Results 61 to 70 of about 3,358 (187)

Epigenetic Aging in Brain Tissue of the Self‐Fertilizing Vertebrate, Kryptolebias marmoratus

Ecology and Evolution, Volume 16, Issue 6, June 2026.
Using the self‐fertilizing vertebrate Kryptolebias marmoratus, we developed an epigenetic clock from brain tissue that predicts chronological age with high accuracy, demonstrating that DNA methylation changes consistently with age even in the near absence of genetic variation. The 40 age‐associated CpG sites identified map to genes with conserved roles
Justine Bélik, Frédéric Silvestre
wiley   +1 more source

Using processed feeds for laying quails (Coturnix coturnix japonica)

Brazilian Journal of Poultry Science, 2008
The aim of this experiment was to determine the productive performance and egg quality of Japanese quails fed different types of processed rations (mash, extruded, or pelleted). One hundred and forty-four 18-w-old quails (Coturnix coturnix japonica) were
AE Murakami, LMG Souza, MI Sakamoto, JIM Fernandes   +3 more
doaj   +1 more source

Genome Mining Approaches for Toxicant Discovery: A Case Study Examining Receptor Proteins for Pest Management in New Zealand

New Zealand Journal of Zoology, Volume 53, Issue 2, June 2026.
Pest control is a global challenge for agriculture and biodiversity conservation, with the use of existing vertebrate pesticides increasingly constrained by regulatory, environmental, and social pressures. There is an urgent need for safer and more species‐selective toxicants, but the development of novel vertebrate pesticides remains technically ...
Erica R. Hendrikse, Natalie J. Forsdick, Wanting Jiao, Brian Hopkins   +3 more
wiley   +1 more source

The Larger the Egg, the Safer the Nest: A Study on the Negative Correlation Between Nest Predation Rates and Egg Size of Two Tropical Phasianids in Hainan

Ecology and Evolution, Volume 16, Issue 5, May 2026.
There is a lack of research on the predation of tropical pheasant nests. The study conducted artificial nest experiments based on egg size and we have supported the viewpoint that using experimental eggs matched in size with those of natural eggs improves the accuracy of artificial nest simulation studies. ABSTRACT Nest predation is the principal cause
Yuhan Zhang, Yishuo Ding, Yuxin Xu, Qingling Zeng, Xiaodong Rao   +4 more
wiley   +1 more source

A PCR-RFLP Method for Distinguishing Closely Related Common Quail (Coturnix coturnix) and Japanese Quail (Coturnix japonica): Forensics and Conservation Implications

Birds
The genus Coturnix, comprising migratory Old World quails, includes Common Quail (Coturnix coturnix) and Japanese Quail (Coturnix japonica), which are nearly indistinguishable morphologically.
Prateek Dey, Kochiganti Venkata Hanumat Sastry, Ram Pratap Singh   +2 more
doaj   +1 more source

Quail performance and egg quality at the end of production fed with varying levels of calcium

Semina: Ciências Agrárias, 2016
The goal of the present study was to evaluate the influence of increasing levels of dietary calcium on performance, egg quality, and the amount of calcium retained in the meat and excreted by Japanese quails at the final production.
Daniele Santos de Souza, Lígia Fátima Lima Calixto, Marina Jorge Lemos, Carlos Alberto da Silva Filho, Thiers Pascoal Pinho, Cleriston Andrade Machado, Izaura Andrade de Melo, Cristina Kimie Togashi   +7 more
doaj   +1 more source

The Folacin Requirements of Broiler Chicks and Quail (Coturnix coturnix japonica)

Poultry Science, 1977
Six experiments were conducted to investigate the effect of dietary composition on the folacin requirement of broiler chicks and to determine the folacin requirement of growing Japanese quail. The folacin requirement of both chicks and quail could not be determined when an isolated soybean protein based diet containing 0.44 mg. folacin per kilogram was
P C, Wong, P, Vohra, F H, Kratzer
openaire   +2 more sources

Chlorine requirement for Japanese laying quails

Revista Brasileira de Zootecnia, 2012
The objective of this study was to determine the chlorine nutritional requirement of Japanese Quails during the laying phase, based on performance and egg quality parameters. A total of 240 Japanese quails were distributed according to a randomized block
Fernando Guilherme Perazzo Costa, Jalceyr Pessoa Figueiredo Júnior, Denise Fontana Figueiredo Lima, Cláudia de Castro Goulart, José Humberto Vilar da Silva, Matheus Ramalho de Lima, Sarah Gomes Pinheiro, Valéria Pereira Rodrigues   +7 more
doaj   +1 more source

Influência da espermatogênese e dos níveis de testosterona no aspecto reprodutivo de codornas Spermatogenesis and testosterone levels influence on reproductive aspects of Japanese quails

Revista Brasileira de Zootecnia, 2008
Analisaram-se os níveis de testosterona, o peso corporal, os pesos testiculares relativos e absolutos, a espessura da túnica albugínea, a altura do epitélio germinativo, o diâmetro e o número de figuras de meiose dos túbulos seminíferos dos testículos de
Lizandra Amoroso, Silvana Martinez Baraldi Artoni, Vera Maria Barbosa de Moraes, Dilermano Perecin, Vanessa Sobue Franzo, Patrícia Amoroso   +5 more
doaj   +1 more source

Reproductive Response to Intermittent Light Regimens in Coturnix coturnix japonica

Poultry Science, 1975
The effect of intermittent light regimens of one hour of light interspaced with dark periods of one, two or three hours, repeated three, four, five or six times per day was determined for age to first egg, hen day percent production and egg production for a 126 day experimental period in females, and the age to initial response of the cloacal gland in ...
W L, Bacon, K E, Nestor
openaire   +2 more sources