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Coated sodium butyrate ameliorates high‑energy and low‑protein diet induced hepatic dysfunction via modulating mitochondrial dynamics, autophagy and apoptosis in laying hens

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Journal of animal science and Biotechnology 2024年第3期15卷 1190-1206页

作者： Sasa Miao Tianming Mu Ru Li Yan Li Wenyan Zhao Jiankui Li Xinyang Dong Xiaoting Zou key laboratory of animal feed and nutrition of Zhejiang Province Key Laboratory of Animal Nutrition and Feed Science(Eastern of China)Ministry of Agriculture and Rural AffairsThe Key Laboratory of Molecular Animal NutritionMinistry of EducationCollege of Animal SciencesZhejiang UniversityHangzhou 310058China.

Background Fatty liver hemorrhagic syndrome(FLHS),a fatty liver disease in laying hens,poses a grave threat to the layer industry,stemming from its ability to trigger an alarming plummet in egg production and usher in acute mortality among laying *** evidence suggests that the onset and progression of fatty liver was closely related to mitochondria *** butyrate was demonstrated to modulate hepatic lipid metabolism,alle-viate oxidative stress and improve mitochondrial dysfunction in vitro and mice ***,there is limited existing research on coated sodium butyrate(CSB)to prevent FLHS in laying hens,and whether and how CSB exerts the anti-FLHS effect still needs to be *** this experiment,the FLHS model was induced by administering a high-energy low-protein(HELP)diet in laying *** objective was to investigate the effects of CSB on alleviating FLHS with a focus on the role of CSB in modulating mitochondrial *** A total of 288 healthy 28-week-old Huafeng laying hens were arbitrarily allocated into 4 groups with 6 replicates each,namely,the CON group(normal diet),HELP group(HELP diet),CH500 group(500 mg/kg CSB added to HELP diet)and CH750 group(750 mg/kg CSB added to HELP diet).The duration of the trial encompassed a period of 10 *** The result revealed that CSB ameliorated the HELP-induced FLHS by improving hepatic steatosis and patho-logical damage,reducing the gene levels of fatty acid synthesis,and promoting the mRNA levels of key enzymes of fatty acid *** reduced oxidative stress induced by the HELP diet,upregulated the activity of GSH-Px and SOD,and decreased the content of MDA and *** also mitigated the HELP diet-induced inflammatory response by blocking TNF-α,IL-1β,and F4/*** addition,dietary CSB supplementation attenuated HELP-induced activation of the mitochondrial unfolded protein response(UPRmt),mitochondrial damage,and decline of ATPase *** diet decreased th

关键词： Autophagy Coated sodium butyrate Laying hens Lipid metabolism Mitochondria

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Maternal resveratrol improves the intestinal health and weight gain of suckling piglets during high summer temperatures: The involvement of exosome-derived microRNAs and immunoglobin in colostrum

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animal nutrition 2024年第2期17卷 36-48页

作者： Changming Hong Yujian Huang Guan Yang Xiaolu Wen Li Wang Xuefen Yang Kaiguo Gao Zongyong Jiang Hao Xiao State key laboratory of Swine and Poultry Breeding Industry Institute of Animal ScienceGuangdong Academy of Agricultural Sciences key laboratory of animal nutrition and feed science in south china Ministry of Agriculture and Rural AffairsGuangdong Public Laboratory of Animal Breeding and Nutrition Guangdong Provincial key laboratory of animal nutrition Control Institute of Subtropical Animal Nutrition and FeedCollege of Animal ScienceSouth China Agricultural University Department of Infectious Diseases and Public Health Jockey Club College of Veterinary Medicine and Life SciencesCity University of Hong Kong

