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Assefa GA, Teklue T, Hagazi M, Mezgebe G, Aregawi WG, Tesfaye AB. Goat flock abortion: a retrospective study at Abergelle Agricultural Research Center, Tigray, Ethiopia. BMC Vet Res 2024; 20:132. [PMID: 38566206 PMCID: PMC10985995 DOI: 10.1186/s12917-024-03986-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 03/21/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Small ruminants are the principal component of livestock production in Tigray region, Ethiopia. But their productivity is affected by various factors. According to farmers and expert observation, goat abortion is among the leading causes of production losses in Tanqua-Abergelle district. However, study findings that examine the extent of distribution and economic impact of abortion cases in goats in the district are scarce. This retrospective study investigated the occurrence of abortion and its associated risk factors in three goat breed types at Abergelle Agricultural Research Center goat breeding site over a seven year period. The study included a total of does above one year old, and data were collected from a casebook that was specifically prepared for abortion cases. A thorough follow up was conducted to identify abortion cases. Additionally, a community survey was conducted in selected villages where the research center is located. RESULTS The overall abortion proportion was 29.8% in the goat farm. Begait goat breeds had the highest abortion proportion (50.9%, CI 0.36-0.64) in 2015/16. Multivariate logistic regression analysis identified year, season, age and breed as major risk factors of abortion occurrence at flock level. Accordingly, the likelihood of goats experiencing abortion during the dry season (proportion = 34) was 1.87 times higher compared to those in the wet season (proportion = 22.8). Begait breeds had a higher incidence of abortion (proportion 37.5%, OR 4.87, CI 2.49-10.35) compared to other breeds. Age was negatively associated with abortion, suggesting that older goats (OR = 0.67) had a higher relative risk than younger goats (OR = 0.57). Moreover, the study noted a high incidence of abortion during the years 2014/15 to 2016/17 (proportion = 35.7-39.7). Within-breed analysis revealed that age and season were significant risk factors for Abergelle and Begait breeds, respectively by using a multivariate logistic regression analysis. A community survey indicated that 89.7% households responded their goats experienced abortion. CONCLUSIONS This study highlighted the high prevalence of goat abortion at Abergelle and identifies important risk factors associated with its occurrence. The findings can inform targeted interventions to reduce abortion rates and improve goat productivity in the district.
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Affiliation(s)
- Guash Abay Assefa
- Abergelle Agricultural Research Center, Tigray Agricultural Research Institute, Abi Adi, Tigray, Ethiopia.
| | - Teshale Teklue
- Mekelle Agricultural Research Center, Tigray Agricultural Research Institute, Mekelle, Tigray, Ethiopia
| | - Mebrahtom Hagazi
- Abergelle Agricultural Research Center, Tigray Agricultural Research Institute, Abi Adi, Tigray, Ethiopia
| | - Gebretnsae Mezgebe
- Abergelle Agricultural Research Center, Tigray Agricultural Research Institute, Abi Adi, Tigray, Ethiopia
| | - Weldegebrial G Aregawi
- Faculty of Veterinary Medicine, Department of Physiology, Infectiology and Public Health, Ghent University, Ghent, Belgium
| | - Adehanom Baraki Tesfaye
- Mekelle Agricultural Research Center, Tigray Agricultural Research Institute, Mekelle, Tigray, Ethiopia
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Gebreselase HB, Nigussie H, Wang C, Luo C. Genetic Diversity, Population Structure and Selection Signature in Begait Goats Revealed by Whole-Genome Sequencing. Animals (Basel) 2024; 14:307. [PMID: 38254476 PMCID: PMC10812714 DOI: 10.3390/ani14020307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/21/2023] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Goats belong to a group of animals called small ruminants and are critical sources of livelihood for rural people. Genomic sequencing can provide information ranging from basic knowledge about goat diversity and evolutionary processes that shape genomes to functional information about genes/genomic regions. In this study, we exploited a whole-genome sequencing data set to analyze the genetic diversity, population structure and selection signatures of 44 individuals belonging to 5 Ethiopian goat populations: 12 Aberegalle (AB), 5 Afar (AF), 11 Begait (BG), 12 Central highlands (CH) and 5 Meafure (MR) goats. Our results revealed the highest genetic diversity in the BG goat population compared to the other goat populations. The pairwise genetic differentiation (FST) among the populations varied and ranged from 0.011 to 0.182, with the closest pairwise value (0.003) observed between the AB and CH goats and a distant correlation (FST = 0.182) between the BG and AB goats, indicating low to moderate genetic differentiation. Phylogenetic tree, ADMIXTURE and principal component analyses revealed a classification of the five Ethiopian goat breeds in accordance with their geographic distribution. We also found three top genomic regions that were detected under selection on chromosomes 2, 5 and 13. Moreover, this study identified different candidate genes related to milk characteristics (GLYCAM1 and SRC), carcass (ZNF385B, BMP-7, PDE1B, PPP1R1A, FTO and MYOT) and adaptive and immune response genes (MAPK13, MAPK14, SCN7A, IL12A, EST1 DEFB116 and DEFB119). In conclusion, this information could be helpful for understanding the genetic diversity and population structure and selection scanning of these important indigenous goats for future genetic improvement and/or as an intervention mechanism.
