| rom mapping of ligamentous constraints on avian hip mobility: implications for extinct ornithodirans. | studies of soft tissue effects on joint mobility in extant animals can help to constrain hypotheses about joint mobility in extinct animals. however, joint mobility must be considered in three dimensions simultaneously, and applications of mobility data to extinct taxa require both a phylogenetically informed reconstruction of articular morphology and justifications for why specific structures' effects on mobility are inferred to be similar. we manipulated cadaveric hip joints of common quail an ... | 2018 | 29794053 |
| atrazine-xenobiotic nuclear receptor interactions induce cardiac inflammation and endoplasmic reticulum stress in quail (coturnix coturnix coturnix). | atrazine (atr) is one of the most extensively used herbicide that eventually leaches into groundwater and surface water from agricultural areas. exposure to atr does harm to the health of human and animals, especially the heart. however, atr exposure caused cardiotoxicity in bird remains unclear. to evaluate atr-exerted potential cardiotoxicity in heart, quail were exposed with 0, 50, 250, and 500 mg/kg bw/day atr by gavage treatment for 45 days. cardiac histopathological alternation was observe ... | 2018 | 29778080 |
| reply to the comment on "synchronizing biological cycles as key to survival under a scenario of global change: the common quail (coturnix coturnix) strategy" by rodriguez-teijeiro et al. | two methodological criticisms of our paper "synchronizing biological cycles as key to survival under a scenario of global change: the common quail (coturnix coturnix) strategy" (nadal et al., 2018) were proposed in the comment by rodriguez-teijeiro et al. (2018) regarding: 1) our estimates of the mean date of arrival, duration of stay and departure stages in the different regions studied; and 2) the analyses carried out to correlate the phenology of the species with changes in the climate variab ... | 2018 | 29685687 |
| evaluation of propolis extract as a disinfectant of japanese quail (coturnix coturnix japonica) hatching eggs. | this study was carried out to evaluate the effectiveness of an alcoholic propolis extract (15%) as a disinfectant for japanese quail (coturnix coturnix japonica) hatching eggs. a total of 600 eggs were randomly divided into four experimental groups: 1) negative control (nc), without disinfection, 2) control (c), fumigated with formaldehyde gas, 3) (a), sprayed with 96% alcohol, and 4) (p), sprayed with 15% alcoholic propolis extract. the eggs were incubated artificially in a bios hatching appara ... | 2018 | 29672738 |
| erratum to "neurotrophins and specific receptors in the oviduct tracts of japanese quail (coturnix coturnix japonica)" [aanat 210c (2017) 112-120]. | | 2018 | 29653601 |
| comment on: "synchronizing biological cycles as key to survival under a scenario of global change: the common quail (coturnix coturnix) strategy" by nadal, j., ponz, c., margalida, a. | nadal et al. (2018) recently reported on changes in the phenology of the common quail (coturnix coturnix) in seven cloudy regions of spain in relation to climate change. the authors used a long-term ringing database (1961-2014) and calculated the mean date for three biological stages: arrival at the breeding areas, stay and autumn departure. they observed that some of these phenological variables were associated with the climate variables of temperature and rainfall (figs. 4 and 6 of their artic ... | 2018 | 29625750 |
| a life in science with the avian embryo. | my career in research was a second thought. i first (during 8 years) worked as a secondary school teacher and after 4-5 years, during which my two daughters were born, i found a way to escape from what was to be a lifetime job. for two years, my initiation to research was limited to the free time left by my teaching duties. this period of time was a bit "complicated" but not enough to prevent me to realize that research was really what i wanted to do for the rest of my life… and this was when i ... | 2018 | 29616728 |
| age dependent variations in the deep brain photoreceptors (dbps), gnrh-gnih system and testicular steroidogenesis in japanese quail, coturnix coturnix japonica. | the complex physiology of aging involves a number of molecular and biochemical events, manifested as signs of senescence. japanese quail is a very unique and advantageous model to study the signs and symptoms of senescence in the central and peripheral modules of hpg axis. in the present study, we have investigated the age dependent variations in hypothalamic deep brain photoreceptors (dbps), central gnrh-i/ii-gnih-mel1cr system, testicular gnrh-gnih system, testicular steroidogenic genes and pr ... | 2018 | 29580815 |
