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Net absorption and liver metabolism of amino acids and heat production of portaldrained viscera and liver in multiparous sows during transition and lactation

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Journal of Animal Science and Biotechnology 2020年第2期11卷 424-439页

作者： Liang Hu Niels Bastian Kristensen lianqiang che De Wu Peter Kappel Theil Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education Institute of Animal NutritionSichuan Agricultural UniversityNo.211Huimin RoadWenjiang DistrictChengduSichuan 611130People’s Republic of China Department of Animal Science Faculty of Science and TechnologyAarhus UniversityDK-8830 TjeleDenmark Present address:SEGES Danish Pig Research Centre DK-1609 CopenhagenDenmark

Background:Determination of nutrient requirements in the late gestating and lactating sows is essential to optimize sow *** objectives of the present study were to quantify amino acid(AA)fluxes and heat production across portal-drained viscera(PDV)and liver in multiparous sows during transition and ***:Eight second parity sows were fitted with indwelling catheters in the femoral artery and in the mesenteric,portal and hepatic *** hourly sets of blood samples were taken starting 0.5 h before feeding at−10,−3,+3,and+17 d in milk(DIM).Blood gases,plasma metabolites and apparent total tract digestibility(ATTD)of nutrients were ***:Feed intake,the ATTD of DM,energy,nitrogen,fat and crude fiber changed with DIM(P<0.001).Except for Glu,O2,and urea,all net portal fluxes were positive,and all were affected by DIM(P<0.05)and by sampling time(P<0.01).Compared with pre partum levels,net portal uptake of AA was 3-63%lower at+3 DIM but 40-100%higher at+17 *** portal fluxes of AA peaked at 1.5 to 2.5 h after feeding except for Glu,and they were positively correlated with changes in sow feed intake across *** net portal recovery was low for Met(49%),Thr(54%),and His(54%)and high for the remaining essential AA(63-69%)and none of them differed across *** hepatic uptake(*** oxidation)of Lys,Thr,Ile,Leu and Phe peaked at 0.5 to 2.5 h after feeding,whereas uptake of Trp,Val,and His was constant,while that of Met was close to ***:The net portal recovery was substantially lower for Met,Thr,and His than the remaining essential *** AA oxidation peaks 0.5 to 2.5 h after *** heat production in PDV and liver was approximately two-fold higher at peak lactation compared to other *** study suggests that lysine was the limiting AA in peak lactation but not in early lactation.

关键词： Gestation Heat production Lactation Net hepatic flux Net portal flux Sow

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Inclusion of purified dietary fiber during gestation improved the reproductive performance of sows

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Journal of Animal Science and Biotechnology 2020年第4期11卷 1009-1025页

作者： Yong Zhuo Bo Feng Yuedong Xuan lianqiang che Zhengfeng Fang Yan Lin Shengyu Xu Jian Li Bing Feng De Wu Key Laboratory for Animal Disease-Resistant Nutrition of the Ministry of Education of China and Animal Nutrition InstituteSichuan Agricultural University211 Huimin RoadWenjiangChengdu 611130People’s Republic of China

Background: This study aimed to investigate the impacts of guar gum and cellulose as the source of dietary fiber during gestation on the reproductive performance of ***: A total of 210 sows(parities 3–6) were randomly allocated into six diets(n = 35) throughout gestation to feed graded levels of dietary fiber(DF), including a corn-soybean meal-based control diet with no wheat bran inclusion(CON, 12.5% DF), a wheat bran-rich diet(DF1, 17.4% DF), and another 4 diets(DF2, 17.7% DF;DF3, 18.1%DF;DF4, 18.4% DF;DF5, 18.8% DF) in which wheat bran were equally substituted by 1%, 2%, 3% and 4% purified FIBER MIX(guar gum and cellulose, 1:4). All sows received similar DE and other nutrients throughout ***: DF treatment during gestation resulted in normal fecal score(1 to 5 with 1 = dry and 5 = watery) in sows compared with those received the CON diet(P < 0.05). The number of total born piglets had a tendency to be affected by dietary treatment(P = 0.07), and correlation analysis revealed a linear response of total born to dietary fiber levels during gestation(P < 0.01). Sows received the DF2, DF3, and DF5 diets during gestation had a greater ADFI during lactation compared with those in the CON group(P < 0.05) without affecting the daily body weight gain of suckling piglets. Gut microbiota compositions were dramatically changed by the gestation stage and some of those were changed by DF inclusion. Fecal acetate, propionate, and butyrate of sows were markedly increased in late gestation, and butyrate contents in feces of gestating sows were significantly affected by DF levels(P < 0.01).Serum concentrations of pro-inflammatory TNF-α were decreased and anti-inflammatory IL-10 was increased on day30 of gestation by DF levels(P < 0.05).Conclusions: In summary, increasing dietary fiber levels by guar gum and cellulose during gestation improved the reproductive performance of sows, which might be related to changes in immunity and gut microbiota of sows.