Previous studies have shown that maternal resveratrol improved growth performance and altered the microbial composition of suckling piglets under hot summer conditions. However, it remains unclear how maternal resveratrol improves growth performance of suckling piglets during high summer temperatures. A total of 20 sows(Landrace × Large White; three parity) were randomly assigned to 2 groups(with or without 300 mg/kg resveratrol) from d 75 of gestation to d 21 of lactation during high ambient temperatures(from 27 to 30℃). The results showed that maternal resveratrol supplementation increased total daily weight gain of piglets under hot summer conditions, which is consistent with previous studies. Furthermore, we found that maternal resveratrol improved the intestinal morphology and intestinal epithelial proliferation in suckling piglets. Dietary resveratrol supplementation affected the characteristics of exosome-derived microRNAs(miRNAs) in sow colostrum, as well as the genes targeted by differentially produced miRNAs. MiRNAs are concentrated in the tight junction pathway. As a result, the expression of intestinal tight junction proteins was increased in suckling piglets(P < 0.05).Notably, maternal resveratrol increased the intestinal secretory immunoglobulin A(sIgA) levels of suckling piglets via colostrum immunoglobin(P < 0.05), which could increase the abundance of beneficial microbiota to further increase the concentration of short chain fatty acids(SCFA) in suckling piglets' intestine(P < 0.05). Finally, our correlation analysis further demonstrated the positive associations between significantly differential intestinal microbiota, intestinal sIgA production and SCFA concentrations,as well as the positive relation between total daily weight gain and intestinal health of suckling *** together, our findings suggested that maternal resveratrol could promote intestinal health to improve piglet growth during high summer temperatures, which might be associa

关键词： Colostrum Exosome Immunoglobulin Intestinal health Resveratrol

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Next-generation probiotic candidates targeting intestinal health in weaned piglets: Both live and heat-killed Akkermansia muciniphila prevent pathological changes induced by enterotoxigenic Escherichia coli in the gut

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animal nutrition 2024年第2期17卷 110-122页

作者： Cong Lan Hua Li Yuqing Shen Yang Liu Aimin Wu Jun He Jingyi Cai Gang Tian Xiangbing Mao Zhiqing Huang Bing Yu Ping Zheng Jie Yu Junqiu Luo Hui Yan Yuheng Luo key laboratory for animal Disease-Resistance nutrition of Ministry of Education of china Key Laboratory for Animal Disease-Resistance Nutrition and Feed of Ministry of Agriculture of ChinaKey Laboratory of Animal Disease-Resistant Nutrition of Sichuan ProvinceEngineering Research Center of Animal Disease-Resistance Nutrition Biotechnology of Ministry of Education of ChinaAnimal Nutrition InstituteSichuan Agricultural University

The use of next-generation probiotics （NGP） in pigs for combating diseases has been subject to limited *** we explored the potential of a well-known NGP candidate Akkermansia muciniphila targeting pig gut *** the first screening experiment,we found that the abundance of *** peaked at 14 d old but decreased at weaning （21 d old;P<0.05）,suggesting the weaning period may be an effective window for *** *** that,48 crossbred weaned pigs at 28 d old were randomly assigned to five groups:control （CON）,high/low live *** （HA/LA）,and high/low heatkilled *** （HIA/LIA）.From 1 to 28 d old,the CON group received gastric infusion of anaerobic sterile saline every other day;the HA and LA groups were gavaged every other day with 1×1010CFU/5 m L and 5×10～8CFU/5 mL live ***,respectively;and the HIA and LIA groups were gavaged every other day with 1×1010CFU/5 mL and 5×10～8CFU/5 mL heat-killed ***,*** d 29,pigs in the CON group were randomly and equally divided into two groups,one of which was named the enterotoxigenic Escherichia coli （ETEC） group,and all groups except CON received a 5-d ETEC *** supplementation of *** numerically reduced the diarrhea rate of weaned pigs compared to the pigs that only received the ETEC challenge （P=0.57）,but the LIA group had a higher diarrhea rate than the CON group （P<0.05）.Consistent with this,the supplementation of *** improved the small intestinal morphology and structure,proportion of CD4+T lymphocytes in the blood,as well as the expression of genes related to intestinal barrier and antioxidant indices of pigs with ETEC challenge,especially for the LA group （P<0.05）.Meanwhile,*** supplementation reduced the expression of ETEC virulence factor genes in the ileum and colon of pigs challenged by ETEC （P<0.05）.Therefore,*** may protect the intestinal health of weaned piglets from damage caused by

关键词： Akkermansia muciniphila Weaned piglet Enterotoxigenic Escherichia coli challenge Intestinal health

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Accurate models and nutritional strategies for specific oxidative stress factors: Does the dose matter in swine production?