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Affiliation(s)
- Haile Berihulay Gebreselase
- State Key Laboratory of Swine and Poultry Breeding Industry Guangdong Key Laboratory of Animal Breeding and Nutrition Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
- Department of Biotechnology, College of Natural and Computational Science, Aksum University, Aksum 1010, Tigray, Ethiopia
| | | | - Changfa Wang
- Agricultural Science and Engineering School, Liaocheng University, Liaocheng 252000, China;
| | - Chenglong Luo
- State Key Laboratory of Swine and Poultry Breeding Industry Guangdong Key Laboratory of Animal Breeding and Nutrition Institute of Animal Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
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Badjibassa A, Ouédraogo D, Burger PA, Rosen BD, Van Tassell CP, Sölkner J, Soudré A. Participatory investigation of goat farmers' breeding practices, trait preference, and selection criteria in Burkina Faso. Trop Anim Health Prod 2024; 56:35. [PMID: 38189997 DOI: 10.1007/s11250-023-03869-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 12/07/2023] [Indexed: 01/09/2024]
Abstract
The community-based breeding program (CBBP) is an innovative approach recommended for genetic improvement and sustainable use of animal genetic resources in extensive farming systems. Successful implementation of this approach requires an understanding of the characteristics of production systems, breeding objectives, and farmers' trait preference. This study aimed to identify the selection criteria of goat farmers in rural areas of Burkina Faso and their potential implications in establishing CBBP. Following focus group discussions, a well-structured questionnaire was designed and administered to 372 randomly selected goat farmers in two different agro-ecological zones. A list of traits obtained during focus group discussions was provided to farmers individually, and they were asked to rank the ones they preferentially use to select breeding animals. Statistical tests were conducted to compare data between the two agro-ecological zones. The results showed that the average goat flock per household was higher (P < 0.05) in the Sudanian (15.68 ± 13.76), compared to the Sudano-Sahelian area (12.93 ± 13.3). Adult females were the dominant age-sex group in both areas. Reasons for culling, keeping breeding bucks, and castration practice were significantly different (P < 0.05) among agro-ecological zones. The most important common criterion for selection in the two zones was body size, coat color, and growth rate for the bucks and does, while fertility (0.06) parameters including twining ability (0.18), kidding frequency (0.11), and mothering ability (0.15) were furthermore considered for breeding does selection. These findings provide valuable insights for developing CBBPs tailored to goat production in the study areas.
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Affiliation(s)
- Akounda Badjibassa
- Unité de Formation et de Recherches Sciences et Technologie, Université Norbert ZONGO, BP 376, Koudougou, Burkina Faso
| | - Dominique Ouédraogo
- Centre Universitaire de Ziniaré, Université Joseph KI-ZERBO, 03 BP 7021, Ouagadougou 03, Burkina Faso
| | - Pamela Anna Burger
- Research Institute of Wildlife Ecology, University of Veterinary Medicine Vienna, Savoyenstrasse 1, 1160, Vienna, Austria
| | - Benjamin D Rosen
- United States Department of Agriculture, Animal Genomics and Improvement Laboratory, 10300 Baltimore Ave, Beltsville, MD, 20705, USA
| | - Curtis P Van Tassell
- United States Department of Agriculture, Animal Genomics and Improvement Laboratory, 10300 Baltimore Ave, Beltsville, MD, 20705, USA
| | - Johann Sölkner
- Division of Livestock Sciences, Department of Sustainable Agricultural Systems, University of Natural Resources and Life Sciences Vienna, Gregor-Mendel Strasse, 1180, Vienna, Austria
| | - Albert Soudré
- Unité de Formation et de Recherches Sciences et Technologie, Université Norbert ZONGO, BP 376, Koudougou, Burkina Faso.
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Belayhun T, Getachew T, Mustefa A, Engdawork A, Sinke S, Melesse A. Farming practices and breeding objectives identification of farmer in north shoa and south wello zones of Amhara region. Heliyon 2023; 9:e20207. [PMID: 37809873 PMCID: PMC10559977 DOI: 10.1016/j.heliyon.2023.e20207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 09/07/2023] [Accepted: 09/13/2023] [Indexed: 10/10/2023] Open
Abstract
The study aims at assessing the production systems and identifying the traits preferred by farmers in the study areas to establish community-based breeding and sustainable utilization programs. The study was conducted in the four purposively selected districts of North Shoa and South Wello zones of Amhara region (Merehabete, Wereillu, Moretena Jiru and Mojaena Wedera). A total of 120(30 farmers from each district) purposively selected farmers participated in their own flock ranking experiment. Furthermore, 216 (i.e., 54 farmers from each district) were interviewed about their goat production systems and trait preferences to be improved. The chi-square test was used to analyze qualitative data, and analysis of variance was used to analyze quantitative data generated by the survey. For the rank data, indexes were calculated using Microsoft Excel 2010. Income was the main objective of goat rearing in all the study areas. Doe has a larger proportion than other flock structures in all the study areas. Mostly, the age of castration was above one year in all the study areas. The breeding buck selection criteria were growth, shape, size, and color. Body size, litter size, and mothering ability were identified as important traits in all study areas. Early selling of fast-buck kids is practiced in all study areas for their immediate cash. This results in the use of poor-performing bucks for breeding and may result in negative selection. To address such issues, it is critical to create and implement a community-based breeding program that takes into account body size, litter size, mothering capacity, puberty age, and longevity.
