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Re-Evaluating the Population History of Malagasy Native Cattle Reveals Shared African Taurine-Related Ancestry but Distinct Indicine Admixture Histories Relative to East African Cattle. 重新评估马达加斯加本土牛的种群历史揭示了与非洲牛磺酸相关的共同祖先,但与东非牛不同的指示混合历史。
IF 1.6 3区 农林科学
Animal Science Journal Pub Date : 2026-01-01 DOI: 10.1111/asj.70232
Jiaqi Wu, Hideki Endo, Felix Rakotondraparany, Fanomezana Mihaja Ratsoavina, Kazumi Imai, Yoshio Yamamoto, Takeshi Shimogiri, Hideyuki Mannen, Takahiro Yonezawa
{"title":"Re-Evaluating the Population History of Malagasy Native Cattle Reveals Shared African Taurine-Related Ancestry but Distinct Indicine Admixture Histories Relative to East African Cattle.","authors":"Jiaqi Wu, Hideki Endo, Felix Rakotondraparany, Fanomezana Mihaja Ratsoavina, Kazumi Imai, Yoshio Yamamoto, Takeshi Shimogiri, Hideyuki Mannen, Takahiro Yonezawa","doi":"10.1111/asj.70232","DOIUrl":"10.1111/asj.70232","url":null,"abstract":"<p><p>East African cattle, including Malagasy native cattle (ZMA), are generally thought to have been shaped by admixture between African taurine and Asian indicine lineages, but the detailed position and formation history of ZMA within this broader diversity remain unclear. We analyzed worldwide SNP data from 145 cattle populations comprising 4093 individuals using principal component analysis (PCA), pairwise weighted F<sub>ST</sub>, outgroup-f3, f4, qpWave, and qpGraph. ZMA fell along the African taurine-Asian cattle axis in PCA. Although several West African taurine populations showed the highest absolute outgroup-f3 values with ZMA, outgroup-f3 profile comparisons showed that ZMA was most closely matched by East African cattle, especially East African Shorthorn Zebu, Boran, and Sheko, consistent with a shared African taurine ancestry background. However, f4, qpWave, and qpGraph showed that these relationships are not adequately explained by a simple clade-like relationship or a single shared admixture event, but instead suggest multiple waves of gene flow from different Asian indicine populations. Our results refine African-wide models of heterogeneous indicine ancestry by showing that, in the East African-Malagasy context, ZMA are best understood as part of a shared African taurine-related ancestry background overlaid by later lineage-specific and internally heterogeneous indicine-related admixture histories.</p>","PeriodicalId":7890,"journal":{"name":"Animal Science Journal","volume":"97 1","pages":"e70232"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13456932/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Maternal Liver Retinol Stores Do Not Ensure Adequate Calf Vitamin A Under Restricted Late-Gestation Vitamin A Intake. 在限制妊娠后期维生素A摄入量的情况下,母体肝脏视黄醇储存不能保证足够的小牛维生素A。
IF 1.6 3区 农林科学
Animal Science Journal Pub Date : 2026-01-01 DOI: 10.1111/asj.70175
Hannah F Speer, Harvey C Freetly, Mary E Drewnoski
{"title":"Maternal Liver Retinol Stores Do Not Ensure Adequate Calf Vitamin A Under Restricted Late-Gestation Vitamin A Intake.","authors":"Hannah F Speer, Harvey C Freetly, Mary E Drewnoski","doi":"10.1111/asj.70175","DOIUrl":"10.1111/asj.70175","url":null,"abstract":"<p><p>Vitamin A is critical for immune function and epithelial integrity, yet the relationship between maternal and calf vitamin A status is not well defined. This study evaluated cow-calf vitamin A status under restricted maternal vitamin A intake during late gestation and early lactation. Beef cows (n = 114) were individually fed 14,000 or 29,000 IU/d of vitamin A (approximately 30% or 75% of recommendations) from 128 days pre-calving to 32 days post-calving. All cows began with high liver retinol concentrations (mean ± SD: 786 ± 252 μg/g DM) from prior grazing. Cow liver and plasma, and calf liver and plasma, were sampled 32 ± 7 days postpartum. Cow liver retinol declined to 483 ± 182 μg/g DM by 32 days postpartum. Calf liver retinol averaged 51 ± 27 μg/g DM and plasma retinol 190 ± 47 ng/mL, both below adequacy thresholds. Calf plasma retinol increased with calf liver retinol (p < 0.01; R<sup>2</sup> = 0.22). Maternal post-calving liver retinol explained 9.5% of the variation in calf liver retinol. These results indicate that adequate maternal liver vitamin A stores at calving do not ensure adequate calf vitamin A status when maternal dietary vitamin A is restricted.