Abstract
Eggshell abnormalities were seen in the apex of eggs in two of three flocks of multi-age, Hy-Line layer chickens housed on a farm in Northern Italy. Approximately 1.3% to 1.8% of eggs in one flock were affected, amounting to 300-400 eggs per day; the abnormalities resulted in a great deal of breakag...
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PMID: 20608549
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Abstract
Recently, the causal relationship between eggshell apex abnormalities (EAA) and Mycoplasma synoviae was described. This eggshell pathology has only been documented in table egg layers both spontaneously and experimentally infected with M. synoviae, suggesting that meat-type layers are less prone to...
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PMID: 20390548
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Abstract
The eggshell membrane (ESM) contains several surface functional groups such as amines, amides and carboxylic groups with potential as SPE adsorbent for the retention of target species of interest. In this paper, the potential use of ESM, a typical biomaterial, as solid-phase extraction (SPE) adsorbe...
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PMID: 20152431
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Abstract
Studies were conducted to determine the effects of various sanitizing compounds on the microbial and physical quality of shell egg processing vacuum loader cups. The sanitizing compounds used were as follows: sterile, distilled water; 200 microL/L of sodium hypochlorite; 200 microL/L of calcium hypo...
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PMID: 20181875
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Abstract
Three experiments were conducted to develop methods to control the amount of water loss and to evaluate the metabolic effects of water condition in the White Leghorn breeder eggs during incubation. One hundred twenty, 54, and 90 Julia strain White Leghorn breeder eggs were incubated at 37.8 degrees...
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PMID: 20181873
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Abstract
Stress and diseases have the potential to influence the deposition of eggshell pigmentation during egg formation. Therefore, defining the shell color of eggs on a daily basis could be a representative method for monitoring stress or health status of a flock and maintaining good performance. A novel...
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PMID: 20181881
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Abstract
We compared membrane thickness of fully developed eggs with those of non-developed eggs in different endangered falcon taxa. To our knowledge, membrane thickness variation during development has never been examined before in falcons or any other wild bird. Yet, the egg membrane constitutes an import...
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PMID: 20128106
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Abstract
Hens laying eggs with egg-pole shell defects (EPS) were examined in a clinical prospective study. 86 hens with EPS and 72 hens without EPS from three flocks were selected for this study. It could be proven serologically that hens with EPS had significant (p < 0.05) higher titers against Mycoplasma (...
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PMID: 20329643
PDF is available here.
Abstract
Soluble eggshell membrane protein (SEP) is used to engineer poly(D,L-lactic acid) (PDL-LA) membrane surface by a physical entrapment method to enhance cytocompatibility. Attenuated total reflection Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and contact...
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PMID: 19048638
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Abstract
An experimental study was conducted to assess the effect of a live Mycoplasma synoviae vaccine (Vaxsafe MS; Bioproperties Pty Ltd, Ringwood, Victoria, Australia) on M. synoviae-induced eggshell apex abnormalities (EAA). Four experimental groups of specified-pathogen-free white laying hens were made....
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PMID: 19937520
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Abstract
We detected the same serovars on samples taken from the farm and from eggshells within a given flock, with isolates sharing the same genetic pattern in 7 of 11 flocks. Eggshells tested positive for Salmonella in flocks (i) located where delivery trucks pass near air entrances of the poultry house, (...
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PMID: 19833029
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Abstract
The Food and Drug Administration (FDA) is issuing a final rule that requires shell egg producers to implement measures to prevent Salmonella Enteritidis (SE) from contaminating eggs on the farm and from further growth during storage and transportation, and requires these producers to maintain record...
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PMID: 19588581
PDF is available here.
Abstract
The contents of trace elements in the eggshells of Emberiza jankowskii, Parus major and Passer montanus were examined by flame atomic absorption spectrophotometer (FAAS), and the correlations between these trace elements of eggshell and breeding characteristics of the three bird species were studied...
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PMID: 19798988
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Abstract
A one-year-old boy with two months' chronic cough and dysphonia, unresponsive to therapy for pneumonia, had a radiopaque, wedge-shaped tracheal foreign body noted on anteroposterior, but not lateral radiographs, and he eventually became aphonic. Laryngoscopy yielded a subglottic embryonated duck egg...
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PMID: 19495500
PDF is available here.
Abstract
A latest Cretaceous (68 to 65 million years ago) vertebrate microfossil assemblage discovered at Kakanaut in northeastern Russia reveals that dinosaurs were still highly diversified in Arctic regions just before the Cretaceous-Tertiary mass extinction event. Dinosaur eggshell fragments, belonging to...
