Animal Nutrition最新文献

{"title":"High amylose to amylopectin ratios in nitrogen-free diets decrease the ileal endogenous amino acid losses of broiler chickens","authors":"Huajin Zhou ,&nbsp;Tahir Mahmood ,&nbsp;Wei Wu ,&nbsp;Yanhong Chen ,&nbsp;Yao Yu ,&nbsp;Jianmin Yuan","doi":"10.1016/j.aninu.2023.03.011","DOIUrl":"10.1016/j.aninu.2023.03.011","url":null,"abstract":"<div><p>This study explored the variation of ileal endogenous amino acid (IEAA) losses and its influencing factors in chickens offered nitrogen-free diets (NFD) containing different ratios of amylose to amylopectin (AM/AP). A total of 252 broiler chickens at 28 d old were randomly allocated into 7 treatment groups for a 3-d trial. The dietary treatments included a basal diet (control), a NFD containing corn starch (CS), and 5 NFD with AM/AP ratios of 0.20, 0.40, 0.60, 0.80, and 1.00, respectively. As the AM/AP ratio increased, the IEAA losses of all AAs, starch digestibility and maltase activity linearly decreased (<em>P</em> &lt; 0.05), but the DM digestibility linearly and quadratically decreased (<em>P</em> &lt; 0.05). Compared with the control, the NFD increased the number of goblet cells and its regulatory genes mucin-2 and krüppel-like factor 4 (<em>KLF-4</em>) while decreasing serum glucagon and thyroxine concentrations, ileal villus height, and crypt depth (<em>P</em> &lt; 0.05). Additionally, NFD with lower AM/AP ratios (0.20 and 0.40) decreased the ileal microbiota species richness (<em>P</em> &lt; 0.05). In all NFD groups, the number of Proteobacteria increased whereas the abundance of Firmicutes dropped (<em>P</em> &lt; 0.05). However, the broilers in the AM/AP 0.60 group were closer to the digestive physiological state of chickens fed the control diet, with no significant change in maltase activity and mucin-2 expression (<em>P</em> &lt; 0.05). In conclusion, increasing AM/AP ratio in a NFD decreased the IEAA losses and the apparent ileal digestibility of starch but inevitably resulted in malnutrition and disruption of gut microbiota homeostasis. This study recommends AM/AP in NFD at 0.60 to measure IEAA of broiler chickens.</p></div>","PeriodicalId":62604,"journal":{"name":"Animal Nutrition","volume":"14 ","pages":"Pages 111-120"},"PeriodicalIF":6.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/00/ed/main.PMC10300069.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9729124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated multi-omics reveals the beneficial role of chlorogenic acid in improving the growth performance and immune function of immunologically stressed broilers","authors":"Huawei Liu ,&nbsp;Xuemin Li ,&nbsp;Kai Zhang,&nbsp;Xiaoguo Lv,&nbsp;Quanwei Zhang,&nbsp;Peng Chen,&nbsp;Yang Wang,&nbsp;Jinshan Zhao","doi":"10.1016/j.aninu.2023.05.009","DOIUrl":"10.1016/j.aninu.2023.05.009","url":null,"abstract":"<div><p>Intensive production can cause immunological stress in commercial broilers. Chlorogenic acid (CGA) regulates the intestinal microbiota, barrier function, and immune function in chickens. As complex interrelations regulate the dynamic interplay between gut microbiota, the host, and diverse health outcomes, the aim of this study was to elucidate the immunoregulatory mechanisms of CGA using multi-omics approaches. A total of 240 one-day-old male broilers were assigned to a 2 × 2 factorial design with 2 CGA levels (0 or 500 mg/kg) either with or without dexamethasone (DEX) injection for a 21-day experimental period. Therefore, there were 4 dietary treatments: control, DEX, CGA, and DEX + CGA, with 6 replicates per treatment. CGA supplementation improved (<em>P</em> &lt; 0.05) growth performance, jejunal morphology, jejunal barrier function, and immune function in DEX-treated broilers. Moreover, in DEX + CGA-treated broilers, the increase in gut microbiome diversity (<em>P</em> &lt; 0.05) was consistent with a change in taxonomic composition, especially in the Clostridiales vadin BB60_group. Additionally, the levels of short-chain fatty acids increased remarkably (<em>P</em> &lt; 0.01) after CGA supplementation. This was consistent with the Kyoto Encyclopedia