Show sunlight ht Is important as source of kitamine Vi tamine ij sunlight Is without an equal to furnish the necessary D to laying hens says prof J 0 dougherty of the poultry husbandry division of t the lie university of california while it la Is more valuable valuably than any other agency says saya dougherty the quartz mercury vapor lamp will give good results and where sunlight Is not available aval lable tt may be used either sunlight or the lamp excel cod liver oil iff this respect although where sunlight la 19 lacking mid and the quartz mercury vapor jamp la Is not available the cod liver oil all will be far better than nothing sunlight Is 13 cheap where it Is at all available says professor dowgherty Daughert Doa gherty and where it Is possible poultry should be exposed to the direct rays of the sun as much as possible |