Importance of naturalized breeds as a base for the formation of exotic sheep (Ovis aries) breeds in tropical altitude regions

Oliveira, Joyce Azambuja de; Egito, A. A. do; Crispim, Bruno do Amaral; Vargas, Fernando Miranda de; Seno, Leonardo de Oliveira; Barufatti, Alexéia

doi:10.1590/1678-4685-gmb-2019-0054

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…The analysis of mtDNA D-loop sequences in local sheep breeds on Java Island showed a high genetic diversity between breeds (0.02153) and within breeds (0.00623-0.03834), except for JFT (0.00113), which belonged to the medium category (Table -2). The values obtained in this study are similar to the genetic diversity within breeds of ten Iranian indigenous breeds (0.00871-0.04762) [31], lower than five Egyptian sheep breeds (0.01433-0.03654) [32], Karayaka sheep (0.028-0.044) [33], and higher than Dorper sheep (0.0011) [34]. Nucleotide and HD of mtDNA are two important indices for assessing population polymorphism and genetic differentiation; the higher the HD, the higher the genetic diversity will be, and vice versa.…”

Section: Phylogenetic Relationshipsupporting

confidence: 83%

The genetic profiles and maternal origin of local sheep breeds on Java Island (Indonesia) based on complete mitochondrial DNA D-loop sequences

et al. 2020

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Background and Aim: Java Island is one of the islands in Indonesia which has local sheep breeds with specific characteristics and native development geography in certain regions. This study aimed to determine the genetic profiles and maternal origin of six local sheep breeds on Java Island. Materials and Methods: This study was conducted by identifying the profiles of complete mitochondrial DNA (mtDNA) displacement loop (D-loop) region sequences on a total of 22 individual in six local sheep breeds on Java Island, including Javanese thin-tailed (JTT), Javanese Fat-Tailed (JFT), Batur (BTR), Wonosobo (WSB), Garut (GRT), and Priangan (PRG) sheep. The D-loop region was amplified using specific primers, and the polymerase chain reaction (PCR) was performed. The PCR products were purified and sequenced. Results: The mtDNA D-loop analysis identified 21 haplotypes in the analyzed 22 animals with 123 polymorphic sites (V) consisting of 60 singleton variable sites (S) and 63 parsimony informative sites (P). Within all breeds tested, the haplotype diversity, the average number of pairwise differences (K), and nucleotide diversity (Pi) were 0.99567, 25.36364, and 0.02153, respectively. The genetic distance (D) within groups and between groups was 0.001-0.006 and 0.004-0.036, respectively. The phylogeny resulted in the presence of two haplogroups (Hap), which are 5 Hap A and 16 Hap B. All JTT, JFT, BTR, and WSB breeds were in the same cluster in Hap B, whereas GRT and PRG breeds were in clusters in both Hap A and Hap B. Conclusion: The high genetic diversity in six local sheep breeds on Java Island suggests that they originated from different genetic sources. JTT sheep have closer genetic relationships to JFT, BTR, and WSB sheep, and they are close to European sheep, whereas GRT sheep have closer genetic relationships to PRG sheep. Both are closer to Asian sheep than to European sheep.

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Section: Phylogenetic Relationshipsupporting

confidence: 83%

The genetic profiles and maternal origin of local sheep breeds on Java Island (Indonesia) based on complete mitochondrial DNA D-loop sequences

et al. 2020

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“…Reference genome file was downloaded from Ovis aries genome Ensembl Release-81 (ftp://ftp. ensembl.org/pub/release-81/fasta/ovis_aries/) (Oliveira et al, 2020). Index of the reference genome was created by Bowtie (v2.0.6) (Langmead et al, 2009) while pairedend clean reads were mapped to the reference genome by TopHat (v2.0.9) (Kim et al, 2013).…”

Section: Quality Control Sequence Alignment and Transcriptome Assemblymentioning

confidence: 99%

Effect of breeds on heat-evoked gene responses in sheep adipose tissue

2021

Turk J Zool

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Sheep is one of the ungulates and critical for animal husbandry development like on grassland, whereas there are few pieces of research about their heat responses to date. In the present study, we selected two sheep breeds consisting of Mongolian sheep with evolving cold resistibility and Dorper sheep specifically bred for heat tolerance to explore how the different breeds of sheep positively respond to heat conditions. Three Mongolian sheep and 3 Dorper sheep underwent 37 ℃ stress (2 hours per day) during 4weeks. The energy metabolism-associated adipose tissues of the experimental subjects were sampled, prepared and performed to RNA-seq following heat condition. Through the analysis and comparison of sequencing outcomes on such aspects as the quality control, sequence alignment and quantification, we obtained 236 annotated proteincoding genes as well as 98 long non-coding RNA (lncRNA) genes with expression differences. Following Gene Ontology (GO) term and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis measures, ten protein-coding genes were screened as active genes triggered by heat stress in adipose tissue in which candidates referred to DNAJA1, FABP1, HMOX1, NABP1, PNP, FNDC5, and PTGS2 of Mongolian sheep and PPP5C, PARP4, and SOD3 of Dorper sheep. The biological functions of the candidate genes were severally targeted to heat shock protein binding, oxidation resistance, DNA repair, and brown adipocyte differentiation. Taking these findings as a basis, we hope to promote comprehending on heat-tolerance of sheep and provide some inspiration to molecular stockbreeding.

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“…Locally adapted sheep are being studied by many research institutions around the world, especially because those adapted breeds can be more resistant and productive than foreing breeds. And promote their conservation as a genetic resource, and their insertion in meat productive systems (Vargas et al, 2015;Oliveira et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Discrimination study between the carcass and non-carcass components for interaction between gender, age, and production system in indigenous sheep

Burin¹,

Monteschio²,

Leonardo³

et al. 2021

Semina: Ciênc. Agrár.

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The objective of this work was to evaluate the yields, morphometric measures, carcass, and non-carcass components, and carcass regional and tissue composition of an indigenous sheep (Pantaneiro) of different physiological stages (gender, age, system production. Thirty sheep, eleven lambs, nine wethers, and ten cull ewes were used. The lambs were finished in feedlots, the wethers were maintained on pastures and supplementation, and the cull ewes were maintained on an extensive pasture system with mineral salt ad libitum. Slaughter ages were defined to simulate the most representative products and farming systems. Animals were slaughtered and classified as non- castrated lambs, wethers, and cull ewes. The criteria to slaughter lambs and wethers were the body condition, which ranged from 2.5 to 3.0. Cull ewes were slaughtered based on negative pregnancy diagnosis, regardless of their body condition, which ranged from 4.0 to 4.5. All animals were slaughtered after 16-hours of fasting (solids). The ewes presented the greatest fat thickness, differing significantly from the lambs. The morphometric measures were higher in ewes and lambs. The muscle to fat ratio of the animal’s cuts from different physiological stages presented no significant differences. The indigenous Pantaneiro sheep have good potential for meat production regardless of their physiological stages. The ewes stood out, presenting carcasses with good performance considering their potential and longer permanence in the herd due to their reproductive function.

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Importance of naturalized breeds as a base for the formation of exotic sheep (Ovis aries) breeds in tropical altitude regions

Cited by 6 publications

References 18 publications

The genetic profiles and maternal origin of local sheep breeds on Java Island (Indonesia) based on complete mitochondrial DNA D-loop sequences

The genetic profiles and maternal origin of local sheep breeds on Java Island (Indonesia) based on complete mitochondrial DNA D-loop sequences

Effect of breeds on heat-evoked gene responses in sheep adipose tissue

Discrimination study between the carcass and non-carcass components for interaction between gender, age, and production system in indigenous sheep

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