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Production Performance of Different Generations of Muchuan Blackbone Chicken

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Asian Agricultural Research 2018年第8期10卷 85-87页

作者： mohan qiu Zengrong ZHANG Xiaosong JIANG Huarui DU Qingyun LI Chunlin YU Xia XIONG Lihe ZOU Chaowu YANG Animal Breeding and Genetics Key Laboratory of Sichuan Province Sichuan Animal Science Academy Muchuan County Black Phoenix Black-bone Chicken Co. Ltd.

In order to formulate feasible conservation measures and develop and utilize Muchuan black-bone chicken rationally,two generations of Muchuan black-bone chicken were bred,and their production performance and slaughter traits( at the age of 300 d) were compared. The results showed that the reproductive performance,slaughter performance and body size of the Muchuan black-bone chicken of Generation 1( G_1)were all improved compared with those of the Generation 0( G_0)( P <0. 05). At the age of 300 d,the live weight,carcass weight,and leg muscle weight of the G_1 were significantly higher than those of the G_0( P <0. 05); and the chest width of the cocks of the G_1 was significantly higher than that of the G_0( P <0. 05). It suggests that after rigorous selection and utilization of modern poultry breeding techniques,the reproductive performance,slaughter performance and survival rate of Muchuan black-bone chicken can be improved significantly.

关键词：乌骨鸡饲养业发展现状饲养技术

Analyses of Chicken Tenderness Traits Based on Transcriptome Sequencing

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Agricultural Biotechnology 2024年第2期13卷 17-19页

作者： Zengrong ZHANG mohan qiu Chunlin YU Xia XIONG Xiaoyan SONG Bo XIA Shiliang ZHU Jialei CHEN Chaowu YANG Sichuan Animal Science Academy Chengdu 610066China Animal Breeding and Genetics key Laboratory of Sichuan Province Chengdu 610066China

The calpain system is ubiquitous in cells, mainly comprising calpains and calpain inhibitors, and is a widespread calcium-dependent cysteine protease in organisms that is involved in many cellular processes such as muscle degradation in vivo and affects the tenderness of meat after animal slaughter. The study found 128 DEGs that probably regulated tenderness traits were selected from 16 significantly enriched GO terms by transcriptome sequencing analysis, and found that the developmental changes in the expression levels of the CAPN1 gene in the pectoral and leg muscles were significantly positively correlated ( P <0.05) with the cumulative growth values of live weight and comb weight. The developmental changes in the expression levels of the CAST gene in the pectoral and leg muscles were not significantly correlated with the cumulative growth values of live weight and comb weight. Our results helped demonstrate the potential molecular mechanisms of tenderness in chickens and provide valuable information for chicken breeding.

关键词： Chicken Tenderness traits Transcriptome sequencing

Report on the Breeding of Dahen 799 Broilers

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Agricultural Biotechnology 2022年第3期11卷 75-79,86页

作者： Chaowu YANG Chunlin YU mohan qiu Zengrong ZHANG Chenming HU Huarui DU Qingyun LI Xia XIONG Shiliang ZHU Siyang LIU Xiaosong JIANG Sichuan Animal Science Academy Chengdu 610066China Sichuan Dahen Poultry Breeding Co. Ltd.Chengdu 610066China Sichuan Key Laboratory of Animal Genetics and Breeding Chengdu 610066China

[Objectives]This study was conducted to improve the production efficiency of dark-shank partridge-like plumage high-quality broilers and ensure animal welfare,so as to meet the development needs of China’s yellow-feather broiler industry.[Methods]Sichuan Animal Science Academy and Sichuan Dahen Poultry Breeding Co.,*** a joint breeding research *** team bred Dahen 799 broiler complete set line with local chicken breeds as the main material and improving production efficiency,stabilizing meat quality and flavor and achieving autosexing of chicks as the main breeding goals by modern poultry breeding technologies,after 10 years and 8 generations.[Results]The Dahen 799 broiler complete set line was approved by National Commission of Livestock and Poultry Genetic Resources in December *** 66-week-old egg production of the breed reached 189 *** the commercial generation,cocks and hens showed 10-week-old weights of 2668 and 2269 g,respectively;the feed conversion ratio was 2.26-2.35;the survivability was 96.7%-97.2%;and the average intramuscular fat contents of cocks and hens were in the range of 1.8%-2.1%,and the inosinic acid contents were in the range of 2.3-3.2 mg/*** production performance and meat flavor of Dahen 799 broilers were better than Dahen 699 broilers,Sichuan mountainous bone-black chickens and two other social *** with Sichuan mountainous bone-black chickens,the egg production at the age of 66 weeks increased by 47 eggs;the average weight of cocks and hens of the commercial generation at 10 weeks increased by 45.21%;and the autosexing rate of chicks of the commercial generation reached 99.3%.[Conclusions]Dahen 799 broilers have the advantages of good production performance,high feed conversion ratio and excellent meat flavor and the characteristic of autosexing which other breeds do not have,and can fully meet the industrial development needs of dark shanks and partridge-like plumage broilers.