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Journal of animal science and Biotechnology 2024年第2期15卷 519-534页

作者： Changming Hong Yujian Huang Shuting Cao Li Wang Xuefen Yang Shenglan Hu Kaiguo Gao Zongyong Jiang Hao Xiao State key laboratory of Swine and Poultry Breeding Industry Ministry of Agriculture Key Laboratory of Animal Nutrition and Feed Science in South ChinaGuangdong Public Laboratory of Animal Breeding and NutritionGuangdong Provincial Key Laboratory of Animal Breeding and NutritionMaoming BranchGuangdong Laboratory for Lingnan Modern AgricultureGuangzhouChina Institute of animal science Guangdong Academy of Agricultural Sciences1 Dafeng 1st StreetGuangzhou 510640China

Oxidative stress has been associated with a number of physiological problems in swine,including reduced production ***,although there has been increased research into regulatory mechanisms and antioxidant strategies in relation to oxidative stress-induced pig production,it remains so far largely unsuccessful to develop accurate models and nutritional strategies for specific oxidative stress ***,we discuss the dose and dose intensity of the causes of oxidative stress involving physiological,environmental and dietary factors,recent research models and the antioxidant strategies to provide theoretical guidance for future oxidative stress research in swine.

关键词： Accurate models Dose nutritional strategies Oxidative stress Swine

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Dietary crude protein time-dependently modulates the bacterial community and metabolites and changes dietary nutrient efficiency in growing pigs

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animal nutrition 2024年第2期17卷 1-10页

作者： Yuming Wang Junyan Zhou Ning Cao Lu Wang Jiayu Tu Xiangfang Zeng Shiyan Qiao State key laboratory of animal nutrition and feeding Institute of Animal Sciences of Chinese Academy of Agricultural Sciences animal science and Technology College Beijing University of Agriculture State key laboratory of animal nutrition and feeding Ministry of Agriculture Feed Industry CentreChina Agricultural University

The reduced nutrient digestibility of low-protein(LP) diets has been shown to be caused by the weakened fermentative capacity of the post-gut flora. The dynamic regulation of dietary protein contents on post-gut microbial population and fermentative metabolism is unclear. Twelve growing barrows(19.9 ± 0.8 kg) fitted with a T-cannula at the blind end of the cecum were randomly administered a highprotein(HP, 21.5% crude protein [CP]) diet or an LP(15.5% CP) diet for 28 d. The cecal content and feces were collected at d 1, 14, and 28 of the experiment for microflora structures and metabolite concentrations analysis. The nutrient digestibility coefficient and plasma biochemical parameters were also determined. Compared with the HP treatment, the LP treatment showed decreased plasma urea nitrogen concentration and apparent total tract digestibility of dry matter, gross energy, and CP(P < 0.01). In addition, urinary nitrogen losses, total nitrogen losses, and daily nitrogen retention in the LP treatment were lower than those in the HP treatment(P < 0.01), and the nitrogen retention-to-nitrogen intake ratio in the LP treatment was increased(P < 0.01). The HP group showed increased cecal total short-chain fatty acids(SCFA) concentration and fecal propionate, butyrate, and total SCFA concentrations(P < 0.05) on d 14 and 28, which may be mainly related to the elevated abundance of SCFA-producing bacteria, such as Ruminococcus, Lactobacillus, and Prevotella(P < 0.05). Probiotics, such as Bifidobacterium, Bacteroidales S24-7, and Rikenella, enriched in the LP treatment possibly contributed to reduced plasma endotoxin content. The differences in the abundances of almost all the above-mentioned flora appeared on d 28 but not d 14. Likewise, differences in the Simpson and Shannon indices and clustering patterns of the microbiota between treatments were also only observed on d 28. To sum up, in a time-dependent manner, the LP diet increased probiotics with gut-improving functions a

