Bovine leukemia, Biology

Assignment Help:

Bovine leukemia

Bovine leukemia, also known as bovine lymphosarcoma or leucosis, is a lymphoproliferative neoplastic disease of bovines. The virus belongs to genus Deltaretrovirus in the family Retroviridae. Oncogenesis depends on the integration of bovine proviral v-onc gene into cellular DNA. Transmission of Bovine leukemia virus occurs primarily by the transfer of lymphocytes between animals. The virus can be transmitted to the fetus but usually less than 40% calves born to infected dams are infected at birth.

Clinical signs: The symptoms of this disease are persistent lymphocytosis, leukemia and or lymphosarcoma in cattle. The lymphoid tumors are seen in lymph nodes, abomasums, heart, spleen, kidneys, uterus, spinal meninges, and brain.

Diagnosis: Antibodies to bovine leukemia virus antigens are demonstrated by immunodiffusion, radioimmunoassay, enzyme immunoassay, syncytium-inhibtion assay and complement-fixation test. The diagnosis is aided by the hematologic observations including lymphocytosis and the presence of immature lymphocytes. Electron microscopy, infectivity assay in cell-culture systems and sero-epidemiological observations provide a confirmatory diagnosis.

Prevention and control: Identification of the affected animals by serological testing followed by culling is the only available method of controlling this disease.


Related Discussions:- Bovine leukemia

Pulmonary artery vary from pulmonary vein, In what two ways will the compos...

In what two ways will the composition of blood coming from the pulmonary artery vary from that going to the pulmonary vein? Blood in the pulmonary artery will have less oxygen

What are the two divisions of meiosis, What are the two divisions of meiosi...

What are the two divisions of meiosis? What are the main events that happen in those divisions? Meiosis is divided into first meiotic division, or meiosis I, and second meiotic

Explain potassium, Explain Potassium Potassium (K): Potassium restri...

Explain Potassium Potassium (K): Potassium restricted diets are important for patients with  advanced renal  failure undergoing  conservative  treatment or haemodialysis. Th

How dissimilar are intracellular and extracellular digestion, How dissimila...

How dissimilar are intracellular and extracellular digestion? What is the evolutionary benefit of extracellular digestion? Intracellular digestion is that in which the breaking

Define absolute food safety and relative food safety, 'Absolute  food  safe...

'Absolute  food  safety'  is  the  assurance that damage  or  injury from use  of  a substance is impossible. Normal 0 false false false EN-US X-NON

Source of the bacteria of salmonellosis, Q. Source of the bacteria of Salmo...

Q. Source of the bacteria of Salmonellosis? The initial source of the bacteria is the intestinal tract of birds, reptiles, farm animals, humans and occasionally insects. As int

Hutchinsons system of classification, Q. Hutchinsons System of Classificati...

Q. Hutchinsons System of Classification? John Hutchinson, a renowned British Botanist proposed 24 phyletic dicta or principles and based on these dicta he published a phylogene

Hyperthyroidism (graves disease), Hyperthyroidism (Graves Disease): Gr...

Hyperthyroidism (Graves Disease): Graves diseases is  the most common cause of hyperthyroidism  in  children and is usually associated with an  enlarged thyroid gland and exop

Infectious and inflammatory conditions for lymphatic system, Q. Why in infe...

Q. Why in infectious and inflammatory conditions may clinical signs related to the lymphatic system occur? The lymph nodes or lymph glands have lymphoid tissue that produces ly

Salinity - marine ecosystems, Salinity - Marine Ecosystems Physico-...

Salinity - Marine Ecosystems Physico-chemical factors - Salinity The sea is salty and its salinity is fairly constant, averaging about 3.5 per cent usually written as

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd