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At least 217 records · Page 12Linked to original sources
PubMed1989

Effect of hatching egg sanitizers on embryonic survival and hatchability of turkey eggs from different lines and on egg shell bacterial populations.

Three experiments were conducted to examine the effect of hatching egg sanitizers on embryonic survival, hatchability, and microbiological populations of turkey eggs. Each experiment consisted of two trials. Experiments 1 and 2 were designed to examine embryonic survival and hatchability following sanitization. Experiment 3 examined postsanitization levels of bacteria on the shell surface and inside the egg at Day 7 of incubation. In Experiment 1, formaldehyde fumigation (FF) was compared to quaternary ammonium (QA). In Trial 1, eggs of 359 hens representing 10 lines were randomly assigned to one of the two treatments. In Trial 2, 3,890 eggs produced from a cross of randombred control line (RBC2) females with commercial sire line (C) males were randomly assigned to one of the two treatments. Differences due to sanitizing treatment were nonsignificant in both trials. Line was significant for 7-day embryonic survival and hatch of surviving embryos in Trial 1. In Experiment 2, QA was compared with QA plus U.S.P. Formalin (QAF). In Trial 1, eggs of 288 hens representing 10 lines were randomly assigned to one of the two treatments. In Trial 2, 1,058 eggs produced from the cross of RBC2 females with C males were randomly assigned to one of the two treatments. Differences due to sanitizing treatment were significant only for 7-day embryonic survival in Trial 2; embryonic survival was highest for QA. Line differences in Trial 1 were significant (P less than .01) for 7-day embryonic survival and hatch of surviving embryos.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗
PubMed1992

Morphology of the uterus of Ascaris lumbricoides in the region where fertilization and formation of egg-shell occur.

Morphology of the female reproductive system of Ascaris lumbricoides L. was studied in the region starting with the junction between the oviduct and the uterus (O-U) up to the junction of both uterine branches into the vagina with regard to the process of fertilization and formation of egg-shells. In the O-U junction morphology differed in two following sections: a continuous simple squamous up to simple cuboidal epithelium, and simple cuboidal up to columnar epithelium with broad intercellular spaces leading into the lumen of the tubular reproductive organ filled with sperm. The area in the O-U junction zone was found where the wall of the organ was formed by elongated club-shaped cells attached to the common basal lamina by a narrow pedicle. Intercellular spaces thus formed "crypts" which was covered with dilated parts of cells towards the tubular lumen. Crypts were found to be filled with sperm. This area resembles the structure known as the receptaculum seminis where the stored sperm survive. Epithelial cells of the uterus are of cuboidal up to columnar shape with signs of merocrine secretion. In the distal part of the uterus the secretory active cells probably produce viscous secreta allowing the transfer of the eggs towards the vagina. The cells of the uterus wall are elongated and because of their longer axis, they are orientated longitudinally. In centripetal parts, the cell walls do not have contact with each other and form elongated, deep furrows ("canyons") through which the sperm can run against the flow of uterus content up to the junction of the O-U, where they are stored in the spermatheca-like structure. At any time they are disposal for fertilization.

Animals↗
PubMed1996

From the Centers for Disease Control and Prevention. Outbreaks of Salmonella serotype Enteritidis infection associated with consumption of raw shell eggs--United States, 1994-1995.

Salmonella serotype Enteritidis (SE) accounts for an increasing proportion of all Salmonella serotypes reported to CDC's National Salmonella Surveillance System. During 1976-1994, the proportion of reported Salmonella isolates that were SE increased from 5% to 26%. During 1985-1995, state and territorial health departments reported 582 SE outbreaks, which accounted for 24058 cases of illness, 2290 hospitalizations, and 70 deaths. This report describes four SE outbreaks during 1994-1995 associated with consumption of raw shell eggs (i.e., unpasteurized eggs) and underscores that outbreaks of egg-associated SE infections remain a public health problem.

Disease Outbreaks↗
PubMed1996

Outbreaks of Salmonella serotype enteritidis infection associated with consumption of raw shell eggs--United States, 1994-1995.

Salmonella serotype Enteritidis (SE) accounts for an increasing proportion of all Salmonella serotypes reported to CDC's National Salmonella Surveillance System. During 1976-1994, the proportion of reported Salmonella isolates that were SE increased from 5% to 26%. During 1985-1995, state and territorial health departments reported 582 SE outbreaks, which accounted for 24,058 cases of illness, 2,290 hospitalizations, and 70 deaths. This report describes four SE outbreaks during 1994-1995 associated with consumption of raw shell eggs (i.e., unpasteurized eggs) and underscores that outbreaks of egg-associated SE infections remain a public health problem.

