scholarly journals Widespread introgression in Chinese indigenous chicken breeds from commercial broiler

2019 ◽  
Vol 12 (3) ◽  
pp. 610-621 ◽  
Author(s):  
Chunyuan Zhang ◽  
Deng Lin ◽  
Yuzhe Wang ◽  
Dezhi Peng ◽  
Huifang Li ◽  
...  
Keyword(s):  
Indigenous Chicken ◽  
Commercial Broiler ◽  
Chicken Breeds

scholarly journals Social facilitation between commercial broilers and Nigerian indigenous chicks and its effect on their welfare

2018 ◽  
Vol 51 (4) ◽  
pp. 139-146 ◽  
Author(s):  
Oluwaseun Serah Iyasere ◽  
Victor Juwon Oyeniran ◽  
Oluwatobiloba Oyawale ◽  
Deborah Adeniyi ◽  
Victoria Anthonia Uyanga
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Social Facilitation ◽  
Body Weight Gain ◽  
Positive Influence ◽  
Indigenous Chicken ◽  
Single Strain ◽  
Significant Difference ◽  
Commercial Broiler ◽  
Chicken Breeds

Abstract This study was undertaken to investigate how social facilitation between two chicken breeds could affect their welfare. Sixty chicks each of a commercial broiler (CB) and Nigerian indigenous chicken (NIC) breed were used for this study. At four days of age, the birds were randomly assigned into three treatments namely: T1 – singlestrain CB (10 birds), T2 – single-strain NIC (10 birds) and T3 – mixed-strain (5 CB and 5 NIC) each having three replicates. Feed intake and weight gain were measured from the 1st to the 4th week of age. Behavioural observations were undertaken between 09:00 h – 10:00 h for three consecutive days per week from the 2nd to 7th week of age. At the end of the 7th week, six birds per treatment were randomly selected for test of fear (tonic immobility) and level of stress (heterophil/lymphocyte ratio, H:L). Data collected were subjected to multivariate analysis using SPSS (version 21). A higher percentage (P < 0.05) of the CB displayed feeding, drinking and sitting compared to the NIC. However, higher percentage (P < 0.05) of the NIC displayed preening, foraging and standing behaviours compared to the CB. The percentage of birds drinking was greater in the mixed-strain (MS) compared to single-strain (SS). Also, there was a significant difference (P < 0.05) in breed × flock structure (FS) interaction on feeding and sitting behaviours specifically for NIC, where the percentage of NIC feeding was greater in the MS compared to SS. However, percentage of NIC sitting was greater (P < 0.05) in the SS compared to MS. CB were more fearful (P < 0.05) than NIC and chickens in the MS were less fearful (P < 0.05) compared to SS. The level of fear was reduced (P < 0.05) in the CB and NIC reared in MS compared to SS. H:L ratio was similar in CB and NIC reared either as SS or MS. Feed intake followed this trend T1 > T3 > T2. CB gained more weight compared to NIC. Body weight gain was similar in the SS compared to MS. In conclusion, MS management system had a positive influence on the welfare of both breeds.

scholarly journals Meat quality traits of four Chinese indigenous chicken breeds and one commercial broiler stock

2013 ◽  
Vol 14 (10) ◽  
pp. 896-902 ◽  
Author(s):  
Rong-fa Guan ◽  
Fei Lyu ◽  
Xiao-qiang Chen ◽  
Jie-qing Ma ◽  
Han Jiang ◽  
...  
Keyword(s):  
Meat Quality ◽  
Quality Traits ◽  
Indigenous Chicken ◽  
Meat Quality Traits ◽  
Commercial Broiler ◽  
Chicken Breeds

scholarly journals Whole genome sequencing revealed genetic diversity and selection of Guangxi indigenous chickens

2021 ◽  
Author(s):  
Junli Sun ◽  
Tao Chen ◽  
Min Zhu ◽  
Ran Wang ◽  
Yingfei Huang ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Nucleotide Diversity ◽  
Selective Sweep ◽  
Indigenous Chicken ◽  
Population Structure Analysis ◽  
Whole Genomes ◽  
Commercial Broiler ◽  
Chicken Breeds ◽  
Selection Of

AbstractGuangxi chickens play an important role in promoting the high-quality development of the broiler industry in China, but their value and potential are yet to be discovered. To determine the genetic diversity and population structure of Guangxi indigenous chicken, we analyzed the whole genomes of 185 chicken from 8 phenotypically and geographically representative Guangxi chicken breeds, together with 12 RJFt, 12 BRA and 12 WL genomes available from previous studies. Calculation of heterozygosity (Hp), nucleotide diversity (π), and LD level indicated that Guangxi populations were characterized by higher genetic diversity and lower differentiation than RJFt and commercial breeds except HGFC. Population structure analysis also confirmed the introgression from commercial broiler breeds. Each population clustered together while the overall differentiation was small, MA has the richest genetic diversity among all varieties. Selective sweep analysis revealed BCO2, EDN3 and other candidate genes have received strong selection in local breeds, these also provided novel breeding visual and data basis for future breeding.

