SWINE NUTRITION AND FEED

Effects of Flavonoids from Mulberry Leaves on Chemical Composition in Liver and Kidney of Bama Mini-Pigs

  • FENG Ganyi ,
  • LIU Yingying ,
  • HUANG Ruilin ,
  • ZHOU Ling
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  • 1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
    2. Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;
    3. Hunan Institute of Animal and Veterinary Science, Changsha 410131, China

Received date: 2021-03-03

  Online published: 2021-09-18

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Abstract

In order to study the effects of flavonoids from mulberry leaves (FML) on the tissue and organ development, composition and contents of conventional nutrients, amino acids and medium-long chain fatty acids in liver and kidney of Bama mini-pigs, a total of 60 crossbred progenies of Bama mini-pigs at fattening stage with body weight of (45.11±4.23) kg were randomly assigned into five groups consisted of three replicates each with four pigs per replicate. The pigs in the control group were fed a basal diet, and those in the experimental groups were fed the basal diets supplemented with 0.02%, 0.04%, 0.08% and 0.16% FML, respectively. The experiment lasted for 67 days, including a 7-day pre-trial period and a 60-day trial period. The results showed as follows:1) compared with the control group, dietary FML had no significant effects on the weights of head, heart, liver, spleen, kidney and suet of fattening pigs (P>0.05). 2) With the increase of FML supplemental level, the ether extract content in liver of fattening pigs was decreased, and the ether extract content in liver in 0.16% FML group was significantly lower than that in the control group and the 0.02% FML group (P<0.05). 3) Dietary FML reduced the most amino acid contents in liver of fattening pigs. The tyrosine content in liver in 0.04% FML group was significantly lower than that in the control group (P<0.05); while all amino acid contents in kidney among all groups were not significantly different (P>0.05). 4) Dietary FML linearly increased the methyl pentadecanoate (C15:0) content in liver of fattening pigs (P<0.05), quadratically increased the contents of palmitoleic acid (C16:1), heptadecanoic acid (C17:0), arachic acid (C20:0), eicosatetraenoic acid (C20:4n6) and saturated fatty acid (SFA) in liver (P<0.05), and quadratically decreased the contents of linolenic acid (C18:3n6), tetracosanoic acid (C24:0), unsaturated fatty acid (UFA), polyunsaturated fatty acid (PUFA) and n-6 PUFA in liver (P<0.05). Dietary FML quadratically increased the contents of C15:0, C18:3n6, α-linolenic acid (C18:3n3) and n-3 PUFA in kidney of finishing pigs (P<0.05), and quadratically decreased the contents of myristic acid (C14:0) and C16:1 in kidney (P<0.05). In conclusion, the appropriate supplemental level of FML can improve the original lipid metabolism in liver of finishing pigs, indicating a certain lipid-lowering effect. Dietary FML can reduce the most amino acid contents in liver. The effects of FML on SFA and UFA in liver and kidney of fattening pigs are quite different. However, the appropriate FML supplementation can increase the content of partial PUFA and decrease the content of partial SFA in liver and kidney. Therefore, the supplemental level of FML should be reasonably controlled in animal production in order to obtain a better fatty acid composition in liver and kidney.

Cite this article

FENG Ganyi , LIU Yingying , HUANG Ruilin , ZHOU Ling . Effects of Flavonoids from Mulberry Leaves on Chemical Composition in Liver and Kidney of Bama Mini-Pigs[J]. Chinese Journal of Animal Nutrition, 2021 , 33(9) : 4943 -4957 . DOI: 10.3969/j.issn.1006-267x.2021.09.015

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