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https://www.readbyqxmd.com/read/29452393/no-copper-supplementation-in-a-corn-soybean-basal-diet-has-no-adverse-effects-on-late-phase-laying-hens-under-normal-and-cyclic-high-temperatures
#1
W X Li, Y Q Chen, L H Zhao, Q G Ma, J Y Zhang, C Ji
Over supplementation of copper (Cu) in animal diets may cause serious pollution in soil, water and harvested crops. To minimize the potential pollution, the effects of corn-soybean basal diet with or without supplementation of 8 mg Cu/kg on laying performance, plasma biochemical metabolic indices, and antioxidant status in laying hens were evaluated under normal and cyclic high temperatures. A total of 240 Hy-Line Brown laying hens were randomly allotted to 4 treatments with 6 replicates of 10 hens per replicate according to factorial design involved in 2 temperatures [normal temperature (NT) vs...
February 14, 2018: Poultry Science
https://www.readbyqxmd.com/read/29452390/effects-of-storage-conditions-on-hatchability-embryonic-survival-and-cytoarchitectural-properties-in-broiler-from-young-and-old-flocks
#2
N Pokhrel, E Ben-Tal Cohen, O Genin, M Ruzal, D Sela-Donenfeld, Y Cinnamon
Storing eggs at low temperature prior to incubation is common practice in the broiler hatchery industry; however, prolonged storage (beyond 7 d) is known to increase early embryonic mortality and reduce chick quality and performance. To better understand the basis of this mortality, we previously published milestone criteria to evaluate morphological and cellular properties of the freshly laid embryo. Using these criteria, in the present study we checked the effects of storage at 18°C and 12°C for up to 28 d on hatchability and chick quality...
February 14, 2018: Poultry Science
https://www.readbyqxmd.com/read/29452311/phylogenetic-relationships-and-cryptic-species-diversity-in-the-brazilian-egg-brooding-tree-frog-genus-fritziana-mello-leit%C3%A3-o-1937-anura-hemiphractidae
#3
Marina Walker, Mariana L Lyra, Célio F B Haddad
The genus Fritziana (Anura: Hemiphractidae) comprises six described species (F. goeldii, F. ohausi, F. fissilis, F. ulei, F. tonimi, and F. izecksohni) that are endemic to the Brazilian Atlantic Forest. Although the genus has been the subject of studies dealing with its taxonomy, phylogeny, and systematics, there is considerable evidence for cryptic diversity hidden among the species. The present study aims to understand the genetic diversity and phylogenetic relationships among the species of Fritziana, as well as the relationships among populations within species...
February 13, 2018: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/29452261/maternal-betaine-administration-modulates-hepatic-type-1-iodothyronine-deiodinase-dio1-expression-in-chicken-offspring-through-epigenetic-modifications
#4
Zhen Hou, Qinwei Sun, Yun Hu, Shu Yang, Yibo Zong, Ruqian Zhao
As a feed additive, betaine is widely used in livestock production for its ability to promote growth. Our previous studies had reported that maternal betaine supplementation altered hepatic metabolism in offspring. But it remains unknown whether and how maternal betaine modulates metabolism of thyroid hormones in the offspring chickens by epigenetic modification. In this study, one hundred and twenty Rugao yellow-feathered laying hens were randomly divided into two groups, and were fed basal diet with or without 0...
February 13, 2018: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/29452084/successful-reproduction-of-unmated-tropilaelaps-mercedesae-and-its-implication-on-mite-population-growth-in-apis-mellifera-colonies
#5
Lilia I de Guzman, Patcharin Phokasem, Kitiphong Khongphinitbunjong, Amanda M Frake, Panuwan Chantawannakul
Successful reproduction by unmated Tropilaelaps mercedesae is reported here for the first time. Of the eight mature daughters that did not have male mates within their natal cells, four produced both mature sons and daughters, and four produced mature daughters only. Overall, 78% of the new daughters that had no egg-laying experience, and 84% of the foundresses that had or had not laid previously reproduced. Both inoculum daughter and foundress mites were collected from tan-bodied pupae and inoculated immediately...
