NEUROLYMPHOMATOSIS 



15 



Table 10. — The Transmission of Netjrolymphomatosis through the Egg 

 1934 and 1935 Hens and Roosters 



Hens 



Number of 



Roosters Eggs 



Laid Hatched 



Chickens 



Normal Paralyzed 



80 



25 



200 



10 



2 



5 



2 



1 

 110 

 210 



240 

 6 



2 

 200 

 155 



10 

 4 



11 

 3 



50 

 17 

 150 

 9 

 1 

 5 

 2 



1 



64 



130 



118 

 4 



1 



120 



93 



6 

 3 



5 



2 



40 

 13 

 141 

 9 

 

 4 

 2 







64 

 127 



108 

 4 



1 



120 



93 



5 



1 



5 



1 



10 

 4 

 9 

 

 1 

 1 

 



1 

 

 3 



10 

 





 

 



1 



2 







1 



17 



1276 



781 



738 



43 



*Hens producing chickens which developed neurolymphomatosis. 



Of the 17 hens on this experiment, all showed infiltration of neurolympho- 

 matous cells in the nervous tissue, but the ovaries were involved in only 8 : 

 F-286, F-450, F-1095, F-455, F-1488, F-261, M-986, and F-1064. These 8 

 hens laid 564 eggs from which were hatched 310 normal chickens and 38 which 

 developed neurolymphomatosis. The 9 hens showing no lesions of neurolym- 

 phomatosis in the ovaries laid 712 eggs from which were hatched 428 normal 

 chickens and 5 which developed neurolymphomatosis. Hens F-458 and F-24 

 were mated to roosters D-10412 and F-387 which showed lesions of neuro- 

 lymphomatosis in the testes. Hen F-1389 was mated to rooster F-280, and 

 three chickens from this mating developed neurolymphomatosis. The results 

 from this mating do not support the findings secured with the 1932 and 1933 

 flock and the rest of the birds in this flock — that neurolymphomatosis is trans- 

 mitted to chickens only after the ovaries or testes become infiltrated. 



