Growth Of Pullets Research Articles

An Experimental Study of Certain Effects of Temperature on Differential Growth of Pullets

An Experimental Study of Certain Effects of Temperature on Differential Growth of Pullets

Comparative Growth and Feed Consumption of Roasters, Capons and Pullets

A RATHER common opinion among poultrymen is that capons grow larger and make more economical gains than do cockerels. During the past two years studies have been made at the Wisconsin Agricultural Experiment Station to determine the comparative rate of growth, cost of gain, and the practicability of producing capons and heavy roasters.These studies were designed to compare the growth and the pounds of feed required to produce a pound of gain between crossbred capons and cockerels and purebred capons and cockerels. In 1935 the crossbred birds were from a mating of Barred Rock males and Rhode Island Red females; the purebred birds were Barred Rocks. In 1936 the crossbred birds were from matings of Rhode Island Red and New Hampshire males and Barred Rock females; the purebred birds were Rhode Island Reds, New Hampshires, and Barred Rocks. These chicks were hatched on May 15, 1935, and May 26, .

Five Year’s Management Tests With Chicks and Pullets

MANAGEMENT tests with the growth of chicks and pullets were begun by the Ohio Station in 1928 in our efforts to prevent or control range or fowl paralysis, which made its first appearance in the Station’s flocks the year before.Range or fowl paralysis was first thought due to intestinal worms. With this contention proving untenable, coccidiosis became suspected as the cause but as more became known about paralysis, coccidiosis failed to serve as a satisfactory alibi or as the cause for paralysis although it is still contended by some that both worms and coccidiosis may be contributing factors to make the birds more susceptible. Hence the early concepts of the cause of paralysis led to the belief that contaminated soil and premises were largely responsible for the prevalence and transmission of the disease. Naturally it was supposed confinement of chicks, growing pullets, and layers to wire sunporches or batteries .

The Influence of the Presence of Cockerels in the Flock Upon the Development of Pullets

IN all successful brooding operations, the chicks are always separated as soon as the sexes can be distinguished with certainty. This is done, according to Lippincott (1923) because “it is the only method by which normal growth and satisfactory development of the pullets can be secured.” Jull (1930) in a slightly different way, expressed the same thought thus, “the separation of the sexes at an early age is necessary for two reasons: to provide more roosting and housing room for the pullets and to prevent the cockerels from annoying the pullets.”To what extent does the presence of cockerels in a flock influence the growth and maturity of pullets? As far as the writers know this question has never been subjected to experimentation, and because of this the experiment here reported was conducted. The object of the study was to determine the influence of the presence of males upon the .