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The Japanese quail genome has received relatively little study. Despite significant interest in the search for QTL in poultry, particularly chickens, there has been little research devoted to the identification of QTL regions in Japanese quail. Studies by various researchers have led to the identification of QTLs for laying capacity, body weight, feed efficiency and growth in Japanese quail. Molecular monitoring has been conducted since 2004 in an experimental herd of Japanese quail selected for increased body weight, belonging to the Department of Genetics and Animal Breeding, Faculty of Animal Sciences, SGGW. Analysis of relationships between quantitative traits and genotype with regard to microsatellite sequences confirmed that a given allelic form usually occurred in birds with higher or lower values for these traits. In the 10th generation, carriers of some alleles of ADL0024, ADL0106, ADL0134, ADL0142, ADL0143, ADL0255, ADL0272, GUJ0001, GUJ0014, GUJ0052 and GUJ0087 had higher values for the traits analysed than birds which did not have these alleles in their genotype. Analysis of marker genotypes demonstrated that some alleles of ADL0024, ADL0134, ADL0142, ADL0143, ADL0255 and GUJ0001 were associated with increased body weight at 28 days of age, which was the basis for selection in the population investigated. These findings have enabled the genome of the Japanese quail to become better known and in the near future may lead to sequencing of its genome, thus contributing to a more comprehensive use of this species as an animal model in research.
A ban on cutting tail in dogs has been introduced in many countries. In order to exhibit on an official pedigree show a tailless or short-tailed dog, it’s owner must provide a statement confirming that the short tail is natural characteristic of his dog. The aim of this paper was to design a test to diagnose a C295G dominant mutation in T gene which is responsible for short-tail phenotype in 17 dog breeds. This mutation creates a BstEII restriction site. The molecular test designed is based on genomic DNA analysis. A fragment of T gene is amplified in polymerase chain reaction (PCR). Then, the PCR product is treated with restriction enzyme BstEII, and the analysis of restriction fragments is carried out in polyacrylamide gel. A genotype of 30 Polish Pembroke Welsh Corgi regarding T gene has been determined. Within the studied group of dogs, 10 heterozygotes and 20 recessive homozygotes have been found. No dominant homozygotes have been present.
Von Willebrand's disease (vWD), one of the most common congenital bleeding diatheses caused by a deficient or defective von Willebrand's factor (vWF), is found in different breeds of dogs. The objective of the study was to perform a preliminary analysis of the knowledge and awareness of von Willebrand's disease among dog breeders and owners in Poland. The online survey was addressed to dog breeders and owners, comprised 25 questions and was voluntary and anonymous. It was placed on 12 thematic Internet forums dedicated to different breeds of dogs. The respondents provided 231 answers, 76 of which were complete. The results of the survey indicate that the dog breeders and owners are highly interested in genetic tests and want more general access to scientific information. By their own admission, the dog owners and breeders have partly insufficient knowledge about vWD. Considerable gaps in their knowledge about other issues (including breeding work) were also evidenced. Being a contribution to the discussion about canine vWD, this article highlighted the need to improve the education of dog breeders and owners, and to make them aware of their role in canine health care.
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