Effects of Alfalfa Meal on Growth Performance, Serum Biochemical Indexes, Carcass Quality and Economic Benefit of Finishing Pigs

LYU Xianzhao, WANG Chengzhang, QIU Xiaodong, YAO Guolei, XIAO Junnan, SHI Yinghua, ZHU Xiaoyan

doi:10.3969/j.issn.1006-267x.2018.05.012

2018 , Vol. 30 >Issue 5: 1693 - 1702

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.05.012

Molecular Nutrition

Effects of Alfalfa Meal on Growth Performance, Serum Biochemical Indexes, Carcass Quality and Economic Benefit of Finishing Pigs

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1. College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China;
2. Henan Xinda Animal Husbandry Co., Ltd., Zhengzhou 450000, China

Received date: 2017-11-02

Online published: 2018-05-06

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Abstract

This experiment was conducted to study the effects of alfalfa meal on growth performance, serum biochemical indexes, carcass quality and economic benefit of finishing pigs. One hundred and thirty healthy Landrace×Big or Big×Landrace finishing pigs with average body weight of (60.28±0.73) kg were randomly divided into 5 groups with 26 replicates in each group and 1 pig in each replicate. The experimental diets were supplemented with 0 (control group), 5%, 10%, 20% and 30% alfalfa meal, respectively. The pre-experiment lasted for 7 days, and the experiment lasted for 72 days. The results showed as follows:1) at 60 to 100 kg period, 5% alfalfa meal group got the highest average daily gain (ADG) and the lowest weight gain cost. 2) There were no significant differences on the contents of total protein, albumin, globulin and total cholesterol and low density lipoprotein cholesterol in serum among all groups (P>0.05). Compared with control group, the serum urea nitrogen content of 5% and 30% alfalfa meal groups was significantly decreased (P<0.05), the serum glucose content of 5% and 10% alfalfa meal groups was significantly increased (P<0.05), the serum triglyceride content of 30% alfalfa meal group was significantly decreased (P<0.01), the serum high density lipoprotein cholesterol (HDL-C) content of 10% and 30% alfalfa meal groups were increased significantly (P<0.05). The activities of alanine aminotransferase (ALT) and aspartate transaminase (AST) in serum of 10% and 20% alfalfa meal groups were significantly lower than that of control group and 5% alfalfa meal group (P < 0.01, P < 0.05), respectively, but no significant difference between control group and 5% alfalfa meal group (P>0.05). 3) Compared with control group, the lean meat percentage of 20% alfalfa meal group was increased by 7.99% (P<0.05). There were no significant differences on the carcass weight, dressing percentage, back fat thickness, loin-eye area, carcass oblique length, carcass length among all groups (P>0.05). 4) The muscle protein content of 20% alfalfa meal group was significantly higher than that of control group (P<0.05). In conclusion, adding 5% alfalfa meal in the diet can reduce weight gain cost and increase economic benefits; while adding 20% alfalfa meal in the diet can increase the lean meat percentage and muscle protein content, improve the pork quality.

Key words： alfalfa meal; finishing pigs; serum biochemical indexes; carcass quality; muscle protein

Cite this article

LYU Xianzhao, WANG Chengzhang, QIU Xiaodong, YAO Guolei, XIAO Junnan, SHI Yinghua, ZHU Xiaoyan . Effects of Alfalfa Meal on Growth Performance, Serum Biochemical Indexes, Carcass Quality and Economic Benefit of Finishing Pigs[J]. Chinese Journal of Animal Nutrition, 2018 , 30(5) : 1693 -1702 . DOI: 10.3969/j.issn.1006-267x.2018.05.012

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