Suchergebnisse

Scrapie, the oldest prion disease of sheep, has two types: classical and atypical scrapie. It was determined that some nucleotide polymorphisms in the PrP coding gene have affected classical and atypical scrapie susceptibility. Consequently, EU member states have established breeding programs aiming to increase genetic resistance of their flocks to classical scrapie. These breeding programs have primarily been implemented in economically important breeds. Thus, we investigated classical and atypical scrapie related PrP genotypes of the Karacabey merino breed, which is of great economic importance in western regions of Turkey. In relation to classical scrapie, three alleles (ARR, ARQ, and VRQ) and five genotypes (ARR/ARR, ARR/ARQ, ARQ/ARQ, ARR/VRQ, and ARQ/VRQ) were identified. Frequencies were found to be 0.280, 0.677, and 0.043 for the alleles and 0.086, 0.376, 0.452, 0.011, and 0.075 for the genotypes, respectively. In terms of atypical scrapie, four alleles (ALRR, ALRQ, AFRQ, and VLRQ) and eight genotypes (ALRR/ALRR, ALRR/AFRQ, ALRR/ALRQ, ALRQ/AFRQ, ALRQ/ALRQ, VLRQ/ALRR, VLRQ/ALRQ, and VLRQ/AFRQ) were identified. Frequencies were found to be 0.272, 0.636, 0.049, and 0.043 for the alleles and 0.076, 0.033, 0.348, 0.043, 0.413, 0.011, 0.054, and 0.022 for the genotypes, respectively. Three nonsynonymous and two silent additional polymorphisms were also determined along with the PrP coding gene. ; General Directorate of Agricultural Research and Policies of Republic of Turkey Ministry of Food, Agriculture and LivestockGida Tarim Ve Hayvancilik Bakanligi ; This research was carried out at the Sheep Research Institute Bandirma, Balikesir, Turkey. Research was funded by the General Directorate of Agricultural Research and Policies of Republic of Turkey Ministry of Food, Agriculture and Livestock.

This study was conducted to investigate the growth hormone (GH; somatotropin-like) gene polymorphisms in 150 water buffalo (Bubalus bubalis) from different regions of Turkey. 404 bp long partial intron 4, exon 5, 3' UTR regions of the GH gene (also called GH/AluI locus) and 347 bp long exon-intron 3 and partial exon 4 regions of the GH gene (also called GH/MspI locus) were amplified, and their PCR products analyzed via DNA sequencing method. Seven genotypes due to twenty single nucleotide polymorphisms (SNP) and one deletion/insertion were identified in a 347 bp long region of the GH/MspI locus. A missense mutation from glycine to glutamate amino acid and four silent mutations in the serine, threonine, and asparagine amino acids were determined in the exon 3 region of the GH gene. Four genotypes due to eight SNP were identified in a 404 bp long region of the GH/AluI locus. A missense mutation from lysine to arginine amino acid and six silent mutations in Leucine, aspartate, histidine, lysine, arginine, and cysteine amino acids were revealed in the exon 5 region of the GH gene. The partial DNA sequence of the GH gene in water buffalos was reported, and these sequences were deposited at the NCBI Genbank database with the accession numbers MN266903-MN266909 and MN530973-MN530976. These SNP may have an effect on economic (such as body composition) and carcass traits, reproduction, and milk yield and content in water buffalo populations and may prove to be useful for water buffalo breeding. © 2020 All Rights Reserved ; AR.14.32, NKUBAP.00.24; Tarimsal Araştirmalar ve Politikalar Genel Müdürlüğü, Türkiye Cumhuriyeti Tarim Ve Orman Bakanliği: TAGEM ??AR -GE/ ?? ; This research was supported by the Scientific Research Projects Coordination Unit of Nam?k Kemal University, under project number NKUBAP.00.24.AR.14.32, and the Republic of Turkey Ministry of Agriculture and Forestry General Directorate of Agricultural Research and Policies, under project number TAGEM 13/AR-GE/29. ; This research was supported by the Scienti ...

The present study was aimed to investigate the genetic diversity among 17 Turkish water buffalo populations. A total of 837 individuals from 17 provincial populations were genotyped, using 20 microsatellites markers. The microsatellite markers analyzed were highly polymorphic with a mean number of alleles of (7.28) ranging from 6 (ILSTS005) to 17 (ETH003). The mean observed and expected heterozygosity values across all polymorphic loci in all studied buffalo populations were 0.61 and 0.70, respectively. Observed heterozygosity varied from 0.55 (Bursa (BUR)) to 0.70 (Muş (MUS)). It was lower than expected heterozygosity in most of the populations indicating a deviation from Hardy–Weinberg equilibrium. The overall value for the polymorphic information content of noted microsatellite loci was 0.655, indicating their suitability for genetic diversity analysis in buffalo. The mean FIS value was 0.091 and all loci were observed significantly deviated from Hardy–Weinberg Equilibrium (HWE), most likely based on non-random breeding. The 17 buffalo populations were genetically less diverse as indicated by a small mean FST value (0.032 ± 0.018). The analysis of molecular variance (AMOVA) analysis indicated that about 2% of the total genetic diversity was clarified by population distinctions and 88 percent corresponded to differences among individuals. The information produced by this study can be used to establish a base of national conservation and breeding strategy of water buffalo population in Turkey. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. ; Tarimsal Araştirmalar ve Politikalar Genel Müdürlüğü, Türkiye Cumhuriyeti Tarim Ve Orman Bakanliği: TAGEM/13/AR-GE/29 ; Funding: This research was funded by Republic of Turkey Ministry of Agriculture and Forestry General Directorate of Agricultural Research and Policies (TAGEM), grant number TAGEM/13/AR-GE/29, project leader Elif Geyik Kus¸.