MP Board · Class 9 · Science · Improvement in Food ResourcesSolve the following quantitative problem and answer the theoretical question: Part A (Numerical): A poultry farmer maintains a flock of $800$ broiler chickens. If each broiler consumes an average of $120\text{ g}$ of feed daily, calculate the total amount of feed required per day for the entire flock in kilograms ($\text{kg}$). If the feed contains $22\%$ crude protein by weight, calculate the total daily protein intake of the entire flock in kilograms ($\text{kg}$). Calculate the total cost of feed per day if $1\text{ kg}$ of broiler feed costs ₹$45$. Part B (Theoretical): Differentiate between Broilers and Layers on the basis of: (i) Primary purpose of rearing, (ii) Dietary requirements, and (iii) Housing & environmental requirements.

Part A: Numerical Solution

Given:

• Total number of broilers ($N$) = $800$
• Daily feed consumption per broiler = $120\text{ g} = 0.12\text{ kg}$
• Protein percentage in feed = $22%$
• Cost of feed per $\text{kg}$ = ₹$45$

1. Total feed required per day: $$\text{Total Feed} = N \times \text{Feed per bird}$$ $$\text{Total Feed} = 800 \times 0.12\text{ kg} = 96\text{ kg}$$

2. Total daily protein intake: $$\text{Protein Intake} = \text{Total Feed} \times \left(\frac{\text{Protein Percentage}}{100}\right)$$ $$\text{Protein Intake} = 96 \times \left(\frac{22}{100}\right) = 21.12\text{ kg}$$

3. Total daily feed cost: $$\text{Total Cost} = \text{Total Feed} \times \text{Cost per kg}$$ $$\text{Total Cost} = 96 \times 45 = \text{₹ } 4,320$$

Part B: Theoretical Answer

Difference Between Broilers and Layers:

1. Primary Purpose of Rearing:

   • Broilers: Raised specifically for producing poultry meat. They are grown rapidly for $6\text{ to }8\text{ weeks}$ before slaughter.
   • Layers: Raised primarily for egg production. They start laying eggs at around 20 weeks of age.

2. Dietary Requirements:

   • Broilers: Their diet is rich in proteins, fats, and high levels of Vitamin A and Vitamin K to support rapid muscular body growth.
   • Layers: Their diet requires moderate protein but must contain high levels of Calcium and Phosphorus for proper eggshell formation.

3. Housing & Environmental Requirements:

   • Broilers: Require controlled temperature, proper ventilation, and strict hygienic conditions to ensure fast body growth and low mortality.
   • Layers: Require adequate cage/floor space, optimum light duration (which stimulates egg laying), and proper temperature control for continuous production.