February 13, 2018: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29451850/determination-of-14-aminoglycosides-by-lc-ms-ms-using-molecularly-imprinted-polymer-solid-phase-extraction-for-clean-up
#6
Marie-Claude Savoy, Pei Mun Woo, Pauline Ulrich, Adrienne Tarres, Pascal Mottier, Aurélien Desmarchelier
A LC-MS/MS method for screening fourteen aminoglycosides in foodstuffs of animal origin is presented. Its scope includes raw materials and processed ingredients but also finished products composed of milk, meat, fish, egg or fat. Aminoglycosides are extracted in an acidic aqueous solution, which is first recovered after centrifugation, then diluted with a basic buffer and finally purified by molecularly imprinted polymer-solid phase extraction (MIP-SPE). Analytes are detected within 8 min by ion-pair reversed phase LC-MS/MS...
February 16, 2018: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/29451849/a-comprehensive-review-of-eggs-choline-and-lutein-on-cognition-across-the-life-span
#7
Taylor C Wallace
In 2030, one in five Americans will be older than 65 years, and with that an increase in the number of individuals who experience loss in cognitive capacity is to be expected. At the same time, nutrition within the first 1000 days postconception has been suggested to strongly influence cognitive outcomes across the life-span in humans. Eggs are a primary source of both choline and the xanthophyll carotenoid lutein in the western diet, and both have been suggested to influence cognitive function in humans. This comprehensive review critically examines the effects of eggs, choline, and lutein on cognition across the life-span...
February 16, 2018: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/29450902/identification-and-expression-profiles-of-novel-odorant-binding-proteins-and-functional-analysis-of-obp99a-in-bactrocera-dorsalis
#8
Jing Zhang, Deye Luo, Peng Wu, Haozhe Li, Hongyu Zhang, Weiwei Zheng
Odorant-binding proteins (OBPs) in insects are essential for mating and oviposition host selection. How these OBPs respond to different hosts at the mRNA level and their effects on behavior remain poorly characterized. The oriental fruit fly Bactrocera dorsalis is a highly invasive agricultural pest with an extremely broad host range and high fecundity. Based on our previously constructed B. dorsalis transcriptome, six OBPs that were differentially expressed during three different physiological adult stages were identified...
February 16, 2018: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/29450860/morphological-characterization-of-helicoverpa-armigera-h%C3%A3-bner-lepidoptera-noctuidae-heliothinae
#9
L Queiroz-Santos, M M Casagrande, A Specht
The cotton bollworm Helicoverpa armigera (Hübner) is a widespread lepidopteran pest found in various crops worldwide. This highly polyphagous species, commonly found both in the Old and New World, has caused significant economic damage as an invasive agricultural pest in Brazil since 2013. The goal of the present study is to provide a detailed morphological assessment of adults and immature stages of H. armigera, as this species is often confused with H. zea (Boddie), a congeneric species that is native to the New World...
February 15, 2018: Neotropical Entomology
https://www.readbyqxmd.com/read/29448923/data-driven-predictions-and-novel-hypotheses-about-zoonotic-tick-vectors-from-the-genus-ixodes
#10
Laura Hyesung Yang, Barbara A Han
BACKGROUND: With the resurgence of tick-borne diseases such as Lyme disease and the emergence of new tick-borne pathogens such as Powassan virus, understanding what distinguishes vectors from non-vectors, and predicting undiscovered tick vectors is a crucial step towards mitigating disease risk in humans. We aimed to identify intrinsic traits that predict which Ixodes tick species are confirmed or strongly suspected to be vectors of zoonotic pathogens. METHODS: We focused on the well-studied tick genus Ixodes from which many species are known to transmit zoonotic diseases to humans...
February 15, 2018: BMC Ecology
https://www.readbyqxmd.com/read/29448602/preparation-of-silica-coated-magnetic-nanoparticles-for-bioseparation
#11
Dae-Won Lee, Hira Fatima, Kyo-Seon Kim
Magnetic nanoparticles have been intensively developed and applied in several biomedical applications such as targeted delivery, drug therapy, hyperthermia, magnetic resonance imaging and bioseparation etc. This work describes a simple and convenient method to synthesize silica coated Fe3O4 nanoparticles which have the potential to be used in the bioseparation of fetuin from fetal bovine serum and albumin from the egg. In this work, uniform Fe3O4 particles were prepared through the one-pot solvothermal process at 200 °C for 12 h using a sole iron precursor (FeCl3 · 6H2O) and then were coated with SiO2 to prepare silica coated Fe3O4 nanoparticles by hydrolysis and condensation of tetraethyl orthosilicate in ethanol and H2O medium...
