. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN No. 561 4 1 Contribution from the Bureau of Animal Industry A. D. MELVIN, Chief. ji^s-'^mru Washington, D. C. August 18, 1917 FEED COST OF EGG PRODUCTION. RESULTS OF THREE YEARS' EXPERIMENTS AT THE GOVERN- MENT POULTRY FARM. By Harry M. Lamon and Alfred R. Lee, Of the Animal Husbandry Division. CONTENTS. Objects of the work 1 Description of stock and conditions 2 Methods of feeding 3 Hens balancing their own rations 6 Feeding value of poultry feeds 11 Free range compared with large yards 16 Consumption of grit
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN No. 561 4 1 Contribution from the Bureau of Animal Industry A. D. MELVIN, Chief. ji^s-'^mru Washington, D. C. August 18, 1917 FEED COST OF EGG PRODUCTION. RESULTS OF THREE YEARS' EXPERIMENTS AT THE GOVERN- MENT POULTRY FARM. By Harry M. Lamon and Alfred R. Lee, Of the Animal Husbandry Division. CONTENTS. Objects of the work 1 Description of stock and conditions 2 Methods of feeding 3 Hens balancing their own rations 6 Feeding value of poultry feeds 11 Free range compared with large yards 16 Consumption of grit and oyster shell 18 Leghorns compared with general-purpose fowls 19 Egg yield as affected by time of maturity and age of fowls 20 Weight of eggs 21 Distribution of egg production 24 Feed cost of eggs 27 Feed used in producing eggs 30 Value of the eggs from each pen 32 Broodiness in fowls 34 Effect of the molt on egg yield 35 Variation in weight of the hens 36 Balanced rations 37 Summary 40 OBJECTS OF THE WORK. Complete data on the feed cost of egg production for fowls kept on free range or on conditions somewhat similar to those existing on general farms are very limited. The main object of the experiments reported in this bulletin was to compare the results obtained through the use of simple rations and methods and to record the feed cost of egg production under these conditions. Only the feed costs are con- sidered, because most of the pens were on free range, scattered over a wide area to keep the fowls from mixing, which, with the keeping of records, weighing the eggs and grain, etc., involved much work which would be unnecessary under commercial conditions. Careful observations were made of the conditions which affect egg production, such as molting and broodiness, and detailed records were kept of the feed used and of the weight of the eggs. These experiments were started in the fall of 1912 with six pens of 30 pullets each. New pens 93905°—Bull. 561—17 1. Please no
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