Archives of Animal Nutrition最新文献

{"title":"Determination of ileal endogenous nitrogen losses and true ileal nitrogen digestibility during non-steady-state conditions of the 15N-isotope dilution technique","authors":"C. A. (Carina) Steendam, Martin W.A. Verstegen, Wouter H. Hendriks","doi":"10.1080/1745039x.2024.2322201","DOIUrl":"https://doi.org/10.1080/1745039x.2024.2322201","url":null,"abstract":"The aim was to determine ileal endogenous nitrogen losses (ENL) and true ileal N-digestibility (TD-N) under non-steady-state conditions of the 15N-isotope dilution technique (15N-IDT), using diets ...","PeriodicalId":8157,"journal":{"name":"Archives of Animal Nutrition","volume":"10 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140593944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance and nutrient digestibility of growing pigs fed highly or low fermentable coarse or finely ground fibre-rich feedstuffs.","authors":"Eva-Maria Saliu, Johannes Schulze Holthausen, Volker Wilke, Jürgen Zentek","doi":"10.1080/1745039X.2024.2368284","DOIUrl":"10.1080/1745039X.2024.2368284","url":null,"abstract":"<p><p>Dietary fibre is mainly classified according to its chemical characteristics but structure and particle size of fibre-rich feedstuff can also be decisive for digestion and performance. So far, only few studies investigated this in pigs. This experiment aimed to compare coarse and finely ground dried hemp plants and apple pomace regarding performance and ileal and total tract nutrient digestibility of growing pigs. Coarse or finely ground apple pomace or dried hemp plants were added to the diet of 56 nine weeks old growing pigs (DanBred x Duroc), housed in flat decks with each 2 animals. The growing pigs received the experimental diets for three weeks while performance was recorded. Eight pigs per group were sacrificed and digesta and organ tissue sampled. The stomach health was evaluated by visually scoring of the mucosa integrity. Apparent ileal (AID) and total tract digestibility (ATTD) were calculated using titanium dioxide as marker. Statistical analyses were performed using two-way ANOVA (<i>p</i> < 0.05). The highest feed intake (fibre particle size, <i>p</i> = 0.018) and bodyweight gain (fibre particle size, <i>p</i> = 0.018; fibre source x particle size interaction, <i>p</i> = 0.040), was observed in animals fed finely ground apple pomace, while the feed conversion ratio was 8-12% lower in pigs fed finely ground fibre sources (<i>p</i> = 0.012). No differences in stomach mucosa integrity were detected between the groups. The relative pancreas (<i>p</i> = 0.045), stomach (<i>p</i> < 0.001), and jejunum (<i>p</i> = 0.010) weights were higher in animals fed diets containing apple pomace. In contrast, the relative liver, caecum and colon weights were not affected by fibre source or particle size. The AID of protein and amino acids was not affected, while ATTD was increased by fibre source (hemp vs. apple pomace) reducing faecal nitrogen excretion. The AID of calcium was increased when diets contained apple pomace (<i>p</i> < 0.001), while zinc AID and ATTD were enhanced when diets contained dried hemp (<i>p</i> = 0.016; <i>p</i> = 0.016, respectively). Our results suggest that the structure as well as the chemical characteristics should be considered in a future fibre evaluation system in pigs.</p>","PeriodicalId":8157,"journal":{"name":"Archives of Animal Nutrition","volume":" ","pages":"142-158"},"PeriodicalIF":2.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141465751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of feeding black soldier fly larvae meal based diet on canine skin barrier function, organic antioxidant defence and blood biochemistry.","authors":"Rafaela Silva Carvalho, Rayssa Kelly Nóbrega Cardoso, Luna Anália Teixeira Amorim Dos Santos, Mirna Xavier Sales Dos Santos, Elias Leocadio Santos Neto, Wilmer Alejandro Zamora Restan, Artem Savinov, Aman Paul, Bruna Agy Loureiro","doi":"10.1080/1745039X.2024.2375463","DOIUrl":"10.1080/1745039X.2024.2375463","url":null,"abstract":"<p><p>Black soldier fly meal in pet diets is gaining acceptance. This study aimed to assess the use of black soldier fly larvae defatted meal (BSFL) and its impact on blood parameters, biochemical markers, organic antioxidant capacity, skin barrier function and skin and coat quality. A cross-over study involved eight beagle dogs with two periods of 50 days each and a washout period of seven days in between. Two approximately iso-nutritive extruded diets were evaluated, the first containing 