Production, reproduction and some adaptation characteristics of Boran cattle breed under changing climate: A systematic review and meta-analysis

Introduction Climate change affects livestock production and productivity, which could threaten livestock-based food security in pastoral and agro-pastoral production systems of the tropics and sub-tropics. Boran cattle breed is one of the hardiest Zebu cattle reared by Borana Oromo pastoralists for milk and meat production. However, there is limited comprensive information on production, reproduction and adaption traits of the Boran cattle in Ethiopia. Thus, this paper aims to compile the main production, reproduction and some adaptation traits of Boran cattle based on systematic review and meta-analysis of peer reviewed published and unpublished literature. Methodology A combination of systematic review and meta-analysis based on PRISMA guideline was employed. Accordingly, out of 646 recorded articles identified through database searching, 64 were found to be eligible for production, reproduction and adaptation characteristics of the Boran cattle, 28 articles were included in qualitative systematic review while 36 articles were used for quantitative meta-analysis. Result The Boran cattle breed has the ability to survive, produce and reproduce under high ambient temperature, utilize low quality forage resources, and resist water shortage or long watering intervals and tick infestations. The review revealed that the breed employs various adaptation responses (morphological, physiological, biochemical, metabolic, cellular and molecular responses) to cope with harsh environmental conditions including climate change, rangeland degradation, seasonal feed and water shortages and high incidences of tick infestations. The meta-analysis using a random-effects model allowed provision of pooled estimates of heritability and genetic correlations for reproduction and production traits, which could be used to solve genetic prediction equations under a population level in purebred Boran cattle. In addition, heritability and genetic-correlation estimates found in the present study suggest that there is high genetic variability for most traits in Boran cattle, and that genetic progress is possible for all studied traits in this breed. Conclusion The Boran cattle breed has the ability to survive, produce and reproduce under high ambient temperature, utilize low quality forage resources, and resist water shortage or long watering intervals and tick infestations. However, currently there are several challenges such as recurrent droughts, pasture deterioration and lack of systematic selection and breeding programs that play to undermine the realization of the potential of the breed. Thus, we recommend systematic selection for enhancing the reproductive and production performances without compromising the adaptation traits of the breed coupled with improved management of rangelands.

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Production, Reproduction and Adaptation characteristics of Boran cattle breed under changing climate: A systematic review and meta-analysis

10.1101/2020.12.18.423410 ◽

2020 ◽

Author(s):

Merga Bayssa ◽

Sintayehu Yigrem ◽

Simret Betsa ◽

Adugna Tolera

Keyword(s):

Climate Change ◽

Systematic Review ◽

Meta Analysis ◽

Genetic Correlations ◽

Cattle Breed ◽

Livestock Production ◽

Meat Production ◽

Zebu Cattle ◽

Improvement Programs ◽

Breed Improvement

AbstractIntroductionClimate change has devastating effects on livestock production and productivity, which could threaten livestock-based food security in pastoral and agro-pastoral production systems of the tropics and sub-tropics. Hence, to sustain livestock production in an environment challenged by climate change, the animals must have the ability to survive and produce under extreme conditions. Boran cattle breed is one of the hardiest Zebu cattle reared by Borana Oromo pastoralists for milk and meat production. This paper aims to compile the main production, reproduction and adaptation traits of Boran cattle based on systematic review amd meta-analysis of peer reviewed and published articles on the subject.MethodologyCombination of systematic review and meta-analysis based on PRISMA guideline was employed. Accordingly, out of 646 recorded articles identified through database searching, 64 were found to be eligible for production, reproduction and adaptation characteristics of the Boran cattle, twenty-eight articles were included in qualitative systematic review while 36 articles were used for quantitative meta-analysis.ResultBoran cattle have diversity of adaptation (morphological, physiological, biochemical, metabolic, cellular and molecular) responses to the effects of climate change induced challenges - notably high temperature and solar radiation, rangeland degradation, seasonal feed and water shortages and high incidences of tropical diseases. Meta-analysis using a random-effects model showed estimates of heritability and genetic correlations for reproduction and production traits. In addition, heritability and genetic-correlation estimates found in the present study suggest that there is high genetic variability for most traits in Boran cattle, and that genetic improvement is possible for all studied traits in this breed.ConclusionThe review revealed that Boran cattle exhibit better reproduction, production and adaption potentials as compared to other indigenous zebu cattle breeds in Ethiopia under low-land, poor pasture and water conditions. On other hand, the breed is currently challenged by adverse effects of climate change and other management factors such as high rate of genetic dilution, reduced rangeland productivity, lack of organized breed improvement programs and discriminate selection of gene pool. Thus, we recommend strategic breed improvement and genetic conservation program of Boran cattle breed in collaboration with Borana pastoralists through proper quantification of important traits and estimation of the pure Boran cattle population while controlled cross breeding strategy could be used in urban and peri-urban areas for maximum utilization of adapataion and production pottential of this breed.

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Modification of the association between high ambient temperature and health by urban microclimate indicators: A systematic review and meta-analysis

Environmental Research ◽

10.1016/j.envres.2017.11.004 ◽

2018 ◽

Vol 161 ◽

pp. 168-180 ◽

Cited By ~ 30

Author(s):

Leah H. Schinasi ◽

Tarik Benmarhnia ◽

Anneclaire J. De Roos

Keyword(s):

Systematic Review ◽

Ambient Temperature ◽

Meta Analysis ◽

High Ambient Temperature ◽

Urban Microclimate

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Association between ambient temperature and heat waves with mortality in South Asia: Systematic review and meta-analysis

Environment International ◽

10.1016/j.envint.2020.106170 ◽

2021 ◽

Vol 146 ◽

pp. 106170

Author(s):

Asya Dimitrova ◽

Vijendra Ingole ◽

Xavier Basagaña ◽

Otavio Ranzani ◽

Carles Milà ◽

...

