scholarly journals Capitalizing on the Potential of South African Indigenous Beef Cattle Breeds: A Review

2021 ◽  
Vol 13 (8) ◽  
pp. 4388
Author(s):  
Este Van Marle-Köster ◽  
Carina Visser ◽  
Judith Sealy ◽  
Laurent Frantz
Keyword(s):  
South African ◽  
Small Scale ◽  
Scale Production ◽  
Production Environment ◽  
Adaptive Potential ◽  
Indigenous Cattle ◽  
Farming Communities ◽  
Cattle Breeds ◽  
Livestock Sector ◽  
Beef Cattle Breeds

Cattle populations arrived in Southern Africa almost 2000 years ago, brought by farming communities migrating southwards. For centuries, cattle have been an integral component of livestock production to meet the animal protein needs of a growing population and they are also important in many cultural and religious events, as repositories of wealth and signifiers of social status. Selection within these cattle populations led to the development of breeds such as the Nguni, Afrikaner and Drakensberger that are well adapted to the local production environment. Genetic information has been generated for most of these populations, providing new insights into their ancestry and indicating moderate levels of diversity and relatively low inbreeding. Indigenous cattle breeds are present in both the well-developed commercial sector as well as the developing South African livestock sector. These breeds have been included in several research studies, mostly focusing on their production and adaptive potential. Genetic improvement of the local cattle populations and breeds, which are often more resilient to local environmental conditions, has the potential to improve the productivity of the small-scale production developing sector and contribute to the alleviation of poverty.

scholarly journals Genetic Improvement Strategy of Indigenous Cattle Breeds: Effect of Cattle Crossbreeding Program in Production Performances

2020 ◽  
pp. 23-40
Author(s):  
Teweldemedhn Mekonnen ◽  
Yosef Tadesse ◽  
Selam Meseret
Keyword(s):  
Birth Weight ◽  
Dairy Cattle ◽  
Milk Yield ◽  
Milk Fat ◽  
Production Performance ◽  
Stress Factors ◽  
Small Scale ◽  
Improvement Strategy ◽  
Indigenous Cattle ◽  
Cattle Breeds

The aim of the review is to summarize the fragmented production performance information on the effects of cattle crossbreeding in different parts of the globe. Most studies indicated that cattle crossbreeding practices conducted under extensive management system for small scale dairy farms is attractive because the optimum requirement (50-62.5%) of exotic cattle blood level inheritance was maintained. However, most developing countries do not use systematic crossbreeding programme. For example, dairy cattle crossbreeding programme in Ethiopia lacks clear breeding policy regarding the breed type to be used and the level of exotic blood inheritance across different agro-ecology and production system. Heterosis is an essential advantage of crossbreeding and maximum heterosis is realized in the first cross (F1) of distinctly different breeds. The purpose of crossbreeding in beef cattle is partly to combine breed differences and partly to make use of heterosis to improve production. Heterosis is highest in F1 generation compared to F2, F3 and F4 crossbred generations. Therefore, terminal crossbreeding is very important in livestock production particularly in beef production. Holstein Friesian dairy cattle produce 40-60% lowered milk yield under tropical and subtropical conditions compared to temperate conditions, and this is due to the exposure of the animals to the different stress factors in the tropical and subtropical conditions. The review also revealed that crossbreeding programme has significant effect in birth weight because all F1 crossbred calves have highest birth weight compared to the purebred calves of Zebu, Sanga and Zenga breeds. Heterosis in a sound crossbreeding program could increase productivity in the beef cow herd by as much as 26% over a comparable straight breeding program. In general, crossbreeding in tropical countries is undertaken to combine superior hardiness, heat tolerance, disease tolerance and/or resistance and environmental adaptability of indigenous cattle with superior milk yield and faster growth rates of exotic temperate breeds. Crossbreeding is one tool to minimize the negative impacts of inbreeding depression in livestock sector. Through crossbreeding there is a chance to have highly productive and adapted breeds. Crossbreeding also affects milk fat and protein compositions of purebred cattle. However, if crossbreeding is indiscriminate and uncontrolled, it may result in poor production performance. Furthermore, a number of studies indicated that indiscriminate and uncontrolled crossbreeding is a major threat to sustainable conservation and utilization of indigenous cattle breeds. Therefore, crossbreeding must be introduced in controlled farms.

scholarly journals Genome-wide identification of breed-informative single-nucleotide polymorphisms in three South African indigenous cattle breeds

1970 ◽  
Vol 46 (3) ◽  
pp. 302-312
Author(s):  
A.A. Zwane ◽  
A. Maiwashe ◽  
M.L. Makgahlela ◽  
A. Choudhury ◽  
J.F. Taylor ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Single Nucleotide Polymorphisms ◽  
South African ◽  
Principal Component ◽  
Nucleotide Polymorphisms ◽  
Indigenous Cattle ◽  
Single Nucleotide ◽  
Cattle Breeds ◽  
Polymorphic Snps ◽  
Genome Wide

