Translational Animal Science最新文献

{"title":"Genomic prediction via reaction norm models for pregnancy loss using temperature humidity index in brahman cattle.","authors":"Daniel Cardona-Cifuentes, Lucia G de Albuquerque, Ignacio Aguilar, Milagros Arias, Luis Camaripano, Luis Gabriel Gonzalez-Herrera, Lúcio F M Mota, Fernando Baldi, Sabrina T Amorim","doi":"10.1093/tas/txag078","DOIUrl":"10.1093/tas/txag078","url":null,"abstract":"<p><p>Brahman cattle are widely used in tropical production systems due to their adaptability; however, reproductive efficiency remains constrained by pregnancy loss (PL), particularly under heat stress. This study evaluated genotype-by-environment (G × E) interactions for PL using reaction norm models incorporating the temperature-humidity index (THI) as an environmental descriptor. Records from Brahman heifers in two Bolivian herds were combined with weather data to calculate accumulated THI for the 30 d before and after rectal palpation. Pregnancy loss, defined from diagnoses performed between 60 and 150 d of gestation, was analyzed as a binary trait using threshold RNM fitted with either a pedigree-based relationship matrix ( <math><mi>A</mi></math> ) or a combined pedigree-genomic matrix ( <math><mi>H</mi></math> ). Genetic variation was detected for both the intercept and slope of the reaction norm. Heritability of the intercept increased from 0.23 ( <math><mi>A</mi></math> ) to 0.37 ( <math><mi>H</mi></math> ), whereas the slope showed moderate heritability (0.32 for <math><mi>A</mi></math> ; 0.33 for <math><mi>H</mi></math> ). Mean heritability of PL across accumulated THI levels was 0.10 ( <math><mi>A</mi></math> ) and 0.13 ( <math><mi>H</mi></math> ). Negative genetic correlations between intercept and slope (-0.41 for <math><mi>A</mi></math> ; -0.34 for <math><mi>H</mi></math> ) and between extreme THI levels (-0.65 for <math><mi>A</mi></math> ; -0.49 for <math><mi>H</mi></math> ) indicate substantial reranking of animals under contrasting thermal conditions. Although variance component estimates were broadly similar between models, incorporating genomic information improved prediction accuracy and reduced dispersion of breeding values. These results demonstrate that accumulated THI captures meaningful environmental sensitivity for PL and that integrating genomic information with reaction norm models enhances selection for reproductive resilience in Brahman cattle under tropical conditions.</p>","PeriodicalId":23272,"journal":{"name":"Translational Animal Science","volume":"10 ","pages":"txag078"},"PeriodicalIF":1.9,"publicationDate":"2026-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13287998/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148319288","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":"From passive consumers to critical evaluators: promoting media literacy in animal science.","authors":"Ciana M Bowhay","doi":"10.1093/tas/txag073","DOIUrl":"10.1093/tas/txag073","url":null,"abstract":"<p><p>Media literacy is increasingly vital in animal science education, where students face widespread misinformation about production practices, nutrition, and animal health and welfare. Students often overestimate their ability to discern credible sources from misinformation which can create barriers to learning when misconceptions interfere with integration of new knowledge. This study examined how an assignment grounded in principles of the critical media literacy framework influenced students' evaluation of credibility and perceptions of misinformation. This assignment was implemented in two semesters of an undergraduate Animal Nutrition course (<i>n</i> = 42) and required students to critically evaluate media related to course content. Student assignments and reflections were analyzed using qualitative open coding to identify emerging themes. Students indicated that prior to engaging in the assignment, they relied on superficial indicators of credibility like perceived author