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... An experiment was performed using 1,000 laying Japanese quails to assess the availability of two alternative dietary methionine sources. Treatment 01 = Basal Feed that is deficient in digestible methionine + cystine (Met + Cys). The other treatments were constituted by Met + Cys levels of 0.8, 1.60 and 2.40 g/kg, supplemented with DL‐Methionine‐99%, HMTBA‐88% and HMTBA‐84%, being 10 treatments in ...
... The quail is a valuable farm and laboratory animal. Yet molecular information about this species remains scarce. We present here the first genetic linkage map of the Japanese quail. This comprehensive map is based solely on amplified fragment length polymorphism (AFLP) markers. These markers were developed and genotyped in an F2 progeny from a cross between two lines of quail differing in stress r ...
Anas platyrhynchos; proteins; poultry science; zona pellucida; chimerism; amino acids; Coturnix japonica; Pekin
Abstract:
... Avian blastodermal cells at stage X are used to produce interspecies chimeras for heterogenous poultry reproduction. However, recipient-derived inner perivitelline layer (IPVL)-enclosed donor-derived ova may affect the efficiency of germline transmission via chimera. Among the proteins in the IPVL, zona pellucida protein C (ZPC) plays an important role in sperm-egg binding and inducing the acrosom ...
... It was hypothesized that polychlorinated diphenyl sulfides (PCDPSs) can potentially interact with an aryl hydrocarbon receptor (AHR) and thereby cause adverse effects in wildlife like birds. A recently developed avian AHR1-luciferase report gene (LRG) assay was used to assess the interaction between avian AHR1 and 18 PCDPSs and to compare the interspecies sensitivity among chicken, ring-necked phe ...
recombinant antigens; antibody formation; age at first egg; binding proteins; immunization; blood plasma; Coturnix japonica; inhibin
Abstract:
... The effects of active immunization against inhibin on production performance in female Japanese quail (Coturnix coturnix japonica) were assessed in two separate trials using an MBP-cINA521 fusion protein as an immunogen. The fusion protein, MBP-cINA521, consisted of the bacterial maltose binding protein (MBP) and a truncated form of the mature alpha-subunit of chicken inhibin (cINA521). MBP-cINAl5 ...
chickens; vertebrate viruses; host range; food animals; Influenza A virus; disease transmission; amino acid sequences; alternative hosts; avian influenza; nucleotide sequences; Coturnix japonica; microbial genetics; virus replication; signs and symptoms (animals and humans)
Abstract:
... To assess the potential of quail as an intermediate host of avian influenza, we tested the influenza A/Mallard/Potsdam/178-4/83 (H2N2) virus to determine whether through adaptation a mallard strain can replicate and transmit in quail, as well as other terrestrial birds. After five serial passages of lung homogenate a virus arose that replicated and transmitted directly to contact cage mates. To te ...
... In breeding programs, using appropriate models to estimate the variance components with high accuracy is essential. Considering the non-additive genetic effects along with additive effects in evaluation analysis models can be effective in increasing the accuracy of estimates. This study was conducted to fit the best model for estimation of variance components of humoral immune responses (antibody ...
... One of the hypotheses that attempt to explain physiological limitations of energy budgets is the symmorphosis hypothesis, which proposes that if matching structures to functional needs were combined with the strict economy of energy and materials, the result would be an optimal organ design for the specific function it serves. Evidence in favor of symmorphosis in adults is as abundant as evidence ...
Coturnix japonica; body condition; corticosterone; females
Abstract:
... In some species, the act of mating may be the only occasion when a female judges the male and the course of the sexual encounter might influence forms of maternal investment that are mediated by hormonal pathways. Despite the growing interest in fitness consequences of acute adrenocortical responses, it has not been determined to what extent the act of mating provokes such responses in females. We ...
... The density-related permanence test (DRP) is used to classify young birds (while in groups) according to their individual permanence in proximity to either a high or low density of conspecifics (HD or LD, respectively). The birds’ performance in DRP was associated with underlying differences in the social responses of their individuals. Quails in homogeneous groups of LD residents responded with l ...
... The aim was to evaluate the excretion of residues of aflatoxin B1 (AFB1), aflatoxin M1 (AFM1), aflatoxin B2a (AFB2a) and aflatoxicol (AFL) in eggs of laying Japanese quail fed rations with low levels of aflatoxin B1 for 90 days. The quail were randomly assigned into four experimental groups and given prepared rations containing either 0 (controls), 25, 50 or 100 μg AFB1kg−1 feed. Thirty-two eggs p ...
... The effect of sex and age of Japanese quails (Coturnix japonica) on their performance, blood biochemical parameters, carcass traits, and meat quality was evaluated in this experiment. A total of 450, 3-wk-old Japanese quails (225 males and 225 females) were equally divided into six groups (75 birds each) in a 2 × 3 factorial design, including two sex (male and female) and three slaughter ages (5, ...
... Several days under the influence of high environmental temperature negatively impact on some immune-related variables of poultry species. However, it is little known whether this exposure affects differentially the immune response on different life stages. This study was aimed at characterizing the immune responses of juvenile and adult female Japanese quail (Coturnix coturnix) when exposed to a c ...
... For successful breeding programs, it is important to quantify the useful period of a male's reproductive life and it is often done simply by measurement of semen quality. This information is lacking for Japanese quail so we tested whether there is a decline in ejaculate quality and sperm kinematics with age, and whether the decline varies among strains. Nine males (n = 9) from each of 5 strains (A ...
sexual maturity; poultry housing; aggression; animal welfare; roosters; age; sex ratio; light intensity; group size; egg fertility; social dominance; Coturnix japonica
Abstract:
... 1. Head injuries caused by aggressive pecking are an important welfare problem in quail farming. The aim of experiments one to three was to reduce the rate of aggressive pecking in breeder groups. 2. The quails were housed in pens containing litter, nest boxes and a dustbathing box. The experimental groups consisted of 2/14, 3/14, 5/15 or 5/35 (males/hens) quails which were introduced into the exp ...
Coturnix japonica; agricultural sciences; albumins; body weight changes; cholesterol; egg masses; egg production; genotype; globulins; phenotype; protein content; quails
Abstract:
... The present investigation was carried out to estimate the effects of genotype and sex on growth and laying performance and assess the variations in plasma constituents in the tested genotypes and their relations with productive traits after four generations of selection. Data of growth and laying performance on 1440 females and males of Japanese quail were taken from the three quail genotypes: mat ...
... In birds, fatty acids (FA) serve as the primary metabolic fuel during exercise and fasting, and their composition affects metabolic rate and thus energy requirements. To ascertain the relationship between FAs and metabolic rate, a distinction should be made between structural and fuel lipids. Indeed, increased unsaturation of structural lipid FAs brings about increased cell metabolism, and changes ...