Access to genotyping assays enables the identification of informative markers that discriminate between cattle breeds. Identification of these markers can assist in breed assignment, improvement and conservation. The objective of this study was to identify breed informative markers to discriminate between three South African indigenous cattle breeds. Data from BovineSNP50 and GeneSeek Genomic Profiler (GGP-80K) assays were generated for Afrikaner, Drakensberger and Nguni, and were analysed for their genetic differentiation. Hereford and Angus were included as outgroups. Breeds were differentiated using principal component analysis (PCA). Single-nucleotide polymorphisms (SNPs) within the breeds were determined when minor allele frequency (MAF) was ≥ 0.05. Breed-specific SNPs were identified using Reynolds Fst and extended Lewontin and Krakauer's (FLK) statistics. These SNPs were validated using three African breeds, namely N’Dama, Kuri and Zebu from Madagascar. PCA discriminated among the breeds. A larger number of polymorphic SNPs was detected in Drakensberger (73%) than in Afrikaner (56%) and Nguni (65%). No substantial numbers of informative SNPs (Fst ≥ 0.6) were identified among indigenous breeds. Eleven SNPs were validated as discriminating the indigenous breeds from other African breeds. This is because the SNPs on BovineSNP50 and GGP-80K assays were ascertained as being common in European taurine breeds. Lower MAF and SNP informativeness observed in this study limits the application of these assays in breed assignment, and could have other implications for genome-wide studies in South African indigenous breeds. Sequencing should therefore be considered to discover new SNPs that are common among indigenous South African breeds and also SNPs that discriminate among these indigenous breeds.

scholarly journals Adoption and Promotion of Resilient Crops for Climate Risk Mitigation and Import Substitution: A Case Analysis of Cassava for South African Agriculture

2021 ◽  
Vol 5 ◽  
Author(s):  
Assefa B. Amelework ◽  
Michael W. Bairu ◽  
Obakeng Maema ◽  
Sonja L. Venter ◽  
Mark Laing
Keyword(s):  
South Africa ◽  
Food Security ◽  
South African ◽  
Import Substitution ◽  
Scale Up ◽  
Small Scale ◽  
Local Market ◽  
Scale Production ◽  
Cassava Production ◽  
Small Scale Farmers

Cassava is an important starchy root crop grown globally in tropical and subtropical regions. The ability of cassava to withstand difficult growing conditions and long-term storability underground makes it a resilient crop, contributing to food security. Historically, small-scale farmers have grown cassava as a minor crop in the far north-eastern part of the country. However, there is an initiative to scale up cassava production, with two discrete areas of interest: large-scale production for industrial starch, and expanding its footprint as a food security crop for small-scale farmers, especially in the context of climate change. In this scoping study, production, processing and marketing data for cassava were accessed from the FAO and US Commercial trade databases. Other domestic market and demand analysis case studies were also explored. There is no cassava data available for South Africa. The study indicated that South Africa imports more than 66,000 tons of starch annually, of which 33% is cassava starch, showing the availability of a local market. The potential of cassava for the South African economy is discussed. Significant industrial opportunities exist for the production and use of cassava in South Africa. However, the realization of these opportunities will depend on the reliable supply of good quality cassava roots. However, the lack of a well-established cassava research program, and a lack of an existing value chain for the industrial scale cassava production and processing are barriers to the development of cassava industry in South Africa. As the initial step to the development of a successful cassava industry, high potential germplasm is imported, characterized and bred for local conditions to ensure the sustainable primary production of cassava. Subsequently, industrial value chains will need to be developed as the optimization of the breeding and agronomy of the crop are completed, and yield potentials are quantified in the different regions of the country.

scholarly journals Processing, Characteristics and Composition of Umqombothi (a South African Traditional Beer)

Processes ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1451
Author(s):  
Edwin Hlangwani ◽  
Janet Adeyinka Adebiyi ◽  
Wesley Doorsamy ◽  
Oluwafemi Ayodeji Adebo
Keyword(s):  
South African ◽  
Social Economic ◽  
Raw Materials ◽  
Global Scale ◽  
Small Scale ◽  
Scale Production ◽  
Global Competitiveness ◽  
Hygiene Practices ◽  
Production And Consumption ◽  
Processing Steps

Traditional beers, such as palm wine, kombucha and others, are notable beverages consumed all over the globe. Such beverages historically contribute to food security on a global scale. Umqombothi is a South African traditional beer nutritionally packed with minerals, amino acids, B-group vitamins and much-needed calories. As a result, the production and consumption of this traditional beverage has been an integral part of South African’s social, economic and cultural prosperity. Unfortunately, difficulties in bioprocessing operations have limited its availability to household and small-scale production. It is at these micro-production scales that poor hygiene practices and the use of hazardous additives and contaminated raw materials continue to increase, posing serious health risks to the unassuming consumer. This study provides an overview of the processing steps and underlying techniques involved in the production of umqombothi, while highlighting the challenges as well as future developments needed to further improve its quality and global competitiveness with other alcoholic products.