关键词： Dietary fiber Gut microbiota Immunity Reproductive performance Sow

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Effects of maternal methyl donor intake during pregnancy on ileum methylation and function in an intrauterine growth restriction pig model

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Journal of Animal Science and Biotechnology 2024年第3期15卷 1173-1189页

作者： Yan Lin Jiangnan Wu Yong Zhuo Bin Feng Zhengfeng Fang Shengyu Xu Jian Li Hua Zhao De Wu Lun Hua lianqiang che Key Laboratory of Animal Disease‑Resistance Nutrition Animal Nutrition InstituteSichuan Agricultural UniversityChengdu 611130SichuanChina

Background Intrauterine growth retardation(IUGR)affects intestinal growth,morphology,and function,which leads to poor growth performance and high *** present study explored whether maternal dietary methyl donor(MET)supplementation alleviates IUGR and enhances offspring’s growth performance by improving intestinal growth,function,and DNA methylation of the ileum in a porcine IUGR *** Forty multiparous sows were allocated to the control or MET diet groups from mating until *** farrowing,8 pairs of IUGR and normal birth weight piglets from 8 litters were selected for sampling before suckling *** The results showed that maternal MET supplementation tended to decrease the IUGR incidence and increased the average weaning weight of ***,maternal MET supplementation significantly reduced the plasma concentrations of isoleucine,cysteine,urea,and total amino acids in sows and newborn *** also increased lactase and sucrase activity in the jejunum of newborn *** addition resulted in lower ileal methionine synthase activity and increased betaine homocysteine S-methyltransferase activity in the ileum of newborn *** methylation analysis of the ileum showed that MET supplementation increased the methyla-tion level of DNA CpG sites in the ileum of newborn ***-regulated differentially methylated genes were enriched in folic acid binding,insulin receptor signaling pathway,and endothelial cell *** contrast,up-regulated methylated genes were enriched in growth hormone receptor signaling pathway and nitric oxide biosyn-thetic *** Maternal MET supplementation can reduce the incidence of IUGR and increase the weaning litter weight of piglets,which may be associated with better intestinal function and methylation status.

关键词： Ileum Intrauterine growth restriction Methyl donor Methylation Sows

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Identification of Epsin1 as a regulator for hepatic lipid and glucose metabolism

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Genes & Diseases 2023年第1期10卷 72-75页

作者： Xiaohua Huang Long Jin Zhengfeng Fang lianqiang che Yan Lin Shengyu Xu Yong Zhuo Mingzhou Li De Wu Bin Feng Animal Nutrition Institute Sichuan Agricultural UniversityChengduSichuan 611130China Key Laboratory of Animal Disease-Resistant Nutrition of Ministry of Education Sichuan Agricultural UniversityChengduSichuan 611130China College of Animal Science Sichuan Agricultural UniversityChengduSichuan 611130China

Obesity related non-alcoholic fatty liver disease(NAFLD),which can progress to steatohepatitis and insulin resistance,has become a major chronic liver disease worldwide.1 As an adaptor of clathrin-mediated endocytosis... 详细信息

关键词： metabolism healing wound

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Leucine modulates the IPEC-J2 cell proteome associated with cell proliferation, metabolism and phagocytosis

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Animal Nutrition 2018年第3期4卷 316-321页

作者： Xiangbing Mao Man Ren Daiwen chen Bing Yu lianqiang che Jun He Junqiu Luo Yuheng Luo Jianping Wang Hui Sun Animal Nutrition Institute Sichuan Agricultural University Animal Science Collage Anhui Science and Technology University College of Animal Science and Technology Jilin Agricultural University