关键词： Dahen broiler High-quality broiler Genetic breeding Performance measurement

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1949—1966年中国残疾军人的优抚

军事历史研究 2021年第2期35卷 75-86页

作者：仇墨涵中国工业互联网研究院党委办公室北京100102

残疾军人为民族独立、人民解放、新中国成立贡献了自己的鲜血和肢体,理应得到国家的保障和社会的尊重。新中国成立至1966年,基于严峻的国际形势和国内高涨的政治氛围,残疾军人的优抚被视为一项长期政治任务,得到了党和国家的高度重视。... 详细信息

残疾军人为民族独立、人民解放、新中国成立贡献了自己的鲜血和肢体,理应得到国家的保障和社会的尊重。新中国成立至1966年,基于严峻的国际形势和国内高涨的政治氛围,残疾军人的优抚被视为一项长期政治任务,得到了党和国家的高度重视。这一时期,残疾军人优抚权主要包括医疗优待、就业优待、物质优待和物质抚恤四项内容。得益于国家的行政主导和全社会的支持,残疾军人优抚工作取得了显著成效,但在制度设计和执行层面均存在一些问题。

关键词：残疾军人优抚权优待抚恤

Small RNA Sequencing Reveals Differentially Expressed piRNAs Related to Hypoxia in Tibetan Chickens

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Agricultural Biotechnology 2022年第4期11卷 52-56,64页

作者： Zengrong ZHANG Xiaosong JIANG mohan qiu Chunlin YU Huarui DU Qingyun LI Han PENG Xia XIONG Xiaoyan SONG Chenming HU Jialei CHEN Chaowu YANG Sichuan Animal Science Academy Chengdu 610066China Animal Breeding and Genetics key Laboratory of Sichuan Province Chengdu 610066China

The relevance of genetic mechanism to the phenotype of hypoxic adaptation remains *** chickens typically used to investigate the mechanism for the adaptation of hypoxia and the recognition of hypoxia-related piRNA remains an open *** purpose of this study was to illustrate whether the piRNAs were related to hypoxic *** of all,the differentially expressed piRNAs(DEpiRNAs)were identified through RNA sequencing between the Tibetan chickens and Daheng ***,the target genes of DEpiRNAs were predicted and annotated by *** network was constructed by *** our study,a total of 277 DEpiRNAs(33 down-regulated,244 up-regulated)were identified in the Tibetan chickens compared with the Daheng *** of the 277 DEpiRNAs predicted 36658 targeted *** Ontology(GO)analysis showed that the target genes were significantly enriched in the biological process correlated with proliferation and apoptosis of cells,including cell cycle,mitochondrial outer membrane permeabilization,and positive regulation of stress-activated mitogen-activated protein kinase *** Encyclopedia of Genes and Genomes(KEGG)analysis implicated that the DEpiRNAs were mainly involved in immune and metabolism,including natural killer cell-mediated cytotoxicity,toll-like receptor signaling pathway and fatty acid ***,a predicted network with four piRNAs acted on 11 pathways via interacting with 22 target genes,in which piR-gga-1368839 regulated metabolic pathways by acting on *** conclusion,we determined the DEpiRNAs in the Tibetan chickens and found that these piRNAs were associated with metabolism,which may be favorable for researching the biological adaptation to hypoxic stress.

关键词： piRNAs Tibetan chicken Hypoxic adaptation RNA sequencing

Differentiation of Expression Profiles of SREBF1 and SREBF2 Gene in Chicken

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Agricultural Biotechnology 2020年第5期9卷 90-93页

作者： mohan qiu Zengrong ZHANG Chunlin YU Xiaosong JIANG Huarui DU Qingyun LI Hengyong XU Huadong YIN Xiaoling ZHAO Qing ZHU Yan WANG Chaowu YANG China Animal Breeding and Genetics Key Laboratory of Sichuan Province Sichuan Animal Science AcademyChengdu 610066China Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province Sichuan Agricultural UniversityChengdu CampusChengdu 611130China

Sterol regulatory element-binding factor-1 and-2(SREBF1 and SREBF2)are important transcription factors involved in the regulating lipid *** on the essential role of SREBF1 and SREBF2,we measured the mRNA expression levels of the two genes in six various tissues at different growth *** results showed that the SREBF1 and SREBF2 were expressed in all six tissues examined in Erlang mountainous chicken(SD02)at 42 d,and were expressed abundantly in the uropygial gland and liver,with relatively lowest levels of expression in the abdominal fat,sebum cutaneum and leg *** expression ratio of SREBF1 and SREBF2 in breast muscle,leg muscle,sebum cutaneum and uropygial gland exhibited a"decline-rise"***,in liver,the expression ratio of these two genes exhibited a"decline-rise-decline"***,the expression level of SREBF1 gene of all tissues was lower than that of SREBF2 except for uropygial *** findings will provide important references for further function investigation of the two genes involved in fat deposition in chickens.

