Advances in Cattle, Sheep, and Goats Molecular Genetics and Breeding

A special issue of Genes (ISSN 2073-4425). This special issue belongs to the section "Animal Genetics and Genomics".

Deadline for manuscript submissions: closed (15 October 2024) | Viewed by 7879

Special Issue Editor

Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education, Yangzhou University, Yangzhou 225000, China
Interests: livestock science; functional genomics; epigenetic regulation; genetic resources; agri-product safety
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Special Issue Information

Dear Colleagues,

As global demands for animal products, such as meat, milk, and wool, continue to rise, the sustainable intensification of livestock production has become a critical challenge. This issue aims to address this challenge by highlighting the latest advancements in molecular genetics that can lead to improved breeding outcomes, including enhanced productivity, disease resistance, environmental adaptability, and animal welfare. We invite submissions of original research, review, short communication and case study. Contributions are encouraged from a broad range of topics, including but not limited to genomic selection, gene editing, gene function, genetic diversity, epigenetic modification, genotype-environment interactions, genetic resources, and the development of breeding programs that leverage cutting-edge molecular tools. This Special Issue aims to provide insights into the current state in cattle, sheep, and goats, offering valuable information for researchers and breeders involved in livestock production and genetic improvement programs.

Dr. Xiukai Cao
Guest Editor

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Keywords

  • livestock breeding
  • molecular genetics
  • genetic resources
  • genetic diversity
  • functional genome
  • epigenetic regulation
  • breeding program and software

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Published Papers (8 papers)