Leucine can affect intestinal protein expressions, and improve mucosal immune function. However, little study has been conducted to determine the change of protein component by leucine treatment in intestine epithelial cells. The present study was to cover the key proteins and cell pathways that could be regulated by leucine treatment in porcine intestinal epithelial cell line(IPEC-J2) cells with the approach of proteome analysis. A total number of 3,211 proteins were identified in our approach by searching the database of Uniprot sus scrofa. Among identified proteins, there were 101 proteins expressed differently between control group and leucine group. Compared with the control group, there were 50 up-regulated proteins and 51 down-regulated proteins in leucine group. In these proteins, leucine treatment decreased the expression of some proteins including pyruvate kinase, glyceraldehyde-3-phosphate dehydrogenase,E3 ubiquitin ligase, cathepsin D, caspase 3 and caspase 6, and increased the levels of some proteins, such as some eukaryotic translation initiation factors, ubiquitin carboxyl-terminal hydrolase, DNA-related RNA polymerase II, urokinase plasminogen activator, cyclin-dependent kinase inhibitor 2 b, Mut L homolog 1,5-methylcytosine binding domain 4, polymerase d, a-tubulin, syntaxin 18, Ras homolog D, actin related protein 2/3 complex and cofilin. Via the analysis of Gene Ontology and pathways, these proteins in IPECJ2 cells were related with some physiological functions, such as protein metabolism, glycolysis, cell proliferation, apoptosis and phagocytosis. Thus, these results suggest that leucine affects gut barrier function possibly via regulating cell proliferation and apoptosis, metabolism and phagocytosis.

关键词： Leucine IPEC-J2 cells Proteome Phagocytosis Cell proliferation Apoptosis and metabolism

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Mammary cell proliferation and catabolism of adipose tissues in nutrition-restricted lactating sows were associated with extracellular high glutamate levels

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Journal of Animal Science and Biotechnology 2019年第1期10卷 172-182页

作者： Heju Zhong Peng Wang Yumo Song Xiaoling Zhang lianqiang che Bin Feng Yan Lin Shengyu Xu Jian Li De Wu Qiaofeng Wu Zhengfeng Fang Key Laboratory for Animal Disease Resistance Nutrition of the Ministry of Education Animal Nutrition InstituteSichuan Agricultural University Acupuncture and Moxibustion College Chengdu University of Traditional Chinese Medicine

Background: Persistent lactation,as the result of mammary cellular anabolism and secreting function,is dependent on substantial mobilization or catabolism of body reserves under nutritional ***,little is known about the biochemical mechanisms for nutrition-restricted lactating animals to simultaneously maintain the anabolism of mammary cells while catabolism of body *** present study,lactating sows with restricted feed allowance(RFA)(n = 6),24% feed restriction compared with the control(CON) group(n = 6),were used as the nutrition-restricted *** and mammary venous cannulas methods were used to monitor postprandial dynamic changes of metabolites in adipose and mammary ***: At lactation d 28,the RFA group showed higher(P 0.05) between ***,piglet performance and milk yield did not differ(P > 0.05) between *** would appear that activation of Notch signaling and adequate supply of glutamate might assist ***: Mammary cell proliferation and catabolism of adipose tissues i

关键词： Glutamate Insulin sensitivity Lipolysis Mammary cell proliferation

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Beneficial effects of a decreased meal frequency on nutrient utilization,secretion of luteinizing hormones and ovarian follicular development in gilts

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Journal of Animal Science and Biotechnology 2021年第3期12卷 1098-1111页

作者： Lun Hua Lianpeng Zhao Zhengyu Mao Wentao Li Jing Li Xuemei Jiang lianqiang che Shengyu Xu Yan Lin Zhengfeng Fang Bin Feng De Wu Yong Zhuo Animal Nutrition Institute Sichuan Agricultural UniversityChengdu 611130People’s Republic of China Key Laboratory for Animal Disease-Resistant Nutrition of the Ministry of Education of China Sichuan Agricultural UniversityChengdu 611130People’s Republic of China Key Laboratory of Animal Disease-Resistant Nutrition of Sichuan Province Sichuan Agricultural University211 Huimin RoadWenjiang DistrictChengdu 611130People’s Republic of China

Background:Replacement gilts are typically fed ad libitum,whereas emerging evidence from human and rodent studies has revealed that time-restricted access to food has health *** objective of this study was to investigate the effect of meal frequency on the metabolic status and ovarian follicular development in ***:A total of 36 gilts(Landrace×Yorkshire)with an age of 150±3 d and a body weight of 77.6±3.8 kg were randomly allocated into one of three groups(n=12 in each group),and based on the group allocation,the gilts were fed at a frequency of one meal(T1),two meals(T2),or six meals per day(T6)for 14 consecutive *** effects of the meal frequency on growth preference,nutrient utilization,short-chain fatty acid production by gut microbial,the post-meal dynamics in the metabolic status,reproductive hormone secretions,and ovarian follicular development in the gilts were ***:The gilts in the T1 group presented a higher average daily gain(+48 g/d,P<0.05)and a higher body weight(+4.9 kg,P<0.05)than those in the T6 *** meal frequency had no effect on the apparent digestibility of dry matter,crude protein,ether extract,ash,and gross energy,with the exception that the T1 gilts exhibited a greater NDF digestibility than the T6 gilts(P<0.05).The nitrogen balance analysis revealed that the T1 gilts presented decreased urine excretion of nitrogen(−8.17 g/d,P<0.05)and higher nitrogen retention(+9.81 g/d,P<0.05),and thus exhibited higher nitrogen utilization than the T6 *** time-course dynamics of glucose,α-amino nitrogen,urea,lactate,and insulin levels in serum revealed that the T1 group exhibited higher utilization of nutrients after a meal than the T2 or T6 *** T1 gilts also had a higher acetate content and SCFAs in feces than the T6 gilts(P<0.05).The age,body weight and backfat thickness of the gilts at first estrous expression were not affected by the meal frequency,but the gilts in the T1 group had higher levels of seru