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Affiliation(s)
- Teklewold Belayhun
- Ethiopian Biodiversity Institute Addis Ababa, Ethiopia, P. O. Box. 30726
| | - Tesfaye Getachew
- The International Center for Agriculture Research in the Dry Areas (ICARDA), Addis Ababa, Ethiopia
| | - Amine Mustefa
- Ethiopian Biodiversity Institute Addis Ababa, Ethiopia, P. O. Box. 30726
| | - Aweke Engdawork
- Ethiopian Biodiversity Institute Addis Ababa, Ethiopia, P. O. Box. 30726
| | - Seble Sinke
- Ethiopian Biodiversity Institute Addis Ababa, Ethiopia, P. O. Box. 30726
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Arenas-Báez P, Torres-Hernández G, Castillo-Hernández G, Hernández-Rodríguez M, Sánchez-Gutiérrez RA, Vargas-López S, González-Maldonado J, Domínguez-Martínez PA, Granados-Rivera LD, Maldonado-Jáquez JA. Coat Color in Local Goats: Influence on Environmental Adaptation and Productivity, and Use as a Selection Criterion. BIOLOGY 2023; 12:929. [PMID: 37508360 PMCID: PMC10376610 DOI: 10.3390/biology12070929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 06/16/2023] [Accepted: 06/27/2023] [Indexed: 07/30/2023]
Abstract
This paper aims to review, systematically synthesize, and analyze fragmented information about the importance of coat color in local goats and its relationship with productivity and other important traits. Topics on current research on color expression are addressed, the relationship that has as a mechanism of environmental adaptation, its relationship with the production of meat, milk, and derivates, and the economic value of this characteristic. The use of this attribute as a tool to establish selection criteria in breeding programs based on results reported in the scientific literature is significant, particularly for low-income production systems, where the implementation of classic genetic improvement schemes is limited due to the lack of productive information, which is distinctive of extensive marginal or low scaled production systems around the world.
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Affiliation(s)
- Pablo Arenas-Báez
- Unidad Regional Universitaria de Zonas Áridas, Universidad Autónoma Chapingo, Bermejillo, Durango 35230, Mexico
| | | | - Gabriela Castillo-Hernández
- Colegio de Postgraduados, Campus Montecillo, Montecillo, Texcoco 56264, Mexico
- Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli 54714, Mexico
| | | | - Ricardo Alonso Sánchez-Gutiérrez
- Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Campo Experimental Zacatecas, Calera, Zacatecas 98500, Mexico
| | | | - Juan González-Maldonado
- Instituto de Ciencias Agrícolas, Universidad Autónoma de Baja California, Mexicali 21750, Mexico
| | - Pablo Alfredo Domínguez-Martínez
- Colegio de Postgraduados, Campus Montecillo, Montecillo, Texcoco 56264, Mexico
- Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Campo Experimental Valle del Guadiana, Durango 34170, Mexico
| | - Lorenzo Danilo Granados-Rivera
- Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Campo Experimental Genera Terán, General Terán 67400, Mexico
| | - Jorge Alonso Maldonado-Jáquez
- Colegio de Postgraduados, Campus Montecillo, Montecillo, Texcoco 56264, Mexico
- Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Campo Experimental La Laguna, Matamoros 27440, Mexico
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Yang X, Wang W, Zhang D, Li X, Zhang Y, Zhao Y, Zhao L, Wang J, Xu D, Cheng J, Li W, Zhou B, Lin C, Zeng X, Zhai R, Ma Z, Liu J, Cui P, Zhang X. Genetic polymorphism of the ovine MAP3K5 gene and its association with body size traits in Hu sheep of China. Arch Anim Breed 2023. [DOI: 10.5194/aab-66-71-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
Abstract. As an excellent local sheep breed in China, Hu sheep have the
characteristics of producing more lambs and good motherhood. The purpose of
this study was to identify the polymorphism of the mitogen-activated protein
kinase 5 (MAP3K5) gene and determine whether it was associated with the body size
traits (body height, body length, chest circumference, and cannon
circumference) in Hu sheep. The polymorphism of MAP3K5 was identified by using PCR
amplification, followed by Sanger sequencing, and KASPar (Kompetitive Allele Specific PCR) technology was used for genotyping subsequently. The results of the association analysis showed
that MAP3K5 (g.205261 A > G) was significantly associated with body
height at 80, 100, 140, 160, and 180 d; body length at 80 and 160 d;
chest circumference at 100, 140, 160, and 180 d; and cannon circumference at
100 and 120 d, respectively. The results of qRT-PCR showed that the
expression level of MAP3K5 in the heart was significantly higher (P < 0.05)
than in the other 10 tissues. In summary, the MAP3K5 mutation loci may be used as
a candidate molecular marker for the body size traits of Hu sheep.