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Research

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13 pages, 2219 KiB  
Article
CRABP1 Enhances the Proliferation of the Dermal Papilla Cells of Hu Sheep through the Wnt/β-catenin Pathway
by Zahid Hussain, Tingyan Hu, Yuan Gou, Mingliang He, Xiaoyang Lv, Shanhe Wang and Wei Sun
Genes 2024, 15(10), 1291; https://doi.org/10.3390/genes15101291 - 30 Sep 2024
Viewed by 533
Abstract
Background: The homologous proteins identified as cellular retinoic acid-binding proteins I and II (CRABP-I and CRABP-II) belong to a subset of intracellular proteins characterized by their robust affinity for retinoic acid, which plays an indispensable role in the development of hair [...] Read more.
Background: The homologous proteins identified as cellular retinoic acid-binding proteins I and II (CRABP-I and CRABP-II) belong to a subset of intracellular proteins characterized by their robust affinity for retinoic acid, which plays an indispensable role in the development of hair follicle, including differentiation, proliferation, and apoptosis in keratinocytes. Previous research on Hu sheep hair follicles revealed the specific expression CRABP1 in dermal papilla cells (DPCs), suggesting that CRABP1 has a potential role in regulating the DPC population. Therefore, the main purpose of this study is to expose the performance of the CRABP1 genes in the development and proliferation of DPCs. Methods: Initially, overexpression and inhibition of CRABP1 in the DPCs were conducted through overexpression vector and siRNA. CCK-8, EDU, and RT-PCR cell cycle assays and immunostaining were performed to evaluate the proliferation and cell cycle of dermal papilla cells (DPCs). Although, the influence of CRABP1 upon β-catenin in dermal papilla cells (DPCs) was found using immunofluorescence labeling. Finally, RT-PCR was conducted to assess the impact of CRABP1 on the expression levels of CTNNB1, TCF4, and LEF1 in DPCs involved in the Wnt/β-catenin signaling pathway. Results: The results showed that CRABP1 overexpression promotes the growth rates of DPCs and significantly enhances the proportion of S-phase cells compared with the control group (p < 0.05). The results were the opposite when CRABP1 was a knockdown. In contrast, there was a significant decline in the mRNA expression levels of CTNNβ1, LEF1 (p < 0.05), and TCF4 (p < 0.01) by CRABP1 knockdown. Conclusions: This study found that CRABP1 influences the expression of important genes within the Wnt/β-catenin signaling pathway and promotes DPC proliferation. This investigation provides a theoretical framework to explain the mechanisms that control hair follicle morphogenesis and development. Full article
(This article belongs to the Special Issue Advances in Cattle, Sheep, and Goats Molecular Genetics and Breeding)
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23 pages, 4068 KiB  
Article
Analyzing Runs of Homozygosity Reveals Patterns of Selection in German Brown Cattle
by Anna Wirth, Jürgen Duda, Reiner Emmerling, Kay-Uwe Götz, Franz Birkenmaier and Ottmar Distl
Genes 2024, 15(8), 1051; https://doi.org/10.3390/genes15081051 - 9 Aug 2024
Viewed by 868
Abstract
An increasing trend in ancestral and classical inbreeding coefficients as well as inbreeding depression for longevity were found in the German Brown population. In addition, the proportion of US Brown Swiss genes is steadily increasing in German Browns. Therefore, the aim of the [...] Read more.
An increasing trend in ancestral and classical inbreeding coefficients as well as inbreeding depression for longevity were found in the German Brown population. In addition, the proportion of US Brown Swiss genes is steadily increasing in German Browns. Therefore, the aim of the present study was to analyze the presence and genomic localization of runs of homozygosity (ROH) in order to evaluate their associations with the proportion of US Brown Swiss genes and survival rates of cows to higher lactations. Genotype data were sampled in 2364 German Browns from 258 herds. The final data set included 49,693 autosomal SNPs. We identified on average 35.996 ± 7.498 ROH per individual with a mean length of 8.323 ± 1.181 Mb. The genomic inbreeding coefficient FROH was 0.122 ± 0.032 and it decreased to 0.074, 0.031 and 0.006, when genomic homozygous segments > 8 Mb (FROH>8), >16 Mb (FROH>16) and >32 Mb (FROH>32) were considered. New inbreeding showed the highest correlation with FROH>32, whereas ancestral inbreeding coefficients had the lowest correlations with FROH>32. The correlation between the classical inbreeding coefficient and FROH was 0.572. We found significantly lower FROH, FROH>4, FROH>8 and FIS for US Brown Swiss proportions <60% compared to >80%. Cows surviving to the 2nd, 4th, 6th, 8th, and 10th lactation had lower genomic inbreeding for FROH and up to FROH>32, which was due to a lower number of ROH and a shorter average length of ROH. The strongest ROH island and consensus ROH shared by 50% of the animals was found on BTA 6 at 85–88 Mb. The genes located in this genomic region were associated with longevity (NPFFR2 and ADAMTS3), udder health and morphology (SLC4A4, NPFFR2, GC and RASSF6), milk production, milk protein percentage, coagulation properties of milk and milking speed (CSN3). On BTA 2, a ROH island was detected only in animals with <60% US Brown Swiss genes. Genes within this region are predominantly important for dual-purpose cattle breeds including Original Browns. For cows reaching more than 9 lactations, an exclusive ROH island was identified on BTA 7 with genes assumed to be associated with longevity. The analysis indicated that genomic homozygous regions important for Original Browns are still present and also ROH containing genes affecting longevity may have been identified. The breeding of German Browns should prevent any further increase in genomic inbreeding and run a breeding program with balanced weights on production, robustness and longevity. Full article
(This article belongs to the Special Issue Advances in Cattle, Sheep, and Goats Molecular Genetics and Breeding)
