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Dive into the research topics where H. R. Bird is active.

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Featured researches published by H. R. Bird.


Experimental Biology and Medicine | 1947

Chick Growth Factor in Cow Manure. VI. Effect on Hatchability and Storage in Hens

Max Rubin; A. C. Groschke; H. R. Bird

Summary An acid precipitate of a water extract of cow manure which was highly potent as a source of the chick growth factor was shown to possess a high potency of the hatchability factor required by hens fed an all-plant-protein diet. This result is in accord with the view that the same dietary factor influences both growth and hatchability. Hens that obtained the hatchability factor from the above mentioned concentrate or from fish meal, stored sufficient quantities of the factor, so that high hatchability was maintained for at least 12 to 15 weeks even when a deficient diet was fed.


Journal of Biological Chemistry | 1948

Relation of vitamin B12 to the growth factor present in cow manure.

Robert J. Lillie; Charles A. Denton; H. R. Bird


Poultry Science | 1947

Toxicity of DDT to Laying Hens

Max Rubin; H. R. Bird; Nathan Green; R. H. Carter


Poultry Science | 1946

Effectiveness of Dietary Supplements in Increasing Hatchability of Eggs and Viability of Progeny of Hens Fed a Diet Containing a High Level of Soybean Oil Meal

H. R. Bird; Max Rubin; Donald Whitson; S. K. Haynes


Poultry Science | 1946

A Growth Promoting Factor for Chicks in the Feces of Hens

Max Rubin; H. R. Bird; Irving Rothchild


Poultry Science | 1947

Effects of DDT on Growing Turkeys

Stanley J. Marsden; H. R. Bird


Poultry Science | 1947

Gland-Free Cottonseed Meal as a Protein Supplement for Chickens

A. C. Groschke; Max Rubin; H. R. Bird


Journal of Nutrition | 1947

An inborn characteristic determining the response of chickens to a diet free of animal protein.

H. R. Bird; Max Rubin; A. C. Groschke


Poultry Science | 1946

Value of High Levels of Calcium Pantothenate and Pyridoxine Hydrochloride in Chick Diets Free of Animal Protein

H. R. Bird; Max Rubin


Poultry Science | 1946

Effect of Diet on Efficiency of Egg Production

H. R. Bird; Donald Whitson

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Max Rubin

Bureau of Animal Industry

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Donald Whitson

Bureau of Animal Industry

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A. C. Groschke

Bureau of Animal Industry

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Harry W. Titus

Bureau of Animal Industry

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J. R. Sizemore

Bureau of Animal Industry

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John C. Hammond

Bureau of Animal Industry

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Nathan Green

Bureau of Animal Industry

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