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Maswana M, Mugwabana TJ, Tyasi TL. Evaluation of breeding practices and morphological characterization of donkeys in Blouberg Local Municipality, Limpopo province: Implication for the design of community-based breeding programme. PLoS One 2022; 17:e0278400. [PMID: 36516165 PMCID: PMC9750015 DOI: 10.1371/journal.pone.0278400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 11/15/2022] [Indexed: 12/15/2022] Open
Abstract
Identification of livestock farmers' breeding practices and morphological characterization of livestock are the important first steps to the successful implementation of any breeding programme. Community-based breeding programme (CBBP) has gained attention as a promising method for the genetic improvement of livestock but lacks information on donkey breeding. The study was conducted to identify donkey farmers' breeding practices and donkey morphological characterization in three purposely selected villages (Thorne, Archibalt and Genau) located in Blouberg Local Municipality, Limpopo province of South Africa. Questionnaire survey method was used to collect the data from twenty-one donkey farmers while body weight and seventeen morphological traits were measured for the morphological characterization from seventy-four donkeys. Descriptive statistics and index values were computed to describe donkey breeding practices. Chi-square statistics were used to compare categorical variables among villages. General Linear Model procedure was used to compare morphological characteristics of donkeys among villages. The results revealed that there was no statistical different (P>0.05) observed on socio-economic characteristics of donkey farmers except on education level (P<0.05) among villages. Purpose of keeping donkeys, type of donkey breed kept, donkey coat colours, mating systems, reasons for culling, mating seasons and selection criterions were not significantly different (P>0.05) among villages. The most common trait preferences of donkey farmers among the surveyed villages were body size and growth rate in breeding males while in breeding females were body size, twining ability and mothering ability. The results indicated that in all the eighteen measured traits only four showed a significant difference (P<0.05) among the villages and some were significantly correlated with body weight (P<0.05). The results of this study will serves as basis for the development and implementation of CBBPs for donkey farmers at Blouberg Local Municipality of South Africa.
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Affiliation(s)
- Masixole Maswana
- Department of Agricultural Economics and Animal Production, School of Agricultural and Environmental Sciences, University of Limpopo, Limpopo, South Africa
| | - Thinawanga Joseph Mugwabana
- Department of Agricultural Economics and Animal Production, School of Agricultural and Environmental Sciences, University of Limpopo, Limpopo, South Africa
| | - Thobela Louis Tyasi
- Department of Agricultural Economics and Animal Production, School of Agricultural and Environmental Sciences, University of Limpopo, Limpopo, South Africa
- * E-mail:
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A community-based intervention approach to control disease outbreaks and climate-related deaths in communally raised goat kids in the Eastern Cape Province, South Africa. Trop Anim Health Prod 2022; 54:140. [PMID: 35318543 PMCID: PMC8940788 DOI: 10.1007/s11250-022-03143-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 03/14/2022] [Indexed: 10/24/2022]
Abstract
A community-based intervention project was conducted, from April 2017 to March 2019, on 512 kids born from flocks of 30 purposively selected households located in ten villages within Alice district of the Eastern Cape Province, South Africa. The study aimed to examine the effectiveness of combined efforts from the research team and farmers to control disease outbreaks and climate change-related deaths. A systematic dosing and fortnight dipping schedule was part of the intervention efforts made by the research team as well as supplying feed to pregnant and lactating does. Proper housing shelters were constructed and practicing hygiene measures were implemented. Veterinary assistance and medication were availed whenever there was a sick kid. Diseases and climate-related deaths were diagnosed based on clinical signs, laboratory results and relevant necropsy records. The current intervention program resulted to a decline in kid mortality rate (56.17% to 22.38%). Consistent access to veterinary services reduced the prevalence of Infectious diseases in year-2 (6.38%) as opposed to year-1 (14.89%). Climatic factors (11.92 vs 2.89%) became less prevalent due to better housing infrastructure while parasitic-related health problems showed a similar trend (9.79% vs 1.81%) after implementing a systematic dosing plan and fortnight dipping schedule. Death due to mechanical (7.66% vs 3.97%), reproductive (5.53% vs 3.25%) and nutritional (6.38% vs 2.53%)-related health problems also showed a slight decline. Even though the mortality rate was still above 20%, the documented improvement in kids' survival rate implies that the approach was a moderate success. An in-depth analysis with regard to affordability and effectiveness should be conducted to ensure consistent support.
