scholarly journals Do Crossbreeding using Exotic Breeds in Goat is the Right Solution for a Low-input Production System in Ethiopia? : A Review

2021 ◽  
Author(s):  
Zeleke Tesema ◽  
Damitie Kebede
Keyword(s):  
Production System ◽  
Genetic Improvement ◽  
Reproductive Technologies ◽  
Improvement Program ◽  
Selection Program ◽  
Low Input ◽  
The Future ◽  
Improvement Programs ◽  
Breed Selection ◽  
The Right

Analysis and evaluation of the previous genetic improvement attempts and their fruition are paramount to make the right decision in the future. Hence, this paper reviews the status of goat genetic improvement programs through quantitative evidence and elucidates how it can be implemented in the future through an intensive literature review. Goat genetic improvement through crossbreeding was initiated early in 1975. However, most crossbreeding programs have lacked analysis of the existing resources and infrastructure and also lack long-term strategies. As a result, crossbreeding program was discontinued without significant contribution due to incompatibility of the exotic genotype with low-input production systems. On the other hand, the moderate to high genetic variation within a population open the window for within-breed selection. Accordingly, a well-designed within-breed selection program was initiated late in 2013 for specified breeds. Currently, governmental and non-governmental institutions plan to scale up community-based within-breed selection program. Besides, the efficiency of assisted reproductive technologies in goat genetic improvement was evaluated by ICARDA and reported a moderate achievement. However, the application of molecular technologies in Ethiopia is only limited to diversity studies. Nevertheless, there is an opportunity to use molecular technologies to enhance the genetic progress of a genetic improvement program. In conclusion, the expected benefits from crossbreeding program were not obtained and will not be obtained under the existing low input-production system. Therefore, a within-breed selection program would be an ideal option for the existing low-input production system if integrated with assisted reproductive and molecular technologies.

scholarly journals Population structure and genetic diversity analysis in Sali (Oryza sativa) rice germplasm of Assam using microsatellite markers

2021 ◽  
Vol 58 (2) ◽  
pp. 279-286
Author(s):  
Sandhani Saikia ◽  
Pratap Jyoti Handique ◽  
Mahendra K Modi
Keyword(s):  
Genetic Diversity ◽  
Ssr Markers ◽  
Genetic Improvement ◽  
Crop Improvement ◽  
Mean Value ◽  
Diversity Analysis ◽  
Rice Cultivars ◽  
Improvement Program ◽  
Information Index ◽  
Improvement Programs

Genetic diversity is the source of novel allelic combinations that can be efficiently utilized in any crop improvement program. To facilitate future crop improvement programs in rice, a study was designed to identify the underlying genetic variations in the Sali rice germplasms of Assam using SSR markers. The 129 SSR markers that were used in the study amplified a total of 765 fragments with an average of 5.93 alleles per locus. The Shannon's Information Index was found to be in the range from 0.533 to 1.786. The Polymorphism Information Content (PIC) fell into the range from 0.304 to 0.691 with a mean value of 0.55. The overall FST value was found to be 0.519 that indicated the presence of genetic differentiation amongst the genotypes used in the study. The Sali population was divided into two clusters. The information obtained from the present study will facilitate the genetic improvement of Sali rice cultivars.

scholarly journals Legal regime of unimplanted embryos in vitro from the positions of doctrine, civil law and judicial practice

2020 ◽  
pp. 238-242
Author(s):  
Nataliia Kvit
Keyword(s):  
Human Rights ◽  
Property Rights ◽  
Assisted Reproductive Technologies ◽  
Civil Law ◽  
Reproductive Technologies ◽  
Legal Regime ◽  
European Court ◽  
The Future ◽  
The Right