关键词： Gilts Luteinizing hormone Meal frequency Nutrient utilization Ovarian follicular development

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Selenoproteins synergistically protect porcine skeletal muscle from oxidative damage via relieving mitochondrial dysfunction and endoplasmic reticulum stress

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Journal of Animal Science and Biotechnology 2023年第5期14卷 2180-2196页

作者： Jinzhong Jing Ying He Yan Liu Jiayong Tang Longqiong Wang Gang Jia Guangmang Liu Xiaoling chen Gang Tian Jingyi Cai lianqiang che Bo Kang Hua Zhao Key Laboratory for Animal Disease‑Resistance Nutrition of Ministry of Education of China Ministry of Agriculture and Rural Affairsof Sichuan ProvinceAnimal Nutrition InstituteSichuan Agricultural UniversityChengdu 611130SichuanChina College of Animal Science and Technology Sichuan Agricultural UniversityChengdu 611130SichuanChina

Background The skeletal muscle of pigs is vulnerable to oxidative damage,resulting in growth *** are important components of antioxidant systems for animals,which are generally regulated by dietary selenium(Se)***,we developed the dietary oxidative stress(DOS)-inducing pig model to investigate the protective effects of selenoproteins on DOS-induced skeletal muscle growth *** Dietary oxidative stress caused porcine skeletal muscle oxidative damage and growth retardation,which is accompanied by mitochondrial dysfunction,endoplasmic reticulum(ER)stress,and protein and lipid metabolism *** with Se(0.3,0.6 or 0.9 mg Se/kg)in form of hydroxy selenomethionine(OH-SeMet)linearly increased muscular Se deposition and exhibited protective effects via regulating the expression of selenotranscriptome and key selenoproteins,which was mainly reflected in lower ROS levels and higher antioxidant capacity in skeletal muscle,and the mitigation of mitochondrial dysfunction and ER ***’s more,selenoproteins inhibited DOS induced protein and lipid degradation and improved protein and lipid biosynthesis via regulating AKT/mTOR/S6K1 and AMPK/SREBP-1 signalling pathways in skeletal ***,several parameters such as the activity of GSH-Px and T-SOD,the protein abundance of JNK2,CLPP,SELENOS and SELENOF did not show dose-dependent ***,several key selenoproteins such as MSRB1,SELENOW,SELENOM,SELENON and SELENOS play the unique roles during this *** Increased expression of selenoproteins by dietary OH-SeMet could synergistically alleviate mitochondrial dysfunction and ER stress,recover protein and lipid biosynthesis,thus alleviate skeletal muscle growth *** study provides preventive measure for OS-dependent skeletal muscle retardation in livestock husbandry.

关键词： Dietary oxidative stress Endoplasmic reticulum stress Growth retardation Mitochondrial dysfunction Selenoproteins Skeletal muscle

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Artificial parasin I protein(API)supplementation improves growth performance and intestinal health in weaned piglets challenged with enterotoxigenic Escherichiacoli

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Animal Nutrition 2024年第3期18卷 154-165页

作者： Congzhi Zou Wanxin Zhao Shenggang Yin Xiaoyu Xiang Jiayong Tang Gang Jia lianqiang che Guangmang Liu Xiaoling chen Gang Tian Jingyi Cai Bo Kang Hua Zhao Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Agriculture and Rural AffairsKey Laboratory for Animal Disease-Resistance Nutrition of Sichuan ProvinceAnimal Nutrition InstituteSichuan Agricultural UniversityChengdu 611130China College of Animal Science and Technology Sichuan Agricultural UniversityChengdu 611130China

