Molecular Nutrition

Effects of Dietary Myriophyllum elatinoides on Growth Performance, Serum Biochemical Indexes and Carcass Quality of Finishing Pigs

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  • 1. Key Laboratory of Agro-Ecological Processes in Subtropical Region, Provincial Engineering Research Center of Healthy Livestock, Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;
    2. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China

Received date: 2017-03-27

  Online published: 2017-09-28

Abstract

This experiment was conducted to study the effects of dietary Myriophyllum elatinoides on growth performance, serum biochemical indexes and carcass quality of finishing pigs. Forty healthy "Duroc×Landrace×Yorkshire" hybrid pigs with initial weight of (50.20±2.18) kg were randomly divided into four groups with ten replicates per group and one pig per replicate according single factor complete randomized trial design. The pigs in group Ⅰ (control group) were fed a basal diet, while the others in group Ⅱ, Ⅲ and Ⅳ were fed the basal diet supplemented with 5%, 10% and 15% Myriophyllum elatinoides. The experiment lasted for 60 days. The results showed as follows:1) compared with the control group, final weight, average daily gain and the ratio of feed to gain of finishing pigs in groups Ⅱ and Ⅲ had no significant differences (P>0.05). Compared with the control group, final weight and average daily gain in group Ⅳ were significantly decreased (P<0.05), and the ratio of feed to gain in group Ⅳ was significantly increased (P<0.05). 2) There were no significant differences in the contents of total protein, urea nitrogen, total cholesterol, triglyceride, high density lipoprotein and low density lipoprotein and the activity of aspartate aminotransferase in serum of finishing pigs between all groups (P>0.05). The activity of alanine aminotransferase in serum in group Ⅲ and the content of albumin in serum in group Ⅳ were significantly lower than that in the control group (P<0.05). 3) There were no significant differences in carcass percentage, lean meat percentage, dressing percentage, carcass oblique length, meat color, shear force and marbling score of finishing pigs between all groups (P>0.05). Compared with the control group, average backfat thickness in groups Ⅲ and Ⅳ and loin eye area in group Ⅳ were significantly decreased (P<0.05), and drip loss in group Ⅲ had a decrease trend (P>0.05), and pH45 min and pH24 h in groups Ⅱ and Ⅲ had an increase trend (P>0.05). In conclusion, dietary 10% Myriophyllum elatinoides has no significant effects on growth performance, can improve serum biochemical indexes, reduce average backfat thickness, decrease the speed of muscle pH, reduce drip loss and improve pork quality of finishing pigs.

Cite this article

WU Fei, CHEN Jiashun, LIU Feng, LI Yuyuan, WU Jinshui, XIAO Runlin, YIN Yulong, YAO Kang . Effects of Dietary Myriophyllum elatinoides on Growth Performance, Serum Biochemical Indexes and Carcass Quality of Finishing Pigs[J]. Chinese Journal of Animal Nutrition, 2017 , 29(10) : 3657 -3665 . DOI: 10.3969/j.issn.1006-267x.2017.10.028

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