关键词： Low-protein diet Microorganism Nutrient digestibility Pig Short-chain fatty acid

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Vitamin A regulates mitochondrial biogenesis and function through p38 MAPK‑PGC‑1α signaling pathway and alters the muscle fiber composition of sheep

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Journal of animal science and Biotechnology 2024年第2期15卷 898-910页

作者： Pengkang Song Jiamin Zhao Fanqinyu Li Xiaoyi Zhao Jinxin Feng Yuan Su Bo Wang Junxing Zhao College of animal science Shanxi Agricultural UniversityTaiguShanxi 030801People’s Republic of China State key laboratory of animal nutrition and feeding Department of Animal Nutrition and Feed ScienceCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193People’s Republic of China

Background Vitamin A(VA)and its metabolite,retinoic acid(RA),are of great interest for their wide range of physiological ***,the regulatory contribution of VA to mitochondrial and muscle fiber composition in sheep has not been *** Lambs were injected with 0(control)or 7,500 IU VA palmitate into the biceps femoris muscle on d 2 after *** the age of 3 and 32 weeks,longissimus dorsi(LD)muscle samples were obtained to explore the effect of VA on myofiber type *** vitro,we investigated the effects of RA on myofiber type composition and intrinsic *** The proportion of type I myofiber was greatly increased in VA-treated sheep in LD muscle at *** greatly promoted mitochondrial biogenesis and function in LD muscle of *** exploration revealed that VA elevated PGC-1αmRNA and protein contents,and enhanced the level of p38 MAPK phosphorylation in LD muscle of *** addition,the number of type I myofibers with RA treatment was significantly increased,and type IIx myofibers was significantly decreased in primary *** with in vivo experiment,RA significantly improved mitochondrial biogenesis and function in primary myoblasts of *** then used si-PGC-1αto inhibit PGC-1αexpression and found that si-PGC-1αsignificantly abrogated RA-induced the formation of type I myofibers,mitochondrial biogenesis,MitoTracker staining intensity,UQCRC1 and ATP5A1 expression,SDH activity,and enhanced the level of type IIx muscle *** data suggested that RA improved mitochondrial biogenesis and function by promoting PGC-1αexpression,and increased type I *** order to prove that the effect of RA on the level of PGC-1αis caused by p38 MAPK signaling,we inhibited the p38 MAPK signaling using a p38 MAPK inhibitor,which significantly reduced RA-induced PGC-1αand MyHC I *** VA promoted PGC-1αexpression through the p38 MAPK signaling pathway,improved mitochondrial biogenesis,and altered

关键词： Mitochondria Muscle fiber type PGC-1α p38 MAPK Retinoic acid Vitamin A

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nutrition strategies to control post-weaning diarrhea of piglets: From the perspective of feeds

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animal nutrition 2024年第2期17卷 297-311页

作者： Qingsong Tang Tianyi Lan Chengyu Zhou Jingchun Gao Liuting Wu Haiyang Wei Wenxue Li Zhiru Tang Wenjie Tang Hui Diao Yetong Xu Xie Peng Jiaman Pang Xuan Zhao Zhihong Sun laboratory for Bio-feed and Molecular nutrition College of Animal Science and Technology Southwest University animal Breeding and Genetics key laboratory of Sichuan Province Sichuan Animal Science Academy Yibin Academy of southwest University