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14 pages, 4279 KiB  
Article
A Comprehensive Systematic Review Coupled with an Interacting Network Analysis Identified Candidate Genes and Biological Pathways Related to Bovine Temperament
by Gilberto Ruiz-De-La-Cruz, Thomas H. Welsh, Jr., Ronald D. Randel and Ana María Sifuentes-Rincón
Genes 2024, 15(8), 981; https://doi.org/10.3390/genes15080981 - 25 Jul 2024
Viewed by 863
Abstract
Comprehension of the genetic basis of temperament has been improved by recent advances in the identification of genes and genetic variants. However, due to the complexity of the temperament traits, the elucidation of the genetic architecture of temperament is incomplete. A systematic review [...] Read more.
Comprehension of the genetic basis of temperament has been improved by recent advances in the identification of genes and genetic variants. However, due to the complexity of the temperament traits, the elucidation of the genetic architecture of temperament is incomplete. A systematic review was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement to analyze candidate genes related to bovine temperament, using bovine as the population, SNPs and genes as the exposure, and temperament test as the outcome, as principal search terms for population, exposure, and outcome (PEO) categories to define the scope of the search. The search results allowed the selection of 36 articles after removing duplicates and filtering by relevance. One hundred-two candidate genes associated with temperament traits were identified. The genes were further analyzed to construct an interaction network using the STRING database, resulting in 113 nodes and 346 interactions and the identification of 31 new candidate genes for temperament. Notably, the main genes identified were SST and members of the Kelch family. The candidate genes displayed interactions with pathways associated with different functions such as AMPA receptors, hormones, neuronal maintenance, protein signaling, neuronal regulation, serotonin synthesis, splicing, and ubiquitination activities. These new findings demonstrate the complexity of interconnected biological processes that regulate behavior and stress response in mammals. This insight now enables our targeted analysis of these newly identified temperament candidate genes in bovines. Full article
(This article belongs to the Special Issue Advances in Cattle, Sheep, and Goats Molecular Genetics and Breeding)
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16 pages, 5650 KiB  
Article
Illuminating Genetic Diversity and Selection Signatures in Matou Goats through Whole-Genome Sequencing Analysis
by Ruiyao HuangFu, Haobang Li, Yang Luo, Fang He, Cheng Huan, Zulfiqar Ahmed, Baizhong Zhang, Chuzhao Lei and Kangle Yi
Genes 2024, 15(7), 909; https://doi.org/10.3390/genes15070909 - 12 Jul 2024
Cited by 1 | Viewed by 771
Abstract
(1) Background: Matou goats, native to Hunan and Hubei provinces in China, are renowned for their exceptional meat and skin quality. However, a comprehensive whole-genome-based exploration of the genetic architecture of this breed is scant in the literature. (2) Methods: To address this [...] Read more.
(1) Background: Matou goats, native to Hunan and Hubei provinces in China, are renowned for their exceptional meat and skin quality. However, a comprehensive whole-genome-based exploration of the genetic architecture of this breed is scant in the literature. (2) Methods: To address this substantial gap, we used whole-genome sequences of 20 Matou goats and compared them with published genomic data of 133 goats of different breeds across China. This comprehensive investigation sought to assess genetic diversity, population structure, and the presence of genomic selection signals. (3) Results: The whole genome of Matou goat populations yielded a substantial catalog of over 19 million single nucleotide polymorphisms (SNPs), primarily distributed within intergenic and intron regions. The phylogenetic tree analysis revealed distinct clades corresponding to each goat population within the dataset. Notably, this analysis positioned Matou goats in a closer genetic affinity with Guizhou White goats, compared to other recognized goat breeds. This observation was corroborated by principal component analysis (PCA) and admixture analysis. Remarkably, Matou goats exhibited diminished genetic diversity and a notable degree of inbreeding, signifying a reduced effective population size. Moreover, the study employed five selective sweep detection methods (including PI, CLR, PI-Ratio, Fst, and XP-EHH) to screen top signal genes associated with critical biological functions, encompassing cardiomyocytes, immunity, coat color, and meat quality. (4) Conclusions: In conclusion, this study significantly advances our understanding of the current genetic landscape and evolutionary dynamics of Matou goats. These findings underscore the importance of concerted efforts in resource conservation and genetic enhancement for this invaluable breed. Full article
(This article belongs to the Special Issue Advances in Cattle, Sheep, and Goats Molecular Genetics and Breeding)
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14 pages, 1740 KiB  
Article
Genomic Regions Associated with Resistance to Gastrointestinal Parasites in Australian Merino Sheep
by Brenda Vera, Elly A. Navajas, Pablo Peraza, Beatriz Carracelas, Elize Van Lier and Gabriel Ciappesoni
Genes 2024, 15(7), 846; https://doi.org/10.3390/genes15070846 - 27 Jun 2024
Viewed by 1317
Abstract
The objective of this study was to identify genomic regions and genes associated with resistance to gastrointestinal nematodes in Australian Merino sheep in Uruguay, using the single-step GWAS methodology (ssGWAS), which is based on genomic estimated breeding values (GEBVs) obtained from a combination [...] Read more.