of Genes and Genomes analysis results that the “pyruvate fermentation to butanoate” pathway was more enriched (<em>P</em> &lt; 0.01) in the DEX + CGA group than in the DEX group. Proteomics revealed that CGA treatment increased the expression of several health-promoting proteins, thymosin beta (TMSB4X) and legumain (LGMN), which were verified by multiple reaction monitoring. Metabolomics revealed that CGA treatment increased the expression of health-promoting metabolites (2,4-dihydroxy benzoic acid and homogentisic acid). Proteomic and metabolic analyses showed that CGA treatment regulated the peroxisome proliferator-activated receptor (PPAR) and mitogen-activated protein kinase (MAPK) pathways. Western blotting results support these findings. Pearson’s correlation analyses showed correlations (<em>P</em> &lt; 0.01) between altered immune function, jejunal barrier function, different microbiota, proteins, and metabolites parameters. Overall, our data indicate that CGA treatment increased growth performance and improved the immunological functions of DEX-treated broilers by regulating gut microbiota and the PPAR and MAPK pathways. The results offer novel insights into a CGA-mediated improvement in immune function and intestinal health.</p></div>","PeriodicalId":62604,"journal":{"name":"Animal Nutrition","volume":"14 ","pages":"Pages 383-402"},"PeriodicalIF":6.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/66/64/main.PMC10448031.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10481853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Endogenous mucin conveyed to the mucosa with microbes can assure lumen fermentation and large intestinal security–swine versus fowl","authors":"Edwin T. Moran ,&nbsp;Michael R. Bedford","doi":"10.1016/j.aninu.2023.06.010","DOIUrl":"10.1016/j.aninu.2023.06.010","url":null,"abstract":"<div><p>Endogenous protein leaving the ileum largely consists of accrued mucins from the upper gastrointestinal tract (GIT) that had resisted digestion. The amounts released rely on their mucosal generation during enteral feeding which vary with age as well as diet. These digestion resistant proteins of endogenous origin continue to be unavailable in the large intestine, whereas those of dietary origin provide amino acids that largely support the existing microbial population while denying limited amounts for absorption. Other mucins pre-exist within the large intestine as two layers at the lumen surface. A loose layer harboring a diverse microbial population is superimposed on the unstirred water layer (USWL) which simultaneously acts as an obstacle to microbes at the loose layer while performing as a molecular sieve for nutrients. The USWL is formed through interplay between enterocyte and goblet cells; however, the basis for presence of the loose layer is elusive. Large intestinal fermentation predominates within the colon of swine, whereas fowl employ their ceca. Motility within the colon of swine segregates fine materials into haustrae out-pocketings that parallel their placement within the ceca of fowl. Viscous mucins from small intestinal endogenous losses may envelop microbes within the large intestinal lumen to present successive adherents on the USWL that assemble its loose layer. The loose layer continually functions as a microbial reservoir in support of lumen fermentation. Microbial catabolism of mucin within the loose layer is known to be slow, but its proximity to the enterocyte is of advantage to enterocyte absorption with by-product amino acids fostering the USWL.</p></div>","PeriodicalId":62604,"journal":{"name":"Animal Nutrition","volume":"14 ","pages":"Pages 403-410"},"PeriodicalIF":6.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/c5/8f/main.PMC10457508.