February 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29447661/ethical-quandaries-around-expanded-carrier-screening-in-third-party-reproduction
#12
REVIEW
Heidi Mertes, Steven R Lindheim, Guido Pennings
Although current screening methods of gamete donors are capable of reducing the incidence of genetic anomalies in donor offspring below general population levels, targeted screening for a large number of conditions (expanded carrier screening or ECS) could be considered as part of the routine selection procedure for gamete donors. There are, however, important drawbacks to its practical implementation. Excluding all carriers of severe recessive monogenic pediatric disorders would disqualify virtually all donors, and other approaches negatively affect cost (and therefore access), present dilemmas in regard to disclosure of genetic findings, and/or overburden the intended parents...
February 2018: Fertility and Sterility
https://www.readbyqxmd.com/read/29447477/inhibition-of-the-lethality-of-shiga-like-toxin-1-by-functional-gold-nanoparticles
#13
Chun-Hsien Li, Yi-Ling Bai, Yu-Chie Chen
Escherichia coli O157:H7 is a pathogen, which can generate Shiga-like toxins (SLTs) and cause hemolytic-uremic syndrome. Foodborne illness outbreaks caused by E. coli O157:H7 have become a global issue. Since SLTs are quite toxic, effective medicines that can reduce the damage caused by SLTs should be explored. SLTs consist of a single A and five B subunits, which can inhibit ribosome activity for protein synthesis and bind with the cell membrane of host cells, respectively. Pigeon ovalbumin (POA), i.e. a glycoprotein, is abundant in pigeon egg white (PEW) proteins...
February 15, 2018: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29447185/egg-turning-behavior-and-incubation-temperature-in-forster-s-terns-in-relation-to-mercury-contamination
#14
Gregory T Taylor, Joshua T Ackerman, Scott A Shaffer
Egg turning behavior is an important determinant of egg hatchability, but it remains relatively understudied. Here, we examined egg turning rates and egg temperatures in Forster's terns (Sterna forsteri). We used artificial eggs containing a data logger with a 3-D accelerometer, a magnetometer, and a temperature thermistor to monitor parental incubation behavior of 131 tern nests. Overall, adults turned their eggs an average (±SD) of 3.8 ± 0.8 turns h-1, which is nearly two times higher than that of other seabirds...
2018: PloS One
https://www.readbyqxmd.com/read/29447147/assisted-reproductive-technology-surveillance-united-states-2015
#15
Saswati Sunderam, Dmitry M Kissin, Sara B Crawford, Suzanne G Folger, Sheree L Boulet, Lee Warner, Wanda D Barfield
PROBLEM/CONDITION: Since the first U.S. infant conceived with assisted reproductive technology (ART) was born in 1981, both the use of ART and the number of fertility clinics providing ART services have increased steadily in the United States. ART includes fertility treatments in which eggs or embryos are handled in the laboratory (i.e., in vitro fertilization [IVF] and related procedures). Although the majority of infants conceived through ART are singletons, women who undergo ART procedures are more likely than women who conceive naturally to deliver multiple-birth infants...
February 16, 2018: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/29446749/the-seroprevalence-of-cystic-echinococcosis-in-a-rural-normal-population-southwestern-iran
#16
Molouk Beiromvand, Abdollah Rafiei, Esmat Panabad
INTRODUCTION: Cystic echinococcosis is a neglected zoonotic disease with worldwide distribution, which occurs mainly in pastoral regions. Echinococcus granulosus sensu stricto, is the main agent of human infection. Although Iran is an endemic area for CE in the Middle East, lack of data regarding the disease among rural inhabitants of Khuzestan province in recent years, persuaded us to perform the current study. METHODOLOGY: This cross-sectional study was conducted in 2016 using simple random sampling method in 15 villages of Shushtar county, southwestern Iran...
