P. Waldroup

Publications365
h-index45
Citations8,001
Highly Influential Citations581
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Evaluation of Glycerine from Biodiesel Production as a Feed Ingredient for Broilers
TLDR
Data indicate that glycerine from biodiesel can be a useful energy source for use in broiler diets, and concerns remain regarding acceptable levels of residual methanol resulting from separation of the fatty acids in biodiesel production.
Influence of growth rate on the occurrence of white striping in broiler breast fillets.
TLDR
The results suggest that an increased growth rate results in increased occurrence of higher degrees of white striping in broiler breast fillets, and the various degrees ofwhite striping are associated with differences in chemical composition of breast Fillets.
Nonphytate phosphorus requirement and phosphorus excretion of broiler chicks fed diets composed of normal or high available phosphate corn with and without microbial phytase.
TLDR
Fecal P output could be reduced while maintaining optimum performance by the use of reduced dietary nonphytate P, introduction of HAPC, and phytase supplementation, and one of the greatest benefits of phyt enzyme supplementation appeared to be maintaining livability at lower dietary levels of nonphyTate P.
Effects of a buffered propionic acid in diets on the performance of broiler chickens and on microflora of the intestine and carcass.
TLDR
A buffered propionic acid (BPA) was added to broiler diets fed in floor pens with litter and had no adverse effect on growth, feed utilization, the abdominal fat of females, or the dressing percentage of males while significantly reducing the abdominalFat for males and increasing the dressing Percentage for females.
Influence of dietary lysine levels and arginine:lysine ratios on performance of broilers exposed to heat or cold stress during the period of three to six weeks of age.
TLDR
It is concluded that the levels of Lys and Arg suggested for 21 to 42 d by the NRC are adequate for birds of this age under the environmental conditions encountered.
Effect of different levels of dietary vitamin E (DL-α-tocopherol acetate) on the occurrence of various degrees of white striping on broiler breast fillets.
TLDR
Diet vitamin E level is not associated with the modern condition of white striping in broiler breast meat, and higher degrees ofwhite striping were seen associated with heavier fillets, which is in accordance with previous studies.
An evaluation of fructooligosaccharide in diets for broiler chickens and effects on salmonellae contamination of carcasses.
TLDR
The addition of FOS to nutritionally complete broiler diets at .375% had little consistent effect on growth rate, feed utilization, mortality, carcass dressing percentage, abdominal fat content, or incidence or severity of salmonellae contamination of processed broilers.
Phosphorus requirements of broiler chicks six to nine weeks of age as influenced by phytase supplementation.
TLDR
Compared to current NRC (1994) recommendations, the application of these reduced dietary phosphorus levels could markedly reduce excreta excretion of phosphorus by broilers.
Nutritional approaches to reducing phosphorus excretion by poultry.
TLDR
In order to significantly reduce fecal P while maintaining economic productivity, the nutritionist must establish and maintain an integrated program of activities, including an effective quality control program for incoming animal protein feeds, selection of P supplements of the highest biological value, use of phytase enzymes, and judicious selection of dietary P levels.
Phosphorus requirements of broiler chicks three to six weeks of age as influenced by phytase supplementation.
TLDR
The estimated level for optimum tibia ash is in close agreement with current NRC (1994) recommendations and FCR, and Fecal phosphorus levels were markedly reduced at the lower P levels.
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