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10481854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sodium butyrate promotes gastrointestinal development of preweaning bull calves via inhibiting inflammation, balancing nutrient metabolism, and optimizing microbial community functions","authors":"Huiyue Zhong ,&nbsp;Wenjing Yu ,&nbsp;Min Wang ,&nbsp;Bo Lin ,&nbsp;Xuezhao Sun ,&nbsp;Nan Zheng ,&nbsp;Jiaqi Wang ,&nbsp;Shengguo Zhao","doi":"10.1016/j.aninu.2023.04.004","DOIUrl":"10.1016/j.aninu.2023.04.004","url":null,"abstract":"<div><p>Butyrate promotes the growth and gastrointestinal development of calves. But, the mechanisms behind its effects on signaling pathways of the gastrointestinal tract and rumen microbiome is unclear. This study aimed to reveal transcriptomic pathways of gastrointestinal epithelium and microbial community in response to butyrate supplementation in calves fed a high fiber starter. Fourteen Holstein bull calves (39.9 ± 3.7 kg, 14 d of age) were assigned to 2 groups (sodium butyrate group, SB; control group, Ctrl). The SB group received 0.5% SB supplementation. At d 51, the calves were slaughtered to obtain samples for analysis of the transcriptome of the rumen and jejunum epithelium as well as ruminal microbial metagenome. Sodium butyrate supplementation resulted in a higher performance in average daily gain and development of jejunum and rumen papillae. In both the rumen and jejunum epithelium, SB down-regulated pathways related to inflammation including NF-κB (<em>PPKCB, CXCL8, CXCL12</em>), interleukin-17 (<em>IL17A, IL17B, MMP9</em>), and chemokine (<em>CXCL12, CCL4, CCL8</em>) and up-regulated immune pathways including the intestinal immune network for immunoglobulin A (IgA) production (<em>CD28</em>). Meanwhile, in the jejunum epithelium, SB regulated pathways related to nutritional metabolism including nitrogen metabolism (<em>CA1, CA2, CA3</em>), synthesis and degradation of ketone bodies (<em>HMGCS2, BDH1</em>, <em>LOC100295719</em>), fat digestion and absorption (<em>PLA2G2F, APOA1, APOA4</em>), and the PPAR signaling pathway (<em>FABP4, FABP6, CYP4A11</em>). The metagenome showed that SB greatly increased the relative abundance of <em>Bacillus subtilis</em> and <em>Eubacterium limosum</em>, activated ruminal microbial carbohydrate metabolism pathways and increased the abundance of carbohydrate hydrolysis enzymes. In conclusion, butyrate exhibited promoting effects on growth and gastrointestinal development by inhibiting inflammation, enhancing immunity and energy harvesting, and activating microbial carbohydrate metabolism. These findings provide new insights into the potential mechanisms behind the beneficial effects of butyrate in calf nutrition.</p></div>","PeriodicalId":62604,"journal":{"name":"Animal Nutrition","volume":"14 ","pages":"Pages 88-100"},"PeriodicalIF":6.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/fb/4e/main.PMC10300058.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9737513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of restricted feeding on hen performance, egg quality and organ characteristics of individual laying hens","authors":"Doreen O. Anene ,&nbsp;Yeasmin Akter ,&nbsp;Peter C. Thomson ,&nbsp;Peter Groves ,&nbsp;Cormac J. O'Shea","doi":"10.1016/j.aninu.2023.05.001","DOIUrl":"10.1016/j.aninu.2023.05.001","url":null,"abstract":"<div><p>This study was to assess the impact of permanent or temporary restricted feeding on laying hen production traits, physiology, and egg quality. Two hundred and forty individually housed ISA Brown hens were monitored across 2 phases, assigned to 3 treatments: ad libitum feeding (ALF), temporary restricted feeding (TRF) and permanent restricted feeding (PRF), <em>n</em> = 80 hens per treatment. In Phase 1 (P1), 22 to 40 weeks, the TRF and PRF hens were offered 115 g of feed daily. In Phase 2 (P2), 41 to 46 weeks, the TRF hens were transitioned to ALF status while the ALF and PRF hens remained as in P1. From 35 to 40 weeks, eggs were collected once weekly from 15 hens per treatment and assessed for differences in albumen, yolk, and shell variables. At 45 weeks, 10 hens each from the ALF and PRF groups were euthanized and differences in organ characteristics were assessed. In P1, feed intake, feed to egg conversion ratio and body weight (BW) change were lower (<em>P</em> &lt; 0.01), while albumen height and Haugh unit were higher (<em>P</em> &lt; 0.01) in both PRF and TRF hen treatments compared to hens allocated