Effects of Mulberry Leaf Extract on Growth Performance, Nutrient Apparent Digestibility and Serum Biochemical Indexes of Growing Pigs

TANG Jiaxi; YU Guojun; CUI Qingming; DENG Yuan; LI Huali; HU Xionggui; XUE Junjing; CHEN Chen; REN Huibo; PENG Tianshu; ZHU Ji; TIAN Kexiong; LIU Yingying

doi:10.3969/j.issn.1006-267x.2022.05.016

2022 , Vol. 34 >Issue 5: 2862 - 2871

DOI: https://doi.org/10.3969/j.issn.1006-267x.2022.05.016

RESEARCH PAPER

Effects of Mulberry Leaf Extract on Growth Performance, Nutrient Apparent Digestibility and Serum Biochemical Indexes of Growing Pigs

TANG Jiaxi ,
YU Guojun ,
CUI Qingming ,
DENG Yuan ,
LI Huali ,
HU Xionggui ,
XUE Junjing ,
CHEN Chen ,
REN Huibo ,
PENG Tianshu ,
ZHU Ji ,
TIAN Kexiong ,
LIU Yingying

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1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
2. Hunan Institute of Animal Husbandry and Veterinary Medicine, Changsha 410131, China

Received date: 2021-10-24

Online published: 2022-05-14

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Abstract

This experiment was conducted to investigate the effects of different supplemental levels of mulberry leaf extract (MLE) on growth performance, nutrient apparent digestibility and serum biochemical indexes of growing pigs. A total of 240 healthy hybrid pigs F1 (Duroc×Ningxiang pig) with the average weight of (23.84±3.11) kg were selected and randomly divided into 4 groups with 6 replicates per group and 10 pigs per replicate. The pigs in control group were fed a basal diet, while those in three experimental groups were fed the basal diet supplemented with 0.05%, 0.10% and 0.15% MLE, respectively. Pigs were fed ad libitum feed and drinking water. The experiment lasted for 43 days after an adaptation period of 5 days. The results showed as follows:1) with the increase of MLE supplemental level, the final body weight of growing pigs increased linearly (P<0.05), and the average daily feed intake (ADFI) and average daily gain (ADG) showed linear and quadratic changes (P<0.05). Compared with the control group, the final body weight, ADFI and ADG of growing pigs in 0.10% and 0.15% MLE groups were significantly increased (P<0.05). 2) The apparent digestibility of gross energy and organic matter of growing pigs had linear and quadratic changes with the increase of MLE supplemental level (P<0.05). Compared with the control group, the gross energy and organic matter apparent digestibility in 0.05%, 0.10% and 0.15% MLE groups was significantly increased (P<0.05). The apparent digestibility of ether extract was linearly increased with the increase of MLE supplemental level (P<0.05). The apparent digestibility of crude fiber showed a quadratic change with the increase of MLE supplemental level (P<0.05). 3) The contents of immunoglobulin A, immunoglobulin G and immunoglobulin M in serum of growing pigs increased linearly with the increase of MLE supplemental level (P<0.05). The contents of above three kinds of immunoglobulins in 0.10% and 0.15% MLE groups were significantly higher than those in control group (P<0.05). 4) The contents of total cholesterol (TCHO) and low-density lipoprotein (LDL) in serum of growing pigs decreased linearly with the increase of MLE supplemental level (P<0.05). The serum TCHO and LDL contents in 0.10% and 0.15% MLE groups were significantly lower than those in control group (P<0.05). These findings suggest that dietary supplemented with MLE can improve the growth performance, increase the apparent digestibility of nutrients, enhance the body immunity, and regulate the blood lipid metabolism of growing pigs. The recommended supplemental level of MLE in the diet of growing pigs is 0.10% under this experimental condition.

Key words： mulberry leaf extract; growing pigs; growth performance; nutrient apparent digestibility; serum biochemical indexes

Cite this article

TANG Jiaxi , YU Guojun , CUI Qingming , DENG Yuan , LI Huali , HU Xionggui , XUE Junjing , CHEN Chen , REN Huibo , PENG Tianshu , ZHU Ji , TIAN Kexiong , LIU Yingying . Effects of Mulberry Leaf Extract on Growth Performance, Nutrient Apparent Digestibility and Serum Biochemical Indexes of Growing Pigs[J]. Chinese Journal of Animal Nutrition, 2022 , 34(5) : 2862 -2871 . DOI: 10.3969/j.issn.1006-267x.2022.05.016

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