Vitamin E Stability in Corn and Mixed Feed

Selenium and Vitamin E Supplementation of High Moisture Corn Diets for Swine Reproduction

“…Diets were hand fed to appetite for the first 112 days of the experiment thereafter 2.7 kg/pig/day were fed. Approximately 8 months after the initiation of the experiment the source of corn was altered from ensiled high moisture corn to propionic acid treated corn from the same crop since concurrent research (Young et al, 1975) indicated similar a-tocopherol levels in the two types of corn. The diets prepared from the propionic acid treated corn were prepared as needed and were not refrigerated.…”

“…Previous research has indicated that vitamin E-selenium deficiencies in pigs can be produced when fceding a practical diet based on high moisture corn (Sharp et al, 1972a) and that thc levcl of c~-tocopherol in high moisture corn decreases during storage (Young et al, 1975).…”

The effects of moisture, propionic acid, sodium hydroxide and anaerobiasis on the stability of vitamin E in stored barley

“…First, it would appear that the conclusion of Madsen et al (1973), that vitamin E destruction was due to moisture, was purely subjective in that it is not supported by their experimental observations. Young et al (1975) differed from us in that they used maize as opposed to barley. Although this may account for some of the difference between their results and ours it is improbable that it explains all of it.…”

“…The results of these experiments in relation to the effects of moisture and propionic acid on <ztocopherol stability are contrary to currently held opinion. Madsen et al (1973) and Young et al (1975) considered that the destruction of vitamin. E in high moisture cereals was due to the high moisture content and not the organic acid treatment.…”

“…Although this may account for some of the difference between their results and ours it is improbable that it explains all of it. A more likely explanation is that Young et al (1975) did not have a proper high moisture negative control for their propionic-acid-treated whole grain. What they used as a negative control was not whole maize but ground grain ensiled in a tower silo.…”