Avian Production Management

LIVABILITY

• Per cent livability is worked out separately for each of the three stages of layer management viz. in   Brooder (0-8 weeks), Grower (9-20 weeks) and Layer (21-72 weeks) stages
• Permissible levels of mortality during these stages are 4%, 2-3% and 6-8% respectively
• Accordingly, livability levels of 96%, 96-97% and 92-94% are prescribed as optimal for these stages independently of each other
• Strain, feed quality, litter management, vaccination schedule and other disease control measures, disease outbreaks, lay out and design of poultry houses, climate, biosecurity measures adopted, dead bird and manure disposal, parent breeder management and hatchery sanitation etc. all influence livability levels in layers