Results 91 to 100 of about 26,916 (317)

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

The Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

A Study on the Relationship Between Eggshell Color and Eggshell Quality in Commercial Broiler Breeders

International Journal of Poultry Science, 2008
In this experiment, two trials were conducted to determine whether broiler breeder eggshell color could be used as an easy means of predicted eggshell quality. In Trial 1, 4320 commercial broiler breeder eggs were obtained. Specific gravity (SG) was measured and color determined on the eggs on the day of lay.
D.R. Ingram, L.F. Hatten III, K.D. Homan
openaire   +1 more source

Endothermy, neuron counts, and other issues: Further remarks on neurocognitive evolution in fossil vertebrates

The Anatomical Record, EarlyView.
Abstract Last year, we challenged the view that large‐bodied theropod dinosaurs such as Tyrannosaurus rex resembled primates in cognition and behavior, a proposition made by Herculano‐Houzel in 2023. More recently, Jensen et al. have criticized our work on this topic, raising methodological and conceptual issues.
Kai R. Caspar, Cristián Gutiérrez‐Ibáñez, Hady George, Thomas R. Holtz Jr., Darren Naish, Grant R. Hurlburt   +5 more
wiley   +1 more source

Effect of housing system and age of laying hens on eggshell quality, microbial contamination, and penetration of microorganisms into eggs

Czech Journal of Animal Science, 2018
Hens of the laying hybrid ISA Brown were used in the study with the objective to evaluate eggshell quality, microbial contamination of eggshells, and penetration of microorganisms into the egg content in different housing systems (enriched cage: 60 hens,
Jana Vlčková, Eva Tůmová, Mohamed Ketta, Michaela Englmaierová, Darina Chodová   +4 more
doaj   +1 more source

Host species determines egg size in Oriental cuckoo [PDF]

, 2018
© 2018 The Zoological Society of London.The Oriental cuckoo Cuculus optatus is an obligate brood parasite associated with species of the genus Phylloscopus.
Bachurin, Balatsky, Balatsky, Balatsky, Balatsky, Brazil, Bán, Chunihin, Cramp, Cramp, Crawley, Davies, Dawkins, Egorov, Erritzøe, Fossøy, Fossøy, Gaston, Gibbs, Gill, Hargitai, Johnsgard, King, Kislenko, Kislenko, Korelov, Krist, Krüger, Kuzikov, Latter, Litvinenko, Logan, Makatsch, Marchetti, Marchetti, Meshcheryagina, Meshcheryagina, Mitiay, Moksnes, Moksnes, Murav'ev, Numerov, Numerov, Payne, Payne, Pukinsky, R Core Team, Ryabitsev, Schönwetter, Shcherbakov, Sokolov, Tuero, Vikan, Xia, Yang   +54 more
core   +2 more sources

Improving eggshell quality at high temperatures with dietary sodium bicarbonate

Poultry Science, 1997
Two experiments were conducted that confirmed the hypothesis that a dietary bicarbonate supplement will improve eggshell quality in hens at high temperatures as long as feed is consumed during the period of eggshell formation. End-of-lay hens were maintained on continuous light at temperatures of 30 and 35 C.
D, Balnave, S K, Muheereza
openaire   +2 more sources

Heat Stress and Gut Microbiome Dynamics in Poultry: Interplay, Consequences, and Mitigation Strategies

Animal Research and One Health, EarlyView.
Heat stress disrupts gut microbial balance in poultry, impairing nutrient absorption and immunity. This review outlines the interplay between thermal stress and microbiome dynamics and discusses integrative mitigation strategies, probiotics, phytogenics, cooling systems, and genetic adaptation to enhance poultry resilience.
O. E. Oke, A. I. Oni, O. A. Akosile, K. M. Oliyide, C. A. Ishola, M. O. Logunleko, O. A. Jimoh, C. P. Njoku, L. O. Fasasi, V. A. Uyanga   +9 more
wiley   +1 more source

Evidence for late polynesian colonization of New Zealand: University of Waikato radiocarbon measurements [PDF]

, 1997
We present radiocarbon determinations for 271 New Zealand archaeological samples measured at the University of Waikato Radiocarbon Dating Laboratory between 1975 and 1995.
Higham, Thomas F.G., Hogg, Alan G.
core   +3 more sources

Productive performance, eggshell quality, and eggshell ultrastructure of laying hens fed diets supplemented with organic trace minerals

Poultry Science, 2014
This study was carried out with the purpose of evaluating the effect of supplementing hens' diets with trace minerals from inorganic or organic sources on the productive performance, eggshell quality, and eggshell ultrastructure of laying hens. Three hundred sixty Hy-Line W36 laying hens between 47 to 62 wk of age were used and distributed in a ...
C, Stefanello, T C, Santos, A E, Murakami, E N, Martins, T C, Carneiro   +4 more
openaire   +2 more sources

Valorization of fishing industry by‐products for biodiesel production: Unlocking the potential of residual fish oil

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Fishing waste and its by‐products, whether naturally occurring or generated by the processing industry, represent a significant opportunity for producing high‐value products. These often discarded or underutilized residues can be converted into various valuable products through advanced processing technologies. Among the potential products are
Patrick da Silva Sousa, Francisco Simão Neto, Paulo Gonçalves de Sousa Junior, Francisco Izaias da Silva Aires, Calebe da Rocha Silva, Kaiany Moreira dos Santos, Viviane de Castro Bizerra, Maria Alexsandra Sousa Rios, José Cleiton Sousa dos Santos   +8 more
wiley   +1 more source