</p>","PeriodicalId":7890,"journal":{"name":"Animal Science Journal","volume":"97 1","pages":"e70175"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13069232/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147653685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of Osmotic and Hydrostatic Pressures on Milk and Antimicrobial Substance Production in Lactating Goats. 渗透压和静水压力对泌乳山羊产奶量和抗菌物质产量的影响。
IF 1.6 3区 农林科学
Animal Science Journal Pub Date : 2026-01-01 DOI: 10.1111/asj.70199
Donghyeon Kang, Jirapat Jaisue, Takahiro Nii, Ken Kobayashi, Naoki Isobe
{"title":"Effects of Osmotic and Hydrostatic Pressures on Milk and Antimicrobial Substance Production in Lactating Goats.","authors":"Donghyeon Kang, Jirapat Jaisue, Takahiro Nii, Ken Kobayashi, Naoki Isobe","doi":"10.1111/asj.70199","DOIUrl":"10.1111/asj.70199","url":null,"abstract":"<p><p>Osmotic and hydrostatic (intramammary pressure) pressures within the mammary gland may stimulate mammary epithelial cells and leukocytes, which alter milk production and immune functions. We aimed to clarify the effects of different volumes and concentrations of NaCl solution on milk and antimicrobial substance production in lactating goats. Intramammary infusions of different NaCl solution concentrations (0.9% and 2.7%) at different volumes (50 mL or until full in the udder) were carried out; milk samples were collected for 5 days after infusion. The infusions resulted in significant daily effects on milk yield, somatic cell count (SCC), sodium ion (Na<sup>+</sup>) and potassium ion (K<sup>+</sup>), milk amyloid A (MAA), S100A7, and lactoferrin (LF) concentrations. Sodium and potassium ions, SCC, and MAA levels differed depending on the infused volume, whereas those of S100A7 and LF differed according to the NaCl concentration. These results suggest that short-term increases in hydrostatic and osmotic pressures modulate milk production and stimulate antimicrobial factor production in the mammary glands. Hence, they highlight a potential approach toward enhancing innate immune function in the udder.</p>","PeriodicalId":7890,"journal":{"name":"Animal Science Journal","volume":"97 1","pages":"e70199"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13251349/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148209867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Maize Silage Associated With Hay From Xerophytic Plants in Lamb Feeding: Intake, Digestibility, and Economic Feasibility. 玉米青贮与旱生植物干草在羔羊饲粮中的采食量、消化率和经济可行性
IF 1.6 3区 农林科学
Animal Science Journal Pub Date : 2026-01-01 DOI: 10.1111/asj.70181
Rosilda Alves Magalhães Menezes, Mario Adriano Ávila Queiroz, Fleming Sena Campos, Juliana Caroline Santos Santana, Péricles Brito Batista, Rafael Torres de Souza Rodrigues, Higor Fábio Carvalho Bezerra, Severino Gonzaga Neto, Timóteo Silva Dos Santos Nunes, Willames Luiz do Nascimento, Lucas Lopes de Macedo, João Virgínio Emerenciano Neto
{"title":"Maize Silage Associated With Hay From Xerophytic Plants in Lamb Feeding: Intake, Digestibility, and Economic Feasibility.","authors":"Rosilda Alves Magalhães Menezes, Mario Adriano Ávila Queiroz, Fleming Sena Campos, Juliana Caroline Santos Santana, Péricles Brito Batista, Rafael Torres de Souza Rodrigues, Higor Fábio Carvalho Bezerra, Severino Gonzaga Neto, Timóteo Silva Dos Santos Nunes, Willames Luiz do Nascimento, Lucas Lopes de Macedo, João Virgínio Emerenciano Neto","doi":"10.1111/asj.70181","DOIUrl":"10.1111/asj.70181","url":null,"abstract":"<p><p>The aim of this study was to evaluate the effect of the partial inclusion of 25% hay from xerophytic plants in maize silage in feedlot lamb in the semiarid region. Non-defined breed male lambs were used in a