The article deals with the problem of determining the legal regime of unimplanted embryo in vitro, which due to the significantdevelopment of the field of assisted reproductive technologies, is increasingly at risk of its illegal use, or even illegal creation for commercialor other non-infertility treatment. The author analyzes different doctrinal approaches in the civil law of Ukraine and Germany,through the prism of the current legal regulation and practice of the European Court of Human Rights. The paper supports the positionon the right to the embryo as a personal immaterial right and expands it in the sense that such a component of reproductive rights asthe right to determine the future fate of embryos in vitro will also belong to persons to whom assisted reproductive technologies havebeen applied and as a result these embryos where created. Resulting from this analysis, the position on the inadmissibility of the interpretationof the unimplanted embryo as an object of property law is expressed. To support this point of view, the author cites the judgmentof the European Court of Human Rights in Parrillo v. Italy, in which the court emphasized the inadmissibility of the assessmentof embryos as an object of property rights. In particular, the paper proposes to define the regime of unimplanted embryo in vitro as anobject that has a personal immaterial connection to persons for whose treatment of infertility (parents-customers) it was created. Andit is these individuals who will have the right to determine its future. In this regard, it is proposed to reflect this concept in the cuurentregulation in partricular Procedure for the use of assisted reproductive technologies. From the proposed wording, first, it will followthat in vitro embryos created as a result of the partial or full use of donor biological material at the request of persons to whom assistedreproductive technologies are applied will have this personal connection only with the future parents and there will not be an ethicaldilemma regarding who will have the right to determine their future fate (biological parents (reproductive cell donors) or future parents).Secondly, it will also mean that embryos can only be created for reproductive purposes, and an institution providing reproductive ser -vices will not have the right to create or dispose of embryos in vitro at its own discretion without the proper consent of its future parent.And, thirdly, it will exclude the possibility of interpreting such embryos as objects of property rights.

The N'Dama cattle genetic improvement programme: a review

2007 ◽  
Vol 40 ◽  
pp. 65-69 ◽  
Author(s):  
N.A. Bosso ◽  
N. Corr ◽  
M. Njie ◽  
A. Fall ◽  
E.H. van der Waaij ◽  
...  
Keyword(s):  
Production System ◽  
Genetic Improvement ◽  
Implementation Process ◽  
The Gambia ◽  
Genetic Progress ◽  
Low Input ◽  
Improvement Programme ◽  
N’Dama Cattle

SummaryThis paper reviews the successful N'Dama cattle genetic improvement programme implemented in a low input production system at the International Trypanotolerance Centre (ITC) in 1994, in The Gambia. The first part of the paper presents the genetic improvement programme. The second part deals with the analysis of the genetic improvement programme. The success of the genetic improvement programme expressed through genetic progress and the benefits for the farmers is encouraging. Recommendations to strengthen the implementation process in the field are made.

Biotechnologies of reproduction applied to dairy cattle production: Embryo transfer and IVF

2003 ◽  
Vol 83 (3) ◽  
pp. 403-407 ◽  
Author(s):  
D. Bousquet ◽  
E. B. Burnside ◽  
B. J. Van Doormaal
Keyword(s):  
Dairy Cattle ◽  
Embryo Transfer ◽  
Artificial Insemination ◽  
Genetic Improvement ◽  
Reproductive Technologies ◽  
Cattle Production ◽  
Economic Traits ◽  
Improvement Program ◽  
Potential Development ◽  
Highly Correlated

The objective of this paper is to review the utilization and outcome of reproductive biotechnologies in dairy cattle. Embryo transfer and IVF have their respective limits that influence their impact on a genetic improvement program. Embryo transfer is efficient and profitable in an artificial insemination breeding and selection program and IVF has great potential. Development of markers highly correlated with various economic traits will progressively be added to the present schemes to make them even more powerful. Key words: Reproductive technologies, embryo transfer, IVF, dairy cows, genetic

scholarly journals Genetic improvement of beef cattle through opportunities in genomics

2010 ◽  
Vol 39 (suppl spe) ◽  
pp. 247-255 ◽  
Author(s):  
Stephen Miller
Keyword(s):  
Beef Cattle ◽  
Dairy Cattle ◽  
Genetic Improvement ◽  
Reproductive Technologies ◽  
High Density ◽  
Cattle Breeding ◽  
Production Chain ◽  
Dairy Cattle Breeding ◽  
Improvement Programs ◽  
Genomic Predictions

Genomics will improve the efficiency of beef cattle genetic improvement programs through the incorporation of genomic predictions into traditional genetic evaluations. The global dairy cattle breeding industry has been changed considerably in the last year through the implementation of genomic selection. Now proven to work in dairy cattle breeding, the challenge remains for the beef industry to successfully implement this technology. The primary challenge in beef cattle is the required resource population that relates genomic profile to phenotypic performance, which is quite large and its establishment will require collaboration or a significant investment by any one enterprise. Another challenge in beef cattle is the requirement for genomic predictions to function across breeds, which will require denser marker panels. Opportunities to increase genetic progress include increased accuracy of selection, reduced generation interval, increased selection intensity and better utilization of limited recording capacity, such as individual feed intake, along with opportunities to genetically change novel traits. Implementation of a low density panel at the commercial level will allow informative decisions based on genetic potential at all levels of the production chain. This reduced panel will include predictive SNP based on fine QTL mapping efforts, combined with additional SNP to enable imputation of genotypes from a high density SNP panel, when combined with high density genotypes of key ancestors, such as sires. With electronic recording in cattle, a single genotyping event on each animal would provide information throughout the beef production chain, which will create the incentive for genetic change. Genomics will create new opportunities for reproductive technologies such as embryo transfer as elite females will be identified with increased accuracy. Potential changes to the structure of the breeding industry are discussed including changes to recording strategies and the development of novel beef products.

