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Showing 1 to 20 of 21 for “"Slope-ratio"”.
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Determination of relative metabolizable energy values for fats and oils via the slope-ratio precision-fed rooster assay
… rooster assay could be combined with a slope-ratio type assay to generate useful information on the nitrogen-corrected true metabolizable energy (TMEn) content of fats and oils (lipids) for poultry. In Experiment 1, refined corn oil (RCO) was fed to both conventional (CONV) and …
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Further evaluation of a slope-ratio precision-fed rooster assay for relative bioavailable energy values for fats and oils
Five slope-ratio precision-fed rooster assays and one limit-fed chick growth assay were conducted using different fats/oils at several increasing dietary levels to determine relative bioavailable energy values. In Experiment 1, roosters were precision-fed 0, 5, or 10% of five different fats as part …
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Evaluation of several methods for detecting differences in amino acid digestibility among meat and bone meals
… ileal amino acid chick digestibility, and the slope-ratio chick growth lysine bioavailability assays. Pepsin nitrogen digestibility was determined using two different pepsin concentrations, 0.02 and 0.002%. The precision-fed cecectomized rooster assay consisted of tube-feeding the test feed …
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Determination of calcium and phosphorus digestibility and relative calcium bioavailability in limestone sources from different countries and interactions with phytase
… Africa, and Europe). Sources varied in Ca concentration (32.1 to 40.9%) and solubility (45.7 to 92%), and were evaluated for apparent ileal digestibility (AID) of Ca and phosphorus (P), and relative bioavailability of Ca. The first experiment was conducted on male 308 Ross broilers to determine if …
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Peptides and Nitrogen-Free Analogs as Substitutes for Dietary Amino Acids: Significance in the Nutriture of Chicks and Rats
… to establish quantitative efficacy values (slope-ratio procedure) for the D-isomer, the (alpha)-keto analog and the D- and L-(alpha)-hydroxy analogs of phenylalanine (Phe), leucine (Leu), isoleucine (Ile) and valine (Val). D-Phe was well utilized by both chicks (75%) and rats (68%). …
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Relationship between measures related to the cochlear active mechanism and speech reception thresholds in backgrounds with and without spectral and/or temporal fluctuations
… acoustic backgrounds was also evaluated. The operational status of the active mechanism was assessed behaviorally using three independently derived measures: (1) slope ratio of off- and on-frequency growth of masking functions, (2) equivalent rectangular bandwidth of auditory filters, and (3) …
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Exact Solutions for Orthogonal and Non-Orthogonal Magnetohydrodynamic Stagnation-Point Flow
… Prandtl number, and β, the square of the ratio of Alfven velocity to fluid velocity far from the wall. The problem has a similarity solution which reduces the governing equations to a system of coupled ordinary differential equations which can be solved numerically. For extreme values of …
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Protein, Phosphorus, and Energy Utilization in Young Chickens and Pigs as Affected by Microbial Phytase and Nutritionally -Enhanced Corn Hybrids
… meal (SBM) for young chickens and pigs using slope-ratio growth, protein accretion, and protein efficiency ratio (g weight gain/g protein intake) assays. Regardless of evaluation method, microbial phytase did not (P > 0.10) affect protein-AA utilization in CGM or SBM for young chickens and …
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Factors affecting utilization of niacin and its precursors by chicks
… of NAD(P). Multiple linear regression and slope-ratio growth efficacy studies indicated that; nicotinamide in NAD was utilized with an efficiency of 95% relative to nicotinamide used as standard (100%). When nicotinic acid was used as a standard (100%) the relative bioactivity of …
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AN INVESTIGATION INTO FOUNDATIONAL CONCEPTS RELATED TO SLOPE: AN APPLICATION OF THE ATTRIBUTE HIERARCHY METHOD
… of related facts and processes. Understanding of slope is an essential milestone in a person's mathematical development, yet assessments often measure student knowledge of slope in terms of their procedural fluency rather than their conceptual understanding. The purpose of this study was to …
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Evaluation of Factors Affecting Protein Quality as Well as Lysine and Sulfur Amino Acid Bioavailability of Commercial Enteral Products
… than casein, as determined by protein efficiency ratio (PER), regardless of heat treatment. With addition of the limiting amino acid, cystine, PER's of both Osmolite HN and Ensure were improved significantly (p $$ 0.05) on PER, even though all had darkened in color. Slope-ratio regression analysis …
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Aspects of phosphorus nutrition in swine
… relative bioavailability procedure that uses a slope ratio method was compared with the total tract digestibility method. The 2 experiments were carried out to compare the relative bioavailability (RBV) values of P in dicalcium phosphate (DCP) and distillers dried grains with solubles (DDGS) …
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Phosphorus bioavailability and digestibility in canola meals determined by different methods
… of P was estimated using the multiple-regression slope-ratio method where tibia ash was regressed on supplemental P intake. A linear increase in tibia ash was observed as the P level was increased by addition of KH2PO4, CCM, TCM, or SBM. Mean bioavailability values of P in the TCM, CCM, and SBM …
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Efficacy of guanidinoacetic acid supplementation to growing cattle and relative bioavailability of guanidinoacetic acid delivered ruminally or abomasally
… analysis of creatine, creatinine, and GAA concentrations. Plasma and urinary creatine concentrations were used as the primary response criteria to calculate ruminal bypass value of GAA by slope-ratio methodology; values were 47% and 49%, respectively. In Exp. 2, effects of GAA supplementation on N …
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Manganese utilization as affected by excess calcium and phosphorus
… procedure in the first set of experiments, and a slope-ratio multiple-regression approach was used in the second set of experiments. Feeding.88% excess P, regardless of source and irrespective of whether fed alone or in combination with excess Ca, reduced Mn utilization by 50 to 65%. Calcium …
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Methionine bioassays and methionine-choline-sulfate relationships in practical-type diets for young turkeys
… potent as DL (with 9590 fiducial limits) by the slope ratio procedure. No differences were detectable among the methionine products. The extra one degree of freedom associated with the nonlinear procedure accounted for 4.8 and 10. 7% of the residual variation in Experiments 1 and 2, respectively. …
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Fluvial systems : a re-evaluation of Horton's laws
… order following a geometric progression. The ratios of these functions are related to the bifurcation ratio by a simple algebraic equation. The length ratio can be directly related to the rate of change in the number of tributaries for different order streams.</p> <p>The average vertical …
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Lysine Bioavailability of Two Lipid Coated Lysine Products After Exposure to Silages with Different Acidity
… were used to measure Lys bioavailability by a slope-ratio analysis from 2 lipid coated Lys products and Lys-HCl after mixing in corn silage. Plasma Lys concentrations increased (Linear < 0.01) in response to abomasal infusion of Lys, and bioavailability of EB, EC, and Lys- HCl were calculated …
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Evaluation of the nutritional values of seven insect meals for inclusion in poultry diets
… were fed to chicks from 8 to 22 days of age. The slope-ratio method using multiple-regression was used to calculate the relative bioavailability of P based on tibia ash. Values for BSFL 1, BSFL 3, and partially-defatted BSFL were 54%, 51%, and 57%, respectively, relative to KH2PO4. The lower …
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Phosphorus bioavailability and digestibility in soybean meal, spray dried plasma protein and meat and bone meal determined by different methods in poultry
… and MBM based on tibia ash and estimated using slope-ratio multiple regression analysis were 36, 125, and 76%, respectively. The results of this study indicated the digestibility/relative bioavailability of the P in SDPP was very high for all methods, but values for SBM and MBM varied greatly …
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