Define the following in one or two lines: i) Broiler ii) Culling iii) Downtime iv) Feed Conversion Ratio v) Fumigation vi) Hatchability vii) Incubation period viii) Ration ix) Pullet x) Spent Hen

i) Broiler: A young chicken raised for meat production, typically slaughtered at a relatively young age, usually around 6-8 weeks old.
ii) Culling: The process of removing or euthanizing animals from a flock based on specific criteria such as health issues, poor performance, or genetic defects.
iii) Downtime: A period of rest or non-production in poultry farming, often occurring between consecutive flocks to sanitize facilities and prevent disease transmission.
iv) Feed Conversion Ratio: A measure of efficiency in animal production, calculated as the amount of feed required to produce a unit of animal product (e.g., weight gain or eggs).
v) Fumigation: The process of using chemical agents to disinfect or eradicate pests, pathogens, or contaminants in poultry houses, equipment, or feed.
vi) Hatchability: The percentage of fertile eggs that hatch successfully under optimal conditions during incubation.
vii) Incubation period: The time it takes for fertilized eggs to develop and hatch, typically ranging from 21 to 28 days depending on the species.
viii) Ration: A specific combination and quantity of feed ingredients formulated to meet the nutritional requirements of animals at different stages of growth or production.
ix) Pullet: A young female chicken that has not yet reached maturity or started laying eggs.
x) Spent Hen: A mature female chicken that has completed her laying cycle and is typically removed from the flock for processing into meat products.