Validation of the POLLED Celtic variant in South African Bonsmara and Drakensberger beef cattle breeds

2018 ◽  
Vol 217 ◽  
pp. 136-139 ◽  
Author(s):  
R. Grobler ◽  
C. Visser ◽  
A. Capitan ◽  
E. van Marle-Köster
Keyword(s):  
Beef Cattle ◽  
South African ◽  
Cattle Breeds ◽  
Beef Cattle Breeds

scholarly journals Freeze–thaw characterization process to minimize aggregation and enable drug product manufacturing of protein based therapeutics

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Keethkumar Jain ◽  
Nazila Salamat-Miller ◽  
Katherine Taylor
Keyword(s):  
Protein Aggregation ◽  
Drug Product ◽  
Scale Model ◽  
Small Scale ◽  
Clear Understanding ◽  
Scale Production ◽  
Production Environment ◽  
Formulation Development ◽  
Freeze Thaw ◽  
Product Manufacturing

AbstractPhysical instabilities of proteins in the form of protein aggregation continue to be a major challenge in the development of protein drug candidates. Aggregation can occur during different stages of product lifecycle such as freeze–thaw, manufacturing, shipping, and storage, and can potentially delay commercialization of candidates. A lack of clear understanding of the underlying mechanism(s) behind protein aggregation and the potential immunogenic reactions renders the presence of aggregates in biotherapeutic products undesirable. Understanding and minimizing aggregation can potentially reduce immunogenic responses and make protein therapeutics safer. Therefore, it is imperative to identify, understand, and control aggregation during early formulation development and develop reliable and orthogonal analytical methodologies to detect and monitor levels of aggregation. Freezing and thawing are typical steps involved in the manufacturing of drug product and could result in complex physical and chemical changes, which in turn could potentially cause protein aggregation. This study provides a systematic approach in understanding and selecting the ideal freeze–thaw conditions for manufacturing of protein-based therapeutics. It identifies the importance of balancing different excipients with an overall goal of sufficiently reducing or eliminating aggregation and developing a stable and scalable formulation. The results demonstrated that the freeze–thaw damage of mAb-1 in aqueous solutions was significantly reduced by identification of optimal freeze–thaw conditions using first a small-scale model with subsequent at-scale verifications. The work provides a framework for successful transfer of drug product manufacturing process from small-scale to the manufacturing scale production environment especially for molecules that are susceptible to freeze–thaw induced degradations.

AGRICULTURAL PRODUCTION OF CA DONG PEOPLE IN RESETTLEMENT AREA OF TRANH RIVER HYDROPOWER NUMBER 2: CURRENT SITUATION AND IMPACT FACTORS

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Bùi Thị Bích Lan
Keyword(s):  
Social Relations ◽  
Agricultural Production ◽  
Large Scale ◽  
Transition Process ◽  
Impact Factors ◽  
Small Scale ◽  
Scale Production ◽  
Technical Application ◽  
Production Models ◽  
Role Of The State

In Vietnam, the construction of hydropower projects has contributed significantly in the cause of industrialization and modernization of the country. The place where hydropower projects are built is mostly inhabited by ethnic minorities - communities that rely primarily on land, a very important source of livelihood security. In the context of the lack of common productive land in resettlement areas, the orientation for agricultural production is to promote indigenous knowledge combined with increasing scientific and technical application; shifting from small-scale production practices to large-scale commodity production. However, the research results of this article show that many obstacles in the transition process are being posed such as limitations on natural resources, traditional production thinking or the suitability and effectiveness of scientific - technical application models. When agricultural production does not ensure food security, a number of implications for people’s lives are increasingly evident, such as poverty, preserving cultural identity, social relations and resource protection. Since then, it has set the role of the State in researching and building appropriate agricultural production models to exploit local strengths and ensure sustainability.