| insights into thermal stress in japanese quail (coturnix coturnix): dynamics of immunoendocrine and biochemical responses during and after chronic exposure. | avian require comfortable temperatures for optimal development and heat stress is a high concern in warm weather countries. we aimed to assess the dynamics of immunoendocrine and biochemical variables responses of birds exposed to a heat stressor applied during daylight hours, during the chronic stress and the recovery periods. we hypothesize that variables involved in the birds response will be differentially and gradually modified during those periods. female quail (n = 210) were housed in six ... | 2018 | 29478357 |
| effect of probiotic supplementation on organic feed to alternative antibiotic growth promoter on production performance and economics analysis of quail. | the purpose of this study was to know the production performance and economic analysis in quail which use probiotic supplementation to alternate antibiotic growth promoter (agp) to feed consumption, water consumption, egg production, egg mass, feed conversion, and feed efficiency. | 2017 | 29391694 |
| effect of different levels of dietary vitamin e on reproductive and productive performances in japanese quails (coturnix coturnix japonica). | the aim of this study was to evaluate the effects of dietary vitamin e on reproductive and productive parameters in japanese quails. a total number of 240 female and 80 male japanese quail were divided into five treatments with four replications in a completely randomized design. experimental diets were zero control, 30, 60, 120 and 240 mg kg-1 of vitamin e. fertility and total hatchability were not affected by treatments. but, the lowest hatch of fertile eggs and the highest embryonic death wer ... | 2017 | 29326796 |
| acute heat stress alters the expression of orexin system in quail muscle. | accumulating evidences indicate that the hypothalamic neuropeptide orexins or hypocretins are involved in stress-induced responses in mammals. recently, we found that orexin is expressed and secreted from avian muscle cells, however its regulation is still unknown. in this study, we investigated the effect of heat and oxidative stress, the most challenging stressors in poultry production, on the expression of orexin system in quail muscle tissues and myoblast cell lines. four week-old geneticall ... | 2017 | 29311994 |
| effects of phytosterols as food additives on adrenal and reproductive endocrine function during sexual maturation in male japanese quail (coturnix coturnix japonica). | varying amounts of phytosterols (ps) occur naturally in several foods of plant origin. ps, which are structurally and functionally similar to cholesterol, have been shown to reduce plasma total cholesterol (tc) and low-density lipoprotein-cholesterol (ldl-c) levels. moreover, ps disrupts endocrine function in certain animals. in the present study, we investigated the effects of high doses of ps on adrenal and reproductive endocrine function during sexual maturation in japanese male quails. two e ... | 2018 | 32055169 |
| levels of supplementation of inorganic selenium and vitamin e for meat quail aged 0 to 14 and 14 to 35 days. | two experiments were carried out to determine the levels of supplementation of inorganic selenium (se) and vitamin e (ve) in diets of quails aged 0-14 and 14-35 days old. a completely randomized design was used in a factorial design (se = 0.1125; 0.2250; 0.3375 and 0.4500 mg kg-1 diet-1 × ve = 10; 23; 36 and 49 iu kg-1 diet-1 ). in experiment 1, quail (n = 2,400) were aged 0-14 days and were divided into 16 treatments, with three replicates of 50 birds. in experiment 2, quail (n = 1,680) were ... | 2018 | 29250876 |
| accumulation of steroid hormones in the eggshells of japanese quail (coturnix coturnix japonica). | oviparous mother transfer significant amounts of steroid to egg yolk during oviposition and the amounts may vary throughout the embryonic development. eggshell may contain steroid hormones and the amounts could be different during embryonic development inside the egg. this study was designed to quantify the steroid concentrations in the eggshells of japanese quail. we hypothesized that the steroids would be accumulated in the eggshells in a sex-dependent manner. eggshells were obtained from thre ... | 2018 | 29174486 |
| antouka super® induced oxidative stress and reproductive toxicity in male japanese quail (coturnix coturnix japonica). | antouka super® (as), a combination of insecticide (pirimiphos-methyl 16% and permethrin 3%), is one of the most widely used pesticides in agriculture, public health, home and garden, with high potential for human and animal exposure. | 2017 | 29057334 |
| the importance of propolis in alleviating the negative physiological effects of heat stress in quail chicks. | heat stress is one of the most detrimental confrontations in tropical and subtropical regions of the world, causing considerable economic losses in poultry production. propolis, a resinous product of worker honeybees, possesses several biological activities that could be used to alleviate the deleterious effects of high environmental temperature on poultry production. the current study was aimed at evaluating the effects of propolis supplementation to japanese quail (coturnix coturnix japonica) ... | 2017 | 29053741 |
