Show Vi tamine kitamine D important for egg hatchability birds that have access to direct sun light will generally produce e esis as of greater hatchability than birds that are deprived of this uld aid sunlight fur bishes the i lt amine tamine D which Is important experiment stations have not proved probed that cod ller lher oil Is as effective as dh direct act sunlight in pro iding this vit arnine hut but ns as sunshine Is not nit avail able at till all times the majority of hatcheries require that the hat rhory locks flocks receive cod liver oil in their ration the of grem rezi re zi or clo clover er hay Is also un an aid in supply ing the needed the use of glass substitutes on the hen houses will also aid at lit in ahing the hens outdoor condit conditions lons eun enen though the weather m anay ay not nol be stil table |