Exploration of key regulators driving primary feather follicle induction in goose skin

Gene ◽  
2020 ◽  
Vol 731 ◽  
pp. 144338
Author(s):  
Xuewen Hu ◽  
Xiaokang Zhang ◽  
Zhiwei Liu ◽  
Shaomei Li ◽  
Xinting Zheng ◽  
...  
Keyword(s):  
Primary Feather ◽  
Feather Follicle

PRIMARY FEATHER FOLLICLE ABLATION IN COMMON PINTAILS (ANAS ACUTA ACUTA) AND A WHITE-FACED WHISTLING DUCK (DENDROCYGNA VIDUATA)

2012 ◽  
Vol 43 (2) ◽  
pp. 342-346 ◽  
Author(s):  
Shannon N Shaw ◽  
Jennifer J D'Agostino ◽  
Michelle R Davis ◽  
Elizabeth A McCrae
Keyword(s):  
Primary Feather ◽  
Anas Acuta ◽  
Feather Follicle

Isolation and identification of Marek’s disease virus (MDV) from feather follicle epithelium and internal organs of diseased chickens in Dakahlia Governorate, Egypt

2019 ◽  
Vol 20 (2) ◽  
pp. 6-11
Author(s):  
Aly El-Kenawy ◽  
Mohamed El-Tholoth ◽  
Emad A
Keyword(s):  
Real Time ◽  
Disease Virus ◽  
Real Time Pcr ◽  
Marek's Disease Virus ◽  
Marek's Disease ◽  
Marek’S Disease Virus ◽  
Marek’S Disease ◽  
Field Samples ◽  
Feather Follicle ◽  
Positive Results

In the present study, a total of 16 samples including feather follicle epithelium, ovary, spleen and kidney (4 samples for each organ) were collected from diseased chicken flocks suspected to be infected with Marek’s disease virus (MDV) at Dakahlia Governorate, Egypt during the period from October 2016 to October 2017. Each sample was pooled randomly from three to five birds (90 to 360 days old). The isolation of the suspected virus from the collected samples was carried out via chorioallantoic membranes (CAMs) of 12 days old embryonated chicken eggs (ECEs). Three egg passages were carried out for each sample. Hyperimmune serum was prepared against standard MDV. MDV in both field and egg passaged samples (after 3rd passage) was identified by agar gel precipitation test (AGPT) and indirect fluorescence antibody test (IFAT). Molecular identification of virus was carried out by conventional polymerase chain reaction (PCR) and real- time PCR in four selected samples. The results revealed that 14 samples (87.5%) including 4 (100%) samples from feather follicle epithelium, ovary and kidney and 2 (50%) samples from spleen, showed positive results in virus isolation after 3rd passage. The positive results percentage by AGPT for field samples were 50% (8 out of 16 samples), while after the 3rd passage in ECEs were 37.5% (6 out of 16 samples) and the positive results percentage by IFAT for field samples were 62.5% (10 out of 16 samples), while after the 3rd passage in ECEs were 81.25 % (13 out of 16 samples). Viral nucleic acid was detected in all selected samples by conventional and real- time PCR. The results indicate that feather follicle epithelium is the best organ for MDV detection. IFAT is superior over AGPT in virus detection. Conventional and real - time PCR could be efficiently used for molecular detection of the virus.

scholarly journals A revision of bird skin preparation aimed at improving the scientific value of ornithological collections

2021 ◽  
pp. 175815592098715
Author(s):  
José Carrillo-Ortiz ◽  
Santi Guallar ◽  
Jessica Martínez-Vargas ◽  
Javier Quesada
Keyword(s):  
The Body ◽  
Biological Knowledge ◽  
Specimen Preparation ◽  
Preparation Technique ◽  
Tarsus Length ◽  
Skin Preparation ◽  
Primary Feather ◽  
Preparation Methods ◽  
Wing Chord ◽  
Scientific Value

