An experiment was conducted involving 360 large white turkeys of mixed sex, raised in floor pens. The purpose of the experiment was to determine the effect of dietary lactose on the performance of turkeys and to determine the optimum amount of lactose inclusion in the diet. Ther…
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Two studies were conducted to investigate the effects of strain or photostimulation program on the reproductive development of female turkeys. In trial I male line and female line birds were killed for assessment of reproductive organ morphology at 3 d intervals following photos…
These studies were conducted to evaluate both ante-mortem and post-mortem conditions influencing PSE development in turkeys and to evaluate the efficacy of the neuromuscular depolarizing agent, succinylcholine (SC), in identifying abnormal animals by inducing PSE meat in birds s…
Experiments were conducted to determine whether feeding diets of different ingredient composition to poults could reduce severity of experimentally-induced stunting syndrome (SS). One-day-old poults were dosed per os with either saline or an inoculum of a homogenate prepared usi…
A turkey coronavirus (TCV) isolate associated with turkey poults with acute enteritis was identified and characterized by morphological, serological, and, molecular properties. Sephacryl S-1000 size-exclusion chromatography was found to be a useful method for purification of TCV…
Skeletal muscle myogenesis is a series of highly organized processes that are precisely regulated by the extrinsic environment of muscle cells. Fibroblast growth factor 2 (FGF2) involves in the regulation of myogenesis by stimulating cell proliferation but inhibiting differentia…
Selection for increased body weight (BW) in turkeys has been found to be associated with the increased susceptibility to erysipelas, Newcastle disease virus (NDV) and Pasteurella multocida (PM). To gain better insight into effects of growth selection on immune responses to infec…
The objectives of this project were to develop an immune assessment panel that would adequately evaluate the immune status of birds consuming mycotoxin contaminated diets, and to evaluate immune responses in chicks and turkeys, fed the Fusarium mycotoxins, fumonisin B\sb1 (FB\sb…
Hot boned turkey breast and thigh muscles were held at 0, 12 or 30°C from 0.25 to 4 hr postmortem and then after 4 hr postmortem they were held at 2°C. Muscle characteristics were evaluated at various times postmortem. Ultimate pH was not influenced by postmortem temperatures an…
A series of experiments were conducted to determine if a low phytic acid, high protein corn (NutriDense Low Phytate(TM) (NDLP), Exseed Genetics L. L. C.) could replace yellow dent corn (YD) to reduce phosphorus excretion without affecting growth or bone parameters in growing tur…
The effects of aflatoxin B1 (AFB1 ) in turkeys is well documented; however, the specifics of AFB1 metabolism in this species have not been investigated. The extreme sensitivity of turkeys to the hepatotoxic effects of AFB1 makes them an ideal candidate for chemoprevention studie…
Frequency of detection was monitored in three flocks of turkeys from May, 2000 to March 2001. The effect of time was considered for hens in flocks 1 and 2, and the effect of time, gender, and litter (fresh or used) was determined for flock 3. Poults, poult-box liners, waterers, …
The present studies were designed to investigate molecular mechanisms of prolactin (PRL) gene expression by vasoactive intestinal peptide (VIP) in the domestic turkey. A new protocol for determining transfection efficiency was developed using the β-lactamase gene. Deletion analy…
Focal ulcerative dermatitis (FUD) and especially enlarged sternal bursa (ESB), also known as breast blister, results in a downgraded carcass due to trimming. Studies were conducted to evaluate effects of various factors on the development and severity of these lesions in market …
The purpose of this study was to determine the response to lysine, threonine and arginine in diets of young male market turkeys and their interactions to 11 wks of age. The basal diet primarily composed of corn, soybean meal, meat and bone meal, and canola meal was formulated to…
The effects of a modified (cooler) thermal brooder environment and dietary nutrient densities on growth rate, feed intake, feed efficiency and livability of juvenile male turkeys (Nicholas) brooked to 8 weeks of age were investigated. The economic implications of a modified (coo…
Two experiments, each involving a 3 x 2 factorial design, were conducted with Large White turkeys to determine the influence of a Bacillus subtilis culture on body weight gain (BWG), feed efficiency (FE), livability and intestinal microflora. Four experiments with broiler chicke…