Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR17303200_1.fastq.gz | Fastqsanger.gz | |||
| SRR17303200_2.fastq.gz | Fastqsanger.gz | |||
| SRR17303201_1.fastq.gz | Fastqsanger.gz | |||
| SRR17303201_2.fastq.gz | Fastqsanger.gz | |||
| SRR17303190_1.fastq.gz | Fastqsanger.gz |
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Project description:Gene expression differences between the ovaries of Jingding duck with high and low egg production were assessed using the RNA-Seq technology. A total of 843 differentially expressed genes were identified. These genes have known or potential roles in regulation the egg production. Therefore, they are appealing candidates for further investigation of the gene expression and associated regulatory mechanisms related to egg production of ducks.
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Project description:To evaluate the lncRNAs and mRNAs in ovaries associated with egg production performance in domestic pigeons, high-throughput RNA sequencing of ovaries between high and low egg production performance groups were performed and analyzed in this study.
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Project description:Dongxiang blue-shelled chicken, an indigenous chicken breed in China, has segregated significantly for the dermal hyperpigmentation phenotype. Two lines of the chicken have been divergently selected with respect to comb color for over 20 generations. The recent selection has also resulted in a significant difference in egg production. The red comb line (RCL) chicken produces significantly higher number of eggs than that by the dark comb line (DCL) chicken. The objective of this study was to explore potential mechanisms involved in the relationship between comb color and egg production among chickens. We performed genome-wide association study to identify candidate genes associated with chicken comb color using SNP array data, and we conducted selective sweep analysis to identify putative regions of selection harboring pleiotropic genes affecting both comb color and egg production.
2019-06-04 | GSE124906 | GEO
Project description:Purpose: To identify the key regulatory genes and pathways involved in chicken high egg productivon in HPG axis. Methods: A total of 856 Chinese Luhua chicken was raised in poultry breeding farm of Sichuan Agricultural University, the highest two hundred and the lowest two hundred chicken egg production were considered as high egg production (HEP) and low egg production (LEP) according to the total egg number at 300 days of age, respectively, integrated with RNA-seq sequencing of samples of HPG axis (hypothalamus, pituitary gland and ovary) from three HEP and three LEP chickens at 300 days of age. Results: A total 86.7 Gb RNA-seq sequences were generated, and with each library averaged 5.1 Gb. Conclusions: These important data might improve our understanding of reproductive biology of Luhua chicken by providing comprehensive gene expression information at transcriptional level. We indicate that our approach will contribute to the isolation of effective molecular markers that can be used in genetic breeding programs in Chinese domestic Luhua chicken.
2019-12-07 | GSE141588 | GEO
Project description:We report on the small RNA profiles of Schistosoma japonicum (S. japonicum) miRNAs using small RNA deep sequencing in the key stages of male-female pairing, gametogenesis, and egg production.
2016-01-07 | GSE74654 | GEO
Project description:Broiler chicken production is crucial to meet the increasing global food demand. Hyperphagic and obese broiler breeder hens have a short production cycle, which is challenged by age-associated egg quality and fertility decline, affecting hatchability. A fertilized egg is a comprehensive set of essential elements to nurture and develop a healthy chick. Egg albumin occupies most of the egg content, which is synthesized and secreted by the magnum. The genetic regulation of albumin biosynthesis in broiler breeder hens and its alteration with age might reveal the genetic marker that will produce quality eggs in subsequent generations. Hence, the objective of the study is to determine the differentially expressed genes (DEGs) and pathways involved in albumin biosynthesis in the magnum (young vs aged). The magnum tissues were collected from the broiler breeder hens at peak production, identified as the young group (35 weeks, N=30), and from the declined production, recognized as the aged group (50 weeks, N=30). Five samples from each group (n=5) were used for RNA sequencing and analyzed to get DEGs and associated pathways. The significantly upregulated genes with a putative function in quality egg formation were confirmed using qPCR. Seventy-five up-regulated and 52 down-regulated genes were determined. The top 20 most upregulated genes and top 20 most downregulated genes, based on their putative function, were categorized into five groups: egg white synthesizing (AMDHD1, FER, CTNNA3), molecular communication (VAPA), oviduct tissue regeneration (ADAM19, CFAP100, AMD1, TM4SF19, SLC39A13, VMO1), and defense (ZBTB46, STAM2, OVoDA3). “Post-translational protein phosphorylation” was the most significantly enriched Reactome pathway involving DNAJC3, PPP3CA, TF, SPARCL1, PDIA6, SGPP2, HSP90B1, and PNPLA2 genes. The study successfully identified DEGs, genetic networks, and pathways that can be used as genetic markers to select quality egg producing broiler breeder hens.
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Project description:The life cycle of schistosomes is complex, being characterised by a series of distinct parasitic and free-living phases involving an invertebrate snail host, water and a mammalian host. A custom designed oligonucleotide microarray was utilized to profile developmental gene expression in the Asian blood fluke, Schistosoma japonicum during these parasitic and free-living transitions. Total RNAs were isolated from lung schistosomula, juvenile females and males (paired but little or no egg production), adult males and females (paired with full scale egg production), eggs, miracidia, sporocysts and cercariae. We focused on the three distinct environmental phases of the lifecycle - aquatic/snail (eggs, miracidia, sporocysts, cercariae), juvenile (lung schistosomula and paired pre-egg laying adults) and adult (paired males and females, both examined separately) stages.
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Project description:Abdominal fat is considered negatively associated with egg production. Therefore, it is necessary to clarity the regulatory mechanism for the abdominal fat deposition of Muscovy duck.
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Project description:Follicular atresia is an important factor affecting reproductive performance. In birds, less than 5% of follicles could complete their development process and mature ovulation, while the other 95% become atretic follicles and eventually degraded3. Yangzhou geese are famous for their high egg production, however, the average number of eggs per goose is 40-80 and the peak laying rate is 40%-50%12. As an important meat source of poultry, the low egg production of goose has seriously affected the production cost and industrialization development. How to avoid follicular atresia and promote its normal development could help to improve egg production. Therefore, understanding the mechanism of follicular atresia in geese is of great significance for improving egg production.Isobaric tags for relative and absolute quantification (iTRAQ) labeling coupled to liquid chromatography-tandem mass spectrometry (LC-MS/MS) was used to quantitatively identify differentially expressed proteins (DEPs) between normal and atretic follicles.
2021-09-29 | PXD028836 |