Coat color alterations over the years and their association with growth performances in the Menz sheep central nucleus and community-based breeding programs

2020 ◽  
Vol 52 (6) ◽  
pp. 2977-2985
Author(s):  
Tesfaye Getachew ◽  
Ayele Abebe ◽  
Solomon Gizaw ◽  
Barbara Rischkowsky ◽  
Asfaw Bisrat ◽  
...  
Keyword(s):  
Coat Color ◽  
Central Nucleus ◽  
Community Based ◽  
Breeding Programs ◽  
Growth Performances

scholarly journals Breeding Practices and Traits Preferences of Goat Keepers at Lepelle-Nkumpi Local Municipality, South Africa: Implication for the Design of Breeding Programs

2021 ◽  
Author(s):  
Thobela Louis Tyasi ◽  
Jones Ng’ambi ◽  
Stanley Mogashoa
Keyword(s):  
South Africa ◽  
Body Size ◽  
Coat Color ◽  
Meat Production ◽  
Successful Implementation ◽  
Community Based ◽  
Breeding Programs ◽  
Local Municipality ◽  
Breeding Practices ◽  
Selection Of

Abstract Identification of breeding practices and traits preferences by farmers for selection of breeding animals to be parents of the next generations is the crucial step to the successful implementation of community-based breeding programs (CBBPs). The aim of the study was to detect breeding practices and traits preferences by farmers at Lepelle-Nkumpi Local Municipality, South Africa to determine their relevance in establishing a CBBPs. A structural questionnaire was designed and administered to 183 randomly selected goat keepers from 4 villages. Across the 4 communities, the majority of goat keepers were males with the traditional purposes, sales and meat production as their main reasons of keeping goats. Spring breeding season was practiced using natural mating system controlled mainly by means of castration and culling of poor reproductive or undesired goats for breeding. The most important common farmers’ preference traits among the four communities were twining ability, good mothering ability and body size in breeding does, and mating ability, growth rate and body size in breeding bucks. However, the selection of breeding stock might also include qualitative traits such as coat color of goats. The results from this study are useful for designing CBBPs for indigenous goats in Lepelle-Nkumpi Local Municipality.

scholarly journals Population structure, inbreeding and admixture in local cattle populations managed by community‐based breeding programs in Burkina Faso

2021 ◽  
Author(s):  
Dominique Ouédraogo ◽  
Salifou Ouédraogo‐Koné ◽  
Bernadette Yougbaré ◽  
Albert Soudré ◽  
Bienvenue Zoma‐Traoré ◽  
...  
Keyword(s):  
Population Structure ◽  
Burkina Faso ◽  
Community Based ◽  
Breeding Programs

scholarly journals Merle phenotypes in dogs - SILV SINE insertions from Mc to Mh

2018 ◽  
Author(s):  
Langevin Mary ◽  
Helena Synkova ◽  
Tereza Jancuskova ◽  
Sona Pekova
Keyword(s):  
Coat Color ◽  
Study Group ◽  
Wild Type ◽  
Health Consequences ◽  
Breeding Programs ◽  
Health Impairment ◽  
Color Features ◽  
Coat Pattern ◽  
Type Sequence ◽  
Selection Of

ABSTRACTIt has been recognized that the Merle coat pattern is not only a visually interesting feature, but it also exerts an important biological role, in terms of hearing and vision impairments. In 2006, the Merle (M) locus was mapped to the SILV gene with a SINE element in it, and the inserted retroelement was proven causative to the Merle phenotype. Mapping of the M locus was a genetic breakthrough and many breeders started implementing SILV SINE testing in their breeding programs. Unfortunately, the situation turned out complicated as genotypes of Merle tested individuals did not always correspond to expected phenotypes, sometimes with undesired health consequences in offspring. Two variants of SILV SINE, allelic to the wild type sequence, have been described so far - Mc and M.Here we report a significantly larger portfolio of existing Merle alleles (Mc, Mc+, Ma, Ma+, M, Mh) in Merle dogs, which are associated with unique coat color features and stratified health impairment risk. The refinement of allelic identification was made possible by systematic, detailed observation of Merle phenotypes in a cohort of 181 dogs from known Merle breeds, by many breeders worldwide, and the use of advanced molecular technology enabling the discrimination of individual Merle alleles with significantly higher precision than previously available.We also show that mosaicism of Merle alleles is an unexpectedly frequent phenomenon, which was identified in 30 out of 181 (16.6%). dogs in our study group. Importantly, not only major alleles, but also minor Merle alleles can be inherited by the offspring. Thus, mosaic findings cannot be neglected and must be reported to the breeder in their whole extent.In light of negative health consequences that may be attributed to certain Merle breeding strategies, we strongly advocate implementation of the refined Merle allele testing for all dogs of Merle breeds to help the breeders in selection of suitable mating partners and production of healthy offspring.

Quantitative trait loci analysis of seed coat color components for selective breeding in chickpea (Cicer arietinum L.)