Disease Outbreaks↗
PubMed2000

The egg-shell sign: a possible indicator of raised intrarenal pressure.

Prenatal diagnosis of pelvicalyceal dilatation has produced clinical material that we are continually reinterpreting with the help of improving ultrasound equipment. However, the ability to predict the outcome for any one patient with marked dilatation remains poor. We describe a new sign that may help identify those fetuses who have high intrarenal pressure and therefore justify more aggressive management, while obviating the need for intervention for those in whom it is not present. The egg-shell sign consists of a thin crescent of increased echogenicity over a distended calyx and, in this case, was documented to be associated with other features of raised intrarenal pressure.

Adult↗
PubMed1979

The structure of the egg-shell of Aspiculuris tetraptera Schulz (Nematoda: Oxyuroidea).

The egg of Aspiculuris tetraptera is an ellipsoid measuring 93 x 40 microns. The shell consists of 5 layers: the external uterine layer, internal uterine layer, vitelline layer, chitinous layer and the lipid layer. This nomenclature is based upon the formation and histochemistry of the shell layers. The internal uterine layer contains a system of interconnecting spaces, partly filled by uterine secretion, which open to the exterior of the egg via breaks in the external uterine layer. The surface of the egg is covered by a system of interconnecting grooves. Freeze-etching reveals that the internal uterine layer is open to the exterior via pores, which open into the grooves. Rod-shaped particles are also revealed in the external uterine layer. The operculum of the egg consists of a modification of the uterine and chitinous layers of the shell.

Animals↗
PubMed2003

[Egg shell calcification of the substernal goitre].

Seventy one years old woman admitted to our clinic with the complaints of fever, cough and palpitation. Physical examination revealed a palpable thyroid with a 2 cm in length in its isthmus and large right lobe. Kyphotic patient was tachycardic. Other systems were within normal limits. Chest x-ray performed wide upper mediastinum with calcified nodule approximately 3.5 cm in dimension in the apex of the left lung. Computed tomography revealed thyroid gland lying through the upper mediastinum and a mass 3.5 x 3.2 cm in dimension in the left lobe inferior regio of the gland surrounded with calcification. Thyroid function tests showed hyperthyroidism. Clinically patient had a substernal multinodular goitre. Since the lesion demonstrating egg shell calcification at the apex of left lung in the chest roentgenogram belonged to substernal goitre, the case was accepted interesting and presented below.

Aged↗
PubMedDate not supplied

Computed tomographic evaluation of dinosaur egg shell integrity.

The purpose of this study was to determine whether computed tomography (CT) could be used to identify hatching holes in partially embedded dinosaur eggs. One Faveololithus and two Dendroolithus eggs were examined using a fourth generation CT scanner. The eggs were partially embedded in a fossilized sediment matrix, with the exposed portion of the shell appearing intact. In CT images of all three eggs, the shells appeared hyperdense relative to the matrix. Hatching holes were visible as large gaps in the embedded portion of the shell, with inwardly displaced shell fragments. It was concluded that CT is an effective technique for nondestructively assessing dinosaur egg shell integrity.

Animals↗
PubMed1998

Egg shell colour is affected by laying cage design.

1. When laying hens are stressed some retain their eggs in the shell gland beyond the normal time of laying and this can result in the deposition of extra-cuticular calcium which makes brown eggs appear paler. 2. Three different types of enriched modified cage were compared: the location where eggs were laid was recorded and shell colour was measured using a reflectometer. 3. In 2 types of cage with enclosed nest boxes more eggs (80%) were laid in the nests than in a design with nest hollows in the open part of the cage (41%). 4. The eggs from the cages with enclosed nests were darker (had less extraneous calcium) than those with open nest hollows. This implies that in the designs with nest boxes fewer eggs had been retained and the hens may have been less stressed. 5. The results support previous evidence that to reduce stress and improve welfare it is desirable to provide enclosed nest sites for caged laying hens.

Animals↗
PubMed1985

Penetration of ovicidal fungi through altered egg-shells of Ascaris suum.

Ovicidal activity was studied in microscopic fungi penetrating into and destroying eggs of geohelminths surviving in the soil. The character of penetration was compared in eggs obtained mechanically with those obtained by means of a chemical process. A total of 13 strains of ovicidal fungi of 4 species were studied. The shells of eggs obtained by the chemical process were so altered that under the same conditions they were attacked and penetrated by the fungi much more than the eggs obtained by a mechanical way. The advantages and disadvantages of these two methods of eggs isolation are discussed.

Animals↗