expertise, presentation style, or popularity. After completing the project, students reported greater awareness of bias and misinformation and commitment to deeper evaluation strategies when consuming media. Many indicated intentions to research claims more thoroughly, approach popular media about animal science with increased skepticism, and assess the credibility of authors before accepting their claims. These findings suggest that integration of media literacy activities in animal science curricula can support critical reflection practices on students' evaluation of information. This provides conditions consistent with transformative learning by prompting students to challenge existing assumptions and adopt a more reflective approach when navigating digital media. Developing these skills is essential for future animal science professionals to critically evaluate information and engage credibly in scientific discourse within a rapidly evolving digital landscape.</p>","PeriodicalId":23272,"journal":{"name":"Translational Animal Science","volume":"10 ","pages":"txag073"},"PeriodicalIF":1.9,"publicationDate":"2026-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13282084/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148296404","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":"Longer theoretical length of cut in whole-plant sorghum silage increased feed intake and starch digestibility in growing beef steers.","authors":"Federico Fernandez, Federico Tarnonsky, Adrian Rodriguez-Guiñazu, Ruben Arias, Jorge Delgado-Caffé, Leandro O Abdelhadi, Nicolas DiLorenzo","doi":"10.1093/tas/txag077","DOIUrl":"10.1093/tas/txag077","url":null,"abstract":"<p><p>This study investigated the growth performance of beef steers fed diets primarily composed of sorghum silage differing in theoretical length of cut (TLOC). Seventy-two Angus steers (200 ± 40 kg of initial body weight) were housed in 12 pens (6 steers/pen) and utilized in a randomized complete block design for an 84-d feeding trial. The experiment compared two dietary treatments (6 pens/treatment): one containing 89% sorghum silage in dry matter (DM) basis chopped at a 15 mm TLOC and another with 89% sorghum silage (DM basis) chopped at a 7.5 mm TLOC. Both diets were supplemented with 10% cracked soybeans and 1% mineral-vitamin premix. The results indicated that steers consuming the diet with the larger particle size (15 mm TLOC) exhibited greater dry matter intake (<i>P</i> = 0.05) compared to those fed the shorter cut (7.42 vs. 7.26 kg/d). Additionally, growing steers fed a high forage diet with a 15-mm TLOC silage showed greater starch digestibility (<i>P</i> = 0.03) compared to those fed the 7.5-mm TLOC diet (92.2% vs. 88.5%, respectively). Despite these differences in intake and digestibility, average daily gain and feed efficiency did not differ between treatments. These findings indicate that producers using conventional processors may optimize energy availability and feed intake by choosing a moderate chop length (15 mm) rather than cutting the forage too finely.</p>","PeriodicalId":23272,"journal":{"name":"Translational Animal Science","volume":"10 ","pages":"txag077"},"PeriodicalIF":1.9,"publicationDate":"2026-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13296994/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148346470","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 high-purity tribromoethanol (TBE) supplementation reduces enteric methane emissions in beef cattle.","authors":"Robin Malik, John-Fredy Ramirez-Agudelo, Ermias Kebreab","doi":"10.1093/tas/txag074","DOIUrl":"10.1093/tas/txag074","url":null,"abstract":"<p><p>The livestock industry contributes substantially to global greenhouse gas emissions, with enteric methane (CH₄) from ruminants representing a major source. Feed additives that suppress methanogenesis have emerged as promising strategies, provided they do not compromise animal performance. The objective of this study was to evaluate the effects