MP Board · Class 9 · Science · Improvement in Food ResourcesSolve the numerical problem in Part A and answer the theoretical question in Part B regarding Poultry Farming and Management: Part A (Numerical):\nA poultry farmer maintains a flock of $500$ layer birds for egg production. On average, each layer bird consumes $110\text{ grams}$ of concentrate feed per day and lays $240\text{ eggs}$ per year. The feed costs ₹$30$ per kg and eggs are sold at ₹$6$ per egg. Calculate the total annual egg production (in numbers) from the flock of $500$ layers. Calculate the total mass of poultry feed (in kg) consumed by the entire flock in a non-leap year ($365\text{ days}$). Calculate the total annual revenue generated from egg sales, the total annual feed expenditure, and the net profit earned over feed expenditure. Part B (Theoretical):\nWrite a detailed note on Poultry Farming addressing the following points: Distinguish clearly between Broilers and Layers based on their purpose, growth period, housing, and dietary requirements. Explain key management practices required for poultry housing, sanitation, and disease control to maintain flock health.

Part A (Numerical Solution)

1. Total Annual Egg Production:

• Number of layers ($N$) = $500$
• Eggs laid per layer per year ($E$) = $240$ $$\text{Total Annual Egg Production} = N \times E = 500 \times 240 = 1,20,000\text{ eggs}$$

2. Total Mass of Feed Consumed in a Year (365 days):

• Daily feed consumption per layer = $110\text{ g} = 0.11\text{ kg}$
• Daily feed consumption for 500 layers = $500 \times 0.11\text{ kg} = 55\text{ kg/day}$ $$\text{Total Feed Consumed (Annual)} = 55\text{ kg/day} \times 365\text{ days} = 20,075\text{ kg}$$

3. Revenue, Feed Expenditure, and Net Profit:

• Selling price per egg = ₹$6$ $$\text{Total Revenue} = 1,20,000 \times 6 = \text{₹ } 7,20,000$$
• Cost of feed per kg = ₹$30$ $$\text{Total Annual Feed Cost} = 20,075 \times 30 = \text{₹ } 6,02,250$$ $$\text{Net Profit over Feed Expenditure} = \text{Total Revenue} - \text{Total Feed Cost}$$ $$\text{Net Profit} = 7,20,000 - 6,02,250 = \text{₹ } 1,17,750$$

Part B (Theoretical Solution)

1. Differences Between Broilers and Layers

• Primary Purpose: Broilers are raised specifically for meat production, whereas Layers are raised for egg production.
• Growth Period & Life Cycle: Broilers grow rapidly and are harvested at 6 to 8 weeks of age when they attain optimum body weight. Layers start laying eggs at around 20 weeks of age and are maintained for a longer production period of about 72 weeks.
• Dietary Requirements: Broiler food is rich in protein and adequate fat with high vitamin content to foster quick growth and maximum meat yield. Layer food requires balanced proteins along with high levels of Vitamin A, Vitamin K, and minerals like Calcium and Phosphorus necessary for proper eggshell formation.
• Housing Conditions: Broilers require housing optimized for fast growth and low exertion. Layers require spacious housing equipped with laying nests and controlled lighting cycles to stimulate egg production.

2. Poultry Housing, Sanitation, and Disease Management

• Housing & Environmental Control: Poultry shelters must be well-ventilated, dry, and maintained at an optimum temperature. Overcrowding should be avoided to lower stress and disease transmission.
• Sanitation & Hygiene: Regular cleaning of poultry sheds, removal of droppings, and systematic spraying of disinfectants are essential to prevent microbial buildup.
• Disease Control & Vaccination: Poultry birds suffer from viral (e.g., Ranikhet/Newcastle disease, Fowl pox), bacterial (e.g., Salmonellosis), fungal, and parasitic infections. Timely vaccination of chicks against infectious viral and bacterial pathogens is mandatory to ensure low mortality rates, health preservation, and sustainable farm yield.