Keyword(s):

Systematic Review ◽

Ambient Temperature ◽

South Asia ◽

Heat Waves ◽

Meta Analysis

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Peer Review #1 of "Ambient temperature and cardiovascular mortality: a systematic review and meta-analysis (v0.2)"

10.7287/peerj.3574v0.2/reviews/1 ◽

2017 ◽

Author(s):

H Lin

Keyword(s):

Systematic Review ◽

Ambient Temperature ◽

Peer Review ◽

Cardiovascular Mortality ◽

Meta Analysis

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Water, sanitation and hygiene risk factors for the transmission of cholera in a changing climate: using a systematic review to develop a causal process diagram

Journal of Water and Health ◽

10.2166/wh.2020.088 ◽

2020 ◽

Vol 18 (2) ◽

pp. 145-158

Author(s):

Natalia Jones ◽

Maha Bouzid ◽

Roger Few ◽

Paul Hunter ◽

Iain Lake

Keyword(s):

Climate Change ◽

Systematic Review ◽

Rainwater Harvesting ◽

Risk Mitigation ◽

Meta Analysis ◽

Diarrhoeal Disease ◽

Health Impact ◽

Causal Process ◽

Change Dynamics ◽

Sanitation And Hygiene

Abstract Cholera is a severe diarrhoeal disease affecting vulnerable communities. A long-term solution to cholera transmission is improved access to and uptake of water, sanitation and hygiene (WASH). Climate change threatens WASH. A systematic review and meta-analysis determined five overarching WASH factors incorporating 17 specific WASH factors associated with cholera transmission, focussing upon community cases. Eight WASH factors showed lower odds and six showed higher odds for cholera transmission. These results were combined with findings in the climate change and WASH literature, to propose a health impact pathway illustrating potential routes through which climate change dynamics (e.g. drought, flooding) impact on WASH and cholera transmission. A causal process diagram visualising links between climate change dynamics, WASH factors, and cholera transmission was developed. Climate change dynamics can potentially affect multiple WASH factors (e.g. drought-induced reductions in handwashing and rainwater use). Multiple climate change dynamics can influence WASH factors (e.g. flooding and sea-level rise affect piped water usage). The influence of climate change dynamics on WASH factors can be negative or positive for cholera transmission (e.g. drought could increase pathogen desiccation but reduce rainwater harvesting). Identifying risk pathways helps policymakers focus on cholera risk mitigation, now and in the future.

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Peer Review #3 of "Ambient temperature and cardiovascular mortality: a systematic review and meta-analysis (v0.2)"

10.7287/peerj.3574v0.2/reviews/3 ◽

2017 ◽

Author(s):

W Goggins

Keyword(s):

Systematic Review ◽

Ambient Temperature ◽

Peer Review ◽

Cardiovascular Mortality ◽

Meta Analysis

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Association of Short-Term Exposure to Meteorological Factors and Risk of Hand, Foot, and Mouth Disease: A Systematic Review and Meta-Analysis

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17218017 ◽

2020 ◽

Vol 17 (21) ◽

pp. 8017

Author(s):

Zhihui Liu ◽

Yongna Meng ◽

Hao Xiang ◽

Yuanan Lu ◽

Suyang Liu

Keyword(s):

Risk Factors ◽

Systematic Review ◽

Relative Humidity ◽

Ambient Temperature ◽

Meteorological Factors ◽

Meta Analysis ◽

Foot And Mouth Disease ◽

Short Term ◽

Short Term Exposure ◽

Lag Model

(1) Background: Inconsistencies were observed in studies on the relationship between short-term exposure to meteorological factors and the risk of hand, foot, and mouth disease (HFMD). This systematic review and meta-analysis was aimed to assess the overall effects of meteorological factors on the incidence of HFMD to help clarify these inconsistencies and serve as a piece of evidence for policy makers to determine relevant risk factors. (2) Methods: Articles published as of 24 October 2020, were searched in the four databases, namely, PubMed, Web of Science, Embase, and MEDLINE. We applied a meta-analysis to assess the impact of ambient temperature, relative humidity, rainfall, wind speed, and sunshine duration on the incidence of HFMD. We conducted subgroup analyses by exposure metrics, exposure time resolution, regional climate, national income level, gender, and age as a way to seek the source of heterogeneity. (3) Results: Screening by the given inclusion and exclusion criteria, a total of 28 studies were included in the analysis. We observed that the incidence of HFMD based on the single-day lag model is significantly associated with ambient temperature, relative humidity, rainfall, and wind speed. In the cumulative lag model, ambient temperature and relative humidity significantly increased the incidence of HFMD as well. Subgroup analysis showed that extremely high temperature and relative humidity significantly increased the risk of HFMD. Temperate regions, high-income countries, and children under five years old are major risk factors for HFMD. (4) Conclusions: Our results suggest that various meteorological factors can increase the incidence of HFMD. Therefore, the general public, especially susceptible populations, should pay close attention to weather changes and take protective measures in advance.

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