Table III. — nafchahility of Erjgs, LiTability of Chicks, from Diseaite-Free Plockn. 



The table which follows presents typical results obtained with day-old chicks 

 from disease-free flocks, and shows the success of the testing work. 



(Leaving out flocks 3, 5, and S) 



87.73 



The lowest percentages of livability reported by customers of day-old chicks 

 from bacillary white diarrhoea-free poultry plants were 71.80, 71.87, and 76.40 

 per cent. These low livability percentages can readily be explained. In the 

 first instance, the loss was due to poor breeding methods; in the second, the chicks 

 were taken care of by an inexperienced poultrjTnan who was not fuUy trained 

 in brooder management; and in the third, the low percentage livability was due 

 to lack of attention to the details of brooder management. 



Of the 20,665 day-old chicks sold from representative bacillary white diarrhoea- 

 free breeding flocks, aside from the three above mentioned, the livability averaged 

 nearly 90 per cent. Many individual plants have reported that nearly 100 per 

 cent of aU chicks received from baciUary white diarrhoea-free flocks were living 

 and in good health. 



Of the 139 poultry plants tested for bacillary white diarrhoea infection during 

 this season, 59 were tested for the first time. Of the remaining 80 flbcks having 

 some previous testing, 52 plants have a record of consecutive testing extending 

 back two or more years. The following table is made up from the data of these 



