Effects of Acidifiers and Spray-Dried Plasma Protein on Growth Performance, Gastrointestinal pH, Pepsin Activity and Intestinal Mucosal Morphology of Suckling Rabbits

WANG Qingzheng, GUO Zhiqiang, XIE Xiaohong, LEI Min, REN Yongjun, LI Congyan, LI Zhouquan

doi:10.3969/j.issn.1006-267x.2019.02.028

2019 , Vol. 31 >Issue 2: 713 - 720

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.02.028

Molecular Nutrition

Effects of Acidifiers and Spray-Dried Plasma Protein on Growth Performance, Gastrointestinal pH, Pepsin Activity and Intestinal Mucosal Morphology of Suckling Rabbits

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1. College of Animal Science and Technology, Southwest University, Chongqing 400715, China;
2. Sichuan Animal Science Academy, Chengdu 610066, China

Received date: 2018-07-13

Online published: 2019-02-18

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Abstract

The aim of this study was to investigate the effects of acidifiers and spray-dried plasma protein on growth performance, gastrointestinal pH, pepsin activity and intestinal mucosal morphology of suckling rabbits. A total of 120 nests of rabbits, mating and farrowing in the same period, were randomly divided into 4 groups. Each group had 5 replicates with 6 nests per replicate. During the experimental period, the rabbits in 4 groups were fed a basal diet (A group, control group), the basal diet with 0.1% acidifiers (B group), the basal diet with 0.3% spray-dried plasma (C group), the basal diet with 0.1% acidifiers and 0.3% spray-dried plasma (D group), respectively. The supplementary feeding began on 18 days of age until weaning at 35 days of age. The results showed that compared with the control group, the average body weight of rabbits on 28, 35 days of age in groups C and group D were significantly increased by 10.53%, 11.70% and 16.07%, 18.66%, respectively (P<0.05); the pH of stomach and duodenum on 28 and 35 days of age in groups B and group D were significantly decreased (P<0.05); the villus height of duodenum, jejunum and ileum on 28 and 35 days of age in groups C and D were significantly increased (P<0.05), and the crypt depth were significantly decreased (P<0.05); the pepsin activity in group D was significantly improved on 28 days of age (P<0.05), and on 28, 35 days of age, that in groups B and D were significantly improved (P<0.05). It is indicated that 0.1% acidifiers and 0.3% spray-dried plasma protein supplementation can both effectively improve the growth performance of suckling rabbits, and it's more effective when the diets have both of them.

Key words： acidifiers; spray-dried plasma; suckling rabbits; growth performance; intestinal mucosal morphology; pepsin activity

Cite this article

WANG Qingzheng, GUO Zhiqiang, XIE Xiaohong, LEI Min, REN Yongjun, LI Congyan, LI Zhouquan . Effects of Acidifiers and Spray-Dried Plasma Protein on Growth Performance, Gastrointestinal pH, Pepsin Activity and Intestinal Mucosal Morphology of Suckling Rabbits[J]. Chinese Journal of Animal Nutrition, 2019 , 31(2) : 713 -720 . DOI: 10.3969/j.issn.1006-267x.2019.02.028

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