The effect of dietary pectic oligosaccharide supplementation on intestinal health of broiler breeders with different egg-laying rates
The effect of dietary pectic oligosaccharide supplementation on intestinal health of broiler breeders with different egg-laying rates
Blog Article
This study was conducted to explore whether dietary pectic oligosaccharide (POS) supplementation could improve gut health of broiler breeders with different egg-laying rates.A 2 × 2 factorial design was used in this study.Two hundred fifty-six Arbor Acres broiler breeders (48 wk of age), including 128 average egg-laying rate and 128 low egg-laying equi-jec 7 rate (LELR) birds, were randomly fed with the diets supplemented with or without 200 mg kg−1 of POS (n = 8).The trial lasted for 8 wk.
Compared with average egg-laying rate broiler breeders, LELR broiler breeders had lower laying rate and qualified egg rate (P < 0.05), higher egg weight and feed conversion ratio (P < 0.05), higher malondialdehyde (MDA) levels in the jejunum (P < 0.05), higher IL-6 (P < 0.
05) and tumor necrosis factor α (TNF-α) (P = 0.07) mRNA expressions in the jejunal mucosa, and lower microflora diversity in cecal digesta.Dietary POS supplementation increased egg weight of broiler breeders (P < 0.05), enhanced superoxide dismutase activity in the jejunum (P < 0.
05), decreased MDA level in the jejunum (P < 0.05), upregulated zonula occluden 1 mRNA expression in the jejunal mucosa (P < 0.05), downregulated IL-6 and TNF-α mRNA expressions in the jejunal mucosa (P < 0.05), and regulated relative abundance of some microbiota (including the phylum and genus, P < 0.
05).In addition, in LELR broiler breeders, POS administration enhanced villus height (P = 0.08) and ZO-2 mRNA expression (P = 0.09) in the jejunal mucosa, alleviated the increasing MDA level in the jejunum (P < 0.
05) and IL-6 and TNF-α mRNA expressions in the jejunal mucosa (P < 0.05), and regulated relative abundance of some microbiota (including the phylum and genus, P < 0.05).These results suggest that supplementing POS in diets may elevate gut health via improvement of intestinal barrier function, antioxidant capacity, and microbiota composition read more in broiler breeders with different egg-laying rates.