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Breeding practices and trait preferences of goat keepers at Lepelle-Nkumpi Local Municipality, South Africa: implication for the design of breeding programmes. Trop Anim Health Prod 2022; 54:68. [PMID: 35044543 PMCID: PMC8770375 DOI: 10.1007/s11250-022-03078-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 01/10/2022] [Indexed: 11/26/2022]
Abstract
Identification of breeding practices and trait preferences by livestock keepers for the selection of breeding animals to be parents of the next generations is the crucial step to the successful implementation of community-based breeding program (CBBPs). The study aimed to detect breeding practices and trait preferences by farmers at Lepelle-Nkumpi Local Municipality, South Africa to determine their relevance in establishing a CBBP. A well-structured questionnaire was designed and administered to 183 randomly selected goat keepers from four villages. Chi-square statistics were used to compare categorical variables among villages. Socio-economic factors and reasons for keeping goats were not significantly different (P > 0.05) between the four villages. Methods of controlling mating, reasons for not controlling mating, keeping breeding bucks, source of breeding bucks, reasons for culling, and culling methods were significantly different (P < 0.05) among villages. The most common trait preferences of goat keepers among the surveyed villages were twinning ability, mothering ability, and body size in breeding does, while in breeding bucks were mating ability, growth rate, and body size. The results from this study are useful for designing CBBPs for goat production in the communal areas of Lepelle-Nkumpi Local Municipality.
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Musarandega R, Nyakura M, Machekano R, Pattinson R, Munjanja SP. Causes of maternal mortality in Sub-Saharan Africa: A systematic review of studies published from 2015 to 2020. J Glob Health 2021; 11:04048. [PMID: 34737857 PMCID: PMC8542378 DOI: 10.7189/jogh.11.04048] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Background Maternal deaths remain high in Sub-Saharan Africa (SSA) and their causes of maternal death must be analysed frequently in this region to guide interventions. Methods We conducted a systematic review of studies published from 2015 to 2020 that reported the causes of maternal deaths in 57 SSA countries. The objective was to identify the leading causes of maternal deaths using the international classification of disease - 10th revision, for maternal mortality (ICD-MM). We searched PubMed, WorldCat Discovery Libraries Worldwide (including Medline, Web of Science, LISTA and CNHAL databases), and Google Scholar databases and citations, using the search words "maternal mortality", "maternal death", "pregnancy-related death", "reproductive age mortality" and "causes" as MeSH terms or keywords. The last date of search from all databases was 21 May 2021. We included original research articles published in English and excluded articles that mentioned SSA country names without study results for those countries, studies that reported death from a single cause or assigned causes of death using computer models or incompletely broke down the causes of death. We exported, de-duplicated and screened the searches electronically in EndNote version 20. We selected the final articles by reading the titles, abstracts and full texts. Two authors searched the articles and assessed the risk of bias using a tool adapted from Montoya and others. Data from the articles were extracted onto an Excel worksheet and the deaths classified into ICD-MM groups. Proportions were calculated with 95% confidence intervals and compared for deaths attributed to each cause and ICD-MM group. We compared the results with WHO and Global Burden of Disease (GDB) estimates. Results We identified 38 studies that reported 11 427 maternal and four incidental deaths. Twenty-one of the third-eight studies were retrospective record reviews. The leading causes of death (proportions and 95% confidence intervals (CI)) were obstetric hemorrhage: 28.8% (95% CI = 26.5%-31.2%), hypertensive disorders in pregnancy: 22.1% (95% CI = 19.9%-24.2%), non-obstetric complications: 18.8% (95% CI = 16.4%-21.2%) and pregnancy-related infections: 11.5% (95% CI = 9.8%-13.2%). The studies reported few deaths of unknown/undetermined and incidental causes. Conclusions Limitations of this review were the failure to access more data from government reports, but the study results compared well with WHO and GDB estimates. Obstetric hemorrhage, hypertensive disorders in pregnancy, non-obstetric complications, and pregnancy-related infections are the leading causes of maternal deaths in SSA. However, deaths from incidental causes are likely under-reported in this region. SSA countries must continue to invest in health information systems that collect and publishes comprehensive, quality, maternal death causes data. A publicly accessible repository of data sets and government reports for causes of maternal death will be helpful in future reviews. This review received no specific funding and was not registered.
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Affiliation(s)
- Reuben Musarandega
- School of Health Systems and Public Health, University of Pretoria, South Africa.,Department of Obstetrics and Gynaecology, Victoria Falls Hospital, Zimbabwe
| | - Michael Nyakura
- Biostatistics and Epidemiology Department, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Rhoderick Machekano
- Research Centre for Maternal, Fetal, Newborn & Child Health Care Strategies, University of Pretoria, South Africa
| | - Robert Pattinson
- Unit of Obstetrics and Gynaecology, Faculty of Medical and Health Sciences, University of Zimbabwe, Harare, Zimbabwe
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Sheriff O, Alemayehu K, Haile A. Phenotypic ranking experiments in identifying breeding objective traits of smallholder farmers in northwestern Ethiopia. PLoS One 2021; 16:e0248779. [PMID: 33765002 PMCID: PMC7993801 DOI: 10.1371/journal.pone.0248779] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/04/2021] [Indexed: 12/02/2022] Open
Abstract
We executed two live animal ranking experiments, own-flock and group-animal ranking, to identify the breeding objectives of Arab and Oromo goat keepers in northwestern Ethiopia as a preliminary step towards designing sustainable breeding programs for two goat populations. In the own-flock ranking experiment, a total of 147 households, out of which 46 were Arab and 101 were Oromo goat keepers that live in semi-arid and sub-humid agroecologies respectively, were visited at their homesteads and were asked to choose their first best, second best, third best and the most inferior does from their own flock. The reasons of ranking and life history of the does (age, previous production and reproduction information) were inquired and recorded; live body weight and some linear body measurements were taken. In the group-animal ranking experiment, 12 breeding does and 12 breeding bucks from Arab goats and the same number of animals from Oromo goats were randomly selected. Life history of selected does and bucks (age, birth type, libido and temperament) were inquired from the owners. The selected animals were randomly grouped into four in Arab goats (three animals per group) and the same was applied in Oromo goats. Twelve farmers for Arab goats and the same number of farmers for Oromo goats who have not known the experimental animals were invited to do the ranking. Each person ranked the three animals in each group as 1st, 2nd and 3rd, giving reasons of ranking. After a first round of ranking, s/he was then provided with the history of each individual animal and asked whether s/he would consider re-ranking them. This procedure was continued eight times until a person covered all groups of does and bucks. It was found out that in own-flock ranking experiment, keepers focus on productive, reproductive and behavioral traits (such as body size, mothering ability, twinning rate, kidding interval and temperament) while in group-animal ranking experiment, there was a general tendency to focus on observable physical traits like coat color, body size and body conformation. Simultaneous use of both own-flock and group-animal ranking experiments is advisable to identify breeding objective traits in production systems where record keeping is absent.
