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Abstract
BLOOD spots in eggs represent a serious loss to the poultry industry and the loss may become greater with more general use of electronic blood spot detection in the future.Numerous workers have investigated the effects of nutrients on the incidence of blood spots. Nalbandov and Card (1944) observed that blood spots were due to hemorrhaging within the follicular membrane and reported that vitamins A, C, D, E, K, and P had no effect on the incidence of blood spots, but that there was a definite seasonal increase from December through the following July. However, these same workers (1947) reported the feeding of cerograss reduced the incidence of blood spots materially in one of 2 years’ studied. Bearse et al. (1960) found that vitamin A was essential in reducing blood spots and that low levels of vitamin A increased blood spot incidence. The level of vitamin A recommended by the…
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