Publications by authors named "Zhengfen Zhang"
Qingyuan Partridge chickens represent a notable breed of high-quality, slow-growing chickens. The cost of feed constitutes 65-70 % of the total breeding expense for Qingyuan Partridge chickens. Enhancing feed utilization efficiency and reducing feed consumption are crucial for the advancement of Qingyuan Partridge chickens and the broader poultry industry.
View Article and Find Full Text PDFCastration is widely used in poultry and livestock to enhance fat metabolism and improve the flavor, tenderness and juiciness of meat. However, the genetic regulatory mechanism underlying castration consequences have not been clarified. To investigate the key metabolites affecting the quality of capons and the key regulatory mechanisms, Qingyuan partridge roosters were subjected to castration.
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- Excessive abdominal fat in chickens negatively impacts feed efficiency and slaughter yield, prompting a study on the genetic factors influencing fat deposition in Qingyuan partridge chickens.
- Whole transcriptome sequencing of the duodenum revealed 116 differentially expressed genes linked to fat accumulation, including various types of RNAs like mRNAs, lncRNAs, circRNAs, and miRNAs.
- Functional analyses identified important signaling pathways, such as Wnt and PPAR, involved in fat metabolism, suggesting candidate genes and RNA networks that could be targeted to improve breeding practices in broiler chickens.
Article Synopsis
- The Qingyuan partridge chicken, a local Chinese breed, has been improved over 20 years for economic traits while retaining characteristic features like high meat quality and flavor.
- A study of 134 chickens from two breeding and one preserved population revealed low inbreeding and high genetic diversity, offering potential for further development.
- The research identified 42 significant genes related to breed-specific traits and growth, aiding genetic assessment and future breeding programs for the Qingyuan partridge chicken.
Article Synopsis
- - The study investigates the genetic factors affecting carcass traits in Tiannong partridge chickens, which are important for meat production efficiency.
- - Researchers identified 12 key genes linked to carcass characteristics, with SERPINB6 being significant across multiple analyses and influencing cell growth.
- - Findings suggest that the variant rs317934171 regulates SERPINB6 expression, revealing it as a potential target for improving chicken meat production traits.
Qingyuan partridge chicken is a renowned indigenous yellow broiler breed in China. Egg production traits are important economic traits for chickens. With the decreasing cost of whole genome resequencing, identifying candidate genes with more precision has become possible.
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- Qingyuan partridge chicken is a notable Chinese yellow broiler, with a focus on five traits analyzed at 105 days old: body weight (BW), comb height (CH), shank length (SL), shank girth (SG), and feather maturity (FM).
- The study aimed to estimate genetic parameters, specifically direct additive genetic correlations, using about 9600 records and different multi-trait models to enhance breeding strategies.
- Results showed varying heritability estimates for the traits, with direct heritabilities ranging from 0.14 to 0.53, and genetic correlations indicating some positive and negative associations among the traits, providing insights for selective breeding.
Qingyuan partridge chicken is an important indigenous chicken in China. In its breeding schemes, chickens are usually selected at the age of 105-day-old for five traits, including body weight (BW), shank length (SL), shank girth (SG), comb height (CH) and feather maturity (FM). At present, genetic parameters of the aforementioned traits have still not been studied in Qingyuan partridge chickens.
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