50 



POULTRY DISEASES 



That an internal .secretion is mannfaetured in the testicles 

 is proved by the physical changes which take i)lace after the 

 testicles are removed. The bird loses his vim, energy and 

 mascnline appearance and ambitions and becomes sluggish, 

 lays on fat and is hated by both males and females alike. It 

 often shows some femininity in that it will take a brood of 

 chicks and mother them. The meat becomes more tender and 

 more palatable. In short, there is the same change that is 

 noted in other animals that have been castrated. 



THE URINARY SECRETION 



The kidneys are elongated and lo})ulated, measuring 2.5 

 inches long in the fowl of average size and occupying irregular 



Fk;. 18. Spermatozoa from a Smear trom Fluid of 



THE \'as Deferens of a S. C. W. Leghorn Cock. 

 a, the spermatozoa; b, the head; c, the tail. 



cavities in the lumbo-pelvic roof. There are three distin<'t 

 lobes, and each lobe is made up of lobules. The uriniferous 

 tubules terminate on the surface of the kidney, forming the 

 uretei'. Tlie ureter extends along the sin'Tace of tlie kidney, 

 receiving thi; contents from the various tiil)uh's which empty 

 into it. The ureter (Miii)ti('s inio the cloaca. The kidney tissue 

 is very soft and of a reddish-ljrown color. 



The urinary secretion is very thick and at times pasty or 

 creamy in consistency, filling the ureter lumen. The salts arc 



