Page 140 - Calculating Agriculture Cover 20191124 STUDENT - A

12-10 Poultry Science CH 12]

Table 12.6 Egg Laying Breeds

Eggs Egg
Breed per year Color

Leghorn 280 White

Hybrids 260 Brown
(Leghorn x Rhode Island Red)

Rhode Island Red’s 245 Brown

Sussex 230 White

Barred Plymouth Rock 200 Brown

Ancona 200 Brown

Barnevelder 200 Speckled Brown

Hamburg 200 White

Marans 200 Dark Brown

Buff Orpington 180 Light Brown

Araucana 175 greenish-blue color to a bright light blue
AKA: Easter Egg Chicken

Minorca 120 White

In the Poultry industry one recurring calculation is the percent egg Production. This expression
means the number of eggs produced is what percent of the number of hen-days.

Example A: An egg producer has 100 hens in a pen for 30 days and they lay 1,840 eggs. (a)
Calculate the number of hen-days and (b) what is the Percent production?
Solution:
(a) Hen-Days

Birds Days Hen-Days
100 30 100 x 30 = 3,000 hen days
EXPLINATION
Hen-Days = # of hens x # of days

Hen-Days = 100 hens x 30 days

Hen-Days = 3,000 hen-days

(b) Percent Production = (# eggs ÷ hen-days) x 100%
Percent Production = (1,840 ÷ 3,000) x 100%

= (0.613) x 100%

Percent Production = 61.3 %

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