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Affiliation(s)
- Oumer Sheriff
- Department of Animal Science, Assosa University, Assosa, Ethiopia
- Department of Animal Production and Technology, Bahir Dar University, Bahir Dar, Ethiopia
- Biotechnology Research Institute, Bahir Dar University, Bahir Dar, Ethiopia
- * E-mail:
| | - Kefyalew Alemayehu
- Department of Animal Production and Technology, Bahir Dar University, Bahir Dar, Ethiopia
- Biotechnology Research Institute, Bahir Dar University, Bahir Dar, Ethiopia
| | - Aynalem Haile
- Resilient Agricultural Livelihood Systems Program (RALSP), International Center for Agricultural Research in the Dry Areas (ICARDA), Addis Ababa, Ethiopia
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Review of Huang-huai sheep, a new multiparous mutton sheep breed first identified in China. Trop Anim Health Prod 2020; 53:35. [PMID: 33230646 PMCID: PMC7683451 DOI: 10.1007/s11250-020-02453-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 10/15/2020] [Indexed: 12/24/2022]
Abstract
Huang-huai sheep are a new multiparous mutton sheep breed that has been cultivated by domestic scientific research institutes, governments, and sheep farms in China. Huang-huai sheep were bred using Dorper sheep as a sire and Small-tailed Han sheep as a dam. The breeding of Huang-huai sheep started in 2003, and three stages have been carried out: crossbreeding innovation, fixation in a two-way-crossbred closed flock, and herd propagation. A pilot test of Huang-huai sheep was conducted on 6 sheep farms from 2017 to 2018, and hereditary properties and production performance were evaluated in 2019. Huang-huai sheep were identified on site by the National Livestock and Poultry Resources Committee of China in December 2019 and approved as a new multiparous mutton sheep breed in China. The genetic distance showed that Huang-huai sheep are most closely related to Dorper sheep, Luxi black-headed sheep, and Small-tailed Han sheep, but the genetic distances are subspecies (0.02–0.20) each other. The body weights of adult Huang-huai sheep are 98.1 ± 5.2 kg (♂) and 71.7 ± 3.5 kg (♀), and those of 6-month-old Huang-huai sheep are 58.50 ± 6.55 kg (♂) and 52.45 ± 5.67 kg (♀). The slaughter rates of 6-month-old sheep are 56.02 ± 1.25% (♂) and 53.19 ± 1.19% (♀). The estrus cycle of Huang-huai sheep is 19.32 ± 2.8 days, the first estrus cycle occurs at 168 ± 12 days, the annual lambing rate of ewes is 252.82% ± 10.69%, the survival rate of lambs is 95.79 ± 0.95%, and the number of weaned lambs per ewe per year is 2.38 ± 0.14. The growth performance, carcass quality, and reproductive performance of Huang-huai sheep have been improved, resulting in considerable economic and social benefits and broader market prospects. This breed represents a new multiparous mutton sheep breed adapted for industrial sheep farms in China.
