Effects of Different Levels of Sweeteners Extracted from Plants on Fodder Preference, Growth Performance and Serum Biochemical Indexes of Weaned Piglets

WANG Jing; LI Fangfang; ZHANG Ruiyang; ZHU Yujing; JIANG Mingzheng; HUANG Tiejun; HE Maolong; ZHANG Yong

doi:10.3969/j.issn.1006-267x.2019.09.040

2019 , Vol. 31 >Issue 9: 4262 - 4269

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.09.040

Effects of Different Levels of Sweeteners Extracted from Plants on Fodder Preference, Growth Performance and Serum Biochemical Indexes of Weaned Piglets

WANG Jing ,
LI Fangfang ,
ZHANG Ruiyang ,
ZHU Yujing ,
JIANG Mingzheng ,
HUANG Tiejun ,
HE Maolong ,
ZHANG Yong

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1. College of Animal Sciences and Veterinary Sciences, Shenyang Agricultural University, Shenyang 110866, China;
2. Lucta(Guangzhou) Flavors Co., Ltd., Guangzhou 510730, China

Received date: 2019-02-28

Online published: 2019-09-17

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Abstract

This study was conducted to study the effects of different levels of sweeteners extracted from plants (SEP) on fodder preference, growth performance and serum biochemical indexes of weaned piglets. The experiment consisted two parts:1) the fodder preference experiment was a bidirectional selection test. Thirty-six piglets at 24-day-old were divided into 3 groups, with 4 replicates per group and 3 piglets per replicate. Piglets in the control group were fed a basal diet, and the other experimental groups were fed the basal diet supplemented with 0.2 g/kg saccharin sodium (SS), 0.2 and 0.4 g/kg SEP, respectively. The test lasted for 5 days, and tested the fodder preference and partial eclipse index of weaned piglets; 2) In the growth experiment, one hundred and sixty piglets with similar body weight and from 16 sows with the same genetic background and physiological condition (10 piglets from 1 sow) were randomly divided into 4 groups with 4 replicates per group and 10 piglets per replicate. The test lasted for 35 days. Piglets in the control group were fed a basal diet, and the other experimental groups were fed the basal diet supplemented with 0.2 g/kg SS, 0.2 and 0.4 g/kg SEP, respectively. The results showed as follows:1) the piglets had a medium-high fodder preference of diets with 0.2 and 0.4 g/kg SEP (P<0.05). 2) Compared with the control group, the average daily feed intake and final body weight in experimental groups increased significantly (P<0.05), and the average daily feed intake and final body weight in 0.2 and 0.4 g/kg SEP groups were significantly higher than those in 0.2 g/kg SS group (P<0.05). Compared with control group and 0.2 g/kg SS group, adding 0.2 and 0.4 g/kg SEP significantly increased the average daily gain (P<0.05), and significantly decreased the feed/gain (P<0.05). 3) Compared with the control group, adding 0.2 g/kg SEP significantly decreased the serum cortisol content (P<0.05); adding 0.4 g/kg SEP significantly decreased the serum noradrenaline content (P<0.05). These results suggest that the feeding effect of SEP is better than that of SS. The supplementation of SEP can increase average daily feed intake and reduced feed/gain, then improve the growth performance. The recommended content of SEP is 0.2 g/kg under this test condition.

Key words： piglet weaned stress; SEP; fodder preference; growth performance; serum biochemical indexes

Cite this article

WANG Jing , LI Fangfang , ZHANG Ruiyang , ZHU Yujing , JIANG Mingzheng , HUANG Tiejun , HE Maolong , ZHANG Yong . Effects of Different Levels of Sweeteners Extracted from Plants on Fodder Preference, Growth Performance and Serum Biochemical Indexes of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2019 , 31(9) : 4262 -4269 . DOI: 10.3969/j.issn.1006-267x.2019.09.040

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