🐣 Layer Chicken Vaccination Guide (From Hatch to Point of Lay) Keeping your chickens healthy starts with the right vaccines. Here's an easy-to-follow schedule from day one to when they start laying eggs (around 18–20 weeks): ✅ Day 1 (at hatchery or farm) - Marek’s Disease – Inject under the skin - Newcastle Disease Infectious Bronchitis – Give as eye drops or spray ✅ Day 7 - Gumboro (IBD) – Mix in clean drinking water ✅ Day 14 - Gumboro (2nd dose) – Again, through drinking water - Newcastle (La