Show 1 Find Cod Liver Oil Not Nots s Needed in Calf Ration Do calves actually live without vitamin vi vitamin vitamin vi- vi y tamin D To ro answer this question Bus Dua Bohstedt Bob Boh- E. E B. B Hart and 1 1 W W. Rupel of the Wisconsin College of Agriculture Agriculture Agriculture ture have been conducting experiments experiments expert expert- ments with growing calves to which they fed a ration markedly deficient In vitamin D. D Experimental results published two VO years ago tended to show that cod liver oil when added to a normal calf ration containing clover or alfalfa hay adds no value to the ration The results now Indicate that vitamin vita vita- min D Is needed In the normal growth of calves The ration used In this trial which Is presumably free from vitamin D consisted of yellow corn corn gluten meal linseed meal wheat calcium flour or calcium carbonate and salt with ground wood shavings for roughage In June 1029 1020 two calves were started started started start start- ed on this ration and two on the ration ration ration ra ra- ra- ra tion plus cod liver oil Those receivIng receiving receiving ing the cod liver oil grew to splendid condition and showed no Indication of ot rickets The two rec receiving the ration only after six or seven months of ot fe feeding showed marked disturbances The calcium content of ot the blood was was greatly reduced Symptoms of rickets rickets rickets rick rick- ets were apparent and aud the Investigations Investigations investigations concluded that calves n need ed vitamin vitamin vita vita- min D but It Is their opinion that the normal farm tarm ration fed young calves probably carries a sufficient amount of ot fl vitamin D. D |