关键词： Chicken SREBF1 SREBF2 Differential expression

Optimized Design of Intelligent Management and Analysis System for Broiler Breeding Information

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Animal Husbandry and Feed Science 2020年第2期12卷 8-11,14页

作者： Yang Chaowu Yu Chunlin qiu mohan Zhang Zenrong Hu Chenming Xiong Xia Yang Li Peng Han Xia Bo Chen Jialei Du Huarui Li Qingyun Jiang Xiaosong Sichuan Dahen Poultry Breeding Co. Ltd.Chengdu 610066China Sichuan Animal Science Academy Chengdu 610066China Sichuan Key Laboratory of Animal Genetics and Breeding Chengdu 610066China

For a long time,the management and analysis of broiler breeding information in China remain in the 1.0 era of manual recording,careless processing,non-standard analysis and non-standard filing,and lack of accurate and intelligent information management and analysis system,which limit the development of broiler breeding *** on the actual needs of broiler breeding in China,the project team focused on the collection,management and analysis of broiler breeding information and successfully developed Intelligent Management and Analysis System for Broiler Breeding *** system is the most complete management and analysis system of broiler breeding information in China,which is closely combined with *** has been successfully applied to broiler breeding by more than 10 breeding institutions in China,some of which are national-level core broiler breeding *** successful development and application of the system will effectively improve the efficiency of broiler breeding in China,narrow the gap between China and developed countries,open the 2.0 era of precise,intelligent and modular broiler breeding,and improve the core competitiveness of broiler breeding in China.

关键词： Broiler Breeding information Data collection Breeding system

Establishment and Analysis of Growth Curve of Muchuan Black Chicken

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Agricultural Biotechnology 2018年第6期7卷 115-118页

作者： Chunlin YU Xiaosong JIANG Huarui DU Chaowu YANG Zengrong ZHANG Bo XIA Chenming HU Xiaoyan SONG Xia XIONG Li YANG Han PENG Qingyun LI mohan qiu Sichuan Animal Science Academy Chengdu 610066China Animal Breeding and Genetics Key Laboratory of Sichuan Province Chengdu 610066China Sichuan Dahen Poultry Breeding Co. LtdChengdu 610066China

To find out the growth and development regularity,the growth curves of Muchuan black chicken at the age of 0-21 weeks were established by Logistic,Bertalanffy and Gompertz models in this *** results showed that all the three models can well fit the growth curve of Muchuan black chicken with a degree above 0.988,while the Gompertz model and the Bertalanffy model was the best for hens and cocks,***,the weight of hens and cocks were analyzed according to their corresponding high fitting *** showed that the inflexion age of Muchuan black chicken was 6.8-6.9 weeks old with an inflexion weight of 692.98 g in hens and 805.57 g in *** conclusion,it was feasible to establish the growth curve of Muchuan black chicken with Logistic,Bertalanffy and Gompertz model.

关键词： Muchuan black chicken Growth and development Cumulative growth Growth curve Fitting degree

Genetic and Breeding Progress Analysis on S06M Line of Dahen Broiler

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Animal Husbandry and Feed Science 2018年第4期10卷 213-215页

作者： qiu mohan Yang Chaowu Du Huarui Li Qingyun Xiong Xia Zhang Zengrong Hu Chenming Xia Bo Yu Chunlin Song Xiaoyan Yang Li Peng Han Jiang Xiaosong Sichuan Animal Science Academy Chengdu 610066 China Sichuan Provincial Key Laboratory of Animal Breeding and Genetics Chengdu 610066 China Sichuan Dahen Limited Poultry Breeding Company Chengdu 610066 China

The genetic and breeding progress of Dahen S06M line was analyzed, in order to improve the selection efficiency. The results showedthat six generations of selection was effective in selecting main characters of S06M line, especially the selection of growth rate had no adverse effecton reproductive performance. All indicators of reproductive performance were improved in varying degrees during breeding, particularly the egg production at 68 weeks of age. The breeding progress of main target traits significantly slowed down after the second generation, but they still maintained at higher levels and the characters of S06M tended to be stable.

关键词： S06M line Breeding Genetic progress