جستجوی مقالات مرتبط با کلیدواژه "native chickens" در نشریات گروه "دامپزشکی"

Parasitic infections of native chickens are among sources of infection for people and industrial poultry, thereby constituting health and economic problems. The purpose of this study was to determine the abundance of Ectoparasites and gastrointestinal helminth of native chickens in Kerman.

One hundred native chickens selected randomly during summer, fall, springs, and winter. Gastrointestinal helminth and ectoparasites were identified using microscopic examination.

Totally of 100 native chickens investigated, 64 were infected and 36 were uninfected. The Present study shows that native chickens in Kerman are infected with Subulura brumpti, Ascaridia galli, Rallietina tetragona, Rallietina echinobothrida, larvae of Argas tick, and Menacanthus stramineus.

Statistical analysis showed significance association between sex, season, and contact with another animal. While no significant association was found between age and helminth infection. With regard to importance of breeding of poultry and effect of internal and external parasites on poultry production as well as human health, it is hoped that the research could increase the knowledge of experts and executive organizations.

Ectoparasite infestation of poultry is one of the sources of infestation for industrial poultry, thereby constituting economic losses.The study was aimed to determine prevalence and species diversity of ectoparasites infestation of poultry in Ardabil province, Iran. A total of 1241 native chickens from 17 villages were randomly investigated. The feathers and skin were investigated using the scraping method. The fissures and crevices inside walls were searched for soft ticks. Body surface and feathers were also searched for mites and lice. Flies were trapped in nests. The overall prevalence was 5.88% with the highest infestation in fall (2.09%) and the central part (2.27%) of the region. There was no significant difference between prevalence and both geographic and seasonal distribution. Lice (3.18%), soft ticks (1.63%) and flies (1.07%) had the highest prevalence in south (0.89%), center (0.32%) and north (0.33%), respectively. The species diversity of ectoparasites with the highest prevalence was for Monopon galinae (1.72%) followed by Argas pesrsicus (1.63%) and Musca domestica (1.07%). All infested chickens had also mixed infestation with two (12.51%) and three (9.77%) species of ectoparasites. Results of this study uncovered the low prevalence of ectoparasites; however, it may be an important source of infestation for industrial poultry in the region.

Prolactin is a hormone which has an important role in the behavior of bird's broodiness. Several studies have shown that prolactin gene could be a candidate gene for broodiness. The variations in the different parts of this gene, have potential usefulness as genetic markers and could help in the genetic improvement of populations. The aim of this research was to investigate the prolactin gene polymorphism using PCR-RFLP method on some masses Khouzestan native chicken. Therefore, random blood sampling from 100 chickens of native chickens in Khuzestan province breeding and Jihad livestock inputs (Bavi city) was performed. Genomic DNA was extracted from these samples, using modified salting out method. Polymerase chain reaction was used to amplification of 439 bp fragments of prolactin gene promoter by specific primers. Allele frequency for C and T, 0.655 and 0.345 and genotype frequencies of CC, CT and TT 0.41, 0.49 and 0.10 were estimated respectively. Using the chi-square (X2) showed that the locus allele frequencies is not in Hardy-Weinberg equilibrium. The results showed that prolactin gene is polymorphic in the studied area and PCR-RFLP method is proper for genotype determination of prolactin gene chicken studies.

Parasitic infections of native chickens are among sources of infection for people and industrial poultry, thereby constituting health and economic problems. The purpose of this study was to determine the prevalence and the identification of species of internal and external parasites of native chickens in Lorestan Province. One hundred native chickens selected randomly. Endoparasites and ectoparasites were identified using microscopic examination. Fourteen species of parasites were collected from alimentary canals, lungs and feathers of chickens. Infection rates were as follows: Raillietina tetragona 22%, Choanoataenia infandibulum 1%, Ascaridia galli 16%, Heterakis gallinarum 17%, Subulura brumpti 2%, Trichostrongylus tenuis 3% and Capillaria anatis 3%. Out of 100 chickens, 8% were infected with Syngamus trachea. Native chickens were infected with Eimeria tenella (10%), Eimeria Maxima (4%) and Eimeria Acervulina (3%). Five percent of native chickens were infected with Menopen gallinae and Cuclotogaster heteragraphus. From the 100 native chickens examined, 4% were infected with Argas persicus. It is suggested that educational programs about periodical anti-parasitic treatments are necessary for veterinarians and rural people.

Fifty healthy broiler chickens of Ross hybrid healthy breed (308, industrial) and fifty native chickens aged 45 days were venupunctured. The concentration of serum total protein, albumin, uric acid, aspartate amino transferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), triglyceride and cholesterol were measured. In the present study the normal values of the abovementioned parameters was determined. Breed affected some biochemical parameters of the chickens but not other biochemical parameters. The concentration of triglyceride, cholesterol, albumin, AST and ALT were significantly different in the Ross hybrid broiler and native chickens (P<0.05), but the concentration of uric acid, total protein and ALP were not significantly different in the Ross hybrid broiler and native chickens (P>0.05).