ANIMAL INDUSTRY 449 



In Uganda special interest may be attached to recent work on 

 tuberculosis of cattle and small stock. In Chapter XVI, where 

 human tuberculosis is discussed, it is pointed out that evidence goes 

 to prove that this disease is not indigenous to Africa, and that its 

 effects on African natives are, therefore, often far more serious than 

 on Europeans. This was thought to be true also of bovine tuber- 

 culosis. Results from autopsies in Uganda (Uganda, Veterinary, 

 1935, D.R., pp. 6 and i8) suggest, however, that the disease may 

 be much more common than was previously supposed. The dis- 

 ease is seldom diagnosed outside the abattoirs, but in carcases 

 examined in the Kampala native market, 41 per cent in a lot of 

 464 Ankole cattle had lesions, against only i per cent in 1,334 

 zebu cattle. Sheep and goats in Ankole were also affected in a 

 smaller degree. Later on the double intradermal tuberculin test 

 proved positive in 76*6 per cent in a lot of 205 Ankole cattle, and 

 only 5'2 per cent in 121 Kigezi cattle. This and other laboratory 

 work suggest that zebu cattle are more resistant to a local bovine 

 strain of the tubercle bacillus than are those from Ankole, while 

 both breeds are equally susceptible to a type bovine culture of 

 European origin. The bovine type of bacillus has been isolated 

 from a few cases of human pulmonary tuberculosis, after a history 

 of keeping cattle in each case. Studies are also continuing in 

 Uganda on east coast fever, but the lack of an entomologist in the 

 veterinary department renders this and work on trypanosomiasis 

 difhcult. 



WEST AFRICA 



In West Africa, although most of the diseases are similar, the 

 problems of control are in many ways different. In the first place 

 there are practically no introduced European breeds, and secondly, 

 as pointed out above, most of the cattle-owning tribes, such as the 

 Fulani of Northern Nigeria, have a more commercial attitude 

 towards their stock. They are therefore willing to sell surplus 

 animals for cash, and consequently there is practically no over- 

 stocking. Since the main stock markets lie to the south along the 

 Guinea Gulf, where cattle cannot be kept on account of tsetse fly, 

 the prevention of losses from disease in transit through the dan- 

 gerous belts of the country presents a special problem. Formerly 



