Zobrazeno 1 - 10
of 18
pro vyhledávání: '"J. L. Koon"'
Autor:
B.R. Moss, F. Degraves, R.S. Adams, R. C. Smith, J.R. Martin, F.A. Martz, J. L. Koon, J.C. Lin, C. A. Flood, S. Rowe, B. Brady
Publikováno v:
The Professional Animal Scientist. 14:102-107
Forty-eight mid-lactation Holstein cows were assigned to one of four treatments and kept within an open freestall barn from June 13 to September 15, 1996. Treatments were 1) sprinklers in the feed alley plus misters over the freestalls; 2) sprinklers
Publikováno v:
Applied Engineering in Agriculture. 14:305-309
Electrical, gas, and total energy requirements during cool weather were compared for broiler houses equipped with ceiling fans and houses without fans. Fans were operated at speeds which were effective in disrupting vertical air temperature stratific
Publikováno v:
Applied Engineering in Agriculture. 14:177-182
Heat stress in dairy cows causes large losses of milk production, but such declines can be lessened if the cows are cooled. Two two-year experiments were conducted during four summers to evaluate the effectiveness of various fan, sprinkler and mister
Publikováno v:
Transactions of the ASAE. 37:269-274
Pine shavings poultry litter from four growouts were analyzed for particle size distribution and chemical composition for untilled litter and litter that had been tilled three times following each growout. Little change in the particle size distribut
Publikováno v:
Transactions of the ASAE. 36:1901-1905
Results are presented from four cold weather trials involving a poultry house with double sidewall curtains and a house with single curtains. Total gas used for heating when double sidewall curtains were used was 21.2% less than for single curtains.
Autor:
null J. L. Koon, null C. A. Flood, null Jr., null R. D. Trumbull, null T. A. McCaskey, null R. N. Brewer
Publikováno v:
Transactions of the ASAE. 35:1653-1657
Pine shavings poultry litter from four growouts was analyzed for particle size distribution and chemical composition. Little change in the particle size distribution was observed after the first growout. The majority of the nutrient mass was associat
Publikováno v:
Transactions of the ASAE. 35:703-709
Growth data from weekly weighing of 50 bird samples of broilers grown on litter in commercial-style broiler houses in 22 trials over a five-year period are presented. Broilers were found to be 23% heavier at 21 days of age and 10% heavier at 49 days
Publikováno v:
Applied Engineering in Agriculture. 10:285-286
Gas usage for heating of conventional broiler houses was measured weekly for 44 trials over a period of four years. The percent of total gas used during the first three weeks of the seven-week growout period ranged from a low of 53% for birds started
Publikováno v:
Poultry Science. 60:1381-1385
An analysis was made of selected solar heating systems for brooding broiler chickens. A computer simulation was used to evaluate brooding energy requirements and the portion of these requirements that could be supplied by solar energy on a quarterly
Publikováno v:
Transactions of the ASAE. 30:1786-1790
MICROCOMPUTER control systems allow real-time decision making to be incorporated into livestock production facilities. Air moisture content is a necessary input for computer based ventilation control. Suitable sensors for air moisture measurement are