Blue back is a permanent dark discoloration of the skin on the back and some- times the side and the breast of the turkeys with dark plumage but not turkeys with white plumage. It is caused by recessive factor.
Pendulous crop is otherwise known as baggy or sour crop. Weakening of the corp. and supporting tissues causes dropped crop so that feed and water accumulate in the organ and pass out slowly or not at all resulting in foul smelling semi liquid accumulation affecting the crop lining and treatment always useless.
• Selecting strains not carrying the genetic factor.
• Avoid exposure of turkeys to excessive heat without shade.
• Giving continuous and easy access to clean and cool drinking water.
• Providing ample shade.
Turkeys are subject to fright especially during night. Severe losses from injury, straying, smothering, bruising, broken limbs and death by predatory animals may result into stampedes. Avoiding disturbances at night and providing low intensity light at night may lessen it.
Breast blisters :
They are much more common in toms then in hens. They are believed to be caused by continuous irritation of the skin that covers the breastbone.
Feather picking is a mild form of cannibalism to which turkeys are addicted, especially during the growth period. It can be prevented almost completely by debeaking.
• Avoiding overcrowding in confinement.
• Feeding an adequate diet.
Control of Mycoplasma in Turkeys:
Pulse treatment with Tiamutin:
Tiamutin is given at the recommended dose for three days in a month in turkeys in order to prevent the occurrence of Mycoplasma infections
Measures to be taken during outbreak:
• Quick disposal of dead birds.
• All sanitation measures of drinking water to be adopted.
• Spraying of disinfectant in the shed.
• Separation of working personnel of infected pen from healthy pens.
• Personnel hygiene before and after entering in the infected pens.
• Use Vitamin E and C to overcome stress.
• Frequent change of infected litter.
• Quick separation and disposal of sick and ailing birds.
Measures to be taken after breakout:
• Infected flock after recovery should be disposed off quickly.
• Emptied sheds and infected equipment should be thoroughly cleaned and disinfected before reusing the same.
• Disinfected sheds can be kept empty for 2-3 weeks before housing the birds.
• Burning should destroy the infected litter.