首页|Flavonoids from mulberry leaves inhibit fat production and improve fatty acid distribution in adipose tissue in finishing pigs

Flavonoids from mulberry leaves inhibit fat production and improve fatty acid distribution in adipose tissue in finishing pigs

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This study evaluated the effects of flavonoids from mulberry leaves(FML)on plasma biochemical indices,serum activities of lipid metabolism-related enzymes,fat morphology,fatty acid composition,and lipid metabolism in different adipose tissues of finishing pigs.We used 120 Chinese hybrid barrows of Berkshire and Bama mini-pigs with an average initial body weight of 45.11±4.23 kg.The pigs were randomly assigned to five treatment groups and fed a control diet based on corn,soybean meal,and wheat bran or a control diet supplemented with 0.02％,0.04％,0.08％,or 0.16％FML.Each experimental group had six replicates(pens),with four pigs per pen.After a 7-d adaptation period,the feeding trial was conducted for 58 d.Blood and adipose tissue samples were collected from 30 pigs(one pig per pen)at the end of the test.The results showed that FML supplementation significantly decreased the feed intake to body gain ratio,the plasma concentrations of total cholesterol and free fatty acids,and the serum activity of 3-hydroxy-3-methylglutaryl coenzyme A reductase(linear or quadratic effects,P＜0.05),and decreased the plasma triglyceride concentration(quadratic,P=0.07).Increasing FML supplementation increased the average daily gain and serum activities of lipoprotein lipase(linear and quadratic effects,P＜0.05)and adipose triglyceride lipase(linear,P＜0.05).Dietary FML supplementation decreased the adipocyte area in the dorsal subcutaneous adipose(DSA)tissue of finishing pigs(linear,P=0.05)and increased the adipocyte area in the visceral adipose tissue(quadratic,P＜0.01).Increasing FML supplementation decreased the C20:1 content in DSA,abdominal subcutaneous adipose,and visceral adipose tissues of finishing pigs(P＜0.05)and increased the C18:3n3 and n-3 PUFA contents(P＜0.05).The lipid metabolism genes were regulated by the PPARy-LXRa-ABCA1 signaling pathway,and their expressions differed in different adipose tissues.These findings suggest that FML improved growth performance,regulated lipid metabolism,inhibited fat production,and improved fatty acid distribution in the adipose tissue of finishing pigs,thereby improving pig fat's nutritional quality and health value.

Finishing pigMulberry leafFlavonoidLipid metabolismFatty acidLard

Yingying Liu、Yinglin Peng、Chen Chen、Huibo Ren、Ji Zhu、Yuan Deng、Qingming Cui、Xionggui Hu、Jianhua He、Huali Li、Xinghui Zhu、Yulong Yin、Jun He、Yi Xiao

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College of Animal Science and Technology,Hunan Agricultural University,Changsha,410128,China

Hunan Institute of Animal and Veterinary Science,Changsha,410131,China

Key Laboratory of Conservation and Genetic Analysis of Local Pig Breed Germplasm Resources,Changsha,410131,China

College of Information and Intelligence,Hunan Agricultural University,Changsha,410128,China

Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha,410125,China

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Hunan Province Key R&D Program ProjectNatural Science Foundation of Hunan ProvinceInnovation Platform and Talent Plan Program of Hunan ProvinceNational Natural science Foundation of China

2020NK20332022JJ303172022NK414531972600

2024

10.1016/j.aninu.2023.11.003

动物营养(英文)

动物营养(英文)

CSTPCD
ISSN：
年,卷(期)：2024.16(1)
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