Sunday, November 19, 2017

The most common pig diseases during pre and post weaning stages.

The most common pig diseases during pre and post weaning stages. In order for pig producers to be successful, keeping their animals healthy is key. It is essential to know about diseases that may occur in the herd and all staff working with the pigs should be able to spot the symptoms of common diseases and alert the manager or veterinarian, as appropriate. Treating pigs quickly with suitable medication is the next step as prevention is obviously better than cure. There is a need to have a herd health plan will help to minimize disease incidence. In the pre-weaning period these are the common diseases; 1. Exudative dermatitis (greasy pig). The symptoms of this disease are skin lesions, caused by an infection of the bacteria Staphylococcus hyicus. In severe cases, mortality can occur, as the bacteria damage the liver and kidneys. Lesions first present as dark areas of skin, which spread and become flaky with a greasy feel. Antibiotics are used to treat the infection, along with skin protectants; autogenous vaccines have also been used with success. Improving hygiene in piglet housing is key to preventing this condition, along with teat dipping of sows pre- and post-farrowing. It is also important to reduce the potential for skin abrasions, as this is how the infection enters the body. Abrasions are caused by rough floors, jagged teeth, sharp equipment or even mange mites bites. 2. Coccidiosis. This disease is very common in suckling piglets and is caused by three types of the intracellular parasite coccidia. It causes diarrhea, which can be bloody, often between 10 and 21 days of age and up to 15 weeks of age. Acute cases are treated with fluid therapy and coccidiostats. Secondary infections can result from damage to the intestinal wall. Depending on the level of occurrence on the farm, preventative treatment of sows with coccidiostats may be appropriate. Hygiene should be improved to end the cycle of infection; sow feces are a major source, and flies can spread infection. Providing a warm, dry, clean creep area will help to reduce the parasite load and the likelihood of coccidial infection. In the post-weaning period these are common: 3. Respiratory diseases. Coughing, sneezing, abdominal breathing, reduced growth rates and potentially mortality are all signs of respiratory disease. Depending on the cause, antibiotics may be given in feed, water or as an injectable. Poor ventilation or environmental conditions can exacerbate respiratory conditions. For example, high levels of ammonia can damage the respiratory tract, making pigs more susceptible to infection. Infective agents include Streptococcus suis and Pasteurella. Vaccines are available for some forms of pneumonia, although the strain affecting a farm should be identified to ensure a successful outcome. Pleuropneumonia, caused by Actinobacillus pleuropneumoniae, can result in significant mortality, and those that do recover have impaired growth rates and lung damage. Overcrowded and dusty housing are predisposing factors for respiratory disease, along with the presence of PRRS virus. 4. Swine dysentery. Animals with this disease suffer from diarrhea, with or without the presence of blood. It is caused by the bacteria Brachyspira hyodsenteriae. Growth rates of post-weaning pigs are reduced, and, in some cases, sudden death can occur. Antibiotics are used to treat the disease, either in feed, water or as an injectable. Reducing stocking density can be an effective way of reducing infection pressure and stress in the herd. As well as improving hygiene levels, rodent control is a high priority; rodents are a vector for this disease. The strategy for buying and introducing replacement stock should be reviewed, as this a major route of disease introduction. The most common pig diseases during pre and post weaning stages.

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