of high-purity 2,2,2-tribromoethanol (TBE) on enteric gas emissions (CH₄, CO₂, H₂), dry matter intake (DMI), average daily gain (ADG), and feed efficiency (FE, ADG/DMI) in beef steers. Twenty-four Red Angus steers (initial body weight (BW) = 477 ± 27 kg) were blocked by BW and randomly assigned to one of three dietary treatments (<i>n</i> = 8 per treatment group): control (0 mg TBE/kg DM), low (15 mg TBE/kg DM), or high (30 mg TBE/kg DM). The TBE was dissolved in canola oil, mixed into a premix, and incorporated into the total mixed ration formulated to meet or exceed National Academies of Sciences, Engineering, and Medicine requirements for finishing beef cattle (ADG, 1.36-1.81 kg/d). The experiment followed a replicated 3 × 3 Latin square design with three 28-d experimental periods, during which treatments were rotated so that each animal received each treatment once. Enteric gas emissions were measured using a GreenFeed system across 8 sampling time points over a 3-day period during the final week of each experimental period. Individual DMI was recorded daily from weighed feed offered and refusals, and BW was measured weekly. Statistical analyses were performed using linear mixed-effects models with treatment and period as fixed effects and animal nested within square as random effects in a repeated measures analysis. Daily TBE supplementation reduced (<i>P</i> < 0.001) CH₄ production (g/d) by 15.6% and 32.2% for the low and high treatment groups, respectively, relative to control. Methane yield (g/kg DMI) and intensity (g/kg ADG) were also reduced (<i>P</i> < 0.001 and <i>P</i> = 0.005, respectively) by 10.7% (low) and 28.0% (high), and 12.8% (low) and 33.4% (high), respectively. DMI, ADG, and FE did not differ among treatments. These findings suggest that TBE supplementation can effectively reduce enteric CH₄ emissions in beef cattle without adversely affecting feed intake, growth performance, or feed efficiency. Tribromoethanol may therefore represent a potential CH₄ mitigation strategy warranting further evaluation regarding long-term efficacy, safety, and practical application in beef production systems.</p>","PeriodicalId":23272,"journal":{"name":"Translational Animal Science","volume":"10 ","pages":"txag074"},"PeriodicalIF":1.9,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13264421/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148253359","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":"Effects of growth hormone implants on animal growth performance, feed intake, carcass characteristics, feeding behavior, gas flux emissions, and relative profitability of finishing Angus steers.","authors":"Maya A Swenson, Juan J Vargas, John P Ritten, Ashley K Schilling-Hazlett, Edilane C Martins, Erin N Burke, Rhyse K Campion, Anna M Shadbolt, Pedro H V Carvalho, Kimberly R Stackhouse-Lawson, Nathan D DeLay, Sara E Place","doi":"10.1093/tas/txag072","DOIUrl":"10.1093/tas/txag072","url":null,"abstract":"<p><p>The current study's objective was to assess the relationship between animal growth performance, feed intake, carcass traits, feeding behavior, gas flux, and relative profitability of implanted and non-implanted finishing Angus steers. Sixty-two steers were blocked according to body weight into 2 pens and fed for 52 and 80 d, respectively. Steers within each pen were randomly assigned to a treatment: implanted with Component TE200 (IMP; Elanco Animal Health, Greenfield, IN) or not implanted (CON). Each pen was equipped with one GreenFeed automate head chamber system (AHCS) and 5 SmartFeed systems (C-Lock, Rapid City, SD) for gas flux and feed intake measurements, respectively. Data were analyzed as a randomized complete block design using JMP Pro (16.2.0), with significance declared at <i>P</i> < 0.05 and tendencies discussed between 0.05 ≤ <i>P</i> < 0.10. The IMP steers had a greater (<i>P</i> < 0.0001) final BW and ADG compared to CON steers. Dry matter intake (DMI) was greater (<i>P</i> = 0.01) for IMP steers compared