scholarly journals Melanocortin-4 Receptor (MC4R) Gene as the Main Gene for Rapid Growth Selection in Beef Cattle

2019 ◽  
Vol 29 (2) ◽  
pp. 85 ◽  
Author(s):  
Peni Wahyu Prihandini ◽  
D Maharani
Keyword(s):  
Beef Cattle ◽  
Candidate Gene ◽  
Rapid Growth ◽  
Genetic Improvement ◽  
Growth Traits ◽  
Economic Traits ◽  
Improvement Program ◽  
Selection Program ◽  
Mc4r Gene ◽  
Melanocortin 4 Receptor

Genetic improvement for economic traits such as growth is important in beef cattle selection program. This paper discusses melanocortin-4 receptor (MC4R) gene as a candidate gene for rapid growth based on its function, location and pathway, as well as its polymorphism and identified genotypes associated with economic traits, and its application as a marker-assisted selection. MC4R is a prominent gene encoding growth traits and has a critical role in mediating the effect of leptin in regulating food consumption and energy balance. Many identified MC4R gene polymorphisms are associated with growth traits. The MC4R gene, therefore, is considered as a functional candidate gene for growth traits and can be used as a marker in selection program based on molecular genetics. The use of molecular markers such as MC4R gene, therefore, can be applied in genetic improvement program for growth traits in cattle. By using MC4R gene, the efforts to build breeding system in small populations can be proposed. For instance, with an effective population size (Ne) of about 40 heads, the first generation (G1) will be obtained with a composition of GG 61.1%, CG 33.3% and CC 5.6% and male and female ratio of 178:11 and generates ideal Ne of 41 heads. In the third generation, therefore, GG composition will be 100%. The results of molecular analysis can be further used as a guideline in the development and genetic improvement strategies of beef cattle.

scholarly journals Emergence Percentage and Speed of Rootstocks for Citriculture in South of Brazil

2019 ◽  
Vol 11 (5) ◽  
pp. 49
Author(s):  
Léo O. D. Marques ◽  
Paulo Mello-Farias ◽  
Roberto P. de Oliveira ◽  
Maximiliano Dini ◽  
Walter S. Soares Filho ◽  
...  
Keyword(s):  
Genetic Improvement ◽  
Seedling Emergence ◽  
Weather Conditions ◽  
Improvement Program ◽  
Randomized Design ◽  
Emergence Percentage ◽  
Improvement Programs ◽  
South Of Brazil ◽  
Lemon Tree

The fact that Brazilian citriculture has focused on few rootstocks poses several phytosanitary risks to the culture and has made genetic improvement programs develop hybrid genotypes to be used as novel alternatives. This study aimed at evaluating the behavior of 42 different rootstocks regarding their emergence percentage and speed in weather conditions experienced in the extreme south of Brazil. Seeds of hybrids developed by the Citrus Genetic Improvement Program (PMG Citros) at the Embrapa Mandioca e Fruticultura (PMG Citros) and cultivars from other citrus growing regions were sown in conical tubes filled with commercial substrate in May 2017. A thoroughly randomized design with 4 replicates, each composed of 45 sampling units, was employed. Emergence percentage and emergence speed of every genotype were evaluated and the ones with the highest emergence percentage of seedlings and the ones with the most precocious emergence were identified. All genotypes completed seedling emergence 98 days after sowing. Seeds of Trifoliata, TSKC × CTSW-041 and TSKC × CTSW-025 had the highest values of seedling emergence whereas the highest emergence speed indexes were exhibited by genotypes Trifoliata and lemon tree ‘Cravo’.

scholarly journals Genetic and environmental contributions to increased wheat yield in Minas Gerais, Brazil