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de Aguiar AL, da Silva RR, Alves SM, da Silva LP, de Morais OR, Lobo RNB. Breeding objectives and selection criteria of a participatory community-based breeding programme of goats and sheep. Trop Anim Health Prod 2020; 52:1933-1943. [PMID: 31965413 DOI: 10.1007/s11250-020-02209-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 01/11/2020] [Indexed: 10/25/2022]
Abstract
The absence of formal markets and the large variability of genetic groups and production systems of goats and sheep in developing countries hinder the implementation of traditional breeding programmes. Community-based breeding programmes (CBBP) for these species have been shown to be effective in these countries. In these programmes, the definition of the objectives and criteria of selection is done in a participatory way, which takes into account the desires and needs of the local farmers. We aimed to define the objectives and criteria of a CBBP for goats and sheep in the Inhamuns region, Ceará, Brazil, using a participatory rural appraisal (PRA). This methodology, which consist in an approach that aims to incorporate the knowledge and opinions of rural people in the planning and management of development projects and programmes, was performed in seven districts of two towns of the region (Tauá and Parambu). One hundred twenty-two farmer families participated in the survey. The PRA was able to provide important information, and its results showed that breeders of this region keep flocks of goats and sheep for social, economic and cultural benefits. In order of importance, the main objectives for goat farming were personal fulfilment (PERF), food source for family (FSF), income generation (INCG), savings (SAV) and cultural/family traditions (CULT), while for sheep farming were CULT, FSF, SAV, PERF and INCG. Disease resistance (RDI), adaptability (ADP), fertility (FERT), growth rate (GRA), host resistance of worms (HRW), body conformation (BC), temperament (TEM), longevity (LONG), body size (BSIZ), age at first kidding (AFK) and milk yield (MIY) were the main selection criteria that farmers use for goats. The most important selection criteria used for selecting sheep were ADP, RDI, HRW, GRA, FERT, LONG, BC, BS and age at first lambing. According to these objectives and criteria, the CBBP must consider the adaptation of the animals to the climate and management conditions of the region, the resistance to diseases and productive performance.
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Affiliation(s)
- A L de Aguiar
- Departamento de Zootecnia, Universidade Federal do Ceará, Av. Mister Hull, S/N, Fortaleza, CE, 60455-760, Brazil
| | - R R da Silva
- Departamento de Zootecnia, Universidade Federal do Ceará, Av. Mister Hull, S/N, Fortaleza, CE, 60455-760, Brazil
| | - S M Alves
- Departamento de Zootecnia, Universidade Federal do Ceará, Av. Mister Hull, S/N, Fortaleza, CE, 60455-760, Brazil
| | - L P da Silva
- Departamento de Zootecnia, Universidade Federal do Ceará, Av. Mister Hull, S/N, Fortaleza, CE, 60455-760, Brazil
| | - O R de Morais
- Embrapa Caprinos e Ovinos/CNPq PQ Scholarship, Estrada Sobral/Groaíras, km 04, Caixa postal 71, Sobral, CE, 62010-970, Brazil
| | - R N B Lobo
- Departamento de Zootecnia, Universidade Federal do Ceará, Av. Mister Hull, S/N, Fortaleza, CE, 60455-760, Brazil. .,Embrapa Caprinos e Ovinos/CNPq PQ Scholarship, Estrada Sobral/Groaíras, km 04, Caixa postal 71, Sobral, CE, 62010-970, Brazil.
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Production systems and breeding practices of Arab and Oromo goat keepers in northwestern Ethiopia: implications for community-based breeding programs. Trop Anim Health Prod 2019; 52:1467-1478. [PMID: 31807983 DOI: 10.1007/s11250-019-02150-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 11/13/2019] [Indexed: 10/25/2022]
Abstract
We conducted a household survey in the semi-arid and sub-humid parts of Benishangul Gumuz region in northwestern Ethiopia to better understand and describe production systems and breeding practices of Arab and Oromo goat keepers. Multistage random sampling was employed to select peasant associations, while probability proportional to size sampling was used to select households. Data were collected from 249 households, out of which 86 were Arab and 163 were Oromo goat keepers that live in semi-arid and sub-humid agroecologies, respectively. Personal observations, focus group discussions, and structured questionnaires were used to collect data. Data were analyzed using SPSS and results were presented using descriptive statistics and indices. Ninety-two percent of Arab and 86% of Oromo goat keepers indicated crop and livestock production as their main occupation. Goats were kept for a variety of purposes. Income generation, meat, and savings were the highest priorities. The average flock size owned by Arab goat keepers (12.5 ± 4.0) was significantly (p < 0.01) higher than that of Oromo goat keepers (9.9 ± 3.8). Breeding does constituted the largest average flock size followed by kids, young does, and young bucks. Body size, twining ability, coat color, and kid growth were considered important in selecting breeding does, while body size, growth rate, coat color, and libido were the most preferred traits for buck selection. Mating was predominantly uncontrolled mainly due to communal grazing lands. Castration of bucks was significantly (p < 0.01) more frequent in Arab goat keepers than in Oromo goat keepers. Arab goats have better reproductive performance than Oromo goats. On average, female goats in the study areas gave first births at the age of 1.2 years, kidded every 7.5 months, stayed on reproduction for about 7.6 years, and produced 10.7 kids per lifetime. Compared with Arab goats, Oromo goats had significantly (p < 0.01) higher average age at first mating, age at first kidding, kidding interval, and reproductive lifetime but produced lower average number of kids per lifetime. Nucleus breeding schemes are recommended to optimize the limited available resources in the study areas. A single nucleus could serve both Arab and Oromo goat keepers. In conclusion, breeding programs implemented in the study areas should consider the production systems and breeding practices of Arab and Oromo goat keepers appropriately.
