Download Diseases of Poultry. (Including Cage Birds) by P. Seneviratna PDF

By P. Seneviratna

Show description

Read or Download Diseases of Poultry. (Including Cage Birds) PDF

Similar diseases books

Spillover: Animal Infections and the Next Human Pandemic

A masterpiece of technology reporting that tracks the animal origins of rising human diseases.
The emergence of wierd new ailments is a daunting challenge that seems getting worse. during this age of quickly commute, it threatens a global pandemic. We listen information stories of Ebola, SARS, AIDS, and whatever known as Hendra killing horses and other people in Australia—but these reviews omit the massive fact that such phenomena are a part of a unmarried development. The insects that transmit those ailments percentage something: they originate in wild animals and go to people by way of a strategy referred to as spillover. David Quammen tracks this topic all over the world. He recounts adventures within the field—netting bats in China, trapping monkeys in Bangladesh, stalking gorillas within the Congo—with the world’s best sickness scientists. In Spillover Quammen takes the reader alongside in this superb quest to profit how, the place from, and why those illnesses emerge, and he asks the terrifying query: What may perhaps the subsequent monstrous one be?

Hepatitis - A Medical Dictionary, Bibliography, and Annotated Research Guide to Internet References

This can be a 3-in-1 reference e-book. It supplies an entire scientific dictionary masking 1000's of phrases and expressions when it comes to hepatitis. It additionally supplies vast lists of bibliographic citations. eventually, it offers info to clients on how you can replace their wisdom utilizing a number of net assets.

Triple Repeat Diseases of the Nervous Systems

International of volatile Mutations The booklet "Triplet Repeat illnesses of the fearful procedure" overviews the lat­ est facts on numerous problems linked to volatile mutations. This box of re­ seek is progressing super quick. The variety of polymorphic mutations and ailments as a result of those mutations is expanding virtually each month.

Virus Diseases and Crop Biosecurity

Biosecurity approximately capacity “safe lifestyles” and includes a number of measures designed to avoid ailment – inflicting brokers from getting into a area and there being unfold. nutrients provides are effortless to disrupt and the supply of biosecurity at l. a.- land borders is principally demanding if alternate is to be maintained and whilst only a few guests are subjected to thorough inspection.

Extra resources for Diseases of Poultry. (Including Cage Birds)

Example text

How­ ever, there will be a drop in egg production by 5-20 per cent which may last for a period of 10 days. During this period they are usually viraemic and the virus is shed in the eggs. Infected eggs will show a high mortahty especially during the latter stages of incubation. Some hatched chicks will show signs of tremor during the first few weeks of life. As a rule the disease in chicks 1-14 days old can be attributed to egg transmission. —The lesions are usually microscopic in nature and are caused by focal or diffuse gliosis, perivascular infiltration, neuronal degeneration, and hyperplasia of the lymphoid follicles, primarily of the myocar­ dium, the proventriculus, and the pancreas.

So far this infection has not been reported from Asia, and it has no great significance in the poultry industry. Its greatest significance lies, however, in the fact that man is susceptible to infection. RABIES This is a well known virus infection of dogs and other mammals including m a n ; the fowl also is susceptible. The incubation period varies but may be as short as 40 days. Birds usually get the infection by being bitten by a rabid dog. Once they are infected they may attack other birds and even man.

Eggs laid by the carrier hens show decreased fertility and low hatchability, and chicks hatched from infected eggs show a high mortality. Further, the egg production in infected birds is lower than in the case of non-infected ones. —The disease is caused by Salmonella pullorum isolated by Rettger in 1900. This is a non-motile Salmonella which when isolated from acute cases in MacConkey agar plates, produces small translucent colonies which are fairly characteristic. Salmonella pullorum ferments glucose and mannitol producing acid and some strains may produce small amounts of gas.

Download PDF sample

Rated 4.48 of 5 – based on 24 votes