29.5% BSFL meal and a control diet containing 26% poultry by-product meal (PBP) as protein source. Skin and coat evaluations and blood collections were conducted before and after each period. Skin barrier function was assessed by measurement of trans epidermal water loss (TEWL) and stratum corneum hydration (SCH) in belly and pinna of the dogs on days 0, 15, 30, and 45 of each period. A trend for higher antioxidant effect significant reduction in serum scavenging capacity was found with PBP for BSFL diet trough malondialdehyde and Vitamin E measurement in dog's serum 2,2-diphenyl-1-picryl-hydrazyl (DPPH) assay. When fed PBP diet dogs exhibited reduction in serum cholesterol triglycerides and decreased LDL levels after 50 days, while dogs fed BSFL presented significant reduction in ALT. TEWL was significantly reduced in belly and pinna over time when dogs were fed BSFL, and TEWL in belly was significantly lower in dogs fed BSFL in comparison to PBP. while Increased SCH was also higher for the BSFL group observed in the same along the feeding period in comparison to PBP, indicating improved ability of the dogs to retain water and keep skin moisture. Improvement skin barrier function could be related to fatty acids from BSFL and increased sebaceous lipids in skin. These are responsible for to avoid water loss and improve skin protection against microbial insults. Inclusion of BSFL as protein source did not promote negative changes in blood biochemistry and had minor antioxidant effect in healthy dogs. However, it proved effective in improving skin barrier function, making BSFL a valuable alternative protein source for dogs, particularly those with sensitive skin or allergies manifesting on the skin.</p>","PeriodicalId":8157,"journal":{"name":"Archives of Animal Nutrition","volume":" ","pages":"159-177"},"PeriodicalIF":2.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141747286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of dietary crude protein content and resistant starch supplementation on growth performance, intestinal histomorphology and microbial metabolites in weaned pigs.","authors":"Jinyoung Lee, J Caroline González-Vega, John Kyaw Htoo, Charles Martin Nyachoti","doi":"10.1080/1745039X.2024.2376093","DOIUrl":"10.1080/1745039X.2024.2376093","url":null,"abstract":"<p><p>A 4-week study was conducted to evaluate the effects of dietary crude protein (<b>CP</b>) content and resistant starch (<b>RS</b>) supplementation on growth performance, intestinal histomorphology and microbial metabolites of weaned pigs. A total of 96 pigs (7.06 ± 0.45 kg body weight) were assigned to 1 of 4 diets in a randomised complete block design involving a 2 (CP levels) × 2 (without or with RS) factorial arrangement to give 8 replicate pens and 3 pigs per pen. Body weight and feed disappearance were recorded weekly, and the faecal consistency score was determined every morning. Blood was sampled on days 1, 14 and 28 from one pig per pen, and the same pig was euthanised on day 28 to collect ileal tissue and ileal and colon digesta. Data were analysed using the MIXED procedure of SAS. The average daily gain and gain:feed ratio were lower (<i>p</i> < 0.05) in pigs fed low crude protein (<b>LCP</b>) diets compared to those fed high CP (<b>HCP</b>) diets during week 3 and overall period. The analysed Lys, Met+Cys and Thr in feed were lower than calculated values, particularly in LCP diets, which may have affected performance. Pigs fed the LCP diets had longer (<i>p</i> < 0.05) ileal villi and higher villus height to crypt depth ratios than those fed the HCP diets, and RS supplementation increased (<i>p</i> < 0.05) ileal villus height. Interactions (<i>p</i> < 0.05) between dietary CP content and RS inclusion were observed for short-chain fatty acid concentration in the ileum and colon in phase 2. There was no difference in propionic acid (ileum) or butyric acid (colon) concentrations among pigs fed HCP diets, however, the butyric acid concentration increased in pigs fed the LCP diet when supplemented with RS. Reducing dietary CP lowered (<i>p</i> < 0.05) faecal score, plasma urea nitrogen and digesta ammonia content. Overall, feeding LCP diets reduced growth performance but improved gut morphology in weaned pigs. Feeding the LCP diet with RS supplementation modulated concentrations of ileal propionic acid and colonic butyric acid in weaned pigs.</p>","PeriodicalId":8157,"journal":{"name":"Archives of Animal Nutrition","volume":" ","pages":"192-207"},"PeriodicalIF":2.