2009 ◽  
Vol 66 (3) ◽  
pp. 317-322 ◽  
Author(s):  
Adeliano Cargnin ◽  
Moacil Alves de Souza ◽  
Vanoli Fronza ◽  
Cláudia Martellet Fogaça
Keyword(s):  
Grain Yield ◽  
Genetic Improvement ◽  
Wheat Yield ◽  
Minas Gerais ◽  
Brazilian Savanna ◽  
Genetic Progress ◽  
Improvement Program ◽  
Yield Data ◽  
Rainy Period ◽  
Improvement Programs

Producers need wheat cultivars adapted to the predominant climate conditions of the end of the rainy period. Having this in mind, EPAMIG (Agriculture and Livestock Research Institute of Minas Gerais) has been developing a wheat genetic improvement program since 1976, and the estimates of the genetic improvement established by the breeding programs could be useful to quantify their efficiency. This study focused on the quantification of the genetic progress achieved by these improvement programs of dryland wheat in the Brazilian-savanna between 1976 and 2005. The efficiency of these programs was evaluated based on grain yield data of VCU (Value for Cultivation and Use) trials conducted at ten locations in the Minas Gerais State, Brazil. The mean estimated genetic progress for mean grain yield between 1976 and 2005 was 37 kg ha-1 year-1. The genetic yield gain in the study period indicates that the improvement programs of dryland wheat in the Brazilian-savanna are effective. Besides the marked contribution of genetic gain, the environmental and technological improvements were also relevant for the yield, accounting for 47.4% of the total progress in the period. The improvement programs of dryland wheat resulted in a genotype renovation rate of 35% over the years.

scholarly journals Agronomic Performance, Capsaicinoids, Polyphenols and Antioxidant Capacity in Genotypes of Habanero Pepper Grown in the Southeast of Coahuila, Mexico

Horticulturae ◽  
2021 ◽  
Vol 7 (10) ◽  
pp. 372
Author(s):  
Neymar Camposeco-Montejo ◽  
Antonio Flores-Naveda ◽  
Norma Ruiz-Torres ◽  
Perpetuo Álvarez-Vázquez ◽  
Guillermo Niño-Medina ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Bioactive Compounds ◽  
Genetic Improvement ◽  
Anthocyanin Content ◽  
Agronomic Performance ◽  
Improvement Program ◽  
Antioxidant Power ◽  
Seed Technology ◽  
Habanero Pepper ◽  
Improvement Programs

The genetic improvement program of the Seed Technology Training and Development Center works on the agronomic characterization and the content of bioactive compounds in eight genotypes of habanero pepper. The objective is to select genotypes with good agronomic performance that allow the generation of inbred lines to obtain hybrids. In this study, the agronomic performance and the content of bioactive compounds (capsaicinoids, polyphenols, and antioxidant capacity) were evaluated in eight genotypes of habanero pepper grown in the southeast of Coahuila, Mexico, identified as HNC-1, HNC-2, HNC-3, HNC-4, HNC-5, HNC-6, HNC-7, and HCC-8. The plants were grown in a greenhouse for 127 days, under a completely randomized design with four replications each. The results revealed that the yield (g∙plant−1) and number of fruits per plant did not show significant differences between genotypes. However, for the fruit length, the genotypes HCC-8, HNC-7, HNC-6, and HNC-5 stood out with over 40 mm, while in equatorial diameter of the fruit, HCC-8, HNC-4, and HNC-2 stood out with 26.45, 26.46, and 25.12 mm, respectively. The results of the chemical analyses allowed us to identify that HNC-5 and HNC-6 had the highest capsaicin concentration (931.38 and 959.77 mg∙kg−1), dihydrocapsaicin (434.95 and 445.89 mg∙kg−1), Scoville Heat Units greater than 210,000, total phenols (67.54 and 71.15 mg/100 g) and total flavonoids (34.21 and 38.29 mg/100 g), respectively. The HNC-1 and HNC-6 genotypes had the highest carotenoids concentration with 103.96 and 105.07 mg/100 g, and HCC-8 registered the highest anthocyanin content with 22.08 mg C3GE/100 g. The antioxidant capacities showed significant differences (p ≤ 0.05) between genotypes, with a range of 43.22 to 110.39 µmol TE/100 g, 72.37 to 186.56 µmol TE/100 g, and 191.41 to 244.98 µmol TE/100 g for the tests of DPPH (2,2-diphenyl-1-picrylhydrazyl), ABTS (2,2′azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)), and FRAP (ferric reducing antioxidant power). The results of this research will be used to select habanero pepper genotypes that can be used in genetic improvement programs to increase the productive potential and the content of bioactive compounds in the fruits to expand their applications in the food industry.

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