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

Usefulness of bacteria in a natural environment, Give one example in each c...

Give one example in each case of the usefulness of bacteria in (a) a natural environment, (b) an industrial process.   (a) In a natural environment bacteria brin

What is cell cycle, What is cell cycle? Cell cycle, or mitotic cycle, i...

What is cell cycle? Cell cycle, or mitotic cycle, is the time period that starts when the cell is formed and finishes when it is divided by mitosis making two daughter cells. T

How you show that yeast acts on sugar, Normal 0 false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What are called transactions, What are called Transactions? The grouped...

What are called Transactions? The grouped SQL statements are known as Transactions (or) A transaction is a collection of actions embused with ACID properties.

Determinants of health status, Determinants of Health Status The linkage...

Determinants of Health Status The linkage between economic development and health was discussed in the previous unit. The present unit deals with an identification of the factor

Health conditions, 2. Mr Konarski, 73 years old, lives in a high-level care...

2. Mr Konarski, 73 years old, lives in a high-level care facility. He has dementia of the Alzheimer''s type, osteoarthritis in both knees and ankles, and hypertension, which is con

Describe the advantages of clinical neuropsychology, Describe the advantage...

Describe the advantages of Clinical neuropsychology Clinical neuropsychology seeks like as understanding, particularly, in the case of how damaged or diseased brain structures

Spermatogonia, Spermatogonia Spermatogonia are the youngest germ cells...

Spermatogonia Spermatogonia are the youngest germ cells from which spermatozoa proliferate. These lie next to the basement membrane and undergo series of mitotic divisions lea

Determine the three types of joints, Determine the three types of joints ...

Determine the three types of joints There are three types of joints : Fixed or immovable or fibrous : There is no space between the bones. The attached bones are very ti

Fungi, Candida albicans, and Aspergillus species are the most common of the...

Candida albicans, and Aspergillus species are the most common of the many fungal organisms identified as causing IE. Fungal endocarditis arises in specific settings. Valve replace

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