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141756774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Supplementing zebu cattle with crop co-products helps to reduce enteric emissions in West Africa.","authors":"Gérard Xavier Gbenou, Mohamed Habibou Assouma, Denis Bastianelli, Timbilfou Kiendrebeogo, Laurent Bonnal, Nouhoun Zampaligre, Bérénice Bois, Souleymane Sanogo, Ollo Sib, Cécile Martin, Luc Hippolyte Dossa","doi":"10.1080/1745039X.2024.2356326","DOIUrl":"10.1080/1745039X.2024.2356326","url":null,"abstract":"<p><p>In Africa, a wide variety of diets (forage + crop co-products or other agricultural by-products) is being used by livestock farmers in different production systems to adapt to climate change. This study aimed to assess the performance of various local feeding strategies on Sudanese Fulani zebu cattle. Two experiments were carried out on 10 steers aged initially 33 months (142 kg body weight - BW). The animals were fed eight different diets at an intake level of 3.2% LW in dry matter (DM), including two control diets of 100% rangeland forage (100% RF) and six experimental diets made up of forage and crop co-products (75:25 DM ratio). In the first experiment, the control diet was made up of rangeland forage (RF) and supplements consisted of four cereal co-products (CC), i.e. maize, sorghum, millet, and rice straws. In the second experiment, the control diet consisted of <i>Panicum maximum</i> (Pmax) hay, and the supplements tested were two legume co-products (LC), i.e. cowpea and peanut haulms. Each experiment lasted 3 weeks, including 2 weeks of adaptation to the diet and 1 week of data collection on individual animals (intake, apparent digestibility, and enteric methane). The NDF content of the diets was different within each experiment (<i>p</i> < 0.05). Among diets containing CC, DM intake [g/kg BW] was significantly higher (+31%; <i>p</i> = 0.025) for the diet containing rice straw than for the other diets, which showed similar levels to the RF diet. Among diets containing LC, intake was significantly higher (<i>p</i> = 0.004) than for the Pmax diet. Intake was higher for the peanut haulm diet than for the cowpea haulm diet. The DM digestibility was similar between the different diets in each experiment. Enteric methane (eCH₄) yield [g/kg DMI] from the CC and LC-containing diets were reduced by an average of 23% and 20% compared to the RF and Pmax control diets respectively. Raising awareness among agro-pastoralists about the use of crop co-products offers real prospects for eCH₄ emissions mitigation in the Sahel region.</p>","PeriodicalId":8157,"journal":{"name":"Archives of Animal Nutrition","volume":" ","pages":"125-141"},"PeriodicalIF":2.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141439999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Short-term exposure of dairy cows to pyrrolizidine alkaloids from tansy ragwort (<i>Jacobaea vulgaris</i> Gaertn.): effects on organs and indicators of energy metabolism.","authors":"Kirsten Knoop, Jana Frahm, Susanne Kersten, Jeannette Kluess, Ulrich Meyer, Dirk von Soosten, Andreas Beineke, Janine Saltzmann, Sven Dänicke","doi":"10.1080/1745039X.2024.2350095","DOIUrl":"10.1080/1745039X.2024.2350095","url":null,"abstract":"<p><p>Preserved feed from meadows contaminated with ragwort (<i>Jacobaea vulgaris</i>, Gaertn.) may expose livestock to pyrrolizidine alkaloids (PA). Dairy cows are considered to be very susceptible animals and a PA ingestion can lead to liver and further organ damages and even death. Due to the lack of data, the present study aimed to evaluate critical PA doses based on organ effects, with a special focus on liver lesions and on indicators of energy metabolism. Therefore, 16 dairy cows (<i>n</i> = 4 per group) were exposed to increasing PA doses (group: CON_Molasses: <0.001 mg PA/kg body weight (BW)/day (d); PA1: 0.47 mg PA/kg BW/d; PA2: 0.95 mg PA/kg BW/d; PA3: 1.91 mg PA/kg BW/d) for 28 days. Constant dosing was ensured by a defined PA extract administered orally once daily. Histological examinations of the livers showed infiltration by immune cells, higher proportions of apoptotic cells and enlargement of hepatocyte nuclei in the highest exposed group. In addition, bile volume increased with PA dose, which may indicate a cholestasis. Despite the signs of incipient liver damage, liver lipid content and clinical chemical parameters related to energy metabolism, such as glucose, non-esterified fatty acids and βhydroxybutyrate, remained unaffected. Fat depot masses were also not significantly altered over time, suggesting that PA exposure did not induce a wasting syndrome. The liver showed slight microscopic changes already at a dosage of 0.95 mg PA/kg BW/d. However, the short-term metabolic indicators of energy status, lipolysis and ketogenesis, glucose, NEFA and BHB, as well as changes in fat depot, which serves as a longer-term indicator of lipolysis, remained unaffected in all treatment groups in the chosen scenario. These findings suggest that despite histopathological and clinical-chemical evidence of PA-associated hepatocellular lesions, liver function was not compromised.