Transforming the Rural Agricultural Landscape Through Groundwater Optimisation: Exploring A Chinese-South African Partnership

2018 ◽  
Vol 15 (1) ◽  
Author(s):  
Nirmala Dorasamy ◽  
Olayemi Bakre
Keyword(s):  
South Africa ◽  
South African ◽  
Agricultural Landscape ◽  
Agricultural Practices ◽  
Subsistence Farming ◽  
Water Shortages ◽  
Subsistence Farmers ◽  
Farming Communities ◽  
Standards Of Living ◽  
Kwazulu Natal

The majority of the South African rural populace is directly or indirectly engaged in agricultural practices to earn a livelihood. However, impediments such as climate change, water shortages, and inadequacy of institutional support have undermined these once thriving subsistence farming communities. Furthermore, poor leadership in hydrology, coupled with a lack of depth in skills at all government levels to facilitate the understanding of the importance of groundwater, has made it near impossible for subsistence farmers to benefit optimally from groundwater. The 2012 drought experienced in South Africa paralysed several subsistence farming communities in KwaZulu-Natal. To revamp subsistence farming and assist these farmers across South Africa, the Department of Water and Sanitation launched interventions, but despite the enormous resources expended, indicators (e.g. unsustainable farming practices, poor crop yield, pitiable living conditions, and poor standards of living) provide evidence that these interventions have not yielded the desired results. This paper seeks to suggest practicable interventions aimed at reducing the vulnerability of subsistence farmers in KwaZulu-Natal. The study pursued a qualitative approach in that it solicited the views of experts on groundwater and in related fields to gain an in-depth perspective. Some of the core challenges undermining the sustainability and growth of subsistence farming in the study area were found to be the inadequacy of experts on groundwater, water shortages, institutional deficiencies, lack of political will, and lack of coordination among stakeholders. Pragmatic recommendations are made to address these challenges, among other things to encourage a South African-Chinese partnership in the hydrology sector.

Study of Diabetic Mellitus and Knowledge of Lotion Foot Care on the Community

2018 ◽  
Vol 9 (3) ◽  
Author(s):  
Hariyadi DM ◽  
Athiyah U ◽  
Hendradi E ◽  
Rosita N ◽  
Erawati T ◽  
...  
Keyword(s):  
Blood Glucose ◽  
T Test ◽  
Small Scale ◽  
Scale Production ◽  
Foot Care ◽  
Diabetic Mellitus ◽  
Glucose Levels ◽  
Blood Glucose Levels ◽  
Before And After ◽  
History Of

The prevention of Diabetic Mellitus (DM) and its complications is the main aim of this study, in addition to the training of lotion foot care application and the development of small scale industry. The research team delivered knowledge in the form of training on Diabetic Mellitus, healthy food, treatment and prevention of complications, and small-scale production of cosmetic products. The aim of this study was to determine the correlation between training on diabetic and lotion foot care application as preventive measures against diabetic complications on the patient's blood glucose levels in the community of residents in Banyuurip Jaya, Surabaya. It was expected from this training that the knowledge of the residents increases and people living with diabetic undergo lifestyle changes and therefore blood sugar levels can be controlled. The parameters measured in this research were blood glucose levels, the anti diabetic drug types consumed, and compliance on diabetics. This study used the data taken from 60 patients with DM over a period of one month. Questionnaires and log books was used to retrieve data and changes in blood glucose levels in diabetic patients. The results showed the demographic data of patients with type 2 diabetic of 85% female and 15% male, with the range of patients aged of 61-70 years of 46.67% and had history of diabetic (90%). The history of drugs consumed by respondents was anti diabetic drugs such as metformin (40%), glimepiride (33.37%) and insulin (6.67%). In addition, the increased knowledge of DM patients after being given the training compared to before training was shown in several questions in the questionnaire. A statistical analysis using t-test analyzed a correlation between training provided in order to enhance understanding of the patient, as well as correlation with blood glucose levels. A paired T-test showed that there was a relationship between the knowledge of trainees before and after training (p less than 0.05). An interesting result was that there was no relationship between blood glucose levels before and after training provided (p> 0.05).

Exploring the South African Government Communication on Land Expropriation without Compensation

2020 ◽  
Vol 72 (1-3) ◽  
Author(s):  
Lungisani Moyo
Keyword(s):  
South Africa ◽  
Food Security ◽  
South African ◽  
Small Scale ◽  
South African Government ◽  
Eastern Cape ◽  
The South ◽  
Land Expropriation ◽  
African Government ◽  
Government Communication

ABSTRACT This paper used qualitative methodology to explore the South African government communication and land expropriation without compensation and its effects on food security using Alice town located in the Eastern Cape Province South Africa as its case study. This was done to allow the participants to give their perceptions on the role of government communication on land expropriation without compensation and its effects on South African food security. In this paper, a total population of 30 comprising of 26 small scale farmers in rural Alice and 4 employees from the Department of Agriculture (Alice), Eastern Cape, South Africa were interviewed to get their perception and views on government communications and land expropriation without compensation and its effects on South African food security. The findings of this paper revealed that the agricultural sector plays a vital role in the South African economy hence there is a great need to speed up transformation in the sector.

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