Diarrheas are common risks faced by piglets during the weaning *** study investigated the alleviating effects of artificial parasin I protein(API)on growth performance and intestinal health of weaned pigs upon enterotoxigenic Escherichia coli(ETEC)*** piglets were randomly divided into five groups and fed a basal diet(CON)or basal diet supplemented with API at 0,750,and 1500 mg/kg or antibiotics for 5 *** d 15 and 25,piglets were challenged with ETEC K88 except for the CON *** the ETEC challenge(d 1–14),dietary API supplementation improved growth performance,and 750 mg API increased(P<0.05)the average daily gain(ADG),decreased(P<0.05)feed to gain ratio(F/G)and diarrhea index of weaned *** challenge(during d 15–35)reduced growth performance and increased(P<0.01)the F/G,diarrhea rate,and diarrhea *** event was accompanied by the numerically increased malondialdehyde(MDA)levels in serum and ileum,the decreased(P<0.05)zonula-occludens-1(ZO-1)and interleukin-6(IL-6)in the ileum,and the increased(P=0.04)secretory immunoglobulin A(sIgA)protein in the *** parasin I protein supplementation alleviated the negative impact of *** 750 mg/kg API inclusion elevated(P<0.05)ADG and decreased(P<0.05)F/*** levels of API decreased(P<0.01)the diarrhea rate and diarrhea ***,API inclusion decreased(P<0.01)the crypt depth in the jejunum,elevated(P<0.05)villus height in the duodenum and villus height to crypt depth ratio in the duodenum and ileum,up-regulated(P<0.05)ZO-1 gene,and down-regulated(P<0.05)mucin-2 gene in the jejunum,and 1500 mg/kg API decreased(P<0.01)sIgA level and down-regulated(P<0.05)IL-1βgene in the ***,750 mg/kg API elevated(P<0.01)Bifidobacteria population and acetic acid concentrations in the cecal *** conclusion,API supplementation alleviates the negative impact of ETEC on growth performance and intestinal health,thus can be applied as an antibiotic alternative in weane

关键词： Artificial parasin I protein Growth performance Intestinal barrier Diarrhea Weaned piglet

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Selenomethionine alleviates chronic heat stress-induced breast muscle injury and poor meat quality in broilers via relieving mitochondrial dysfunction and endoplasmic reticulum stress

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Animal Nutrition 2024年第1期16卷 363-375页

作者： Jinzhong Jing Jiayi Wang Xiaoyu Xiang Shenggang Yin Jiayong Tang Longqiong Wang Gang Jia Guangmang Liu Xiaoling chen Gang Tian Jingyi Cai Bo Kang lianqiang che Hua Zhao Key Laboratory for Animal Disease-Resistance Nutrition of Ministry of Education of China Ministry of Agriculture and Rural Affairsof Sichuan ProvinceAnimal Nutrition InstituteSichuan Agricultural UniversityChengdu 611130SichuanChina College of Animal Science and Technology Sichuan Agricultural UniversityChengdu 611130SichuanChina

In the present study,the chronic heat stress(CHS)broiler model was developed to investigate the potential protection mechanism of organic selenium(selenomethionine,SeMet)on CHS-induced skeletal muscle growth retardation and poor meat *** hundred Arbor Acres male broilers(680±70 g,21 d old)were grouped into 5 treatments with 8 replicates of 10 broilers per *** in the control group were raised in a thermoneutral environment(22±2°C)and fed with a basal *** other four treatments were exposed to hyperthermic conditions(33±2°C,24 h in each day)and fed on the basal diet supplied with SeMet at 0.0,0.2,0.4,and 0.6 mg Se/kg,respectively,for 21 *** showed that CHS reduced(P<0.05)the growth performance,decreased(P<0.05)the breast muscle weight and impaired the meat quality of breast muscle in *** induced protein metabolic disorder in breast muscle,which increased(P<0.05)the expression of caspase 3,caspase 8,caspase 9 and ubiquitin proteasome system related genes,while decreased the protein expression of *** also decreased the antioxidant capacity and induced mitochondrial stress and endoplasmic reticulum(ER)stress in breast muscle,which increased(P<0.05)the ROS levels,decreased the concentration of ATP,increased the protein expression of HSP60 and CLPX,and increased(P<0.05)the expression of ER stress *** SeMet supplementation linearly increased(P<0.05)breast muscle Se concentration and exhibited protective effects via up-regulating the expression of the selenotranscriptome and several key selenoproteins,which increased(P<0.05)body weight,improved meat quality,enhanced antioxidant capacity and mitigated mitochondrial stress and ER ***'s more,SeMet suppressed protein degradation and improved protein biosynthesis though inhibiting the caspase and ubiquitin proteasome system and promoting the mTOR-4EBP1 *** conclusion,dietary SeMet supplementation increases the expression of several key selenoproteins

关键词： Broiler Chronic heat stress Skeletal muscle Meat quality Mitochondrial dysfunction Endoplasmic reticulum stress

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