Stunting syndrome in turkeys. Development of an experimental model.
Experiments were conducted to establish a stunting syndrome (SS) model to facilitate research on nutritional aspects of enteric disorders of poults. One-day-old turkeys were dosed per os with tryptose phosphate broth (TPB) (controls) or inoculum (inoculated). The inoculum was prepared by homogenizing intestines from 11-day-old commercial poults diagnosed to have SS in TPB (1:0.5 [wt:wt]). Subsequently, intestines from 8-day-old inoculated poults from the previous experiment were used. Inoculation reduced growth (P less than 0.001) and feed consumption (P less than 0.001) at 8 and 14 days of age. In Expts. 1, 2, and 3, gain of inoculated poults was 60.9%, 58.8%, and 52.6% that of controls up to 8 days of age and 77.9%, 76.6%, and 80.9% that of controls from 8 to 15 days of age, respectively. Feed conversion was impaired (P less than 0.001) up to 8 days of age. The activity of maltase and sucrase in the jejunum and of pancreatic enzymes was determined every 2 days up to 13 days of age. Inoculation decreased (P less than 0.001) maltase and sucrase starting at 3 days of age (i.e., maltase activity was 17.45 and 1.70 mumols maltose hydrolyzed/hr.mg protein in control and inoculated poults, respectively). Inoculation had no effect on pancreatic lipase, amylase, or trypsin.
Department of Animal Science, Iowa State University, Ames 50011.
C R
CR
Angel
J L
JL
Sell
D W
DW
Trampel
D000818:Animals; D004195:Disease Models, Animal; D004435:Eating; D006130:Growth Disorders / Q000201:enzymology / Q000378:metabolism / Q000662:veterinary*; D007583:Jejunum / Q000201:enzymology / Q000254:growth & development; D008286:Malabsorption Syndromes / Q000201:enzymology / Q000378:metabolism / Q000662:veterinary*; D008297:Male; D009929:Organ Size; D010179:Pancreas / Q000201:enzymology; D011201:Poultry Diseases / Q000201:enzymology / Q000378:metabolism*; D013393:Sucrase / Q000378:metabolism; D014422:Turkeys; D015430:Weight Gain; D000520:alpha-Glucosidases / Q000378:metabolism
D000520:alpha-Glucosidases; D013393:Sucrase