the ALF treatment. In P2, TRF and ALF hens had a higher egg production and egg mass than PRF (<em>P</em> &lt; 0.01) than ALF. Body weight change in P2 was higher in TRF and similar in both ALF and PRF, while feed intake and feed conversion ratio were higher in TRF followed by ALF and least in the PRF treatment group (<em>P</em> &lt; 0.01). At 45 weeks ALF hens had a greater abdominal fat pad weight and fatty liver haemorrhagic syndrome lesion score compared to PRF. Restricting hens to 115 g of feed per day from point of lay restrained BW, improved feed conversion ratio and albumen quality and reduced abdominal fat pad deposition and clinical signs of fatty liver haemorrhagic syndrome in individually housed laying hens.</p></div>","PeriodicalId":62604,"journal":{"name":"Animal Nutrition","volume":"14 ","pages":"Pages 141-151"},"PeriodicalIF":6.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/f5/75/main.PMC10338298.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9825381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dietary lysozyme improves growth performance and intestinal barrier function of weaned piglets","authors":"Yuying Wu ,&nbsp;Bei Cheng ,&nbsp;Longxiang Ji ,&nbsp;Xiangyun Lv ,&nbsp;Yingying Feng ,&nbsp;Liu’an Li ,&nbsp;Xin Wu","doi":"10.1016/j.aninu.2023.06.003","DOIUrl":"10.1016/j.aninu.2023.06.003","url":null,"abstract":"<div><p>Lysozyme (LZ) is a purely natural, nonpolluting and nonspecific immune factor, which has beneficial effects on the healthy development of animals. In this study, the influences of LZ on the growth performance and intestinal barrier of weaned piglets were studied. A total of 48 weaned piglets (Landrace × Yorkshire, 22 d old) were randomly divided into a control group (basal diet) and a LZ group (0.1% LZ diet) for 19 d. The results showed that LZ could significantly improve the average daily gain (ADG, <em>P</em> &lt; 0.05) and average daily feed intake (ADFI, <em>P</em> &lt; 0.05). LZ also improved the intestinal morphology and significantly increased the expression of occludin in the jejunum (<em>P</em> &lt; 0.05). In addition, LZ down-regulated the expression of interleukin-1β (<em>IL-1β</em>, <em>P</em> &lt; 0.05) and tumor necrosis factor-α (<em>TNF-α</em>, <em>P</em> &lt; 0.05), and inhibited the expression of the genes in the nuclear factor-k-gene binding (<em>NF-κB</em>, <em>P</em> &lt; 0.05) signaling pathway. More importantly, the analysis of intestinal flora showed LZ increased the abundance of Firmicutes (<em>P</em> &lt; 0.05) and the ratio of Firmicutes to Bacteroidota (<em>P</em> = 0.09) at the phylum level, and increased the abundance of <em>Clostridium_sensu_stricto_1</em> (<em>P</em> &lt; 0.05) and reduced the abundance of <em>Olsenella</em> and <em>Prevotella</em> (<em>P</em> &lt; 0.05) at the genus level. In short, this study proved that LZ could effectively improve the growth performance, relieve inflammation and improve the intestinal barrier function of weaned piglets. These findings provided an important theoretical basis for the application of LZ in pig production.</p></div>","PeriodicalId":62604,"journal":{"name":"Animal Nutrition","volume":"14 ","pages":"Pages 249-258"},"PeriodicalIF":6.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/76/76/main.PMC10472418.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10150815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy of soy protein concentrate replacing animal protein supplements in mucosa-associated microbiota, intestinal health, and growth performance of nursery pigs","authors":"Zixiao Deng,&nbsp;Marcos Elias Duarte,&nbsp;Sung Woo Kim","doi":"10.1016/j.aninu.2023.06.007","DOIUrl":"10.1016/j.aninu.2023.06.007","url":null,"abstract":"<div><p>This study investigated the effects of using soy protein concentrate (SPC) to replace animal protein supplements on mucosa-associated microbiota, intestinal health, and growth performance of nursery pigs. Fifty-six newly weaned pigs (BW = 6.4 ± 0.6 kg) were allotted to 5 treatments in a randomized complete block design. Pigs were fed for 35 d in 3 phases (P; 1, 2, 3) for 10, 12, 13 