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Berihulay H, Li Y, Gebrekidan B, Gebreselassie G, Liu X, Jiang L, Ma Y. Whole Genome Resequencing Reveals Selection Signatures Associated With Important Traits in Ethiopian Indigenous Goat Populations. Front Genet 2019; 10:1190. [PMID: 31850061 PMCID: PMC6892828 DOI: 10.3389/fgene.2019.01190] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 10/28/2019] [Indexed: 12/12/2022] Open
Abstract
Ethiopia is considered as the main gateway for the introduction of livestock species, including goat, to the African continent. Ethiopian goats are characterized by their unique adaptive ability, and different physical characteristics in terms of morphology, body size, coat colors, and other important traits. The comparative population genomic analysis provides useful genomic information associated with important traits. Whole-genome resequencing of 44 Ethiopian indigenous goats produced 16 million single-nucleotide polymorphisms (SNPs) as well as 123,577 insertions and deletions. Specifically, 11,137,576, 10,760,581, 10,833,847, 12,229,657 and 10,749,996 putative SNPs were detected in Abergelle, Afar, Begait, Central Highland and Meafure goat populations, respectively. In this study, we used population differentiation (FST) and pooled heterozygosity (HP) Cbased approaches. From the FST analysis, we identified 480 outlier windows. The HP approach detected 108 and 205 outlier windows for Abergelle, and Begait, respectively. About 11 and 5 genes under selective signals were common for both approaches that were associated with important traits. After genome annotation, we found 41 Gene ontology (GO) terms (12 in biological processes, 8 in cellular components and 11 in the molecular function) and 10 Kyoto Encyclopedia of Genes and Genomes pathways. Several of the candidate genes are involved in the reproduction, body weight, fatty acids, and disease related traits. Our investigation contributes to deliver valuable genetic information and paves the way to design conservation strategy, breed management, genetic improvement, and utilization programs. The genomic resources generated in the study will offer an opportunity for further investigations.
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Affiliation(s)
- Haile Berihulay
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China.,College of Veterinary Science, Mekelle University, Mekelle, Ethiopia
| | - Yefang Li
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Berihu Gebrekidan
- College of Veterinary Science, Mekelle University, Mekelle, Ethiopia
| | | | - Xuexue Liu
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lin Jiang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yuehui Ma
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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Yakubu A, Dahloum L, Gimba EG. Smallholder cattle farmers' breeding practices and trait preferences in a tropical Guinea savanna agro-ecological zone. Trop Anim Health Prod 2019; 51:1497-1506. [PMID: 30762154 DOI: 10.1007/s11250-019-01836-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 01/27/2019] [Indexed: 10/27/2022]
Abstract
The present study was embarked upon to determine the breeding practices and choice of selection and breeding traits of cattle farmers in Nasarawa State and the Federal Capital Territory (FCT), Abuja, Nigeria. A total of 180 smallholder cattle herders were randomly sampled. However, analysis of data was restricted to 144 herders (81 from FCT and 63 from Nasarawa State). Primary data were collected through individual structured questionnaire administration. Chi-square (χ2) statistics were used to compare categorical variables. Arithmetic means of continuous variables between locations were tested using T test. Rank means were also calculated for within- and between-location comparisons of the preference traits. Chi-square automatic interaction detection (CHAID) algorithm was used to determine the influence of socio-economic parameters on the traits of preference. Access to credit, personal savings, and type of landholding were significantly (P < 0.05) different between the two locations with higher values recorded for farmers in FCT. However, farmers in Nasarawa State had significantly higher land expanse (2.28 ± 0.19 versus 1.29 ± 0.09). The production objectives were rated similar between locations. The number of foundation stock differed significantly between farmers in the two locations with higher mean recorded in Nasarawa (7.37 ± 0.37) compared to FCT (5.18 ± 0.19). However, mean herd size was higher (34.60 ± 2.58 versus 27.63 ± 2.00; P < 0.05) in FCT than Nasarawa. Among the productivity indices, only average age at first parturition and average calving interval were significantly (P < 0.05) influenced by location. Within the FCT, calving interval was the trait of utmost importance in selecting the breeding stock, followed by milk yield, disease resistance, and body size. In Nasarawa State, calving interval, disease resistance, milk yield, body size, and survival were ranked similarly (P >0.05). Across the two locations, body conformation (P < 0.05) and calving interval (P < 0.01) were more highly rated in FCT than Nasarawa State, while heat tolerance was less rated (P < 0.05) in the former. All the traits of preference were influenced by socio-economic factors, and could be exploited in future breeding plans to boost cattle production. A new livestock census in the study area is also advocated to reflect the current reality as regards cattle distribution.
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Affiliation(s)
- A Yakubu
- Department of Animal Science, Faculty of Agriculture, Nasarawa State University, Keffi, Shabu-Lafia Campus, P.M.B. 135, Lafia, 950101, Nigeria.
| | - L Dahloum
- Laboratoire de Physiologie Animale Appliquée, Université Abdelhamid Ibn Badis, 27000, Mostaganem, Algeria
| | - E G Gimba
- Department of Animal Science, Faculty of Agriculture, Nasarawa State University, Keffi, Shabu-Lafia Campus, P.M.B. 135, Lafia, 950101, Nigeria
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