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PMID: 19089398
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Abstract
Egg shell membrane is a novel, robust, microporous, cost effective, easily available organic support material. In recent studies egg shell membranes were utilized as organic support for enzyme immobilization. But low conjugation yield limits its application as good support for biotechnological indus...
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PMID: 19159784
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Abstract
Novel and traditional eggshell quality measurements were made from up to 2000 commercial pedigree hens for a candidate gene association analysis with organic eggshell matrix genes: ovocleidin-116, osteopontin (SPP1), ovocalyxin-32 (RARRES1), ovotransferrin (LTF), ovalbumin and ovocalyxin-36, as well...
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PMID: 18828860
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Abstract
To clarify breeding failure in avian species caused by the estrogenicity of chemicals, alterations in the reproductive systems of Japanese quail exposed in ovo to a xenoestrogen were investigated. An injection of diethylstilbestrol (DES) into the yolk before incubation decreased, after sexual matura...
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PMID: 18597071
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Abstract
We review matrix-mineral relationships in the eggshell at the ultrastructural level using scanning and transmission electron microscopy, and describe the distribution of osteopontin (OPN) as determined by colloidal gold immunolabeling for OPN. A rich protein network integrated within the calcitic st...
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PMID: 18698131
PDF is available here.
Abstract
The Japanese quail lays eggs with colourful and patterned shells which make the eggshell colour difficult to classify. In this study, the method of measuring colour of patchy eggs using image analyses and its power to discriminate among individual variation were established. Estimated repeatability...
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PMID: 19621137
PDF is available here.
Abstract
The purpose of the present study was to determine the peculiarities of myocardium development in the chick embryos after closure of the half of the eggshell surface on day 11 of incubation. By the end of experimental day 3 (day 14 of incubation), myocardium demonstrated muscle cell hyperplasia and ac...
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PMID: 19563172
PDF is available here.
Abstract
These results suggest that late incubation conditions affect long bone development in broilers....
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PMID: 19093239
PDF is available here.
Abstract
1. Changes in water loss, eggshell conductance and hatchability with flock age were monitored in layer hens in a commercial hatchery. 2. Optimal water loss for maximal hatchability of layer eggs was found to be 12 to 13% of initial egg mass at d 18 of incubation. 3. Mass specific water vapour conduc...
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PMID: 19093240
PDF is available here.
Abstract
The purpose of this study was to investigate the potential effectiveness of a surface-modified natural calcium carbonate, hen eggshell (ES) as a bone graft substitute. The surface characteristics, cell viability on, and osteoconductivity of, particulated ES with and without hydrothermal treatment in...
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PMID: 18085653
PDF is available here.
Abstract
Although the majority of onychophorans are viviparous or ovoviviparous, oviparity has been described in a number of species found exclusively in Australia and New Zealand. Light microscopy and scanning and transmission electron microscopy were used to examine developing eggs and the reproductive tra...
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PMID: 18677704
PDF is available here.
Abstract
We report a new type of multifunctional nanomaterials, FePt@Fe2O3 yolk-shell nanoparticles, that exhibit high cytotoxicity originated from the FePt yolks and strong MR contrast enhancement resulting from the Fe2O3 shells. Encouraged by the recently observed high cytotoxicity of FePt@CoS2 yolk-shell...
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PMID: 18681432
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Abstract
We show here that Rab11 is expressed in the entire testis, more prominently in the secretory cells, and in ovary it is localized at the posterior pole. Rab11mo males and females are sterile. The sterility in males has been attributed to defects in the sperm individualization process, while in female...
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PMID: 18640060
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Abstract
The fate of Salmonella enterica serovar Enteritidis (SE) in whole, unbroken eggs was monitored during storage at fixed or changing temperatures after inoculation with 20-47 c.f.u. of SE. Eggs stored at 10 degrees C and 20 degrees C showed little or no bacterial growth over 6 weeks, while egg storage...
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PMID: 17988424
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Abstract
Eggs of the Great Crested Grebe (Podiceps cristatus) were collected from a breeding area on Lake Maggiore (Northern Italy) from 2001 to 2005 in the vicinity of a p,p'-DDT manufacturer, whose production was stopped in 1996. DDT homologue and PCB congener levels were determined and compared to levels...
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PMID: 18644614
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Abstract
We generated mutations in bap170 and bap180. Surprisingly, we found that Bap180 is not essential for viability, although it is required in ovarian follicle cells for normal eggshell development. Bap170 is necessary to stabilize the Bap180 protein, but a mutant form that retains this function is suff...
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PMID: 18573871
PDF is available here.