completely randomized design, with five experimental units per treatment. The treatments consisted of four diets: maize silage (SM), maize silage with gliricidia hay (SMG), maize silage with pornunça hay (SMP), and maize silage with leucaena hay (SML). The SM diet showed higher in vivo dry matter digestibility (70.35%), whereas SM and SMG recorded the highest NDF digestibility values (60.31% and 57.10%). Average daily gain was higher in the SM and SMG diets (180 g day<sup>-1</sup>), resulting in greater slaughter weights (31.39 and 29.74 kg). Carcass yield was not affected by the inclusion of xerophytic plant hays. Gliricidia maintained carcass performance similar to SM, whereas SMP and SML resulted in lower carcass weights and commercial cuts. Meat color improved with the inclusion of legumes (SMG and SML). The economic analysis indicated that SM was the most profitable diet, although all diets showed positive profit. Gliricidia is a viable alternative for semiarid production systems, contributing to feed diversification and reducing dependence on maize silage.</p>","PeriodicalId":7890,"journal":{"name":"Animal Science Journal","volume":"97 1","pages":"e70181"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13165692/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147873045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction to "Analysis of miRNA Expression in Bovine Endometrium During the Estrous Cycle". 修正“发情周期中牛子宫内膜miRNA表达分析”。
IF 1.6 3区 农林科学
Animal Science Journal Pub Date : 2026-01-01 DOI: 10.1111/asj.70246
{"title":"Correction to \"Analysis of miRNA Expression in Bovine Endometrium During the Estrous Cycle\".","authors":"","doi":"10.1111/asj.70246","DOIUrl":"10.1111/asj.70246","url":null,"abstract":"","PeriodicalId":7890,"journal":{"name":"Animal Science Journal","volume":"97 1","pages":"e70246"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13558083/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148917888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction to "Relationship Between Thermal Environment and Welfare Indicators of Laying Hens: A Canonical Correlation Approach". 更正“热环境与蛋鸡福利指标的关系:典型相关方法”。
IF 1.6 3区 农林科学
Animal Science Journal Pub Date : 2026-01-01 DOI: 10.1111/asj.70180
{"title":"Correction to \"Relationship Between Thermal Environment and Welfare Indicators of Laying Hens: A Canonical Correlation Approach\".","authors":"","doi":"10.1111/asj.70180","DOIUrl":"10.1111/asj.70180","url":null,"abstract":"","PeriodicalId":7890,"journal":{"name":"Animal Science Journal","volume":"97 1","pages":"e70180"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13484041/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147621605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Compositional Properties of Soup Stock Prepared From Femur Bones of Yeso Sika Deer (Cervus nippon yesoensis). Yeso梅花鹿大腿骨汤料的组成特性研究。
IF 1.6 3区 农林科学
Animal Science Journal Pub Date : 2026-01-01 DOI: 10.1111/asj.70253
Toru Kikuchi, Ayaka Kobayashi, Kenichiro Shimada, Hiroshi Ishii, Kyu-Ho Han, Michihiro Fukushima
{"title":"Compositional Properties of Soup Stock Prepared From Femur Bones of Yeso Sika Deer (Cervus nippon yesoensis).","authors":"Toru Kikuchi, Ayaka Kobayashi, Kenichiro Shimada, Hiroshi Ishii, Kyu-Ho Han, Michihiro Fukushima","doi":"10.1111/asj.70253","DOIUrl":"https://doi.org/10.1111/asj.70253","url":null,"abstract":"<p><p>Soup stock was prepared solely from Yeso sika deer (Cervus nippon yesoensis) femurs by heating at 80°C-90°C under normal pressure for 6-48 h. Total nitrogen generally increased with extraction time, with no significant differences among the 18- to 48 h conditions; within this range, the observed mean was highest at 36 h, which was therefore selected as the representative condition for compositional analysis. The 36 h stock contained 99.6 g/100 g moisture and 0.4 g/100 g crude protein and had a pH of 8.6. Fifteen free amino acids were detected (total, 1.45 mg/100 mL), with glutamic acid (Glu) the most abundant (0.268 mg/100 mL). Free hydroxyproline and inosine 5'-monophosphate (IMP) concentrations were 0.011 and 0.188 mg/100 mL, respectively, and free peptide equivalents were 9.00 mg of bovine serum albumin equivalent/100 mL. Total free amino acids, Glu, and IMP were lower than in previously reported bone soups, but differences in raw materials and preparation conditions preclude direct comparison. These findings provide basic information for evaluating Yeso sika deer bone as a food material.