scholarly journals Contribution of exotic chicken breeds to dietary diversity of the rural households in Ethiopia

2018 ◽  
Vol 6 (2) ◽  
pp. 99-107
Author(s):  
Teklemariam Abadi
Keyword(s):  
Dietary Diversity ◽  
Rural Households ◽  
Indigenous Chicken ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Systematic Random Sampling ◽  
Chicken Breed ◽  
Governmental Organizations ◽  
Non Governmental Organizations ◽  
Chicken Breeds

The study was conducted in midland and lowland agro-ecological zone of North western zone of Tigray, Ethiopia. Two districts were selected purposively based on their potential exotic chicken breed production. Out of the total chicken producers in the study area 264 farmers, 132 from each of the two districts were selected randomly using systematic random sampling methods. It was conducted in cross sectional survey data from 264 respondents in 2016. Its aim was to assess the contribution of producing exotic chicken to dietary diversity of the rural households with 24 hours recall method. The study examines the study area is characterized in a low dietary diversity mainly defined by starchy staples (grains, condiments, oil or fats) at the expense of protein sources (meat, fish, fruits, vegetables, eggs). The result also indicates that there is a higher probability of the exotic chicken producers groups to move from a medium dietary diversity status to a high dietary diversity status as compared with indigenous chicken producers. Based on the study result, there is possibility to improve dietary diversity and income of the households through introduction and dissemination of exotic chicken breeds to rural households. Hence, governmental and non-governmental organizations should help in intervention of exotic chicken breed to the farm households by giving different incentives.

scholarly journals Geographic Origin and Genetic Characteristics of Japanese Indigenous Chickens Inferred from Mitochondrial D-Loop Region and Microsatellite DNA Markers

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2074
Author(s):  
Ayano Hata ◽  
Atsushi Takenouchi ◽  
Keiji Kinoshita ◽  
Momomi Hirokawa ◽  
Takeshi Igawa ◽  
...  
Keyword(s):  
Dna Markers ◽  
Microsatellite Dna ◽  
Genetic Relationships ◽  
Indigenous Chicken ◽  
Genetic Characteristics ◽  
Indigenous Chickens ◽  
Loop Region ◽  
Microsatellite Dna Markers ◽  
D Loop ◽  
Chicken Breeds

Japanese indigenous chickens have a long breeding history, possibly beginning 2000 years ago. Genetic characterization of Japanese indigenous chickens has been performed using mitochondrial D-loop region and microsatellite DNA markers. Their phylogenetic relationships with chickens worldwide and genetic variation within breeds have not yet been examined. In this study, the genetic characteristics of 38 Japanese indigenous chicken breeds were assessed by phylogenetic analyses of mitochondrial D-loop sequences compared with those of indigenous chicken breeds overseas. To evaluate the genetic relationships among Japanese indigenous chicken breeds, a STRUCTURE analysis was conducted using 27 microsatellite DNA markers. D-loop sequences of Japanese indigenous chickens were classified into five major haplogroups, A–E, among 15 haplogroups found in chickens worldwide. The haplogroup composition suggested that Japanese indigenous chickens originated mainly from China, with some originating from Southeast Asia. The STRUCTURE analyses revealed that Japanese indigenous chickens are genetically differentiated from chickens overseas; Japanese indigenous chicken breeds possess distinctive genetic characteristics, and Jidori breeds, which have been reared in various regions of Japan for a long time, are genetically close to each other. These results provide new insights into the history of chickens around Asia in addition to novel genetic data for the conservation of Japanese indigenous chickens.

Origin of Hungarian indigenous chicken breeds inferred from mitochondrial DNA D-loop sequences

2010 ◽  
Vol 41 (5) ◽  
pp. 548-550 ◽  
Author(s):  
T. Revay ◽  
N. Bodzsar ◽  
V. E. Mobegi ◽  
O. Hanotte ◽  
A. Hidas
Keyword(s):  
Mitochondrial Dna ◽  
Indigenous Chicken ◽  
D Loop ◽  
Chicken Breeds

scholarly journals Avian leukosis virus in indigenous chicken breeds, China

2015 ◽  
Vol 4 (1) ◽  
pp. 1-2 ◽  
Author(s):  
Xuan Dong ◽  
Peng Zhao ◽  
Bu Xu ◽  
Jianhua Fan ◽  
Fanfeng Meng ◽  
...  
Keyword(s):  
Avian Leukosis Virus ◽  
Indigenous Chicken ◽  
Chicken Breeds

Genetic variability of two Italian indigenous chicken breeds inferred from microsatellite marker analysis

2016 ◽  
Vol 57 (4) ◽  
pp. 435-443 ◽  
Author(s):  
S. Sartore ◽  
P. Sacchi ◽  
D. Soglia ◽  
S. Maione ◽  
A. Schiavone ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Microsatellite Marker ◽  
Indigenous Chicken ◽  
Marker Analysis ◽  
Chicken Breeds ◽  
Microsatellite Marker Analysis
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