Study: Selenium sources in broiler feed
An article recently published in Poultry Science revealed the results of studies supervised by Prof. Steve Leeson (Guelph University) with B-TRAXIM®Se.
Two experiments were carried out with broiler breeders and laying hens to study the effects of Se sources, in interaction with dietary level of Se or dietary fats on performance, Se incorporation into tissues (blood, liver, breast muscle, and egg) and eggs, hatchability, and glutathione peroxidase (GPX) activities in tissues and blood. Three Se sources were compared: sodium selenite, a good quality selenium-yeast, and B-TRAXIM®Se from Pancosma.
There was an indication of lower GPX activity in birds fed organic Se, and this is interpreted at this time as being indicative of improved oxidative stability. In broiler breeders, liver GPX was greater (P < 0.01) in hens fed selenite or Se yeast, whereas plasma GPX was greater (P < 0.01) in hens fed selenite compared with B-TRAXIM®Se or Se yeast. Even if selenium content in breast muscle was greater in hens fed Se yeast compared with hens fed other sources of Se (P < 0.01), only B-TRAXIM®Se decreased (P < 0.05) the malondialdehyde content vs sodium selenite.
Eggs from breeder hens fed organic Se sources had greater (P < 0.01) Se content than those of inorganic source. Egg albumen from breeder fed Se yeast had the greatest Se (P < 0.01), whereas egg yolk from hens fed B-TRAXIM®Se had the greatest Se (P < 0.05). This data suggest a high biopotency of B TRAXIM®Se which result in improved Se status of poultry, and in high Se transfer from the breeder to the progeny.
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