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Effects of Dietary Starch Source on Nutrient and Energy Absorption via the Portal Vein of Growing Pigs
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作者 Qiuzhong Dai Kangning Wang +3 位作者 Yulong Yin Tiejun Li ruilin huang Yan Hu 《Journal of Animal Science and Biotechnology》 SCIE CAS 2010年第3期175-181,共7页
Four crossbred (Duroc x Landrace x Yorkshire) boars, weighing an average of 22.40 ± 1.08 kg and fitted with permanent catheters in their portal and mesenteric veins as well as their carotid artery,were utilized... Four crossbred (Duroc x Landrace x Yorkshire) boars, weighing an average of 22.40 ± 1.08 kg and fitted with permanent catheters in their portal and mesenteric veins as well as their carotid artery,were utilized in a 4 × 4 latin square design experiment in order to investigate the effects of different starch sources (maize ,brown rice, sticky rice, and resistant starch) on the absorption of energy sources through the portal vein. Portal blood flow averaged 30.68, 28.40, 29.99, and 30. 12 mL/min per kg BW for pigs fed the maize, brown rice, sticky rice, and resistant starch diets, respectively, and did not dif- fer (P 〉 0.05) between treatments. The absorptions of glucose, plasma ammonia, and total amino acids were significantly lower (P 〈 0.05 ) in pigs fed the resistant starch diet than pigs fed the other starch sources. In contrast, significantly ( P 〈 0.05 ) higher amounts of propionate and total volatile fatty acids were absorbed from the portal vein of pigs fed resistant starch than pigs fed diets based on maize, brown rice, or sticky rice. In addition, significantly (P 〈 0.05) more lactic acid was absorbed from the portal vein by pigs fed the sticky rice diet than pigs fed the other three diets. The energy absorbed from the portal vein in the form of glucose and amino-N as well as the total energy absorbed was significantly (P 〈 0.05) lower in pigs fed the resistant starch diet than pigs fed the other three starch sources. In contrast, the amount of energy absorbed in the form of volatile fatty acids was significantly (P 〈 0.05 ) higher in pigs fed resistance starch than pigs fed the other three starch sources. The total energy absorbed through the portal vein as a percentage of the gross energy and digestible energy consumed in pigs fed maize were 50.8% and 54.6%, respectively, which were significantly (P 〈 0.05 ) higher than the values in pigs fed resistant starch (41.5% and 46.6% respectively). The results indicate that energy is absorbed in different forms and with different utilization efficiencies in the digestive tract of pigs as a result of feeding different starch sources. Starch sources supplying most of their energy in the form of glucose had higher energy utilization efficiencies, while starch sources supplying most of their energy in the form of volatile fatty acids or lactic acid had lower energy utilization efficiencies. 展开更多
关键词 ENERGY growing pigs NUTRIENTS portal vein absorption starch source
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Oxidative stress, nutritional antioxidants and beyond 被引量:15
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作者 Qiuping Guo Fengna Li +5 位作者 Yehui Duan Chaoyue Wen Wenlong Wang Lingyu Zhang ruilin huang Yulong Yin 《Science China(Life Sciences)》 SCIE CAS CSCD 2020年第6期866-874,共9页
Free radical-induced oxidative stress contributes to the development of metabolic syndromes(Mets), including overweight,hyperglycemia, insulin resistance and pro-inflammatory state. Most free radicals are generated fr... Free radical-induced oxidative stress contributes to the development of metabolic syndromes(Mets), including overweight,hyperglycemia, insulin resistance and pro-inflammatory state. Most free radicals are generated from the mitochondrial electron transport chain;under physiological conditions, their levels are maintained by efficient antioxidant systems. A variety of transcription factors have been identified and characterized that control gene expression in response to oxidative stress status.Natural antioxidant compounds have been largely studied for their strong antioxidant capacities. This review discusses the recent progress in oxidative stress and mitochondrial dysfunction in Mets and highlights the anti-Mets, anti-oxidative, and antiinflammatory effect of polyphenols as potential nutritional therapy. 展开更多
关键词 reactive oxygen species oxidative stress mitochondrial dysfunction signal transduction nutritional antioxidant POLYPHENOLS
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Imbalanced dietary methionine-to-sulfur amino acid ratio can affect amino acid profiles, antioxidant capacity, and intestinal morphology of piglets 被引量:4
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作者 Miaomiao Bai Lei Wang +4 位作者 Hongnan Liu Kang Xu Jinping Deng ruilin huang Yulong Yin 《Animal Nutrition》 SCIE 2020年第4期447-456,共10页
