poultrynien of the State not cooperated so fully and so effectively in fighting 

 this infection, it would have been almost impossible for this department to suc- 

 ceed in its campaign for eradication of the disease. 



The statistical data included in this bulletin are of importance in showing 

 the progress that has been made in controlling the infection during the past 

 season. A study of these data shows that bacillary white diarrhoea, which as a 

 cause of economic loss has been one of the poultrymen's greatest scourges, has 

 been diminished in the State. 



Livability of Chicks and Hatchability of Eggs from Bacillary 

 White Diarrhoea Free Flocks. 



During the past season 79 poultry plants, representing 25,390 breeding 

 birds, have been found to be free from bacillary white diarrhoea. In order to 

 show the value of the test establishing disease-free flocks from which clean 

 stock may be obtained, questionnaires were sent to the owners of such flocks, 

 asking them for the names of those to whom they sold hatching eggs or day-old 

 chicks. The customers were then consulted regarding their experience with 

 eggs or chicks so obtained. It was found that the livability of chicks hatched 

 from eggs produced by bacillary white diarrhoea free flocks has been excellent. 

 The hatchability of the eggs from the same source has been somewhat higher 

 than the average. This disease may unfavorably influence the hatchability of 

 eggs, but we must remember that its absence maj' not necessarily result in better 

 than normal hatches being secured. Low hatchability of eggs is not altogether a 

 disease problem. When chicks are hatched free from Salmonella pullora infec- 

 tion, however, their chance of being raised to maturity is enhanced to a very 

 large extent. The following tables show the hatching qualities of eggs and 

 livability of chicks pi-ndueed from disease-free flocks, with records obtained as 

 above indicated. 



Table III. Hatchability of Eggs, Livability of Chicks from Disease-Free Flocks. 



