Zobrazeno 1 - 10
of 18
pro vyhledávání: '"R. W. Leeper"'
Publikováno v:
Poultry Science. 84:757-763
Two experiments were conducted to determine if 2 laying hen strains, Hy-Line W-36 and Hy-Line W-98, would respond similarly to being fed corn-soybean meal diets (17% CP and 3.8% Ca) deficient in nonphytate P (NPP). In experiment 1, 3 diets with varyi
Autor:
Carl M Parsons, M. W. Douglas, Sergio R. Fernandez, X. Wang, Y. Zhang, Ken W. Koelkebeck, S. Jin, R. W. Leeper
Publikováno v:
Poultry Science. 80:353-357
We used a total of 504 commercial Single Comb White Leghorn hens (69 and 65 wk of age) in each of two experiments, and hens were induced to molt by feed withdrawal only. Feed withdrawal lasted for 12 and 11 d, and hens lost 26 and 25%, body weight in
Publikováno v:
Poultry Science. 78:1132-1137
Commercial White Leghorn hens (65, 63, or 70 wk of age in Experiments 1, 2, and 3, respectively) were induced molted by feed withdrawal until approximately 28% body weight was lost. All hens were then weighed, and seven replicate groups of 12 hens ea
Publikováno v:
Poultry Science. 72:2229-2235
Two experiments evaluated the effects of short periods of feed withdrawal early in production on subsequent performance of laying hens. Laying hens of the H&N® strain (22 or 20 wk of age) were full fed (control) or deprived of feed for 4 or 7 days w
Publikováno v:
Journal of Applied Poultry Research. 2:214-220
A 20-wk experiment was conducted to evaluate the effects of dietary protein level and addition of fat to a 20% protein diet on performance of young laying hens. The six dietary treatments consisted of corn-soybean meal diets containing 20% CP plus 0,
Autor:
Glenn A. Bennett, J. L. Richard, Ken W. Koelkebeck, R. W. Leeper, Mary Ann Dombrink-Kurtzman, R. M. Bunte, Tariq Javed, William B. Buck, L. M. Cote
Publikováno v:
Mycopathologia. 123:185-193
One hundred eight fertile eggs (Columbia x New Hampshire) were assigned to 10 groups of 10 eggs each (2 control groups had 14 eggs each). Five groups of eggs were inoculated on day 1 of incubation, while the other 5 groups were inoculated on day 10.
Publikováno v:
Poultry Science. 72:1528-1536
Commercial White Leghorn hens (69, 61, or 67 wk of age in Experiments 1, 2, and 3, respectively) were induced to molt by feed withdrawal until approximately 28% body weight loss occurred. All hens were then weighed, and seven replicate groups of 12 h
Publikováno v:
Poultry science. 71(3)
Two experiments were conducted to examine the effects of varying length of feed withdrawal on postmolt laying hen performance. Commercial laying hens (65 wk of age) were fed continuously or fasted for 4 or 10 days in Experiment 1 and fed continuously
Publikováno v:
Poultry science. 70(10)
Three experiments were conducted to evaluate the effects of feeding molt diets varying in protein content and supplemental Met on postmolt layer performance. Laying hens (70, 65, or 96 wk of age) were induced to molt by fasting (feed only) until 26 t
Publikováno v:
Poultry science. 70(4)
Three experiments were conducted to evaluate the effects of sodium aluminosilicate (SAS) on performance of chicks and laying hens fed diets varying in nonphytate P (NPP), phytate, and fiber content. In two chick growth experiments a corn and soybean