Post-weaning diarrhea(PWD) is a globally significant threat to the swine industry. Historically, antibiotics as well as high doses of zinc oxide and copper sulfate have been commonly used to control ***, the development of bacterial resistance and environmental pollution have created an interest in alternative strategies. In recent years, the research surrounding these alternative strategies and the mechanisms of piglet diarrhea has been continually updated. Mechanically, diarrhea in piglets is a result of an imbalance in intestinal fluid and electrolyte absorption and secretion. In general, enterotoxigenic Escherichia coli(ETEC) and diarrheal viruses are known to cause an imbalance in the absorption and secretion of intestinal fluids and electrolytes in piglets, resulting in diarrhea when Cl secretion-driven fluid secretion surpasses absorptive capacity. From a perspective of feedstuffs, factors that contribute to imbalances in fluid absorption and secretion in the intestines of weaned piglets include high levels of crude protein(CP), stimulation by certain antigenic proteins, high acid-binding capacity(ABC), and contamination with deoxynivalenol(DON) in the diet. In response, efforts to reduce CP levels in diets,select feedstuffs with lower ABC values, and process feedstuffs using physical, chemical, and biological approaches are important strategies for alleviating PWD in piglets. Additionally, the diet supplementation with additives such as vitamins and natural products can also play a role in reducing the diarrhea incidence in weaned piglets. Here, we examine the mechanisms of absorption and secretion of intestinal fluids and electrolytes in piglets, summarize nutritional strategies to control PWD in piglets from the perspective of feeds, and provide new insights towards future research directions.

关键词： Post-weaning diarrhea Fluid secretion feed nutritional regulation strategies Piglet

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The protective role of prebiotics and probiotics on diarrhea and gut damage in the rotavirus-infected piglets

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Journal of animal science and Biotechnology 2024年第4期15卷 1424-1448页

作者： Heng Yang Xiangqi Fan Xiangbing Mao Bing Yu Jun He Hui Yan Jianping Wang Institute of animal nutrition Sichuan Agricultural UniversityKey Laboratory for Animal Disease-Resistance Nutrition of China Ministry of EducationKey Laboratory of Animal Disease-Resistant Nutrition and Feed of China Ministry of Agriculture and Rural AffairsKey Laboratory of Animal Disease-Resistant Nutrition of Sichuan ProvinceNo.211Gongpinghuimin RoadWenjiang DistrictChengduSichuan Province 611130People’s Republic of China

Rotavirus is one of the pathogenic causes that induce diarrhea in young animals, especially piglets, worldwide. However, nowadays, there is no specific drug available to treat the disease, and the related vaccines have no obvious efficiency in some countries. Via analyzing the pathogenesis of rotavirus, it inducing diarrhea is mainly due to disturb enteric nervous system, destroy gut mucosal integrity, induce intracellular electrolyte imbalance, and impair gut microbiota and immunity. Many studies have already proved that prebiotics and probiotics can mitigate the damage and diarrhea induced by rotavirus infection in hosts. Based on these, the current review summarizes and discusses the effects and mechanisms of prebiotics and probiotics on rotavirus-induced diarrhea in piglets. This information will highlight the basis for the swine production utilization of prebiotics and probiotics in the prevention or treatment of rotavirus infection in the future.

关键词： Diarrhea Piglet Prebiotics Probiotics Rotavirus

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Low-protein diet supplemented with 1% L-glutamine improves growth performance, serum biochemistry, redox status, plasma amino acids, and alters fecal microbiota in weaned piglets

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animal nutrition 2024年第2期17卷 144-154页

作者： Jun Li Jun Bai Ying Yang Zhenlong Wu State key laboratory of animal nutrition and feeding Department of Companion Animal Science China Agricultural University