Abstract
We aimed to test whether artificial reduction of the UV wavelengths reflected from parasitic eggshell affects rejection behaviour in the blackcap Sylvia atricapilla. To achieve this goal, we experimentally manipulated, with UV, part of spectra reflected from conspecific eggs and reduced it into the...
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PMID: 18626087
PDF is available here.
Abstract
We use the known properties of the thrush visual system (Turdus sp.) to calculate photon capture for the four single cone photoreceptors, and the principal member of the double cone class for eggs in clutches of two introduced European thrush species (Turdus merula and Turdus philomelos) in New Zeal...
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PMID: 18401571
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Abstract
A qualitative exposure assessment for Salmonella in eggs produced on the island of Ireland was developed. The assessment was divided into three main modules (production and packing, distribution and storage, and preparation and consumption), and each of these stages into defined steps in the exposur...
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PMID: 18556082
PDF is available here.
Abstract
Cleaning and sanitation are paramount in food processing. Gaining an understanding of the microbial populations present in a processing facility can help in the development of effective and efficient cleaning. The current study was undertaken to gain a better understanding of the Enterobacteriaceae...
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PMID: 18648066
PDF is available here.
Abstract
We conclude that reducing the level of SFAT from 3.0 to 1.1% might decrease productivity and the percentage of extra large eggs. However, a reduction in the MET level from 0.36 to 0.31% and in LIN from 1.60 to 1.12% did not affect any trait in hens late in the production cycle. Eggshell quality was...
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PMID: 18648054
PDF is available here.
Abstract
We expanded our search to other skeletal tissues. Using Western blotting, we found OC-116 in the matrix of chick cortical bone and laying hen medullary bone as well as in hypertrophic chondrocyte lysates. Furthermore, other members of this family (bone sialoprotein, dental matrix protein-1, and oste...
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PMID: 18648057
PDF is available here.
Abstract
We investigated matrix-mineral relationships in the avian eggshell at the ultrastructural level using scanning and transmission electron microscopy combined with surface-etching techniques to selectively increase topography at the matrix-mineral interface. Moreover, we investigated the distribution...
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PMID: 18511297
PDF is available here.
Abstract
We examined gene expression profiles of whole female flies at four time points following copulation. We found that, soon after copulation ends, a large number of small-magnitude transcriptional changes occurred in the mated female. At later time points, larger magnitude changes were seen, although t...
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PMID: 18562649
PDF is available here.
Abstract
The avian vitelline membrane (VM) is a multilayered proteinaceous structure separating egg white from yolk. The innermost layer of the VM, deposited onto the oocyte plasma membrane in the ovary, corresponds to the mammalian zona pellucida (ZP). The outer layer is produced in the infu...
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PMID: 18452232
PDF is available here.
Abstract
We measured P(O2) under the shell of avian eggs indirectly, by sealing 0.05 mL glass tubes to the shell, sealing them with mercury and using an oxygen microelectrode to measure the contained gas that equilibrates with the gas in the shell membranes. This technique requires a smaller area of contact...
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PMID: 16815717
PDF is available here.
Abstract
We describe the first known embryo of a neoceratopsian dinosaur, perhaps the most ubiquitous Laurasian group of Cretaceous dinosaurs, which is preserved completely enclosed within an egg. This specimen was collected from Late Cretaceous beds of southern Mongolia, which commonly preserve fossils of t...
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PMID: 18347769
PDF is available here.
Abstract
Sequential application of heat and gaseous ozone was significantly more effective than either heat or ozone alone. The demonstrated synergy between these treatment steps should produce safer shell eggs than the heat treatment alone. SIGNIFICANCE AND IMPACT OF THE STUDY: Shell eggs are the most commo...
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PMID: 18422940
PDF is available here.
Abstract
Yeasts and molds can grow on or in eggs, causing spoilage. Washed and unwashed eggs (treatments) were collected aseptically on three separate days (replications) from a commercial processing facility and stored for 10 weeks at 4 degrees C. Ten eggs from each treatment were sampled weekly (110 eggs p...
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PMID: 18592756
PDF is available here.
Abstract
In the United States, commercial shell eggs are washed and graded before retail. Since passage of the Egg Products Inspection Act in 1971, processing guidelines have been set to ensure that external and internal characteristics are maintained. However, less is known about how commercial processing a...
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PMID: 18493013
PDF is available here.
Abstract
Effects of long-term climatic stress (heat exposure), short-term hygienic stress [lipopolysaccharide (LPS)], or a combination of both challenges on performance of 4 layer lines were investigated. The lines were earlier characterized by natural humoral immune competence and survival rate. At 22 wk of...
