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Showing 1 to 14 of 14 for “"rooster assay"”.
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Determination of relative metabolizable energy values for fats and oils via the slope-ratio precision-fed rooster assay
… were conducted to determine if the precision-fed 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 …
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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 the precision-fed rooster assay for detecting effects of exogenous carbohydrases and adaptation diet on true metabolizable energy and cecal microbial ecology, short-chain fatty acid profile, and enzyme activity
… were conducted to evaluate the precision-fed rooster assay for its ability to detect effects of supplemental carbohydrase enzymes on nitrogen-corrected true metabolizable energy (TMEn) of feed ingredients for poultry. Experiment 1 evaluated six combinations of various α-galactosidase and …
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Evaluation of several methods for detecting differences in amino acid digestibility among meat and bone meals
… digestibility, the precision-fed cecectomized rooster AA digestibility, the precision-fed chick ileal AA digestibility, the standardized ileal amino acid chick digestibility, and the slope-ratio chick growth lysine bioavailability assays. Pepsin nitrogen digestibility was determined using two …
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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 bone meal (MBM) using different types of assays in poultry. Experiment 1 evaluated the precision-fed rooster assay and determined the effects of increasing P intakes on excreta P retention values using corn and corn supplemented with increasing amounts of KH2PO4 to provide total P intakes …
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Evaluation of in vitro methods to estimate digestibility of amino acids in the rumen undegraded protein fraction of feedstuffs
… three-step, the immobilized digestive enzyme assay ( IDEA), the guanidination, and the furosine in vitro procedures to estimate intestinal digestibility of amino acids in rumen undegraded protein ( RUP-AA). Identifying an in vitro method to estimate RUP-AA digestibility will allow for routine …
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Effects of inulin or yeast cell wall extract on nutrient digestibility and fecal fermentative end-product concentrations of healthy adult dogs fed raw diets
… of the six raw meat-based diets, a cecectomized rooster assay was conducted. Twenty-four, Single Comb White Leghorn cecectomized roosters were used in this study. Each rooster was crop-intubated and given an average of 24 g of each test diet. All excreta were collected and amino acid …
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Nutritional Evaluation Of New Reduced-Oligosaccharide Soybean Meal And Canola Meals Produced From New Varieties Of Canola Seeds For Poultry
… was a true metabolizable energy (TMEn) assay with conventional roosters. The second experiment was a precision-fed cecectomized rooster assay that was conducted to determine TMEn and amino acid digestibility. The third experiment was a standardized ileal amino acid digestibility (SIAAD) …
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Amino acid digestibility of various feedstuffs using different methods
… digestibility are the precision-fed cecectomized rooster assay (PFR) and standardized ileal chick assay (SID). The PFR involves tube-feeding cecectomized adult roosters and excreta are then quantitatively collected for amino acids. For the SID, 3-week-old broiler chicks are ad libitum fed a …
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Nutritional evaluation of conventional, high protein, reduced fiber, and reduced phosphorus corn co-products for poultry
… (RP-DDGS) were evaluated. The precision-fed rooster assay was utilized to measure TMEn and standardized amino acid (AA) digestibility. Corn fermented protein contained an average of 56% CP (DM basis), which was higher than 32% CP for conventional DDGS. The CFP also contained a higher (P < …
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Effect of particle size on nutritional value of soybean meal for poultry
… Experiments 1 and 2 used the precision-fed rooster assay to determine true metabolizable energy corrected to zero nitrogen retention (TMEn) and standardized amino acid digestibility in seven SBM samples that had a mean particle size of < 386, 466, 809, 1,174, 1,577, 2,026, or 2,321 μm. The …
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Evaluation of the nutritional values of seven insect meals for inclusion in poultry diets
… The first six experiments were precision-fed rooster assays to determine TMEn in conventional roosters or amino acid digestibility in cecectomized roosters. The roosters were precision-fed 25 to 30 g of one of seven insect meals which included three different black soldier fly larvae meals …
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Phosphorus bioavailability and digestibility in canola meals determined by different methods
… meal (SBM) using different types of animal assays. Experiment 1 was a chick-growth bioassay conducted to determine relative P bioavailability in the TCM, CCM, and SBM relative to KH2PO4. A phosphorus-deficient cornstarch-dextrose-SBM basal diet was fed as Diet 1. Diets 2 and 3 had 0.05% or …
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Evaluation of red and white sorghum as alternative carbohydrate sources and the effects of extrusion in monogastric nutrition through the determination of macronutrient digestibility, fecal microbiota, digestible and metabolizable energy content
… RSH and WSH grains using the precision-fed rooster assay, 3) compare the raw and extruded RSH and WSH grains in broiler chick diets by evaluating weight gain, feed intake, and feed efficiency, and 4) compare the raw and extruded RSH and WSH grains on total tract nutrient and energy …