Glutamine, one of the most abundant amino acids in the body, has been shown to exert various beneficial effects in pigs. However, knowledge regarding the role of dietary glutamine in low-protein diet-fed piglets remains scarce. The present study aimed to investigate the effects of different levels of L-glutamine on growth performance, serum biochemistry parameters, redox status, amino acids, and fecal microbiota in low-protein diet-fed piglets. A total of 128 healthy crossbred piglets(Landrace × Yorkshire)were randomly allocated into 4 groups of 4 replicate pens, with 8 piglets per pen. Piglets in the 4 groups were fed with corn and soybean meal-based low-protein diets(crude protein level, 17%) that contained0%, 1%, 2%, and 3% L-glutamine, respectively, for 28 d. Pigs administered 1% L-glutamine had greater body weight on d 28 and average daily gain(ADG, P feed to gain ratio(F:G) from d 1to 28(P feed intake, and higher F:G from d 15 to 28 and d 1 to 28 were observed in response to 2%and 3% L-glutamine treatments than 0% and 1% L-glutamine treatments(P < 0.01). Moreover, 1% Lglutamine reduced serum glucose, malondialdehyde, hydrogen peroxide concentrations and inhibited aspartate aminotransferase, alanine aminotransferase, myeloperoxidase activities in low-protein diet-fed piglets on d 14, with concomitantly upregulated catalase, total superoxide dismutase activities and glutathione level(P < 0.05). However, dietary 3% L-glutamine enhanced blood urea nitrogen content in pigs on d 14(P < 0.05). Further investigation revealed that 1% L-glutamine upregulated the serum glutamine, lysine, methionine, tyrosine, and reduced plasma valine content(P < 0.05). Additionally, 1% Lglutamine upregulated the abundance of p＿75＿a5, Clostridium, Lactobacillus, Prevotellaceae＿Prevotella,and Gemmiger in the stool of piglets on d 14, with the Streptococcus lev

关键词： Glutamine Low protein diet Pig Redox status Amino acid Microbiota

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Dietary copper improves intestinal structural integrity in juvenile grass carp(Ctenopharyngodon idella)probably related to its increased intestinal antioxidant capacity and apical junction complex

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animal nutrition 2024年第3期18卷 96-106页

作者： Rui Ma Lin Feng Pei Wu Yang Liu Hong Mei Ren Xiao Wan Jin Shu Wei Li Ling Tang Xiao Qiu Zhou Wei Dan Jiang animal nutrition Institute Sichuan Agricultural UniversityChengdu611130China Fish nutrition and Safety Production University key laboratory of Sichuan Province Sichuan Agricultural UniversityChengdu611130China key laboratory of animal Disease-Resistance nutrition Ministry of EducationMinistry of Agriculture and Rural AffairsKey Laboratory of Sichuan ProvinceChengdu611130China animal nutrition Institute Sichuan Academy of Animal ScienceSichuan Animtech Feed Co.Ltd.Chengdu610066China

This research evaluated the effects of copper(Cu)on intestinal antioxidant capacity and apical junctional complex(AJC)in juvenile grass carp.A total of 1080 healthy juvenile grass carp(11.16±0.01 g)were fed six diets including different dosages of Cu,namely 0,2,4,6,8 mg/kg(Cu citrate[CuCit]as Cu source)and 3 mg/kg(CuSO4·5H2O as Cu source).The trial lasted for 9 *** findings revealed that dietary optimal Cu supplementation(2.2 to 4.1 mg/kg)promoted intestinal growth,including intestinal length,intestinal length index,intestinal weight,and intestinal somatic index(P 0.05).On the other hand,optimal Cu increased intestinal tight junction(TJ)proteins(except for claudin 15b)and adherens junction(AJ)proteins(E-cadherin,α-catenin,β-catenin,nectin and afadin)mRNA levels(P<0.05),which could be connected to the signaling pathway formed by the Ras homolog gene family,member A(RhoA),Rho-associated kinase(ROCK),and myosin light chain kinase(MLCK).Finally,based on serum indicator D-lactate and intestinal oxidative damage index(ROS),Cu requirement(CuCit as Cu source)for juvenile grass carp from initial weight to final weight(from 11 to 173 g)was determined to be 4.14 and 4.12 mg/kg diet,*** work may provide a theoretical foundation for identifying putative Cu regulation pathways on fish intestinal health.

关键词： Copper Ctenopharyngodon idella Structural integrity Intestine

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