The effects of exposure to a 900 MHz electromagnetic field on the hatchability of domestic chicken embryos (Gallus gallus domesticus)

2016 ◽  
Vol 12 (4) ◽  
pp. 73-81
Author(s):  
Krzysztof Pawlak ◽  
Zenon Nieckarz ◽  
Marcin Lis ◽  
Bartosz Bojarski ◽  
Barbara Tombarkiewicz ◽  
...  

From the second half of the 20th century there has been a rapid increase in electromagnetic radiation (EMR), generated in part by mobile phone networks. The aim of the study was to examine the effects of an electromagnetic field (EMF) with a frequency of 900 MHz on the hatchability of chicken embryos. The experimental groups were exposed to the electromagnetic field during the entire incubation period, for 10x4 minutes per day or 1x40 minutes per day. The results obtained indicate that an electromagnetic field with a frequency of 900 MHz, irrespective of the duration of a single exposure, significantly accelerates the process of pipping and hatching. In the experimental groups subjected to electromagnetic radiation the time between pipping and hatching was reduced. No influence of the 900 MHz EMF was observed on the hatching rate, number of developmental defects in the embryos, body weight, or the number of culled chicks.

Animals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 777
Author(s):  
Korakot Nganvongpanit ◽  
Piyatida Kaewkumpai ◽  
Varankpicha Kochagul ◽  
Kidsadagon Pringproa ◽  
Veerasak Punyapornwithaya ◽  
...  

The black-bone chicken (Gallus gallus domesticus) is a breed of chicken that is commonly found in Thailand. This breed is known for having a number of black colored organs. Consumers have been notably attracted to the black-bone chicken breed for the characteristic darkness that is observed in many of its organs. However, the degree of darkness in all organs of the black-bone chicken is still in question. Importantly, there have not yet been any published reports on the distribution of melanin pigment in the organs of the black-bone chicken. This research study aims to examine the distribution of the melanin pigment in 33 organs of the Thai black-bone chicken. Ten black-bone chickens (five male, five female) were included in this study. Thirty-two organs including the brain, spinal cord, sciatic nerve, larynx, trachea, syrinx, lungs, heart, pericardium, aorta, brachial vein, kidney, cloaca, oviduct, testis, gastrocnemius muscle, femur, tongue, esophagus, crop, proventriculus, gizzard, duodenum, jejunum, ileum, cecum, pancreas, liver, gall bladder, omentum, abdominal fat, spleen, and skin were examined in this study. Histological sections taken from tissue samples of each of these organs were studied. The findings revealed that the presence of the melanin pigment was not significantly different (p > 0.005) between male and female specimens. Notably, the liver was the only organ in which the melanin pigment had not accumulated. Consequently, there was not a uniform pattern of melanin pigment accumulation throughout the organs of the chickens. The melanin pigment was present in all of the tissue layers of most organs, while the melanin pigment was found in only specific layers of some of the organs. In conclusion, the distribution of melanin pigmentation in the organs of each of the animals in this study was found to be different. However, in some tissue samples, such as those obtained from the liver, no accumulation of the melanin pigment was observed.


Proceedings ◽  
2020 ◽  
Vol 76 (1) ◽  
pp. 2
Author(s):  
Alexey V. Rakov ◽  
Anatoly A. Yakovlev ◽  
Viacheslav V. Sinkov

Salmonella enterica subsp. enterica serovar Enteritidis is one of the most common zoonotic pathogens. We report here the genome sequence of Salmonella enterica subsp. enterica serovar Enteritidis S-25048 isolated from chicken (Gallus gallus domesticus) meat in Artyom, Russia. The assembled genome size was 4,695,145 bp. A total of 4565 coding genes, four rRNAs, 62 tRNAs, and 14 noncoding RNAs were predicted. To our knowledge, this is the first publically deposited annotated genome of this serovar isolated in Russia. The Salmonella Enteritidis S-25048 genome is suitable for use as a reference strain of Salmonella Enteritidis isolated in Russia.


Author(s):  
Webster Leonardo Guimarães da Costa ◽  
Isa Marianny Ferreira Nascimento Barbosa ◽  
Débora Pereira Gomes do Prado ◽  
Natália Domann ◽  
Hanstter Hallison Alves Rezende

2020 ◽  
Vol 23 (4) ◽  
pp. 769-780 ◽  
Author(s):  
Vitor Hugo Bessa Ferreira ◽  
Maxence Barbarat ◽  
Flore Lormant ◽  
Karine Germain ◽  
Mathilde Brachet ◽  
...  

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