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Showing 1 to 20 of 78 for “"Nutrient Requirements"”.
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Modeling nutrient requirements and measuring nutrient outputs of feedlot cattle
… have resulted in heavier carcass weights. Animal nutrient requirements are dynamic and the ability to accurately predict the requirements of modern, heavy cattle based on historic data has not been explored. A dataset derived from 19 studies containing 289 means for treatments testing ractopamine …
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Enhanced Biological Phosphorus Removal from Dairy Manure to Meet Nitrogen:Phosphorus Crop Nutrient Requirements
… This has led to greater amounts of excess manure nutrients on farms, increasing the potential for nutrient pollution of water bodies from runoff. The purpose of this study was to determine if enhanced biological phosphorus removal (EBPR) is a viable alternative for managing excess manure nutrients …
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Nitrogen balance and nutrient requirements of young Nellore bulls fed with static or oscillating crude protein levels, and feeding behavior, water intake and requirements of bulls with different residual feed intakes
… digestibility, performance, N balance, and requirements of young Nellore bulls, and 2) to determine feeding behavior, water intake, and requirements of high and low residual feed intake (RFI) Nellore bulls. 42 young bulls (initial BW of 260 ± 8.1 kg; age of 7 ± 1.0 mo) were fed ad libitum …
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Reduction of minerals in feedlot diets of Nellore cattle: impacts on intake, performance, and nutrient requirements; and prediction of chemical rib section composition by dual energy x-ray absorptiometry in Zebu cattle
… lower levels of these minerals. Dry matter and nutrient fecal excretion were similar (P ≥ 0.23) among factors. Performance and carcass characteristics were similar (P ≥ 0.09) among diets. The content of ash in rib bones was not affected (P ≥ 0.06) by diets. Phosphorus and phosphatase alkaline …
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Nutrition and aging: development and evaluation of a learning module
… The module contained nine units: Energy and Nutrient Requirements of Everyone, Special Nutrient Requirements in Aging, Physical Characteristics Affecting Nutrition, Social Characteristics Affecting Nutrition, Evaluation of Nutritional Status, Special Diets in Aging, Nutrition Education for …
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Coccidiosis and Anticoccidials - Their Relationship to Nutriture of the Chicken
… a model system for estimating the chick's nutrient requirements during coccidiosis, (2) estimating the chick's sulfur amino acid (SAA) requirements during Eimeria acervulina infection, (3) evaluating the interaction between E. acervulina and certain amino acids, and (4) evaluating the …
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Identifying the requirements of an agricultural robot for sensing and adjusting soil nutrient and pH levels
The nutrient requirements of soils using in agriculture for crop production were examined to determine the needs of a robotic system used to detect and regulate the nutrition levels of the soil. Nitrogen, phosphorus, and potassium levels, along with pH, were chosen as the most important factors for …
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Nutritional, environmental and morphological studies on Trypanosoma ranarum
… ranarum has been accomplished in complex nutrient solutions, but growth in chemically defined media has never been attempted. The purpose of the study was to cultivate R. ranarum in “purified” bacterial media ingredients and to determine the basic nutrient requirements of the organism. …
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Effect of Feed Additives and Toxic Elements on Swine Growth Performance, Nutrient Digestibility, Immune Function and Reproductive Performance
… complete blood cell counts (Exp 1, 2&3), nutrient digestibility (Exp 1), plasma gossypol (Exp 2&3) and semen quality (Exp 3), weaned pigs (Exp 1), growing gilts (Exp 2) and growing boars (Exp 3) were randomly allotted to dietary treatments. Treatments for Exp 1 during phase 1&2 were: (1) …
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Nutrient Restriction Effects on Ovulatory Follicle and Corpus Luteum Development and Progesterone Production of Bos taurus Cows
… The objective of this study was to determine if nutrient restriction impacts ovulatory follicle size and corpus luteum (CL) development and function of Bos taurus cows enrolled in estrous synchronization. A total of 26 Angus cows were housed in a facility equipped with a Calan gate system for …
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A computer decision aid for reclaiming eastern abandoned surface mines
… required to enhance site quality), FERT(nutrient requirements for a site), and WINBRK(a windbreak effectiveness subprogram). Evaluation of the model was accomplished by using simulation and sensitivity analyses. The operation of the HIWALL and ERODES subprogram, and the sensitivity …
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Amino acid requirements and low crude protein, amino acid supplemented diets for swine and poultry
The purpose of this research was to determine requirements for amino acids that limit the use of crystalline amino acids, to determine the effects of reducing crude protein, and to evaluate the problems associated with low crude protein diets for swine and poultry. Four experiments were conducted …
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Metabolic Engineering of a Cyanobacterium to Convert CO2, Water, and Light into a Cyclic Hydrocarbon
… higher photosynthetic efficiencies, and simpler nutrient requirements. Engineered cyanobacteria with re-wired metabolic pathways have recently been designed through genetic engineering, and they possess the unique ability to synthesize new chemicals and biofuels, which are secreted from their …
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The Effects of Whole Genome Duplication on Functional Traits and Interactions With Arbuscular Mycorrhizal Fungi
… tests the hypothesis that neopolyploids are more nutrient limited by comparing growth and leaf functional trait responses of diploids, neotetraploids, and established tetraploids of Heuchera cylindrica to different levels of nutrient supply. The results support the hypothesis that neopolyploidy …
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The Effects Of Whole Genome Duplication On Functional Traits And Interactions With Arbuscular Mycorrhizal Fungi
… tests the hypothesis that neopolyploids are more nutrient limited by comparing growth and leaf functional trait responses of diploids, neotetraploids, and established tetraploids of Heuchera cylindrica to different levels of nutrient supply. The results support the hypothesis that neopolyploidy …
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Aquatic microenvironments in bacterial ecology and diversity
… these diverse bacteria with the same essential nutrient requirements co-exist in the same environment? This study examines the role of aquatic microenvironments in generating bacterial diversity: closely related organisms may co-exist in the same environment without competing for resources by a …
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Sweet sorghum fermentables as influenced by cultivar and planting and harvest dates
… grows relatively rapidly, has moderate water and nutrient requirements, and develops high levels of fermentables. A long term supply of fermentables is needed to make ethanol production economically feasible. Short term availability of fermentables results in unfavorable returns from investments …
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Computer aids for reclaiming eastern surface mines as rangelands
… from FRSELECT were combined with animal class nutrient requirements, other costs, and revenue data to determine the optimal allocation of resources using the COPLAN (Computer Optimization PLANing) linear programming model. The COPLAN system combines a matrix generating subsystem with the …
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Digestibility and apparent mineral utilization by Arabian geldings fed alfalfa, tall fescue, and Caucasian bluestem
… P absorption. Caucasian bluestem would meet most nutrient requirements for horses at maintenance. Alfalfa supplied more crude protein, Ca, Mg, and K than was required by horses at maintenance.
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