</p>","PeriodicalId":7890,"journal":{"name":"Animal Science Journal","volume":"97 1","pages":"e70253"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149206473","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}
引用次数: 0
Lipidomic and Metabolomic Profiling of Breast Muscle Between Squabs and Adult White King Pigeons. 乳鸽和成年白王鸽胸肌的脂质组学和代谢组学分析。
IF 1.6 3区 农林科学
Animal Science Journal Pub Date : 2026-01-01 DOI: 10.1111/asj.70242
Wanqing Li, Yi Zhang, Yiman Wang, Jing Chen, Dongzhi Miao, Haodong Zhang, Chao Liu, Kui Zuo, Ying Wang, Haiming Yang, Zhiyue Wang
{"title":"Lipidomic and Metabolomic Profiling of Breast Muscle Between Squabs and Adult White King Pigeons.","authors":"Wanqing Li, Yi Zhang, Yiman Wang, Jing Chen, Dongzhi Miao, Haodong Zhang, Chao Liu, Kui Zuo, Ying Wang, Haiming Yang, Zhiyue Wang","doi":"10.1111/asj.70242","DOIUrl":"10.1111/asj.70242","url":null,"abstract":"<p><p>This study systematically investigated age-related variations in meat quality traits, lipidomic profiles, and metabolomic profiles of breast muscle from White King pigeons, comparing 28-day-old squabs (D28) and 12-month-old adult pigeons (M12). Six biological replicates were used per group (n = 6). Physicochemical analyses and ultra-high performance liquid chromatography-tandem mass spectrometry were employed to characterize these differences. Results showed significant disparities in meat quality between the two age groups: D28 pigeons exhibited significantly higher lightness (L*), redness (a*), and yellowness (b*) values at 24-h postslaughter, along with higher water-loss rate alongside lower shear force (p < 0.05), reflecting more tender muscle texture despite weaker water retention capacity. In contrast, M12 pigeons had higher springiness but lower cohesiveness and gumminess (p < 0.05). Lipidomic analysis identified 553 lipid molecules, with 174 differential lipids categorized into six classes. D28 pigeons had significantly higher levels of glycerolipids (GLs) and fatty acyls (FAs), while M12 pigeons showed elevated saccharolipids (SLs) and prenol lipids (PRs). Metabolomic profiling detected 19,019 metabolites, among which 984 were differentially abundant (screening criteria: variable importance in projection (VIP) ≥ 1, fold change (FC) > 1.2 or FC < 0.83, FDR-adjusted p < 0.05), predominantly enriched in amino acid metabolism. Correlation analysis revealed that acylcarnitines (AcCa) and phosphatidylinositol (PI) were positively correlated with water-loss rate and L24 values (r > 0.8, p < 0.05), whereas lysophosphatidylethanolamines (LPEs), L-threonic acid, and β-glycerophosphoric acid showed positive associations with shear force and cooking loss (r > 0.8, p < 0.05). These findings reveal statistical associations between lipid/metabolite profiles and age-driven differences in pigeon breast meat quality, and identify potential candidate lipid and metabolite biomarkers correlated with pigeon meat quality phenotypes. These results identify candidate biomarkers associated with breast meat quality in male White King pigeons at two ages and offer preliminary exploratory omics data for subsequent pigeon meat research, rather than universal guidance for breeding and production.</p>","PeriodicalId":7890,"journal":{"name":"Animal Science Journal","volume":"97 1","pages":"e70242"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13560605/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148918052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nondestructive Estimation of Textural Properties and Water-Holding Capacity in Papain- or Ficin-Tenderized Beef Using Impedance Measurements. 用阻抗测量无损估计木瓜蛋白酶或无花果素嫩化牛肉的结构特性和保水能力。