d, respectively. Dietary treatments were: (1) basal diet with fish meal (P1: 4%, P2: 2%, and P3: 1%), poultry meal (P1: 10%, P2: 8%, and P3: 4%), and blood plasma (P1: 4%, P2: 2%, and P3: 1%), where SPC replacing none (NC); (2) basal diet with SPC replacing fish meal (RFM); (3) basal diet with SPC replacing poultry meal (RPM); (4) basal diet with SPC replacing blood plasma (RBP); and (5) basal diet with SPC replacing all animal protein supplements (PC). Growth performance was recorded for each phase. Pigs were euthanized on d 35 to collect jejunal mucosa and tissue to evaluate intestinal health and microbiota, and ileal digesta to measure apparent ileal digestibility (AID) of nutrients. Data were analyzed using the MIXED procedure of SAS. Overall, RFM, RPM, and RBP did not affect growth performance, whereas PC decreased (<em>P</em> &lt; 0.05) ADG and ADFI. The RPM increased (<em>P</em> &lt; 0.05) <em>Prevotella stercorea</em> and decreased (<em>P</em> &lt; 0.05) <em>Helicobacter rappini</em>. The PC decreased (<em>P</em> &lt; 0.05) <em>H. rappini</em>, whilst increasing (<em>P</em> &lt; 0.05) <em>Prevotella copri</em>, <em>Propionibacterium acnes</em>, and <em>Pelomonas aquatica</em>. The RFM tended to increase (<em>P</em> = 0.096) immunoglobulin A in the jejunum. The PC tended to decrease (<em>P</em> = 0.078) jejunal crypt cell proliferation. There were no differences in the villus height, AID of nutrients, intestinal inflammation, and intestinal oxidative stress among treatments. In conclusion, SPC can replace fish meal, poultry meal, or blood plasma individually without affecting growth performance and intestinal health, and AID of nutrients of nursery pigs. Particularly SPC replacing poultry meal benefitted intestinal health by reducing <em>H. rappini</em> and increasing <em>P. stercorea</em>. However, SPC replacing all three animal protein supplements reduced growth of nursery pigs mainly by reducing feed intake.</p></div>","PeriodicalId":62604,"journal":{"name":"Animal Nutrition","volume":"14 ","pages":"Pages 235-248"},"PeriodicalIF":6.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10432921/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10051625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Maternal sodium acetate supplementation promotes lactation performance of sows and their offspring growth performance","authors":"Yingao Qi ,&nbsp;Tenghui Zheng ,&nbsp;Siwang Yang ,&nbsp;Qianzi Zhang ,&nbsp;Baofeng Li ,&nbsp;Xiangfang Zeng ,&nbsp;Yongxing Zhong ,&nbsp;Fang Chen ,&nbsp;Wutai Guan ,&nbsp;Shihai Zhang","doi":"10.1016/j.aninu.2023.04.003","DOIUrl":"10.1016/j.aninu.2023.04.003","url":null,"abstract":"<div><p>Milk yield and composition are critical determining factors for the early growth and development of neonates. The objective of this experiment was to comprehensively evaluate the effects of dietary sodium acetate (SA) supplementation on the milk yield and composition of sows and the growth performance of their offspring. A total of 80 sows (Landrace × Yorkshire, 3 to 6 parity) were randomly assigned to 2 groups (with or without 0.1% SA) from d 85 of gestation to d 21 of lactation. The result shows that maternal 0.1% SA supplementation significantly increased sows milk yield, milk fat, immunoglobulin A (IgA) and IgG content in milk (<em>P</em> &lt; 0.05), with the up-regulation of short-chain fatty acids receptors (GPR41 and GPR43) expression and the activation of mammalian target of rapamycin complex C1 (mTORC1) signaling pathway. Consistently, in our in vitro experiment, SA also activated mTORC1 signaling in porcine mammary epithelial cells (<em>P</em> &lt; 0.05). Furthermore, the improvement of milk quality and quantity caused by maternal SA supplementation led to the increase in body weight (BW) and average daily weight gain (ADG) of weaning piglets, with the improvement of gut health and colonization of the beneficial bacteria (<em>P</em> &lt; 0.05). In conclusion, maternal supplementation of 0.1% SA improved the lactation performance (milk yield and milk fat) of sows, possibly with the activation of GPR41/GPR43-mTORC1 signaling. Furthermore, enhanced milk quality improved growth performance, gut health and the colonization of beneficial microbial flora of their piglets.