2011 ◽  
Vol 91 (1) ◽  
pp. 49-55 ◽  
Author(s):  
Shanoor Hossain ◽  
Joe Panozzo ◽  
Chris Pittock ◽  
Rebecca Ford
Keyword(s):  
Quantitative Trait Loci ◽  
Seed Coat ◽  
Quantitative Trait ◽  
Selective Breeding ◽  
Coat Color ◽  
Seed Coat Color ◽  
Breeding Programs ◽  
Cicer Arietinum L ◽  
Trait Loci ◽  
Color Components

Hossain, S., Panozzo, J. F., Pittock, C. and Ford, R. 2011. Quantitative trait loci analysis of seed coat color components for selective breeding in chickpea (Cicer arietinumL.). Can. J. Plant Sci. 91: 49–55. Chickpea (Cicer arietinum L.) is an annual grain legume, grown worldwide for human consumption with the potential to attract premium prices in markets such as India, Bangladesh and southern Asia. The ability to accurately select for seed coat color, an important export quality trait, would greatly benefit chickpea breeding programs. In order to determine the major genomic loci governing the color trait, the color components of CIE L* (luminance), CIE a* (red/green color) and CIE b* (blue/yellow color), C* (chroma or saturation of the color) and h° (hue or purity of the color) were mapped, and associated molecular markers were identified. A linkage map was constructed with 80 SSR markers distributed over 10 linkage groups at an average marker density of 2.8 cM. Two major quantitative trait loci (QTL), which accounted for up to 36 and 49% of the genetic variance and several smaller genetic effects were determined to govern the color components. These were consistent across two differing environments. Once validated, the markers that are close to and flanking these QTL and significantly associated with the minor gene effects will be useful in future color selective breeding programs.

scholarly journals Morphological characterization of Arab and Oromo goats in northwestern Ethiopia: implications for community-based breeding programs

2020 ◽  
Author(s):  
Oumer Sheriff ◽  
Kefyalew Alemayehu ◽  
Aynalem Haile
Keyword(s):  
Body Weight ◽  
Coat Color ◽  
Strong Association ◽  
Correlation Coefficients ◽  
Field Research ◽  
The Body ◽  
Regression Equations ◽  
Body Measurements ◽  
Breeding Programs ◽  
Chest Girth

Abstract Background: An exploratory field research was conducted in Northwestern Ethiopia, to characterize the morphological features of Arab and Oromo goat populations as a first step to design breeding programs. Ten qualitative and nine quantitative traits were considered from 747 randomly selected goats. All data collected during the study period were analyzed using R statistical software, version 3.5.2, 2018. Results: Plain white coat color was predominantly observed in Arab goats (33.72%) while plain brown (deep and light) coat color was the most frequent in Oromo goats (27.81%). The morphometric measurements indicated that Oromo goats have significantly (P < 0.001) higher body weight and linear body measurements than Arab goats. Positive, strong and highly significant (P < 0.001) correlations were obtained between body weight and most of the body measurements in both goat populations. The highest correlation coefficients of chest girth with body weight for Arab (r = 0.95) and Oromo (r = 0.92) goat populations demonstrated a strong association between these variables. Live body weight could be predicted with regression equations of y = -33.65 + 0.89x for Arab goats (R2 = 90) and y = -37.55 + 0.94x for Oromo goats (R2 = 85), where y and x are body weight and chest girth, respectively, in these goat types. Conclusions: The morphological variations obtained in this study could be complemented by performance data and molecular characterization using DNA markers to guide the overall goat conservation and formulation of appropriate breeding and selection strategies.

scholarly journals Community-based sheep breeding programs generated substantial genetic gains and socioeconomic benefits

animal ◽  
2020 ◽  
Vol 14 (7) ◽  
pp. 1362-1370
Author(s):  
A. Haile ◽  
T. Getachew ◽  
T. Mirkena ◽  
G. Duguma ◽  
S. Gizaw ◽  
...  
Keyword(s):  
Community Based ◽  
Breeding Programs ◽  
Sheep Breeding ◽  
Genetic Gains ◽  
Socioeconomic Benefits

scholarly journals Livestock Keepers’ Attitudes: Keystone of Effective Community-Based Breeding Programs

2021 ◽  
Vol 13 (5) ◽  
pp. 2499
Author(s):  
Bienvenue Zoma-Traoré ◽  
Lorenz Probst ◽  
Salifou Ouédraogo-Koné ◽  
Albert Soudré ◽  
Dominique Ouédraogo ◽  
...  
Keyword(s):  
Positive Attitude ◽  
Cattle Breed ◽  
Principal Component ◽  
Zebu Cattle ◽  
Community Based ◽  
Cattle Breeding ◽  
Breeding Programs ◽  
Taurine Breed ◽  
Effective Community ◽  
Breed Improvement

Livestock keepers in southwestern Burkina Faso hold the local Lobi taurine breed, local Zebu cattle, and their crosses. Some communities in the region have begun to implement community-based cattle breeding programs (CBBPs), which involve animal tagging and recording and, potentially, also bull sharing. Based on the hypothesis that the participation of livestock keepers in CBBPs depends on their attitudes towards these programs, we used questionnaires to survey the attitudes of 125 farmers towards cattle breeding strategies and tools. Results were analyzed using principal component analysis. Farmers showed a highly positive attitude towards maintaining the features of their preferred cattle breed, but their attitudes varied substantially towards crossbreeding for breed improvement. Farmers generally agreed that performance was more important than animal appearance, and most of them were willing to cooperate with breeders’ associations but were skeptical about sharing their bulls with other farmers. The majority was reluctant to record performance data, which may be due to a capacity deficit and their confidence in being able to select the best animals based purely on phenotype. Our analysis suggests that breeders’ associations, as a key component of CBBPs, should lay down clear rules and obligations for their members from the outset. Timely consideration of farmers’ attitudes towards different breeding tools may improve their uptake and guarantee the sustainability of CBBPs.

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