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Sagot :
Answer:
Explanation:
Alright, let's calculate the grazing capacity for this situation.
Given information:
Average air-dry weight of forage: 75 grams
Pasture land: 20 acres
Grazing period: June 1 – September 30 (4 months)
Step 1: Convert the average air-dry weight of forage from grams to pounds.
1 gram = 0.035 ounces
75 grams = 75 × 0.035 = 2.625 ounces
2.625 ounces = 2.625 ÷ 16 = 0.164 pounds
Step 2: Calculate the total available forage in the pasture.
Total available forage = Average air-dry weight of forage × Pasture land
Total available forage = 0.164 pounds/ft^2 × 43,560 ft^2/acre × 20 acres
Total available forage = 143,040 pounds
Step 3: Calculate the daily dry matter intake (DMI) for a 1,000 lb horse.
Daily DMI = 2.5% of the horse's body weight
Daily DMI = 0.025 × 1,000 lb = 25 pounds
Step 4: Calculate the grazing capacity in number of 1,000 lb horses.
Grazing capacity = Total available forage / (Daily DMI × Number of grazing days)
Grazing capacity = 143,040 pounds / (25 pounds/day × 122 days)
Grazing capacity = 46.8 or approximately 47 horses
Therefore, the 20-acre pasture can support approximately 47 horses that weigh 1,000 lb each for the entire grazing period of June 1 to September 30.
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