pub_date

2012-10-01 00:00:00

pages

1441-7

issue

5

eissn

0920-1742

issn

1573-5168

journal_volume

38

pub_type

杂志文章,随机对照试验