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PMID: 18492988
PDF is available here.
Abstract
The Egg Safety Action Plan released in 1999 raised questions concerning egg temperature used in the risk assessment model. Therefore, a national study was initiated to determine the internal and external temperature sequence of eggs from oviposition through distribution. Researchers gathered data fr...
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PMID: 18493010
PDF is available here.
Abstract
The following study examines the reliability of physically matching fragments of bone and other mineral-based biological materials such as shells and teeth. Participants with varying education, training, and experience were asked to complete a matching exercise consisting of intentionally fragmented...
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PMID: 18471217
PDF is available here.
Abstract
Tyrosinase from a plant source Amorphophallus companulatus was immobilized on eggshell membrane using glutaraldehyde. Among the three different approaches used for immobilization, activation of eggshell membrane by glutaraldehyde followed by enzyme adsorption on activated support could stabilize the...
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PMID: 18358868
PDF is available here.
Abstract
We investigated the antimicrobial activity of eggshell cuticle and outer eggshell protein extracts from four Anseriform species: wood duck (Aix sponsa), hooded merganser (Lophodytes cucullatus), Canada goose (Branta canadensis) and mute swan (Cygnus olor). Cuticle and outer eggshell protein was extr...
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PMID: 18289902
PDF is available here.
Abstract
The adsorption of cationic basic blue 9 and anionic acid orange 51 from aqueous solution onto the calcified eggshell (ES) and its ground eggshell powder (ESP) was carried out by varying the process parameters such as agitation speed, initial dye concentration, adsorbent mass and temperature. The ads...
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PMID: 17543519
PDF is available here.
Abstract
C-type lectin-like proteins are major components of the calcified eggshell of multiple avian species. In this study, two representative avian C-type lectin-like proteins, ovocleidin-17 and ansocalcin, were purified from decalcified chicken and goose eggshell protein extracts and investigated for car...
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PMID: 18258195
PDF is available here.
Abstract
An F(1) mutagenesis strategy was developed to identify conditional mutations affecting extracellular matrix (ECM) patterning. Tubulogenesis requires coordinated movement of epithelial cells and deposition of a multilayered ECM. In the Drosophila ovary, an epithelium of follicle cells creates the egg...
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PMID: 18245854
PDF is available here.
Abstract
We hypothesise that egg aggregation could reduce water lost under dry conditions. We exposed aggregated and isolated eggs to severe hydric stress followed by a period of rehydration. Hydric stress caused a general loss of water in common chameleon eggs. Initial egg mass did not affect survival but e...
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PMID: 18074142
PDF is available here.
Abstract
In this study, a new chemiluminescence (CL) flow-through biosensor for glucose was developed by immobilizing glucose oxidase (GOD) and horseradish peroxidase (HRP) on the eggshell membrane with glutaraldehyde as a cross-linker. The CL detection involved enzymatic oxidation of glucose to D-gluconic a...
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PMID: 18036547
PDF is available here.
Abstract
We investigated the hypothesis that the cuticle may also reduce microbial contamination by providing a chemical defence. 2. Outer eggshell and cuticle protein was extracted from domestic chicken (Gallus gallus), duck (Anas platyrhynchos) and goose (Anser anser) eggs by HCl and urea treatment, respec...
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PMID: 18409087
PDF is available here.
Abstract
The effects of 6/85-strain Mycoplasma gallisepticum (6/85MG) inoculation alone or in conjunction with a F-strain M. gallisepticum (FMG) overlay and its timing on the performance of commercial egg-laying hens were investigated. Control birds received sham inoculations at 10 wk of age. A second treate...
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PMID: 18281589
PDF is available here.
Abstract
The present study was initiated to perform a comparative measurements of egg dimension and structure of four different species pertaining to three families of the super family: Coccoidea. These species were: Mycetaspis personata (Comstock) (Diaspididae), Ceroplastes floridensis (Comstock) (Coccidae)...
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PMID: 19226792
PDF is available here.
Abstract
The study of vitelline glands of digenean Haploporus lateralis, indicates that the glands consist of vitelocytes in various stages of maturation. The cytoplasmic process of nurse cells which surrounded the vitelline lobes, intrude between vitelocytes and surround them. Immature vitelline cells are u...
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PMID: 18819603
PDF is available here.
Abstract
Calcium is one of the most important plasma constituents in mammals and birds. It provides structural strength and support (bones and eggshell) and plays vital roles in many of the biochemical reactions in the body. The control of calcium metabolism in birds is highly efficient and closely regulated...
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PMID: 18165138
PDF is available here.