to CON steers. Implanted steers had improved (<i>P</i> < 0.0001) feed conversion and feed efficiency when compared with CON steers and increased hot carcass weight (<i>P</i> < 0.0001). Ribeye area (REA) was larger (<i>P</i> = 0.01) in IMP steers compared to CON steers; however, marbling score and USDA yield grade were similar (<i>P</i> > 0.05). There was a difference (<i>P</i> = 0.04) in USDA quality grade, where CON steers had a greater proportion of more favorable quality grades (<i>ie</i> Choice + and greater) compared to IMP steers. The IMP steers tended to have larger (<i>P</i> = 0.08) session size (g of DM/visit) than CON steers. Enteric CH₄ emissions of IMP steers were greater (<i>P</i> < <i>0.05</i>) compared to CON steers. Implanted steers had greater (<i>P</i> < 0.05) oxygen consumption and hydrogen emission than CON steers. IMP had reduced (<i>P</i> < 0.05) CH₄ emissions intensity (g CH₄/kg ADG) compared to CON. Relative profitability was greater than $0.00 for each treatment, with a mean difference of $140.06/head. In summary, growth hormone implants improve productivity and efficiency of finishing steers, reducing emissions per unit of beef produced while improving profitability, especially with greater days on feed.</p>","PeriodicalId":23272,"journal":{"name":"Translational Animal Science","volume":"10 ","pages":"txag072"},"PeriodicalIF":1.9,"publicationDate":"2026-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13275294/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148296453","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":"The relationship of forage intake, residual feed intake, and greenhouse gas emissions between lactation and gestation in beef cows.","authors":"Samuel R Talley, Emma A Briggs, Bailey J Tomson, Mariana E Garcia-Ascolani, Paul A Beck, R Ryan Reuter, Andrew P Foote, Megan M Rolf, David L Lalman","doi":"10.1093/tas/txag071","DOIUrl":"10.1093/tas/txag071","url":null,"abstract":"<p><p>The objective of this research was to evaluate dry matter intake (<b>DMI</b>), residual feed intake (<b>RFI</b>), and greenhouse gas emissions between lactation and gestation in mature beef cows fed an unprocessed grass hay diet. A two-year experiment was conducted using 67 mature Angus and Angus-cross cows (<i>n</i> = 41, Year 1; <i>n</i> = 26, Year 2) which included a minimum 85-d early-mid lactation trial (<b>LACT</b>) followed by a minimum 85-d early-mid gestation trial (<b>GEST</b>) in both years. Cows were housed in drylot pens at the Oklahoma State University Range Cow Research Center. Each pen was equipped with an individual intake monitoring system (SmartFeed, C-Lock Inc., Rapid City, SD) with a stocking density of 2.7 cows per feeder in Year 1, and 2.9 cows per feeder in Year 2. Cows were offered ad libitum access to long-stem, unprocessed bermudagrass hay (≥12.6% CP and ≥ 57% TDN, LACT; ≥12.4% CP and ≥ 54% TDN, GEST) and a mineral supplement. An open-circuit, portable gas quantification system (GreenFeed, C-Lock Inc., Rapid City, SD) was placed in pens to measure carbon dioxide (<b>CO₂</b> ), methane (<b>CH₄</b> ), and oxygen (<b>O₂</b> ) flux. Cows were classified by K-means clustering into three categories of feed efficiency based on RFI of efficient (<i>n</i> = 23, LACT; <i>n</i> = 23, GEST), moderate (<i>n</i> = 27, LACT; <i>n</i> = 25, GEST), and inefficient (<i>n</i> = 17, LACT; <i>n</i> = 16, GEST) classifications. Efficient, moderate, and inefficient LACT DMI means were 13.9, 15.1, and 16.8 kg/d, and GEST DMI means for the 3 groups were 11.5, 12.6, and 15.2 kg/d respectively (<i>P</i> < 0.001). Efficient classified cows consumed 18.8% (LACT) and 27.8% (GEST) less hay than inefficient classified cows (<i>P</i> < 0.001). There were no differences for body weight (<b>BW</b>), average daily gain (<b>ADG</b>), milk yield, body condition score (<b>BCS</b>), or calf weaning weight (<b>WW</b>) between classification groups in either physiological stage (<i>P</i> ≥ 0.52). There were strong (<i>P</i> < 0.001) positive phenotypic correlations for DMI (<i>r = </i>0.82) and RFI (<i>r = </i>0.68) between LACT and GEST. There were positive phenotypic correlations (<i>P</i> < 0.001) between DMI and CO₂, CH₄, or heat production (HP) during LACT (<i>r = </i>0.70 CO₂; <i>r = </i>0.61 CH₄; <i>r = </i>0.65 HP) and GEST (<i>r = </i>0.58 CO₂; <i>r = </i>0.52 CH₄; <i>r = </i>0.58 HP). The results from this study suggest that identifying feed efficient mature cows based on RFI results in lower DMI with no difference in output metrics, and that RFI remains constant across physiological stages.