IF 1.6 3区 农林科学
Animal Science Journal Pub Date : 2026-01-01 DOI: 10.1111/asj.70214
Miku Matsumoto, Takayuki Muramoto
{"title":"Nondestructive Estimation of Textural Properties and Water-Holding Capacity in Papain- or Ficin-Tenderized Beef Using Impedance Measurements.","authors":"Miku Matsumoto, Takayuki Muramoto","doi":"10.1111/asj.70214","DOIUrl":"10.1111/asj.70214","url":null,"abstract":"<p><p>Meat hardness is a key textural attribute perceived during consumption. Hardness is influenced by myofibrillar and collagen proteins. Papain from papaya has been reported to disrupt myofibrillar and collagen proteins in a balanced manner, whereas ficin from figs preferentially disrupts myofibrillar proteins to tenderize meat. Here, beef was immersed in papain or ficin solutions, and texture and impedance were measured using touch-type electrodes to examine the relationship between textural properties and impedance. Maximum load was significantly lower in the papain- and ficin-treated groups than in the control group (p < 0.01). Total loss was positively correlated with impedance in the control and papain groups (p < 0.01) and in the control and ficin groups (p < 0.05). Maximum load was negatively correlated with impedance in the control and papain groups (p < 0.01) and in the control and ficin groups (p < 0.05). These findings indicate that impedance measurements can nondestructively estimate water-holding capacity and hardness in beef tenderized with papain or ficin solutions.</p>","PeriodicalId":7890,"journal":{"name":"Animal Science Journal","volume":"97 1","pages":"e70214"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13331962/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148381489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diversity of the Major Histocompatibility Complex Region Among Seven Founders of the Crested Ibis Nipponia nippon in Japan. 日本朱鹮7个始祖主要组织相容性复合体区的多样性。
IF 1.6 3区 农林科学
Animal Science Journal Pub Date : 2026-01-01 DOI: 10.1111/asj.70220
Yukio Taniguchi, Takahisa Yamada, Toshie Sugiyama, Yoshinori Kaneko, Hiroaki Iwaisaki
{"title":"Diversity of the Major Histocompatibility Complex Region Among Seven Founders of the Crested Ibis Nipponia nippon in Japan.","authors":"Yukio Taniguchi, Takahisa Yamada, Toshie Sugiyama, Yoshinori Kaneko, Hiroaki Iwaisaki","doi":"10.1111/asj.70220","DOIUrl":"10.1111/asj.70220","url":null,"abstract":"<p><p>The Crested Ibis Nipponia nippon is a critically threatened avian species. The current Japanese population originates from only seven founders introduced from China. The major histocompatibility complex (MHC) is a highly polymorphic genomic region that plays a central role in the immune system. We previously reported that only three MHC class II haplotypes (HP1-3) with one to three copies of MHC-IIA/IIB gene pairs (one copy of DAA/DAB locus and 0-2 copies of DBA/DBB loci) were detected among the five older founders, and four MHC-IIB exon 2 alleles (Type I-IV) were identified. In this study, MHC class II haplotypes in two novel founders, and MHC class IA genotypes at UAA locus in the seven founders were investigated. Of the two novel founders, while one possessed known HP1 and HP2, another possessed known HP1 and a novel haplotype (HP4) with the combination of type II and type I in DAB and DBB exon 2 s, respectively. Analysis of the linkage between MHC class II haplotypes and UAA alleles revealed five distinct MHC haplotypes against seven founders. These results strongly suggested that the founders might be considerably closely related, and the novel HP4 was produced by recombination between HP1 and HP2.</p>","PeriodicalId":7890,"journal":{"name":"Animal Science Journal","volume":"97 1","pages":"e70220"},"PeriodicalIF":1.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13355111/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148417950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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