Results: 10

Clinico-pathological assessment of virulent Newcastle Disease Virus in ducks

Braz. j. biol; 84 (), 2024
Abstract Newcastle disease (ND) is an infectious, highly contagious and lethal disease of avian species. It is considered that ducks are natural reservoir or carrier for Newcastle disease virus (NDV) and are resistant against different strains of NDV. Current study was designed to evaluate the pathogenes...

Impact of H5N8 duck and chicken viral isolates on the immunological profile of vaccinated specific pathogen free chickens

Nowadays, there is a global concern about outbreaks caused by the highly pathogenic avian influenza virus H5N8 clade 2.3.4.4 which caused devastating losses in the poultry industry sector. This clade was subdivided into two waves: clade 2.3.4.4A from 2014 to 2015 and clade 2.3.4.4b from 2016 until now. I...

Lesions caused by anisakid and capillariid in Cairina moschata raised on Marajó island, state of Pará, Brazil

The Muscovy duck is a commercially important bird on the island of Marajó usually raised in a peculiar system that includes supplying fish viscera to the birds under semi-extensive farming conditions. This enables a risk of contamination and losses in the production of these birds, resulting from injuri...

Brain teratoma in a free-ranging mallard (Anas platyrhynchos) - case report

Teratoma is a rare neoplasia with differentiation in two or three germ cell lines. Intracranial teratoma in birds has rarely been reported, especially affecting the brain. This is the first report of a brain teratoma in a mallard with neurological clinical signs. The neoplasm was characterized as a matur...

First report of Anisakis sp. (Nematoda: Anisakidae) parasitizing Muscovy duck in Marajó Island, state of Pará, Brazil

Abstract Among the avian used for human consumption, the Muscovy duck is well adapted to various climatic conditions and its breeding is widespread due to its easy handling, and its meat is widely consumed and appreciated, especially in the cuisine of northern Brazil. The present study aimed to report an...

Effects of chromium picolinate supplementation on growth performance, small intestine morphology and antioxidant status in ducks under heat stress conditions

Int. j. morphol; 36 (1), 2018
SUMMARY: The experiment was conducted to evaluate the effects of dietary supplemental chromium (Cr) on growth performance, meat quality, intestinal morphology, mucosa Hsp70 mRNA expression and antioxidant status of ducks reared under heat stress conditions. All ducks were randomly divided into three trea...

Cloning, characterization and expression of Peking duck fatty acid synthase during adipocyte differentiation

Electron. j. biotechnol; 17 (6), 2014
Background Fatty acid synthase (FAS) is a key enzyme of de novo lipogenesis (DNL), which has been cloned from several species: Gallus gallus, Mus musculus, Homo sapiens, but not from Anas platyrhynchos. The current study was conducted to obtain the full-length coding sequence of Peking duck FAS and inves...

Construction of a eukaryotic expression vector for pEGFP-FST and its biological activity in duck myoblasts

Electron. j. biotechnol; 17 (5), 2014
Background Follistatin (FST), a secreted glycoprotein, is intrinsically linked to muscle hypertrophy. To explore the function of duck FST in myoblast proliferation and differentiation, the pEGFP-FST eukaryotic expression vector was constructed and identified. The biological activities of this vector were...

Comparative Quantitative and Qualitative Attributes of the Surface Respiratory Macrophages in the Domestic Duck and the Rabbit

Int. j. morphol; 29 (2), 2011
In mammals, surface respiratory macrophages (SM) are known to play a foremost role in protecting the respiratory system by providing first line of defense through engulfing pathogens and particulate matter respired with air. It has been reported that the pulmonary cellular defense system of domestic bird...

Morphological and histochemical aspects of the luminal oviductal epithelium of the laying and non-laying muscovy duck (Cairina moschata, linneaus, 1758)

Rev. chil. anat; 15 (2), 1997
Fueron estudiadas la morfología y la histoquímica del epitelio luminal del oviducto de la pata silvestre (Caidna moschata. Linnacus, 1785) durante los períodos de postura y no postura. Se utilizaron 6 ejemplares, 3 en postura y 3 en no-postura. Los resultados mostraron que el oviducto está desarrolla...