</p>","PeriodicalId":23272,"journal":{"name":"Translational Animal Science","volume":"10 ","pages":"txag071"},"PeriodicalIF":1.9,"publicationDate":"2026-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13259633/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148253343","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":"Increasing dietary roughage equivalent from 7 to 12% during the final 28 days on feed does not impact growth performance but may improve ruminal health in feedlot steers.","authors":"Forest L Francis, Federico Podversich, Warren C Rusche, Zachary K Smith","doi":"10.1093/tas/txag068","DOIUrl":"10.1093/tas/txag068","url":null,"abstract":"<p><p>The objective was to determine if increasing roughage equivalent (RE) from 7% to 12% (17.5% to 20.5% dietary neutral detergent fiber on a DM basis) in the last 28 days of fattening could improve rumen health parameters and decrease the frequency of liver abscesses without compromising productive efficiency or carcass characteristics. Charolais × Angus crossbred steers [<i>n</i> = 64; <i>n</i> = 8 pens; initial shrunk body weight (SBW) = 633 kg ± 35.1 kg] were allocated to dietary treatment in a completely randomized design. All steers were fed a common 7% [dry matter (DM) basis] roughage equivalent diet (17.5% neutral detergent fiber [NDF] DM basis) where the roughage sources were based upon corn silage and hay for the 58 d prior to study initiation. The treatments involved increasing the dietary forage concentration from 7% to 12% for the final 28 days on feed, as follows: (1) No diet change (7R) and (2) 5% (DM basis) roughage equivalent addition to 7R via grass hay during the final 28 DOF to increase the dietary NDF to 20.5% DM basis (12R). Steers were finished on treatment diets for 28 d prior to harvest. No differences (<i>P</i> ≥ 0.19) were observed for any growth performance, efficiency, or carcass trait measures except for marbling scores. Marbling score differed (<i>P</i> = 0.04) between treatments with 12R steers exhibiting 5% greater marbling than 7R steers. A treatment × DOF interaction (<i>P</i> < 0.01) was observed for minutes ruminating per day. Daily minutes ruminating was increased (<i>P</i> ≤ 0.05) for 12R on d 1, 2, and 20 and tended to be increased (<i>P</i> ≤ 0.10) for 12R on d 10, 13, 24, and 25. Rumenitis score nor was liver abscess prevalence was influenced by dietary treatment. Inclusion of an additional 5% RE to cattle diets during the final 28 DOF can be a management strategy to maintain ruminal health without sacrificing growth performance or carcass quality, but does not appear to reduce incidence of liver abscessation.</p>","PeriodicalId":23272,"journal":{"name":"Translational Animal Science","volume":"10 ","pages":"txag068"},"PeriodicalIF":1.9,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13221718/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148139090","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":"Evaluation of elevated soybean meal diets with inclusion of exogenous enzymes on the effect of growth performance and digestibility.","authors":"Caitlyn M Phillips, Dalton C Humphrey, Steven L Trabue, Jon R Bergstrom, Laura L Greiner","doi":"10.1093/tas/txag070","DOIUrl":"10.1093/tas/txag070","url":null,"abstract":"<p><p>Forty-eight crossbred gilts (52.55 ± 4.12 kg) were used to evaluate the effect of high soybean meal (SBM) inclusion with