Animal_Science_10-9-08

# Animal_Science_10-9-08 - Animal Science 10-9-08 A single...

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Animal Science 10-9-08 A single layer hen consumes 185 grams of feed per day and there are 325 million layers in the US, then how many tons of feed are consumed by layers in the US in a single day? 325,000 x 185 2000lb./ton == _______________ 454g/lb. 56 lbs. in a bushel 75% of poultry diet is corn 2000lbs. = 1 ton 454g = 1 lb. Use 177 bushels per acre A single hen eats 185g. per day and there are 325 million layers in the US. Assuming that 75% of the diet is corn, how many acres/bushels of corn would be needed daily? 325,000 x 185 = 132433521 lbs. = 2,364,891 x .75 = 1,700,000 bushels ÷ 177 = 10020 acres 454g/lb. 56lb./bushel Changes in Egg Production 1945-1970 major changes Shift from small flocks to large commercial flocks Shift from breeds of laying birds to commercial strains or line Decrease in bird size with increased efficiency per bird Many switched from floor to cage operations Vertical integration of egg production 1960-1990 Increased number of eggs per bird

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## This note was uploaded on 04/08/2011 for the course AGC ANSC 102 taught by Professor Latour during the Winter '09 term at Purdue University-West Lafayette.

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Animal_Science_10-9-08 - Animal Science 10-9-08 A single...

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