The objective of this study was to identify genomic regions and genes associated with resistance to gastrointestinal nematodes in Australian Merino sheep in Uruguay, using the single-step GWAS methodology (ssGWAS), which is based on genomic estimated breeding values (GEBVs) obtained from a combination of pedigree, genomic, and phenotypic data. This methodology converts GEBVs into SNP effects. The analysis included 26,638 animals with fecal egg count (FEC) records obtained in two independent parasitic cycles (FEC1 and FEC2) and 1700 50K SNP genotypes. The comparison of genomic regions was based on genetic variances (gVar(%)) explained by non-overlapping regions of 20 SNPs. For FEC1 and FEC2, 18 and 22 genomic windows exceeded the significance threshold (gVar(%) ≥ 0.22%), respectively. The genomic regions with strong associations with FEC1 were located on chromosomes OAR 2, 6, 11, 21, and 25, and for FEC2 on OAR 5, 6, and 11. The proportion of genetic variance attributed to the top windows was 0.83% and 1.9% for FEC1 and FEC2, respectively. The 33 candidate genes shared between the two traits were subjected to enrichment analysis, revealing a marked enrichment in biological processes related to immune system functions. These results contribute to the understanding of the genetics underlying gastrointestinal parasite resistance and its implications for other productive and welfare traits in animal breeding programs. Full article
(This article belongs to the Special Issue Advances in Cattle, Sheep, and Goats Molecular Genetics and Breeding)
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17 pages, 4029 KiB  
Article
A Characterization and Functional Analysis of Peroxisome Proliferator-Activated Receptor Gamma Splicing Variants in the Buffalo Mammary Gland
by Shuwan Wang, Honghe Ren, Chaobin Qin, Jie Su, Xinhui Song, Ruijia Li, Kuiqing Cui, Yang Liu, Deshun Shi, Qingyou Liu and Zhipeng Li
Genes 2024, 15(6), 779; https://doi.org/10.3390/genes15060779 - 13 Jun 2024
Viewed by 693
Abstract
Peroxisome proliferator-activated receptor γ (PPARG) has various splicing variants and plays essential roles in the regulation of adipocyte differentiation and lipogenesis. However, little is known about the expression pattern and effect of the PPARG on milk fat synthesis in the buffalo mammary gland. [...] Read more.
Peroxisome proliferator-activated receptor γ (PPARG) has various splicing variants and plays essential roles in the regulation of adipocyte differentiation and lipogenesis. However, little is known about the expression pattern and effect of the PPARG on milk fat synthesis in the buffalo mammary gland. In this study, we found that only PPARG-X17 and PPARG-X21 of the splicing variant were expressed in the buffalo mammary gland. Amino acid sequence characterization showed that the proteins encoded by PPARG-X17 and PPARG-X21 are endonuclear non-secreted hydrophilic proteins. Protein domain prediction found that only the PPARG-X21-encoded protein had PPAR ligand-binding domains (NR_LBD_PPAR), which may lead to functional differences between the two splices. RNA interference (RNAi) and the overexpression of PPARG-X17 and PPARG-X21 in buffalo mammary epithelial cells (BMECs) were performed. Results showed that the expression of fatty acid synthesis-related genes (ACACA, CD36, ACSL1, GPAT, AGPAT6, DGAT1) was significantly modified (p < 0.05) by the RNAi and overexpression of PPARG-X17 and PPARG-X21. All kinds of FAs detected in this study were significantly decreased (p < 0.05) after RNAi of PPARG-X17 or PPARG-X21. Overexpression of PPARG-X17 or PPARG-X21 significantly decreased (p < 0.05) the SFA content, while significantly increased (p < 0.05) the UFA, especially the MUFA in the BMECs. In conclusion, there are two PPARG splicing variants expressed in the BMECs that can regulate FA synthesis by altering the expression of diverse fatty acid synthesis-related genes. This study revealed the expression characteristics and functions of the PPARG gene in buffalo mammary glands and provided a reference for further understanding of fat synthesis in buffalo milk. Full article
(This article belongs to the Special Issue Advances in Cattle, Sheep, and Goats Molecular Genetics and Breeding)
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18 pages, 6581 KiB  
Article
Transcriptomic Changes and Regulatory Networks Associated with Resistance to Mastitis in Xinjiang Brown Cattle
by Dan Wang, Haiyan Yang, Shengchao Ma, Tingting Liu, Mengjie Yan, Mingming Dong, Menghua Zhang, Tao Zhang, Xiaoxue Zhang, Lei Xu, Xixia Huang and Hong Chen
Genes 2024, 15(4), 465; https://doi.org/10.3390/genes15040465 - 7 Apr 2024
Viewed by 1103
Abstract
Xinjiang brown cattle are highly resistant to disease and tolerant of roughage feeding. The identification of genes regulating mastitis resistance in Xinjiang brown cattle is a novel means of genetic improvement. In this study, the blood levels of IL-1β, IL-6, IL-10, TNF-α, and [...] Read more.
Xinjiang brown cattle are highly resistant to disease and tolerant of roughage feeding. The identification of genes regulating mastitis resistance in Xinjiang brown cattle is a novel means of genetic improvement. In this study, the blood levels of IL-1β, IL-6, IL-10, TNF-α, and TGF-β in Xinjiang brown cattle with high and low somatic cell counts (SCCs) were investigated, showing that cytokine levels were higher in cattle with high SCCs. The peripheral blood transcriptomic profiles of healthy and mastitis-affected cattle were constructed by RNA-seq. Differential expression analysis identified 1632 differentially expressed mRNAs (DE-mRNAs), 1757 differentially expressed lncRNAs (DE-lncRNAs), and 23 differentially expressed circRNAs (DE-circRNAs), which were found to be enriched in key pathways such as PI3K/Akt, focal adhesion, and ECM-receptor interactions. Finally, ceRNA interaction networks were constructed using the differentially expressed genes and ceRNAs. It was found that keynote genes or mRNAs were also enriched in pathways such as PI3K-Akt, cholinergic synapses, cell adhesion molecules, ion binding, cytokine receptor activity, and peptide receptor activity, suggesting that the key genes and ncRNAs in the network may play an important role in the regulation of bovine mastitis. Full article
(This article belongs to the Special Issue Advances in Cattle, Sheep, and Goats Molecular Genetics and Breeding)
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Review