The methods used to preserve bird skins in museums have a potentially crucial impact on the feasibility and use of these specimens as a source of biological knowledge, although this subject is rarely broached. Study skins of birds are usually prepared with folded wings and straight legs to facilitate storage in the collection; yet, this method can hamper the measurement and examination of certain important features such as wing-feather moult. To make consultation easier for ornithologists, alternative preparation methods such as the splitting of wings and tarsi from the rest of the animal have been proposed by curators. Our aim was to study whether or not preparing bird specimens with spread limbs makes consultation simpler. First, we used two different methods to prepare two specimens each of two common European passerine species: (1) ‘traditional’ (folded wings and straight tarsi) and (2) ‘spread’ (limbs spread on one side of the body). Then, we asked 22 experienced ornithologists to identify moult limits and take three biometric measurements (wing chord, length of the third primary feather and tarsus length) from all four specimens. Subsequently, we asked which preparation method they preferred for obtaining data. The ‘spread’ preparation was preferred for moult, third primary feather length and tarsus length, whilst the ‘traditional’ preparation was preferred for wing chord. Data obtained from the folded and spread preparations were very highly repeatable within each method but only moderately to highly repeatable between methods. One of the handicaps with the ‘spread’ preparation is the increase in storage space required, a factor that should be taken into account before it is employed. Nevertheless, this specimen preparation technique can greatly facilitate consultation and therefore improve the scientific value of ornithological collections.

Progress of Primary Feather Molt of Adult Mourning Doves in Missouri

1970 ◽  
Vol 34 (4) ◽  
pp. 783 ◽  
Author(s):  
Kenneth C. Sadler ◽  
Roy E. Tomlinson ◽  
Howard M. Wight
Keyword(s):  
Primary Feather ◽  
Mourning Doves ◽  
Feather Molt

scholarly journals Replication kinetics of turkey herpesvirus in lymphoid organs and feather follicle epithelium in chickens

2021 ◽  
Vol 83 (10) ◽  
pp. 1582-1589
Author(s):  
Takashi OKURA ◽  
Hiroki OTOMO ◽  
Akira TANENO ◽  
Eiji OISHI
Keyword(s):  
Lymphoid Organs ◽  
Feather Follicle ◽  
Kinetics Of

Immunohistochemical demonstration of connexins in the developing feather follicle of the chicken

2014 ◽  
Vol 116 (4) ◽  
pp. 639-645 ◽  
Author(s):  
Wilfried Meyer ◽  
Anna Oberthuer ◽  
Anaclet Ngezahayo ◽  
Ulrich Neumann ◽  
Ralf Jacob
Keyword(s):  
Immunohistochemical Demonstration ◽  
Feather Follicle

Limb development in the polydactylous talpid3 mutant of the fowl

Development ◽  
1967 ◽  
Vol 17 (2) ◽  
pp. 385-404
Author(s):  
J. R. Hinchliffe ◽  
D. A. Ede
Keyword(s):  
Limb Development ◽  
Vertebral Column ◽  
Autosomal Recessive ◽  
Body Wall ◽  
The Body ◽  
Chick Embryos ◽  
Common Pattern ◽  
Feather Follicle ◽  
Recessive Genes

The three groups of abnormal chick embryos known as talpids show a common pattern of remarkably widespread pleiotropic abnormalities, thought to represent the homozygous expression of one or other of three autosomal recessive genes, symbolized respectively as ta1, ta2, ta3. Ede & Kelly (1964 a, b) described in detail the abnormalities of the talpid3 embryos (ta3/ta3), which are essentially similar to those in Cole's talpid (ta1/ta1) (Inman, 1946), while homozygotes for talpid2 (Abbott, Taylor & Abplanalp, 1960) survive longer and, unlike the others, have relatively normal heads. All three possess at 11 days the following trunk abnormalities: (1) a shortening of the vertebral column accompanied by much fusion of adjacent vertebrae; (2) failure of cartilage replacement by bone; (3) substantial subcutaneous oedema and failure of the body wall to close ventrally round the viscera; (4) abnormal feather follicle formation; and (5) polydactyly in the shortened limbs. In the head of ta1/ta1 and ta3/ta3 embryos both the eyes and the maxillary processes are drawn together in the midline.

Primary feather lengths may not be important for inferring the flight styles of Mesozoic birds

Lethaia ◽  
2012 ◽  
Vol 46 (2) ◽  
pp. 146-153 ◽  
Author(s):  
NICHOLAS R. CHAN ◽  
GARETH J. DYKE ◽  
MICHAEL J. BENTON
Keyword(s):  
Primary Feather
Sign in / Sign up

Export Citation Format

Share Document