</p>","PeriodicalId":8157,"journal":{"name":"Archives of Animal Nutrition","volume":" ","pages":"109-124"},"PeriodicalIF":2.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141154592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of dietary local hemp seed meal as soybean meal alternative on productive performance, egg quality and yolk fatty acid composition of laying hens.","authors":"Ergin Öztürk, Arif Darmawan, Şevket Özlü, Samet Hasan Abacı","doi":"10.1080/1745039X.2024.2373485","DOIUrl":"10.1080/1745039X.2024.2373485","url":null,"abstract":"<p><p>Supply problems and rising soybean meal prices have an impact on increasing feed costs. Hemp seed meal (HSM) with high protein content has the potential to be used as an alternative to soybean meal. This study evaluated the impact of dietary HSM of Narlı Sarayı variety as a substitute for soybean meal on productive performances, egg quality and yolk fatty acid composition. A total of 120 Lohmann Brown laying hens aged 50 weeks were allocated into 4 groups and 10 repetitions. Birds received treatment without HSM (control group), or soybean meal substituted with 4%, 8% and 12% HSM. Dietary 4% significantly increased (<i>p</i> < 0.05) egg production and decreased FCR compared with 8% and 12% HSM group but did not differ from the control group in an overall period of 6 weeks. The inclusion of the 12% HSM group significantly decreased (<i>p</i> < 0.05) egg production. Meanwhile, there was no influence of hemp seed meal (<i>p</i> > 0.05) on feed intake, egg weight, body weight change, egg shape index, albumen index, albumen weight, Haugh unit, yolk weight, yolk index and eggshell thickness. Dietary 8% and 12% HSM significantly increased (<i>p</i> < 0.05) eggshell weight and yolk colour compared with control and 4% HSM groups. There was a significant increase (<i>p</i> < 0.05) in omega-3 fatty acid concentration and a decrease in yolk omega-6 to omega-3 fatty acids ratio with an increase in dietary HSM. It was concluded that dietary up to 12% HSM of the Narlı Sarayı variety decreased egg production and increased FCR. Increasing dietary levels of HSM increased eggshell weight, yolk colour and omega-3 fatty acids content and decreased the omega-6 to omega-3 fatty acids ratio.</p>","PeriodicalId":8157,"journal":{"name":"Archives of Animal Nutrition","volume":" ","pages":"178-191"},"PeriodicalIF":2.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141756775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inclusion of a Bacillus-based probiotic in non-starch polysaccharides-rich broiler diets","authors":"Farshad Goodarzi Boroojeni, Yada Duangnumsawang, Damian Józefiak, Marta Pachocka, Dorthe Sandvang, Jürgen Zentek","doi":"10.1080/1745039x.2023.2284530","DOIUrl":"https://doi.org/10.1080/1745039x.2023.2284530","url":null,"abstract":"This study examined the effects of a 3-strain Bacillus-based probiotic (BP; Bacillus amyloliquefaciens and two Bacillus subtilis) in broiler diets with different rye levels on performance, mucus, v...","PeriodicalId":8157,"journal":{"name":"Archives of Animal Nutrition","volume":"4 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139669206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"<i>In vitro</i> gastrointestinal simulated digestion of three plant proteins: determination of digestion rate, free amino acids and peptide contents.","authors":"Songjun Wang, Tong Liu, Huasong Bai, Wenhui Gong, Zhanzhong Wang","doi":"10.1080/1745039X.2024.2312694","DOIUrl":"10.1080/1745039X.2024.2312694","url":null,"abstract":"<p><p>Cassava protein (CP), barley protein (BP) and yellow pea protein (YPP) are important nutrient and integral constituent of staple in pet foods. It is known that the digestion of proteins directly influences their absorption and utilisation. In the present work, we performed <i>in vitro</i> simulated gastrointestinal digestion of three plant proteins as a staple for dog and cat food. The digestion rate of CP, BP and YPP in dog food was 56.33 ± 