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15 pages, 3363 KiB  
Review
The Function and Mechanism of Long Noncoding RNAs in Adipogenic Differentiation
by Junhao Chen, Yi Pan, Yunhui Lu, Xue Fang, Tianyi Ma, Xi Chen, Yanhong Wang, Xingtang Fang, Chunlei Zhang and Chengchuang Song
Genes 2024, 15(7), 875; https://doi.org/10.3390/genes15070875 - 3 Jul 2024
Cited by 1 | Viewed by 965
Abstract
Adipocytes are crucial for maintaining energy balance. Adipocyte differentiation involves distinct stages, including the orientation stage, clone amplification stage, clone amplification termination stage, and terminal differentiation stage. Understanding the regulatory mechanisms governing adipogenic differentiation is essential for comprehending the physiological processes and identifying [...] Read more.
Adipocytes are crucial for maintaining energy balance. Adipocyte differentiation involves distinct stages, including the orientation stage, clone amplification stage, clone amplification termination stage, and terminal differentiation stage. Understanding the regulatory mechanisms governing adipogenic differentiation is essential for comprehending the physiological processes and identifying potential biomarkers and therapeutic targets for metabolic diseases, ultimately improving glucose and fat metabolism. Adipogenic differentiation is influenced not only by key factors such as hormones, the peroxisome proliferator-activated receptor (PPAR) family, and the CCATT enhancer-binding protein (C/EBP) family but also by noncoding RNA, including microRNA (miRNA), long noncoding RNA (lncRNA), and circular RNA (circRNA). Among these, lncRNA has been identified as a significant regulator in adipogenic differentiation. Research has demonstrated various ways in which lncRNAs contribute to the molecular mechanisms of adipogenic differentiation. Throughout the adipogenesis process, lncRNAs modulate adipocyte differentiation and development by influencing relevant signaling pathways and transcription factors. This review provides a brief overview of the function and mechanism of lncRNAs in adipogenic differentiation. Full article
(This article belongs to the Special Issue Advances in Cattle, Sheep, and Goats Molecular Genetics and Breeding)
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