PMID- 11195644 OWN - NLM STAT- MEDLINE DCOM- 20010308 LR - 20131121 IS - 0005-2086 (Print) IS - 0005-2086 (Linking) VI - 44 IP - 4 DP - 2000 Oct-Dec TI - Alterations in levels of various host antioxidant factors in turkey knockdown syndrome. PG - 891-5 AB - Five components (selenium, glutathione peroxidase, copper, superoxide dismutase, and vitamin E) of the antioxidant system of turkey poults were examined to determine if they play any role in the knockdown (KD) syndrome. All flocks were provided with feed formulated to contain monensin at 54-60 g/ton. Flock data were analyzed as a case-control study with three treatment groups (KD-affected and unaffected turkey poults from a KD flock and poults from an unaffected flock [control]). Affected turkey poults had lower (P < 0.001) serum vitamin E levels compared with unaffected poults from KD flocks or poults from unaffected flocks. No significant differences were observed for the other parameters evaluated but there was a trend towards lower copper and superoxide dismutase values in affected birds. It appears that serum vitamin E concentrations in turkey poults may play a significant role in susceptibility to or protection against KD syndrome. Other components of the antioxidant system may also be involved, and complex interactions among several body systems may be critical. FAU - Meldrum, J B AU - Meldrum JB AD - Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg 24061, USA. FAU - Evans, R D AU - Evans RD FAU - Robertson, J L AU - Robertson JL FAU - Watkins, K L AU - Watkins KL FAU - Novilla, M N AU - Novilla MN LA - eng PT - Journal Article PL - United States TA - Avian Dis JT - Avian diseases JID - 0370617 RN - 0 (Antioxidants) RN - 1406-18-4 (Vitamin E) RN - 789U1901C5 (Copper) RN - EC 1.11.1.9 (Glutathione Peroxidase) RN - EC 1.15.1.1 (Superoxide Dismutase) RN - H6241UJ22B (Selenium) SB - IM MH - Animals MH - Antioxidants/*metabolism MH - Copper/blood MH - Disease Susceptibility MH - Glutathione Peroxidase/blood MH - Lameness, Animal/blood MH - Poultry Diseases/*blood MH - Selenium/blood MH - Superoxide Dismutase/blood MH - Syndrome MH - Turkeys/*blood MH - Vitamin E/blood EDAT- 2001/02/24 12:00 MHDA- 2001/03/10 10:01 CRDT- 2001/02/24 12:00 PHST- 2001/02/24 12:00 [pubmed] PHST- 2001/03/10 10:01 [medline] PHST- 2001/02/24 12:00 [entrez] PST - ppublish SO - Avian Dis. 2000 Oct-Dec;44(4):891-5.