0.90%, 48.53 ± 0.91%, and 66.96 ± 0.37%, respectively, whereas the digestion rate of CP, BP, and YPP in cat food was 66.25 ± 0.72%, 43.42 ± 0.83%, and 58.05 ± 0.85%, respectively. Using SDS-polyacrylamide gel electrophoresis to determine the molecular weight (MW) of each protein and the products of their digestion, it was revealed that MW of digestion samples decreased, and MW during the small intestine phase was lower than that during the gastric phase. Peptide sequences of digested products were identified by liquid chromatography-tandem mass spectrometry (LC-MS/MS), and it was found that the total number of peptides in the small intestine digestion samples was higher than that in the gastric phase samples. The MW of peptides obtained from CP was within the range of 1000-1500 Da, while MW of peptides derived from BP and YPP was within the range of 400-2000 Da. In addition, free amino acids were mainly produced in the small intestine phase. Furthermore, the percentage of essential amino acids in the small intestine phase (63 ~ 82%) was higher than that in the gastric phase (37 ~ 63%). Taken together, these findings contribute to the current understanding of the utilisation of plant proteins in dog and cat foods and provide important insights into the selection and application of plant proteins as a staple in dog and cat foods.</p>","PeriodicalId":8157,"journal":{"name":"Archives of Animal Nutrition","volume":" ","pages":"30-44"},"PeriodicalIF":2.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140020835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influences of dietary-reduced nitrogen (N) and phosphorus (P) on chemical body composition, N and P retention and health traits of contemporary barrows.","authors":"Elisabeth Beckmüller, Jeannette Kluess, Liane Hüther, Susanne Kersten, Mareike Kölln, Christian Visscher, Sven Dänicke, Angelika Grümpel-Schlüter","doi":"10.1080/1745039X.2024.2321709","DOIUrl":"10.1080/1745039X.2024.2321709","url":null,"abstract":"<p><p>Farmgate balances are used as a tool for monitoring nutrient surpluses at farm level. In Germany, preparation of farmgate balances is legally mandatory and also requires data on chemical body composition, especially concentration of nitrogen (N) and phosphorus (P), of farm animals. It is well known that increased N and P efficiency results in lowered N and P excretions with the manure and therefore mitigates negative consequences of high N and P release into the environment (e.g. eutrophication of surface waters), especially in areas with high livestock density. In this context, feeding <i>N</i>- and <i>P</i>-reduced diets can be a strategy for increasing N and P efficiency in fattening pigs. To investigate the influence of <i>N</i>- and <i>P</i>-reduced diets on chemical body composition of barrows and to update current used data basis, 8 barrows were slaughtered after a balance trial and their bodies were subjected to full body analysis. During the balance trial, pigs received the control diet (CON) meeting common nutrient requirements or the <i>N</i>- and <i>P</i>-reduced diet (NPred) in a three-phased feeding regimen (<i>n</i> = 4/diet, 3 weeks/phase). Pigs were slaughtered with an average live weight (LW) of 123.3 ± 7.5 kg and carcasses were manually dissected in four fractions. Fractions were analysed for nutrient concentration. Furthermore, organs were weighed individually and blood serum was sampled during exsanguination. Serum samples were analysed for clinical-chemical traits. Chemical body composition did not significantly differ between NPred- and CON-fed pigs. N concentration was 23.3 ± 0.3 and 24.5 ± 1.0 g/kg, P concentration was 5.2 ± 0.1 and 5.5 ± 0.4 g/kg in the empty body of NPred- and CON-fed pigs (<i>p</i> = 0.073, 0.164). N and P retention between the experiment's start and slaughter did not differ between the feeding groups (<i>p</i> = 0.641, 0.240). Variables related to liver integrity, energy metabolism and electrolytes were similar between CON- and NPred-fed pigs. Traits related to protein metabolism showed significantly reduced concentrations of urea and albumin in NPred-fed pigs (<i>p</i> = 0.013, 0.025), but no hypoalbuminaemia. Results suggest that <i>N</i>- and <i>P</i>-reduced feeding does not significantly affect chemical body composition of contemporary barrows.</p>","PeriodicalId":8157,"journal":{"name":"Archives of Animal Nutrition","volume":" ","pages":"78-94"},"PeriodicalIF":2.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140179245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}