Animal protein sources such as fishmeal and plasma powder are excellent and indispensable sources of energy,amino acid s,and minerals in animal production.Amino acid imbalance,especially methionine-to-sulfur amino aci... Animal protein sources such as fishmeal and plasma powder are excellent and indispensable sources of energy,amino acid s,and minerals in animal production.Amino acid imbalance,especially methionine-to-sulfur amino acid(Met:SAA)ratio,caused by an imbalance of animal protein meal leads to growth restriction.This study was conducted to evaluate the effects of imbalanced Met:SAA ratio supplementation of different animal protein source diets on growth performance,plasma amino acid profiles,antioxidant capacity and intestinal morphology in a piglet model.Twenty-four weaned piglets(castrated males;BW=10.46±0.34 kg),assigned randomly into 3 groups(8 piglets/group),were fed for 28 d.Three experimental diets of equal energy and crude protein levels were as follows:1)a corn-soybean basal diet with a Met:SAA ratio at 0.51(BD);2)a plasma powder diet with a low Met:SAA ratio at 0.41(L-MR);3)a fishmeal diet with a high Met:SAA ratio at0.61(H-MR).Results revealed that compared to BD,L-MR significantly decreased(P<0.05)the activities of plasma total antioxidant capacity and glutathione peroxidase,plasma amino acid profiles,and significantly reduced(P<0.05)villus height and crypt depth in the duodenum and jejunum.Additionally,L-MR significantly reduced(P<0.05)the mRNA expression level of solute carrier family 7 member 9(SIC7 A9)in the ileum,and significantly increased(P<0.05)mRNA expression levels of zonula occludens-1(ZO-1)in the duodenum,and Claudin-1,ZO-1,sodium-coupled neutral amino acid transporters 2(SNAT2)and SIC7 A7 in the j ejunum.HMR significantly increased(P<0.05)plasma SAA levels,and significantly reduced(P<0.05)average daily feed intake,villus height,and villus height-to-crypt depth(VH:CD)ratio in the ileum compared to BD.In conclusion,L-MR may result in oxidative stress and villous atrophy but proves beneficial in improving intestinal barrier function and the activity of amino acid transporters for compensatory growth.H-MR may impair intestinal growth and development for weaned piglets.The research provides a guidance on the adequate Met:SAA ratio(0.51)supplementation in diet structure for weaned piglets. 展开更多
关键词 Animal protein source Methionine-to-sulfur amino acid ratio Antioxidant capacity Intestinal morphology PIGLET
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Comparison of the meat quality and fatty acid profile of muscles in finishing Xiangcun Black pigs fed varied dietary energy levels 被引量:1
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作者 Can Yang Wenlong Wang +6 位作者 Xiaowu Tang ruilin huang Fengna Li Wenxuan Su Yulong Yin Chaoyue Wen Jian Liu 《Animal Nutrition》 SCIE CSCD 2022年第4期15-24,共10页
To study the effects of dietary energy level on the meat quality of different muscles in finishing pigs,400Xiangcun Black pigs(BW=79.55±4.77 kg)were randomly assigned to 5 treatments with varied calculated digest... To study the effects of dietary energy level on the meat quality of different muscles in finishing pigs,400Xiangcun Black pigs(BW=79.55±4.77 kg)were randomly assigned to 5 treatments with varied calculated digestive energy(DE)at 3,050,3,100,3,150,3,200 and 3,250 kcal/kg,respectively.Each treatment had 8replicates with 10 pigs per replicate.Meat quality,amino acid and fatty acid composition were tested in this study.No differences in average daily gain,average daily feed intake or feed-to-gain ratio(P>0.05)were observed among dietary treatments.Glycogen concentrations of longissimus dorsi(LD)muscle in DE3150was higher than those in other groups(P<0.05).The crude fat concentration of biceps femoris(BF)muscle in DE3250 tended to be higher than that in DE3150 and DE3100 groups(P<0.05).Pigs in DE3250 and DE3200 had higher fiber density and smaller cross-sectional area of BF muscle than those in DE3150(P<0.05).Pigs in DE3150 had the highest Cu concentration in LD muscle compared with those in DE3200,DE3250(P<0.05).The C16:1 proportion of LD muscle was lower(P<0.01)and C20:1 was higher(P<0.05)in DE3050 than that in the other dietary treatments.The C18:3n6 and C20:3n6 proportions of BF muscle in DE3150 were higher than those in DE 3050,DE3200 and DE3250(P<0.05).For LD muscle,m RNA expressions of type I and IIa MyHC in group DE3150 were higher than other treatments(P<0.01).The LD muscle in DE3150 expressed higher PPARd than in other groups(P<0.01).Pigs in DE3100 expressed higher FOX1 than in DE3200 and DE3250(P<0.05).Sterol-regulatory element binding proteins(SREBPa)mRNA expression decreased linearly when dietary energy level increased in BF muscle(P<0.01).In conclusion,a200 kcal/kg decrease in digestible energy for 4 consecutive weeks did not affect growth performance of Xiangcun Black pigs.Furthermore,LD and BF muscle respond differently to dietary energy level,and meat quality was improved by the medium energy level during the finishing phase. 展开更多
关键词 ENERGY Growth performance Fatty acid Myofibrillar morphology MUSCLE
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