Characterization of the production system and breeding practices of indigenous goat keepers in Hai district, Northern Tanzania: implications for community-based breeding program

2020 ◽  
Vol 52 (6) ◽  
pp. 2955-2967
Author(s):  
A. S. Nguluma ◽  
E. Hyera ◽  
Z. Nziku ◽  
E. M. Shirima ◽  
M. S. H. Mashingo ◽  
...  
Keyword(s):  
Production System ◽  
Breeding Program ◽  
Community Based ◽  
Northern Tanzania ◽  
Indigenous Goat ◽  
Breeding Practices

scholarly journals Characterization of production system and breeding practices of sheep producers in Doyogena district, Southern Ethiopia

2016 ◽  
Vol 11 (52) ◽  
pp. 5192-5201 ◽  
Author(s):  
M. Taye ◽  
M. Yilma ◽  
S. Mengistu ◽  
T. Abiso ◽  
Z. Bassa ◽  
...  
Keyword(s):  
Production System ◽  
Southern Ethiopia ◽  
Breeding Practices

scholarly journals Phenotypic Performance and Response to Selection for Body Weight Traits of Black Bengal Goat (BBG) in a Community Breeding Program

2021 ◽  
Vol 04 (05) ◽  
Author(s):  
A. Akhtar ◽  
Keyword(s):  
Body Weight ◽  
Production System ◽  
Test Group ◽  
Breeding Program ◽  
Phenotypic Correlation ◽  
Community Based ◽  
Low Input ◽  
Treatment Groups ◽  
System Data ◽  
Black Bengal Goat

This piece of work was conducted to investigate the genetic improvement of body weight (BW) in Black Bengal goat (BBG) in-situ through a community based breeding program under a low input production system. Data on a total of 466 individuals from three villages; Gangatia, Borochala and Pachpai at Bhaluka upazila in Mymensingh district from 2009 to 2015 with three progressive generations were taken for this work. Two breeding strategies (BS); mating among selected superior bucks and does (denoted as BS1) and mating existing does with selected superior bucks (denoted as BS2) were followed for mating plan of the community breeding program. A control or test group with mating among existing bucks and does (denoted as BS3) were also observed to compare with treatment groups. Phenotypic performance and genetic parameters for BW traits were studied. Data were analyzed by SPSS 17.0 and VCE 4.2.5. The average BW at birth, 3-month, 6-month, sexual maturity, 9-month, and 12-month were 1.42±0.03, 5.14±0.07, 8.48±0.17, 9.88±0.16, 11.75±0.16 and 15.19±0.16 kg, respectively, having significant effect for sex (p<0.05-p<0.001), generation (p<0.001) and BS (p<0.001). The heritability estimates for BW traits were medium ranging from 0.45 to 0.57. The genetic correlation (rg) and phenotypic correlation (rp) for BW traits were positive with low to high strengths (0.02 to 0.99 for rg and 0.17** to 0.99** for rp). The average realized responses due to selection in three progressive generations for BW traits varied from 0.123 to 0.480 kg per generation. It may be concluded that community based breeding program with selected superior bucks and does is very rationale under low input production system, as it improved BW in progressive generations. However, estimates of heritability and rg indicated further scope of improvement by continuous culling of inferior does and bucks in breeding program.

Goat farmers production objectives and trait preferences in the North West province of South Africa: An approach to identify selection criteria for community-based breeding program

2021 ◽  
Vol 12 (2) ◽  
pp. 64-75
Author(s):  
Fortunate Mtshali Thobile ◽  
Ntanganedzeni Mapholi Olivia ◽  
Tebogo Ncube Keabetswe ◽  
Farai Dzomba Edgar ◽  
C. Matelele Tlou ◽  
...  
Keyword(s):  
South Africa ◽  
Selection Criteria ◽  
Breeding Program ◽  
Community Based ◽  
North West ◽  
The North ◽  
North West Province ◽  
Trait Preferences ◽  
Production Objectives

scholarly journals Characterization of broiler poultry production system in Rwanda

2016 ◽  
Vol 49 (1) ◽  
pp. 71-77 ◽  
Author(s):  
Francis Mbuza ◽  
Rosine Manishimwe ◽  
Janvier Mahoro ◽  
Thomas Simbankabo ◽  
Kizito Nishimwe
Keyword(s):  
Production System ◽  
Poultry Production

scholarly journals Phenotypic and molecular characterization of a set of tropical maize inbred lines from a public breeding program in Brazil

BMC Genomics ◽  
2022 ◽  
Vol 23 (1) ◽  
Author(s):  
Sirlene Viana de Faria ◽  
Leandro Tonello Zuffo ◽  
Wemerson Mendonça Rezende ◽  
Diego Gonçalves Caixeta ◽  
Hélcio Duarte Pereira ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Structure ◽  
Inbred Lines ◽  
Breeding Program ◽  
Tropical Maize ◽  
Maize Breeding ◽  
Breeding Programs ◽  
The Public ◽  
Maize Inbred Lines

Abstract Background The characterization of genetic diversity and population differentiation for maize inbred lines from breeding programs is of great value in assisting breeders in maintaining and potentially increasing the rate of genetic gain. In our study, we characterized a set of 187 tropical maize inbred lines from the public breeding program of the Universidade Federal de Viçosa (UFV) in Brazil based on 18 agronomic traits and 3,083 single nucleotide polymorphisms (SNP) markers to evaluate whether this set of inbred lines represents a panel of tropical maize inbred lines for association mapping analysis and investigate the population structure and patterns of relationships among the inbred lines from UFV for better exploitation in our maize breeding program. Results Our results showed that there was large phenotypic and genotypic variation in the set of tropical maize inbred lines from the UFV maize breeding program. We also found high genetic diversity (GD = 0.34) and low pairwise kinship coefficients among the maize inbred lines (only approximately 4.00 % of the pairwise relative kinship was above 0.50) in the set of inbred lines. The LD decay distance over all ten chromosomes in the entire set of maize lines with r2 = 0.1 was 276,237 kb. Concerning the population structure, our results from the model-based STRUCTURE and principal component analysis methods distinguished the inbred lines into three subpopulations, with high consistency maintained between both results. Additionally, the clustering analysis based on phenotypic and molecular data grouped the inbred lines into 14 and 22 genetic divergence clusters, respectively. Conclusions Our results indicate that the set of tropical maize inbred lines from UFV maize breeding programs can comprise a panel of tropical maize inbred lines suitable for a genome-wide association study to dissect the variation of complex quantitative traits in maize, mainly in tropical environments. In addition, our results will be very useful for assisting us in the assignment of heterotic groups and the selection of the best parental combinations for new breeding crosses, mapping populations, mapping synthetic populations, guiding crosses that target highly heterotic and yielding hybrids, and predicting untested hybrids in the public breeding program UFV.

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