Results 101 to 110 of about 10,438 (251)

Alternative Developmental Toxicity Screening Methods Using Chick Embryo‐Based Models

Journal of Applied Toxicology, EarlyView.
ABSTRACT Nonclinical developmental toxicity studies are used to investigate the potential toxicities of drugs and chemical candidates on normal embryonic and fetal development during pregnancy, generally using mammalian laboratory animals such as rats and rabbits.
Jeong Hwan Kim, Cheoljin Park, Donghee Kim, Wonjun Jeong, Jinsoo Lee   +4 more
wiley   +1 more source

Influence of the Interval of Shell Deposition on Eggshell Quality

Poultry Science, 1980
Abstract After selection for three generations, thick- and thin-shelled lines of Single Comb White Leghorns (SCWL) were developed which produced eggs having means of 10.7 and 7.9% shell, respectively, at twleve months of age. The average time interval between ovipositions of the first and second eggs in a laying cycle at 16 months of age was 27 hr 20
J.T. STOUT, E.G. BUSS
openaire   +1 more source

Environmental factors in the production of vitreous eggshell, egg quality and spectroscopy of eggshell

, 2018
The vitreous eggshell is often on farms at retail points, however, the literature on the subject in question is scarce. Therefore, the objective of this study was to evaluate the influence of temperature and air humidity and the age of laying hens on the
Carvalho, Letícia Souza Silva
core   +1 more source

Nanoplastics: Methods, Exposure and Effects on Domestic, Farm and Wild Animals

Journal of Applied Toxicology, EarlyView.
ABSTRACT Nanoplastics (NPs) are synthetic polymer particles ranging in size from 1 nm to 1 μm that have been identified as a major concern for ecosystems and organisms due to their plethora of negative effects. The aim of this review is to provide a comprehensive overview of the knowledge relating to exposure and effects of NPs in domestic (i.e., farm ...
B. De Felice, M. Bertazzo, A. F. Tabaran, M. Parolini, R. P. Popa, A. Pintea, L. J. Spicer, A‐L. Nagy, F. Caloni   +8 more
wiley   +1 more source

Research on eggshell structure and quality: an historical overview [PDF]

Revista Brasileira de Ciência Avícola, 2005
The eggshell is an important structure for two reasons. Firstly it forms an embryonic chamber for the developing chick, providing mechanical protection and a controlled gas exchange medium. Secondly it is a container for the market egg, providing protection of the contents and a unique package for a valuable food. The superficial structure of the shell
openaire   +4 more sources

Analysis of Gene Expression in Aedes aegypti Suggests Changes in Early Genetic Control of Mosquito Development

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, EarlyView.
ABSTRACT Aedes aegypti, a critical vector for tropical diseases, poses significant challenges for studying its embryogenesis due to difficulties in removing its rigid chorion and achieving effective fixation for in situ hybridization. Here, we present novel methodologies for fixation, dechorionation, DAPI staining, and in situ hybridization, enabling ...
Renata Coutinho‐dos‐Santos, Danielle Santos, Lupis Ribeiro, Jonathan J. Mucherino‐Muñoz, Marcelle Uhl, Carlos Logullo, A. Mendonça‐Amarante, M. Fantappie, Rodrigo Nunes‐da‐Fonseca   +8 more
wiley   +1 more source

The Physical and Chemical Characteristics of Eggshell Waste as Phosporus Fortification: its Effect on Egg Production and Eggshell Quality of Laying Hens [PDF]

, 2012
Two experiments were conducted to investigate the physical and chemical characteristic of phosphorus fortified eggshell waste by phosphoric acid and its effect on egg production and eggshell quality of laying hens.
Kismiati, Sri, Supadmo, Supadmo, Yuwanta , Tri, Zuprizal, Zuprizal   +3 more
core  

Microemulsion‐Based Drilling Fluids Incorporating Seashell Residue Powder: A Sustainable Approach to Fluid Loss Control

Journal of Surfactants and Detergents, EarlyView.
Two microemulsion‐based drilling fluids incorporating SSRP were formulated using pine oil, the nonionic surfactant Alkonat L100W, and a glycerol/water solution. The results provide valuable insights into how surfactant‐assisted microemulsion systems can be engineered to enhance the performance and eco‐efficiency of drilling fluids.
Luara Ribeiro Viana, Raphael Ribeiro da Silva, João Pedro Gonçalves de Souza Soares, José Cavalcante de Queiroz Neto, Maria Eduarda Araújo Pessoa, Rafael Peixoto Alves, Fabiola Dias da Silva Curbelo   +6 more
wiley   +1 more source

How I Do It: Two Novel, Low‐Cost Phonomicrosurgery Models With Open‐Source, 3D‐Printed Laryngoscopes

The Laryngoscope, EarlyView.
Two new vocal fold microflap models using products found in any grocery store have been developed along with publicly available 3D‐printable parts for simulating multiple laryngoscopes commonly used during laryngeal phonomicrosurgery. This represents a low cost, easily reproducible model for basic laryngeal phonomicrosurgery training.
Sapir Pinhas, Ari D. Schuman, Itamar Pinhas, Aaron D. Friedman   +3 more
wiley   +1 more source

Use of data mining algorithms in prediction of eggshell thickness from egg quality traits of Potchefstroom Koekoek layers

Scientific Reports
Egg quality is affected by lot of factors. Study was conducted to compare performance of data mining algorithms; Classification and regression tree (CART), Chi-square automatic interaction detection (CHAID), Exhaustive chi-square automatic interaction ...
Kagisho Madikadike Molabe, Thobela Louis Tyasi, Vusi Gordon Mbazima   +2 more
doaj   +1 more source