The Stability of Vitamin A in Mixed Feeds and Premixes

The Effect of Dietary Vitamin A, Ambient Temperature and Rearing Location on Growth, Feed Conversion and Vitamin Liver Storage of White Leghorn Pullets

“…units per pound (Table 5). These data agree with the work of Reid et al (1955) in which it was reported that the amount of vitamin A stored in the liver of chicks was an indication of the amount of the vitamin in the feed. Shellenberger et al (1960) found only minor amounts of vitamin A in the liver with the feeding of 400 U.S.P.…”

The Comparative Utilization of Carotene and Pre-Formed Vitamin A in Broiler Type Chicks

“…The vitamin A deficient basal diet used for these studies was that of Reid et al (1955). The ingredient composition for this retion is presented in Table 1.…”

The Vitamin a Requirement of the Young Pig

“…This is particularly the case at the present day with the more frequent inclusion of trace min erals in complete mixed feeds or premixes. Such minerals will readily catalyze oxidative reactions, although low storage temperatures partially protect readily oxidizable constituents(199).Not only have oxidized, fats been shown to cause de terioration of other nutrients, but they themselves have a lower nutritional value, and if fed at high levels are able to cause the death of rats(113). DPPD in chick rations, which contained fish oils as a source of vitamin A.…”