Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation

McManus, Concepta; Hermuche, Potira Meirelles; Paiva, Samuel Rezende; Moraes, J. C. F.; Melo, Cristiano Barros de; Mendes, Clayton Quirino

doi:10.1186/2196-288x-1-3

Cited by 53 publications

(46 citation statements)

References 23 publications

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“…Brazil has more than 17 million sheep (IBGE 2013) and more than 60% of the flock can be classified as hair-sheep, being a majority distributed in the Northeast region (Hermuche et al, 2014;McManus et al, 2014). The Morada Nova hair sheep (Figure 1) is an important locally adapted breed from Brazil used for lamb production, which shows high prolificacy and good maternal ability (Facó et al 2008).…”

Section: Introductionmentioning

confidence: 97%

Application of genomic data to assist a community-based breeding program: A preliminary study of coat color genetics in Morada Nova sheep

et al. 2016

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Section: Introductionmentioning

confidence: 97%

Application of genomic data to assist a community-based breeding program: A preliminary study of coat color genetics in Morada Nova sheep

et al. 2016

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“…Brazilian Fat-tail shares a common ancestor with Morada Nova (Fig 6), which is expected as both are reared in similar regions (22). Brazilian Fat-tail probably resulted from crossbreeding Brazilian Somali and Afrikaner breeds (migration events), which are also fat-tailed breeds.…”

Section: Discussionmentioning

confidence: 64%

“…Both breeds represent unique genetic architecture in cluster analysis, forming an exclusive cluster from K=4 for Brazilian Somali and K=14 for Brazilian Fat-tail. These results may be related to the small number of animals remaining in each breed (22,23) and, consequently, the strong genetic drift suffered in both cases.…”

Section: Discussionmentioning

confidence: 99%

“…Brazilian Fat-tail are reared in the hottest climate with the lowest precipitation index and consequently with the highest temperature and humidity index between all sheep breeds reared in Brazil (22). This breed had the lowest number of flocks and the lowest distance from mid-point of breed occurrence (22). These previous findings with the unique genetic structure (K=4; Fig 5) observed in the present study highlights the demand for genetic conservation efforts for this breed.…”

Section: Discussionmentioning

confidence: 99%

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How to better conserve with genetic data: origin and population structure of Brazilian locally adapted hair sheep (Ovis aries) breeds

Paim¹,

Paiva

Toledo

et al. 2019

Preprint

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31Brazilian hair sheep constitute a genetic diversity hotspot of sheep breeds. These locally 32 adapted genetic resources developed in harsh environments of the Brazilian Northwest 33 (semi-arid) and maintained important traits for this region, such as parasite resistance, 34 heat tolerance and high pelt quality. Genotypes (50K SNP chip) from seven Brazilian 35 sheep breeds (5 hair and 2 coarse wool types) and 87 worldwide breeds were used to 36 verify population structure, admixture and genetic diversity, using PCA and 37 ADMIXTURE analyses. We constructed a phylogenetic tree and evaluated migration 38 events between genetic groups using TREEMIX software. Brazilian Somali, a fat-tailed 39 breed, was the unique breed with high relationship with East African breeds and formed 40 a distinct cluster from other Brazilian breeds. This breed seems to contribute to formation 41 of Santa Inês, Morada Nova and Brazilian Fat-tail breeds. Brazilian Blackbelly had a clear 42 relationship with Barbados Blackbelly, which appeared as another group. Other Brazilian 43 breeds seem to form a further genetic group with some recent admixtures. Morada Nova 44 remained as a separate group, not showing a strong relationship with European or African 45 breeds, only revealing a migration event from Sidaoun, an Algerian hair breed. Brazilian 46 Fat-tail and Morada Nova share a common ancestor, but the first received introgressions 47 from Brazilian Somali and Afrikaner breeds, explaining the fat-tail phenotype. Santa Inês 48 received strong contribution from Bergamasca and had an admixed origin with recent 49 introgressions from other breeds, mainly from Suffolk animals. In conclusion, Brazilian 50 Somali and Brazilian Fat-tail are the most endangered sheep genetic resources in Brazil.51 52 53 Cattle, sheep, goats and pigs were domesticated in the region from Central 54

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“…In Mato Grosso, there is a predominance of Santa Inês and crossbreed animals, which favor productivity under tropical conditions, considering the adaptability of these animals (Costa et al 2008;McManus et al 2013). In contrast, a negative aspect is the low domestic consumption.…”

Section: Discussionmentioning

confidence: 99%

Characterization of the sheep industry in the medium northern region of Mato Grosso, Brazil

Eckstein¹,

Bento²,

Mourão³

et al. 2017

Revista Brasileira De Ciência Veterinária

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ResumoNas últimas décadas o mercado brasileiro de carne ovina aumentou substancialmente, e o estado de Mato Grosso apresentou a maior taxa de crescimento do Brasil, apesar da falta de informações sobre os sistemas de produção nesta região. Este estudo teve como objetivo caracterizar os sistemas de produção de ovinos da região meio-norte do Mato Grosso, utilizando um questionário com perguntas qualitativas e quantitativas. Dentre as 40 propriedades avaliadas foram predominantes (82,5%; 33/40) rebanhos com menos de 100 animais, com exploração semi-intensiva, voltada para a produção de carne. A ovinocultura foi citada como atividade econômica secundária em 92,5% (37/40) dos rebanhos e, em 60,0% (24/40) das propriedades, os animais eram mantidos apenas para consumo familiar. O manejo sanitário deficiente resultou na ocorrência de diversas doenças, sendo os casos de miíases os mais citados (65,0%; 26/40). A ovinocultura possui grande potencial para o desenvolvimento em Mato Grosso. No entanto, a atividade ainda é negligenciada em muitos aspectos, incluindo a saúde animal.Palavras-chave: ovinocultura, perfil dos rebanhos, saúde animal. AbstractIn recent decades, the Brazilian market for sheep meat has increased substantially, and the State of Mato Grosso had the highest growth rate in Brazil. However, information about ovine production systems in this region is lacking. This study aimed to characterize productive systems of sheep in the medium northern region of Mato Grosso, by application of qualitative and quantitative questionnaires. Among 40 properties evaluated, herds there were predominately with fewer than 100 animals (82.5%, 33/40), with semi-intensive exploration focused on meat production. Livestock sheep was a secondary economic activity in 92.5% (37/40) of farms, and sheep were kept only for family consumption in 60.0% (24/40). Poor health management resulted in the occurrence of various diseases, and myiasis was the most frequently cited disease (65.0%, 26/40). Sheep farming has a great potential for development in Mato Grosso. However, the activity is neglected in many ways, including animal health.

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Geographical distribution of sheep breeds in Brazil and their relationship with climatic and environmental factors as risk classification for conservation

Abstract: Background: The aim of this study was to evaluate the distribution of sheep breeds in Brazil, correlate their occurrence with environmental factors and determine their risk for extinction.

Cited by 53 publications

References 23 publications

Application of genomic data to assist a community-based breeding program: A preliminary study of coat color genetics in Morada Nova sheep

Application of genomic data to assist a community-based breeding program: A preliminary study of coat color genetics in Morada Nova sheep

How to better conserve with genetic data: origin and population structure of Brazilian locally adapted hair sheep (Ovis aries) breeds

Characterization of the sheep industry in the medium northern region of Mato Grosso, Brazil

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