</p></div>","PeriodicalId":62604,"journal":{"name":"Animal Nutrition","volume":"14 ","pages":"Pages 213-224"},"PeriodicalIF":6.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d5/0e/main.PMC10362078.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9864401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Porcine intestinal antimicrobial peptide as an in-feed antibiotic alternative improves intestinal digestion and immunity by shaping the gut microbiota in weaned piglets","authors":"Fengjie Ji ,&nbsp;Huansheng Yang ,&nbsp;Qiye Wang ,&nbsp;Jianzhong Li ,&nbsp;Hanlin Zhou ,&nbsp;Shengmin Liu","doi":"10.1016/j.aninu.2023.04.001","DOIUrl":"10.1016/j.aninu.2023.04.001","url":null,"abstract":"<div><p>Antibiotic resistance of pathogens, which is caused by the abuse of in-feed antibiotics, threatens the sustainable development of livestock production. The present study aimed to investigate the efficiency of porcine intestinal antimicrobial peptide (PIAP) as an alternative to in-feed antibiotics in terms of growth performance, intestinal morphology, digestive enzymes and immunity, and microbiota community of the post-weaning piglets. A total of 204 piglets (Duroc × Landrace × Yorkshire, weaned at 28 d age) with a similar body weight of 7.97 ± 1.04 kg were randomly allocated to 4 groups (51 piglets per group): (1) control group: basal diet; (2) AB group: antibiotic, basal diet + chlortetracycline (1000 mg/kg from d 1 to 24; 500 mg/kg from d 25 to 37); (3) P1 group: basal diet + a relatively low dose of PIAP (400 mg/kg from d 1 to 24; 300 mg/kg from d 25 to 37); (4) P2 group, basal diet + a relatively high dose of PIAP (600 mg/kg from d 1 to 24; 500 mg/kg from d 25 to 37). The results showed that serum indicators of hepatocyte damage and relative organ weight were not affected by these treatments (<em>P</em> &gt; 0.05). Compared with the AB treatment, the P1 treatment remarkably decreased jejunal crypt depth and increased jejunal and ileal villus height:crypt depth ratio (<em>P</em> &lt; 0.05). The values of jejunal maltase, lactase, sucrase, intestinal alkaline phosphatase, and secretory immunoglobulin A (SIgA) in the P1 group were sharply increased compared with those in the control and P2 groups (<em>P</em> &lt; 0.05). Compared with the control group, the P1 group decreased serum concentrations of D-lactate, diamine oxidase, and endotoxin (<em>P</em> &lt; 0.05), and increased the abundance of <em>Lactobacillus reuteri</em> (<em>P</em> &lt; 0.05) in the colonic feces. Furthermore, there was a positive correlation between the abundance of <em>L. reuteri</em> and the concentrations of maltase, lactase, sucrase, and SIgA (<em>P</em> &lt; 0.05). Collectively, dietary supplementation with a relatively low dose of PIAP (400 mg/kg from d 1 to 24; 300 mg/kg from d 25 to 37) demonstrates beneficial effects on intestinal morphology, digestive enzymes, immunity, and permeability by shaping the gut microbiota composition in weaned piglets. This study will provide a valuable reference for using PIAP as an in-feed antibiotic alternative in swine production.</p></div>","PeriodicalId":62604,"journal":{"name":"Animal Nutrition","volume":"14 ","pages":"Pages 43-55"},"PeriodicalIF":6.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/2c/2b/main.PMC10208801.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9528858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reply to: “Absorption of methionine sources in animals—is there more to know?” — Yes, there is more to know!","authors":"Andreas Lemme,&nbsp;Juliano Cesar de Paula Dorigam,&nbsp;Stefan Mack","doi":"10.1016/j.aninu.2023.01.010","DOIUrl":"10.1016/j.aninu.2023.01.010","url":null,"abstract":"","PeriodicalId":62604,"journal":{"name":"Animal Nutrition","volume":"14 ","pages":"Pages 67-69"},"PeriodicalIF":6.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/27/32/main.PMC10220464.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9548033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}