Izvorni znanstveni članak
MONITORING THE VITAMINS A AND E CONTENT IN COMPOUND FEEDS AND PREMIXTURES
Jolanta Rubaj
; National Research Institute of Animal Production, Lublin, Poland
Grażyna Bielecka
; National Research Institute of Animal Production, Lublin, Poland
Sławomir Walczyński
; National Research Institute of Animal Production, Lublin, Poland
Waldemar Korol
; National Research Institute of Animal Production, Lublin, Poland
Sažetak
Vitamins A and E contents in compound feeds, supplementary feedstuffs and premixtures sampled in the years 2004-2006 were analyzed (288 samples). The obtained results were compared with producer declarations and requirements presented in dietary regulations and recommendations. On the average, the vitamin A contents in compound feeds for broiler chickens, laying hens, turkeys, piglets, fattening pigs and sows were close to the recommended values. In two of the analyzed compound feeds the maximum limit of 13,500 IU/kg of vitamin A was slightly exceeded, though it remained within the expanded uncertainty of analytical method. The levels of vitamin E in supplementary feedstuffs and premixtures confirm the fact that manufacturers practice supplementing feedstuffs with this vitamin whose addition may be sometimes higher than the dietary recommendations (improving dietetic value and storage possibility of meat, anti-stress activity). The studies revealed a total of 3.1% of cases in the years 2004-2006 (3.8% of cases in the years 2004-2008) when the vitamins A and E content was not consistent with the manufacturer’s declaration. Regarding the vitamins A and E content, the quality of domestic feed products should be considered as good.
Ključne riječi
vitamins A and E; compound feed; supplementary feedstuff; premixture
Hrčak ID:
52185
URI
Datum izdavanja:
15.1.2010.
Posjeta: 664 *