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29-120. The closed Sh;LkiJ-J>9-rds had a low abortion raLteof 3 per cent- Consequent on the^ijitH^dtuxtion o'f new""stock the rate rose in 1943 to 9 per cent., and many caseswere recorded in Shika cows 6ent to the Lagos Dairy. ThisDairy is now stocked from Samaru, where a tested herd isbeing established. The herd is tested weekly and positivecoses slaughtered. Testing will continue for 3months after the last positive case of contagious abortionis disoovered.121. Pleuro-pneomonia. A triple vaccine is provingeffective.Injection 1 Attenuated Kenya strain. In Dewlap\2 " Nigerian " In Ta11 -3 Virulent " " In Tail.Intervals of 6 weeks between injections.Ilorln Stock Farm.'122. At Ilorin farm the inheritance of resistance,to trypanosomiasis is being studied in Gold Coast Shorthornsand N'damos. Deaths in the Shorthorn herd haveusually been traceable to low resistance in one of theparents; the Offspring of selected dams and sires areshowing a'greatly enhanced resistance. A great increasein oalf size has been effected by crossing Gold Coastwith Nigerian Shorthorns. Crossing N'dama with NigerianShorthorns and Borgawa is planned when sufficient N'damastock is available. One undesirable feature of theN'dama is the long period (about 480 days) between calves.There are indications that this interval may be reducedby alterations In management.123. A necessary preliminary to the upgrading ofthe dwarf cattle which at present roam free,ly, to the .detriment of crops and village sanitation, is theircollection into herds. The building of kraals and theprovision of herdsmen are being undertaken by theDepartment in some of the Southern Provinces (e.g. Ondo).A pure herd of Nigerian shorthorns is maintained andworked at Moor Plantation. They have been found difficultto train, and yield a very small quantity of manure.124. Early in the war the production of baoon andpork for the Nigerian market was undertaken by the VeterinaryDep i tment, who during the 4i years ending December,1944, had produced 160,000 lbs. of bacon and 125,000 lbs.of freah pork. The Agricultural Department took uplarge-scale pig-keeping in 1941, partly to supplementthe Vom production of bacon, sausages, etc., and partlywith the object of introducing improved pigs into nativehusbandry and diet. it was hoped that local pig-keeperswould eventually relieve the Department of;the need formass production, leaving the Department free to concentrateon experimental work. Privately owned piggerieshave accordingly been fostered, and their pigs marketedby the Department. Weaners for fattening have beenbought from supervised peasant farmers supplied withbreeding stock in Anchau and Bauchi.125. /