Effects of Fermented Mulberry Leaves on Growth Performance, Carcass Quality and Muscle Nutrients of Growing-Finishing Pigs

HU Hongmei; HAO Lihong; WANG Huaizhong; LIN Song; WANG Yanping; ZHAO Xueyan; WANG Yong; DING Jian; WANG Cheng

doi:10.3969/j.issn.1006-267x.2021.11.012

2021 , Vol. 33 >Issue 11: 6104 - 6113

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.11.012

SWINE NUTRITION AND FEED

Effects of Fermented Mulberry Leaves on Growth Performance, Carcass Quality and Muscle Nutrients of Growing-Finishing Pigs

HU Hongmei ,
HAO Lihong ,
WANG Huaizhong ,
LIN Song ,
WANG Yanping ,
ZHAO Xueyan ,
WANG Yong ,
DING Jian ,
WANG Cheng

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1. Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Ji'nan 250100, China;
2. Key Laboratory of Disease Control and Animal Breeding of Shandong Province, Ji'nan 250100, China;
3. Jinan Animal Husbandry Technology Extension Station, Ji'nan 250000, China;
4. National Animal Husbandry Station, Beijing 100125, China

Received date: 2021-04-23

Online published: 2021-11-10

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Abstract

This experiment was conducted to investigate the effects of dietary fermented mulberry leaves on growth performance, carcass quality and muscle nutrients of growing-finishing pigs. Ninety-six healthy Duroc×Landrace×Yorkshire commercial pigs with a body weight of (35.00±4.32) kg at similar days of age were randomly divided into 4 groups with 4 replicates per group and 6 pigs per replicate. The pigs in the control group were fed a corn-soybean meal type basal diet, and those in the experimental groups Ⅰ, Ⅱ and Ⅲ were fed the basal diet supplemented with 4%, 8% and 12% fermented mulberry leaves in growing stage (35 to 70 kg), and supplemented with 12%, 15% and 18% fermented mulberry leaves in finishing stage (71 to 130 kg), respectively. The proportion of fermented mulberry leaves replacing soybean meal in growing stage and finishing stage in experimental groups Ⅰ, Ⅱ and Ⅲ was 1.0%, 2.0%, 3.0% and 3.0%, 3.8% and 4.5%, respectively. The experiment lasted for 128 days (50 days for growing stage and 78 days for finishing stage). The results showed as follows:1) compared with the control group, dietary 4% and 8% fermented mulberry leaves had no significant effects on the average daily gain (ADG) and feed to gain ratio (F/G) of experimental pigs in growing stage (P>0.05), but ADG was extremely significantly decreased when the supplemental level reached 12% (P<0.01). Dietary 12% fermented mulberry leaves had no significant effects on ADG and F/G in finishing stage (P>0.05), but ADG was extremely significantly decreased when the supplemental level reached 15% and 18% (P<0.01). Dietary 4% and 12% fermented mulberry leaves in the growing and finishing stages respectively had no significant effects on ADG and F/G in the whole stage (P>0.05), but ADG was extremely significantly decreased when the supplemental level reached 8%, 15% and 12%, 18% (P<0.01), respectively. 2) Compared with the control group, dietary fermented mulberry leaves had no significant effects on carcass quality and contents of crude fat, crude protein, amino acid and nucleotide in muscle of growing-finishing pigs (P>0.05), and the hypoxanthine nucleotide content in muscle increased when 4% fermented mulberry leaves were added in growing stage and 12% fermented mulberry leaves were added in finishing stage (P>0.05). Dietary 8% (in growing stage) and 15% (in finishing stage) fermented mulberry leaves decreased the contents of total fatty acids, saturated fatty acids and monounsaturated fatty acids in muscle (P>0.05). In conclusion, the appropriate supplemental level of fermented mulberry leaves are 4% and 12% in the diets for pigs during growing and finishing stages, respectively.

Key words： growing-finishing pigs; fermented mulberry leaves; growth performance; carcass quality; muscle nutrients

Cite this article

HU Hongmei , HAO Lihong , WANG Huaizhong , LIN Song , WANG Yanping , ZHAO Xueyan , WANG Yong , DING Jian , WANG Cheng . Effects of Fermented Mulberry Leaves on Growth Performance, Carcass Quality and Muscle Nutrients of Growing-Finishing Pigs[J]. Chinese Journal of Animal Nutrition, 2021 , 33(11) : 6104 -6113 . DOI: 10.3969/j.issn.1006-267x.2021.11.012

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