| replacing soybean oil with increasing levels of soybean acid oil in diets of coturnix quails (coturnix coturnix coturnix) and the effects on egg quality. | the effects of increasing levels of soybean acid oil in diets of quails on the quality of eggs were evaluated over a period of 56 days. a completely randomized design with five treatment levels of soybean acid oil (0, 2, 4, 6, and 8%) as a replacer for soybean oil and eight replicates of two quails each were used. a total of 240 fresh eggs were used for quality analysis, and 400 eggs were stored at 23ºc over a period of 0, 7, 14, 21, and 28 days for analysis of shelf-life. polynomial regression ... | 2018 | 29044324 |
| apoptotic mechanism behind the testicular atrophy in photorefractory and scotosensitive quail: involvement of gnih induced p-53 dependent bax-caspase-3 mediated pathway. | in most of the avian species, daylength or photoperiod is the main environmental factor regulating reproduction. during their annual gonadal cycle, birds once sensitive to short or long day effect develop refractoriness to the same daylength and gonad develop or regress accordingly. the present study investigated the effects of photoperiodic alterations on apoptosis mediated testicular responses of photosensitive/photorefractory and scotosensitive/scotorefractory quail, coturnix coturnix japonic ... | 2017 | 28992606 |
| synchronizing biological cycles as key to survival under a scenario of global change: the common quail (coturnix coturnix) strategy. | breeding grounds are key areas for sustaining common quail (coturnix coturnix) populations as this species is characterised by short life expectancy that requires high offspring production. annually, breeding quails make up to three breeding attempts in different places. however, the impact of climate warming on quail phenology is unknown. here, we use a long-term study (1961-2014) of quail-ringing in spain and data on variation in rainfall and temperature over the past 86years to evaluate how q ... | 2018 | 28968932 |
| coccidia of japanese quail: from identification, prevalence, infection, and immunization. | a systematic study was undertaken to identify the species, characterize the pathogenicity, and assess the immunization of eimeria bateri in japanese quail ( coturnix coturnix japonica). in total, 107 japanese quail farms were examined. the samples were processed and oocyst shape indices of sporulated oocysts were determined. out of 107 examined farms, 34 (31.78%) farms were positive. four eimeria spp. were morphologically identified. for characterization of the pathogenicity, japanese quail were ... | 2018 | 28937852 |
| critical developmental windows for morphology and hematology revealed by intermittent and continuous hypoxic incubation in embryos of quail (coturnix coturnix). | hypoxia during embryonic growth in embryos is frequently a powerful determinant of development, but at least in avian embryos the effects appear to show considerable intra- and inter-specific variation. we hypothesized that some of this variation may arise from different protocols that may or may not result in exposure during the embryo's critical window for hypoxic effects. to test this hypothesis, quail embryos (coturnix coturnix) in the intact egg were exposed to hypoxia (~15% o2) during "ear ... | 2017 | 28926567 |
| testicular atrophy and reproductive quiescence in photorefractory and scotosensitive quail: involvement of hypothalamic deep brain photoreceptors and gnrh-gnih system. | birds time their daily and seasonal activities in synchronization with circadian and annual periodicities in the environment, which is mainly provided by changes in photoperiod/day length conditions. photoperiod appears to act at the level of eye, pineal and encephalic/deep brain photoperception and thus entrain the hypothalamic clock as well as reproductive circuitry in different avian species. in this article our focus of study is to elucidate out the underlying molecular mechanism of modulati ... | 2017 | 28923598 |
| effects of multi-trait selection on phenotypic and genetic changes in japanese quail (coturnix coturnix japonica). | the present study in japanese quail was aimed to develop multi-trait genetic selection program for a meat type sire line utilizing the mixed-model methodology. in total, 2000 pedigreed quail were formed the basis of the research where a multi-trait animal model was performed. a flock consisting of a total of 160 families (1 male: 3 female) was developed from the initial flock (base population of sire line), so as to obtain a selection flock sire line. body weight at 5 weeks of age was chosen as ... | 2016 | 32908371 |