dietary enzymes on growth and nutrient balance. Two sets of 24 gilts were placed in metabolism stalls and randomly assigned to one of six dietary treatments (8 pigs/trt). Experimental diets were fed in two, 12-d phases, urine and feces were collected for 72 h to assess nutrient digestibility and retention. Diets included: (i) negative control diet [NC, corn-soy (22% SBM) + synthetic AA], (ii) positive control diet, (PC, 41% SBM replacing synthetic lysine), (iii) PC + xylanase (WX), (iv) PC + multi-enzyme (VP, hemicellulase and pectinase), (v) PC + WX + VP (WXVP), and (vi) PC + 1500 FYT/kg phytase (SD). All but SD contained 600 FYT/kg phytase. Data were analyzed as repeated measures in SAS 9.4 (Statistical Analysis System, Cary, NC) with treatment, phase, and block as fixed effects and pig served as the experimental unit. Growth did not differ across treatments (<i>P</i> ≥ 0.13). Apparent total tract digestibility (ATTD) of DM and GE were unaffected (<i>P</i> ≥ 0.10), ash ATTD increased in high SBM diets (<i>P</i> < 0.01). Intake of nitrogen (N), phosphorus (P), calcium (Ca), and sulfur (S) increased with high SBM (HSBM) diets compared to NC (<i>P</i> < 0.01). Digestibility of nitrogen (N), phosphorus (P), and sulfur (S) increased in pigs fed HSBM diets (<i>P</i> < 0.01), while calcium (Ca) digestibility and retention were greatest in the PC and elevated phytase diets compared to the NC (<i>P</i> < 0.01). Absolute retention of N, P, and S was greater in higher SBM diets (<i>P</i> ≤ 0.02), though enzyme inclusion had minimal effects. Diet WX was intermediate with other HSBM treatments and NC for N retention (<i>P</i> < 0.01), WXVP was intermediate with other HSBM treatments and NC for P and S retention (<i>P</i> ≤ 0.02). Total N excretion was greater in WX, VP, and WXVP vs NC (<i>P</i> = 0.01), while enzyme supplemented diets did not differ from each other, PC and SD showed intermediate excretion levels similar to NC. Intake and digestibility of S and P increased with higher SBM, without increasing S and P excretion (<i>P</i> ≥ 0.12). Total Ca excretion was greater in WXVP vs VP (<i>P</i> = 0.03). Digestible and metabolizable energy values were similar across treatments (<i>P</i> ≥ 0.22). In conclusion, increasing SBM by 19% did not affect weight gain but increased intake and retention of N, P, Ca, and S, while dietary enzyme inclusion provided limited benefits in corn-soy diets, except for SD, which significantly improved Ca retention.</p>","PeriodicalId":23272,"journal":{"name":"Translational Animal Science","volume":"10 ","pages":"txag070"},"PeriodicalIF":1.9,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13221975/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148139068","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 arginine supplementation during lactation on piglet survivability.","authors":"Sydney E Craig, David A Clizer, Keith D Haydon, Laura L Greiner","doi":"10.1093/tas/txag064","DOIUrl":"10.1093/tas/txag064","url":null,"abstract":"<p><p>Two hundred and thirty-two PIC (PIC 1050, Genus, Hendersonville, TN) sows were used to investigate the effects of arginine supplementation on lactating sow performance and piglet mortality. Sows were allotted by randomized complete block design to one of two dietary treatments formulated to different standard ileal digestible (SID) arginine levels upon entering the farrowing. The control (CON) diet contained 0.95% SID arginine, while the experimental diet contained 1.12% SID arginine (ARG). Diets were formulated to meet or exceed all other NRC (2012) nutrient recommendations. Sow body weight (BW), backfat (BF), and body condition score (BCS) were recorded upon entering the farrowing room and upon weaning. Piglet litter weights were recorded after cross-fostering and at 20 days of age, to assess litter growth rate. Data were analyzed using generalized linear mixed models, with treatment as a fixed effect and group as a random effect. Post-foster litter size and litter weight were