Stability of carotene in mixed feeds.

Dried grass meal and a mixed feed, containing cereals, oilseed residues, mineral salts and 10 per cent. of the dried grass meal, were stored in paper bags. Carotene was estimated weekly. The average weekly percentage loss was 3.01 +or- 0.19 from the mixed feed and 4.48 +or- 0.29 from the grass meal. In another experiment the mixture contained meatmeal and fishmeal but no by-product of the oil industry. The average weekly percentage loss was 0.87 +or- 0.14 from the mixture and 0.81 +or- 0.24 from the meal. The first experiment was made in summer, the second in winter, which may explain the great difference in rate of loss. It is concluded that destruction of carotene in dried grass meal during storage is not increased by the presence of other feedingstuffs. V. H. Booth. (Abstract retrieved from CAB Abstracts by CABI’s permission)