Dermatophilosis is one of the major economically important diseases of cattle in Nigeria. Managing the condition has been very challenging and re-occurrence has been reported with moderate to high morbidity and mortality. The incidence and biochemical features of cattle with dermatophilosis was conducted in June to December 2016 across the four geopolitical zones of Oyo state, Nigeria. Clinical...

Zebu breeds play an important role in cattle production systems in Brazil. To assess the genetic variability from animals in the Herd Books of Nelore, Gir and Guzerat breeds, generation intervals, inbreeding, effective population size and parameters of gene origin (effective number of founders, ancestors and founder genomes) were calculated using pedigree records from 1938 to 1998. Breed subdiv...

The Brazilian cattle population is mainly composed of breeds of zebuine origin and their American derivatives. Comprehensive knowledge about the genetic diversity of these populations is fundamental for animal breeding programs and the conservation of genetic resources. This study aimed to assess the phylogenetic relationships, levels of genetic diversity, and patterns of taurine/zebuine admixt...

Lipska sheep is an autochthonous Serbian population from the group of Pramenka (Zapfel) sheep, bred in area around Smederevo, Pozarevac and Mladenovac. The average weight male animals (BW) 95 kg 62 female animals. Other measurements are: wither height (WH) 74 cm, body length (BL) 78 chest width (CW) 23 depth (CD) 40 cm hearth girth (HG) 91 cm. In last sixty years, adult gained ten kilograms wei...

Karnobat sheep plays an important role in the development of breeding Southeastern region Bulgaria. They are valuable source genetic material. The aim present experiment was to determine allele variation CAST gene Local and Merino breeds. A total 60 blood samples were collected – 30 per breed. DNA extracted genotypes all animals identified by means PCR-RFLP technique. restriction reactions acco...

Introduction While there are many types of crossbreeding systems possible, the ones most likely to be useful and practical for use in Florida are some form of a rotational crossbreeding system or, in small herds and a few specialized systems, a terminal crossbreeding program. A third option, the rota-terminal, combines both systems and could also be considered for more intensively managed opera...

In the local breeds with small population size, one of the most important problems is the increase of inbreeding coefficient (F). High levels of inbreeding lead to reduced genetic diversity and inbreeding depression. The availability of high-density single nucleotide polymorphism (SNP) arrays has facilitated the quantification of F by genomic markers in farm animals. Runs of homozygosity (ROH) ...

Evolutionary mechanisms have shaped the genomic architecture of Colombian Creole cattle breeds. The mating and selection processes impacted several traits, promoting differences within between populations. Studies population structure signatures in breeds are scarce, need more attention to better understand genetic differentiation, gene flow, distance. This study aimed analyze identify imprints...

In the present study, we evaluated polymorphism of myogenic factor 5, involved in growth and meat quality traits. Based on PCR-SSCP technology, a novel missense substitution SNP (single-nucleotide polymorphism) g.1142 A > G was identifi ed in the intron1 region of the MyF-5 gene, it causes an amino acid substitution (1142Glutamine/ Glycine1142). Allele frequencies, gene heterozygosity, eff ecti...

Globally, genetic diversity of livestock populations is contracting. Knowing the true extent of the contraction is needed to develop effective conservation strategies. Although contractions of genetic diversity have been documented at the breed level, little within breed documentation has occurred. This situation is no different for US swine breeds. Therefore, the objective of this study was to...