added as covariates. Models were fit using R (v4.4.1), and results were considered significant at <i>P</i> ≤ 0.05 and a tendency at 0.50 < <i>P</i> ≤ 0.10. Sow and litter were considered the experimental unit. Sow lactation length and BW at wean were not different between treatments (<i>P</i> = 0.76 and 0.63, respectively). There was no difference in ADFI with ARG consuming 7.28 ± 0.095 kg/d and the CON consuming 7.48 ± 0.095 kg/d (<i>P</i> = 0.12). The supplementation of Arg did not change BCS at weaning (2.72, 2.76 (scale of 1-5); <i>P</i> = 0.57). Upon entering the farrowing room, sow BF was 10.13 and 10.00 mm for the CON and Arg diets, respectively. The change in BF after weaning did not differ between dietary treatments (<i>P</i> = 0.53). The number of pigs weaned per sow was not different between sows in both treatments (12.1 ± 0.119 piglets, <i>P</i> = 0.79). Starting litter weight was 20.07 ± 0.357 kg for CON and 21.66 ± 0.357 kg for ARG. Litter wean weight did not differ between treatments (<i>P</i> = 0.69). Piglet average daily gain (ADG) differed significantly between treatments, with a mean of 0.25 ± 0.004 kg/d for CON and 0.24 ± 0.004 kg/d for ARG (<i>P</i> = 0.02). Post-foster mortality was not affected by Arg supplementation, with CON post-foster mortality at 6.37% and ARG at 5.96% (<i>P</i> = 0.43). This resulted in total livability of 93.3% (CON) and 94.0% (ARG), which did not differ (<i>P</i> = 0.43). In summary, Arg supplementation during lactation did not significantly influence sow performance or overall piglet growth and livability.</p>","PeriodicalId":23272,"journal":{"name":"Translational Animal Science","volume":"10 ","pages":"txag064"},"PeriodicalIF":1.9,"publicationDate":"2026-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13353226/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148424441","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":"Effects of dietary soy sauce residue on growth performance, organ development, plasma biochemical parameters, and meat quality of Pekin ducks.","authors":"Zhanyue Wu, Yanhong Guo, Qimeng Wang, Junting Cao, Sen Wu, Yongbao Wu, Zhiguo Wen","doi":"10.1093/tas/txag012","DOIUrl":"10.1093/tas/txag012","url":null,"abstract":"<p><p>Soy sauce residue (SSR), a by-product of soy sauce production industry that is rich in protein and amino acids, was investigated for its effects on the growth and organ development, plasma biochemical parameters, meat quality, and breast muscle metabolites of Pekin ducks. A total of 280 healthy male 1-day-old ducks were randomly divided into 5 groups (7 replicates, 8 birds/replicate). The ducks were fed a corn-soybean meal supplemented with varying levels of SSR (0%, 2%, 4%, 6%, and 8%). The study found that the addition of 4% SSR had no significant effect on growth performance, organ development, and meat quality of Pekin ducks (<i>P ></i> 0.05). In terms of plasma biochemistry parameters, the contents of ALT, AST, TP, ALB, DBIL, CK, CHO, and HDLC in the 6% and 8% SSR groups were significantly decreased (<i>P < </i>0.05). CK showed a liner decrease with the increasing SSR level (<i>P < </i>0.05). Additionally, the contents of proline, histidine, aspartic and acetic acid in the breast muscle of the 8% SSR group were significantly decreased (<i>P < </i>0.05). Analysis of breast muscle metabolites revealed that there was a total of 71 differential metabolites between the control and 8% SSR groups, which were associated with anti-inflammatory and antioxidant functions. In summary, SSR may serve as a novel feed ingredient in meat duck production, and an inclusion level of 4% appears to be safer in this experiment.</p>","PeriodicalId":23272,"journal":{"name":"Translational Animal Science","volume":"10 ","pages":"txag012"},"PeriodicalIF":1.9,"publicationDate":"2026-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13193594/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148017547","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}