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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 54 for “"Growing period"”.
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Using computer simulation to reduce costs at a recirculating aquaculture facility
… variables change instantaneously during the growing period. This effort uses a combination of discrete and continuous simulation to model this system. Changing the values of a certain set of variables (regressors) result in changes to another set of variables (responses). So the inter …
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The effects of the rate of gain during four periods of growth on carcass characteristics in swine
… estimate the effect of rate of gain during four periods of growth (birth to 50 pounds, 50 to 100 pounds, 100 to 150 pounds, and 150 to 200 pounds) on carcass characteristics. The results were expressed as partial regression coefficients in terms of square inches or inches per pound for deviation …
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Effects of dietary lysine restriction and number of dietary phases in the growing-finishing period on growth performance of pigs
… the effects of dietary lysine restriction in the growing period and the number of dietary phases used in the growing-finishing period on growth performance of growing-finishing pigs (32.7 ± 9.43 kg to 115.5 ± 8.18 kg BW). A randomized complete block design was used (blocking factors were gender …
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Optimizing non-flooded landscape units to support maize production in the Zambezi region, Namibia
… and 4.9 to 22.9 VWC % sandy soils during the growing period between October and April. At the same time the maize crop water requirements (CWR) and maize water use (ETo) observed for the area ranged from 1.25 to 5.79 mm/day (CWR) and 4.01 to 4.44 mm/day (ETo). Therefore water content …
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Enhancing biotic mortality of the potato leafhopper, Empoasca fabae
… constructed for E. fabae nymphs. For the 1st growing period, E. fabae nymphal mortality was 70% and 49% in 1999 and 2000, respectively. During the last growing period, total nymphal mortality was relatively low (<25%) in both years.</p>
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Effects of body weight and research conditions on the productive energy content of corn germ meal fed to growing-finishing pigs
Made available in DSpace on 2017-08-10T19:15:05Z (GMT). No. of bitstreams: 3 ESTRADARESTREPO-DISSERTATION-2017.pdf: 806941 bytes, checksum: f5ba0a8cef7f0269bb6fd3c91a3ce88f (MD5) LICENSE.txt: 4219 bytes, checksum: 8488ca00de5bf27f2256d1d9817ca645 (MD5) PROQUEST_LICENSE.txt: 4565 bytes, checksum: …
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Effects of excess nitrogen on growth, flowering and fruit set of bell pepper (Capsicum annuum L.)
… suppressed plant growth, particularly at early growing period. In general, plants exhibiting poor early growth produced lower early and total fruit yield. Excess N (336 and 448 kg N/ha) reduced the total number of fruits per plant by as much as 48 to 57% at early harvests. The percentage of …
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Use of Lignite Fly Ash as a Soil Amendment
… needle die-back at the end of the six-month growing period. Soil analyses revealed the effects of fly ash amendments to include: 1) elevated pH, 2) excessive free salts, particularly calcium, and extremely high levels of percent base saturation, 3) reduced cation-exchange capacity, 4) …
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Evolution of atmospheric baroclinic waves
… the baroclinic waves can be divided into three periods; namely, the baroclinically growing period in which the synoptic waves grow exponentially, the transition period in which the synoptic waves decay and the planetary waves grow, and the equilibration period in which the planetary waves become …
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A study of mugwort: I. growth habits and control II. effects of 2,3,6-trichlorophenylacetic acid on certain respiratory enzymes
… the amount of infestation and production in a growing season. The third study was conducted to determine fenac rates that would prevent shoot growth from mugwort rhizomes. Also, various herbicides were evaluated in field experiments for the control of mugwort. The last study involved the …
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INITIAL IMPACTS OF DIFFERENT FERTILIZERS ON IMPROVED EAST TEXAS EQUINE PASTURES
… September 2024, followed by a 60-day undisturbed growing period. Final biomass (g/2ft² converted to lbs/ac) and percent cover measurements were collected in November 2024. The data was analyzed using ANOVA in R Studio (α = 0.10). Biomass analysis revealed significant differences in vegetation type …
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Influence of Winter Housing Conditions on Growth Rates and Feed Consumption of Dairy Heifers
… calves during the first twelve months of their growing period are carefully managed as to feed, housing and care to promote normal growth. However, they are often neglected during their yearling stage to the point where growth is retarded because of environment factors. On many dairy farms in …
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Effect of Nitrogen Fertilizer Rates and Two-Spotted Spider Mite Incidence on 'Strawberry Festival' Strawberry Cultivar Performance
… had a more developed root system throughout the growing period than ‘St. Festival’, but the petiole nitrate-nitrogen concentrations in ‘St. Festival’ were higher than ‘Chandler’ at the end of the season. The results of this experiment indicate root morphological parameters do not explain the lack …
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Influence of egg size, eggshell quality, and hatch and placement times on the performance of broiler chickens
… The hatching sequence was divided into four periods with 25% of the chicks being hatched in each period. One-half of each group was weighed and returned to the hatcher and the remainder were placed in floor pens. Hatch-held chicks were removed at 21 days, l2 hrs, weighed and placed in floor …
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The Effects of Beak Trimming and Claw Reduction on Growing and Early Laying Parameters, Fearfulness, and Heterophil to Lymphocyte Ratios
… RC birds exhibited less fearfulness during the growing period than the IC birds. Throughout lay, the body weight of RC and BT birds was significantly affected. Feed consumption was not lessened for RC birds, but was for BT birds throughout lay. Egg production, egg quality, and mortality were not …
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How many people can China feed? : assessing the impact of land and water constraints
… threatening the nation's ability to feed its growing population. The limitations of these resources must be considered simultaneously to determine China's ability to produce food. In this thesis we present an optimization model to identify the maximum population that can be sustainably …
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An estimation of the economic value of irrigation water for wheat production at sable farms
… of water per hectare of wheat during the entire growing period of wheat. Each cubic meter of water used to irrigate wheat generates an income of about ZMK 1,000 for the farmer. The financial and economic values of water used for irrigation of wheat at sable farms were found to be ZMKIOOO …
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Investigating host plant selection of harlequin bug, Murgantia histrionica (Hahn), in order to improve a trap cropping system for its management
… harlequin bug for the duration of the ten week growing period. In olfactometer choice tests, male HB responded to plant volatiles of bean, collard and mustard, but preferred Brassica volatiles over those from bean. Female response to plant volatiles alone was weak and inconsistent. Both males …
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Growth and production performance of egg-type chickens reared on modified step-up protein feeding regimens
… 52 week laying phase. Results from the 20 week growing period indicated that the conventionally fed birds consumed significantly more feed than the birds reared in modified step-up treatments. Treatments 2 and 3 consumed significantly more protein than treatments 1 and 4. Treatment 4 consumed …
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EFFECTS OF NITROGEN DEPOSITION ON BOREAL BOGS: A THREE YEAR NITROGEN FERTILIZATION AND TRACER EXPERIMENT
… may have been influenced by drier and warmer growing period during 2005 to 2007. These abnormal climatic events could have masked the effects of N deposition on surface Sphagnum moss and microbial communities. This 15N tracer experiment revealed high retention rates of 15N by moss layers as …
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