February 13, 2018: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/29446488/spatial-trends-in-a-biomagnifying-contaminant-application-of-amino-acid-compound-specific-stable-nitrogen-isotope-analysis-to-the-interpretation-of-bird-mercury-levels
#17
Svetlana Dolgova, Brian N Popp, Kevin Courtoreille, Rick H M Espie, Bruce Maclean, Mark McMaster, Jason R Straka, Gerald R Tetreault, Steve Wilkie, Craig E Hebert
Levels of biomagnifying contaminants are greatest in high trophic level biota, e.g. predatory birds such as gulls. Gull eggs have been used to assess contaminant spatial patterns and sources but such assessments must consider how organism trophic position may influence spatial inferences. Stable nitrogen isotopes (δ 15 N) in bulk tissue are routinely used in this context. However, bulk δ 15 N values are only useful if spatial differences in baseline δ 15 N values are considered. Amino acid-compound specific stable nitrogen isotope analysis (AA-CSIA) can generate estimates of baseline and trophic position δ 15 N from the same sample...
February 15, 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29445999/the-s190r-mutation-in-the-hemagglutinin-protein-of-pandemic-h1n1-2009-influenza-virus-increased-its-pathogenicity-in-mice
#18
Yongkun Chen, Tian Bai, Wenfei Zhu, Rongbao Gao, Zhihong Deng, Yi Shi, Shumei Zou, Yiwei Huang, Xiyan Li, Fangcai Li, Zhaomin Feng, Tao Chen, Jing Yang, Dayan Wang, Lidong Gao, Yuelong Shu
Human influenza viruses preferentially bind to sialic acid-α2,6-galactose (SAα2,6Gal) receptors, which are predominant in human upper respiratory epithelia, whereas avian influenza viruses preferentially bind to SAα2,3Gal receptors. However, variants with amino acid substitutions around the receptor-binding sites of the hemagglutinin (HA) protein can be selected after several passages of human influenza viruses from patients' respiratory samples in the allantoic cavities of embryonated chicken eggs. In this study, we detected an egg-adapted HA S190R mutation in the pandemic H1N1 virus 2009 (pdmH1N1), and evaluated the effects of this mutation on receptor binding affinity and pathogenicity in mice...
February 10, 2018: Science China. Life Sciences
https://www.readbyqxmd.com/read/29445834/the-combination-of-2-5-dihydroxybenzoic-acid-and-2-5-dihydroxyacetophenone-matrices-for-unequivocal-assignment-of-phosphatidylethanolamine-species-in-complex-mixtures
#19
Jenny Schröter, Annabelle Fülöp, Carsten Hopf, Jürgen Schiller
Unequivocal assignment of phospholipid peaks in complex mixtures is difficult if only the m/z values but no tandem mass spectrometry (MS/MS) data are available. This is usually the case for matrix-assisted laser/desorption ionization time-of-flight (MALDI-TOF) MS imaging experiments and the analysis has normally to be performed without prior separation. Another problem might be the often matrix-induced loss of one methyl group in phosphatidylcholine (PC) species, which makes them detectable as negative ions becoming isomers of some phosphatidylethanolamines (PEs)...
February 14, 2018: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29445315/surfaces-with-controllable-topography-and-chemistry-used-as-a-template-for-protein-crystallization
#20
Wester de Poel, Joris A W Münninghoff, Johannes A A W Elemans, Willem J P van Enckevort, Alan E Rowan, Elias Vlieg
Surfaces with controllable topography and chemistry were prepared to act as substrates for protein crystallization, in order to investigate the influence of these surface properties on the protein crystallization outcome. Three different methods were investigated to deposit 1,3,5-tris(10-carboxydecyloxy)benzene (TCDB) on a muscovite mica substrate to find the best route for controlled topography. Of these three, sublimation worked best. Contact angle measurements revealed that the surfaces with short exposure to the TCDB vapor (20 min or less) are hydrophilic, while surfaces exposed for 30 min or longer are hydrophobic...
February 7, 2018: Crystal Growth & Design
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