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Showing 1 to 20 of 56 for “"feedstuffs"”.
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The Available Energy Content of Feedstuffs for Swine
Made available in DSpace on 2014-12-05T17:47:47Z (GMT). No. of bitstreams: 1 6104393.pdf: 3390287 bytes, checksum: 50b1fda8ae6456f6c38751528670fd52 (MD5) Previous issue date: 1961
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Amino acid digestibility of various feedstuffs using different methods
… the iii validity of the new PFC, several feedstuffs were obtained and standardized amino acid digestibility was determined using the PFR, PFC and SID methods. Differences in amino acid digestibility were not consistent among methods and ingredients. For corn, the PFC yielded significantly …
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The Energy Value of Various Feedstuffs for The Young Pig
Made available in DSpace on 2014-12-05T17:47:36Z (GMT). No. of bitstreams: 1 5904506.pdf: 2527680 bytes, checksum: 9a646ef108067d7ea46de2bd4cf1b9e5 (MD5) Previous issue date: 1959
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Methodology for evaluating the digestibility and metabolizable energy of poultry feedstuffs
Determining the energy values of feed ingredients for poultry is of great concern, especially since production efficiency is associated with profit margins. Therefore, accurate, precise, and reproducible energy values for feed ingredients are of the utmost importance in formulating an economical …
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Methodology to evaluate the nutritive value of feedstuffs for poultry and swine
Six tropical feedstuffs were analyzed for proximate composition, Van Soest components, mineral contents and amino acid composition. The crude protein contents (dry basis) of cassava tuber meal, sesame oil meal, coconut oil meal, rubber seed meal, cassava leaf meal and sweet potato leaf meal were …
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Evaluation of methodology for determination of availability of amino acids and energy in feedstuffs for poultry
… of amino acids (AA) and energy in various feedstuffs or feed ingredients for poultry. In vitro assays included pepsin digestibility and lanthionine analysis. In vivo methods involved protein quality chick assay, AA bioavailability chick assay, and true AA digestibility and TMEn assay using …
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Evaluation of in vitro methods to estimate digestibility of amino acids in the rumen undegraded protein fraction of feedstuffs
… procedure, digestibility of all AA in all feedstuffs was highly correlated to in vivo data. For the IDEA analysis, IDEA values of intact feeds were highly correlated to RUP-AA digestibility, which indicates that the ruminal incubation step can be eliminated with this method. The …
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Further Evaluation of the Available Phosphorus Requirement of Laying Hens and Methods for Improving the Availability of Phosphorus in Feedstuffs for Poultry
A final laying hen experiment was conducted to evaluate the efficacy of phytase for increasing amino acid utilization of three different laying hen diets. The results indicated that 300 units phytase/kg did not improve amino acid digestibility in laying hen diets containing corn, soybean meal, meat …
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Evaluation of By-product Feedstuffs, Level of Concentrate, and Selenium and Vitamin E Injections on Performance and Health of Beef Calves in Backgrounding Systems
… supplementation, suggesting that by-product feedstuffs may be of value for backgrounding rations. Selenium and vitamin E supplementation did not have any significant effect on calf morbidity.
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Estimation of amino acid digestibility and its usefulness in swine feed formulation
… to compare values obtained for similar feedstuffs by different methodologies or to validate the usefulness of these values in the formulation of diets. Thus, the first objective of this thesis was to develop a data base of amino acid and protein digestibilities using several common …
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Rabbit feeding system : assesment of different digestible units of nitrogen and amino acids in feedstuffs for rabbits = Sistema de alimentación para conejos: definición de las unidades de valoración nitrogenada
El objetivo de esta tesis doctoral es desarrollar un nuevo sistema de valoracion nitrogenada para la formulación de piensos de conejos. Los objetivos han sido determinar las pérdidas nitrogenadas endógenas y comparar la digestibiliad fecal e ileal aparente frente a la digestibilidad ileal …
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Effects of Urea Supplementation in Finishing Diets Containing 25% Modified Distillers Grains on Growth and Carcass Characteristics in Yearling Steers, and in Situ Protein Degradation of Commonly Used Feedstuffs in High Concentrate Rations
… to quantify rumen degradability of protein in feedstuffs commonly used in high concentrate diets. Research suggests that greater concentrations of DIP in finishing diet may be present than what published values predict. To address this hypothesis an in situ trial was conducted to determine DIP …
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Improving estimations of phosphorus bioavailability for lactating dairy cows
… in P concentration or availability in feedstuffs can exacerbate P excretion. To investigate variability in P between and within feedstuffs, 170 feed samples (forages, concentrates, and by-products), were collected from across the U.S., classified by region fed, and analyzed for total P, …
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Models describing ruminal in situ digestion as affected by the lag process and fractionation of substrate
… frequently to evaluate the nutritive value of feedstuffs. Most models assume the existence of a soluble, a potentially digestible, and an indigestible fraction. Some models include a discrete lag time to account for a delay in disappearance when substrate is incubated in the rumen. The …
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Fibre fermentation in the pig intestine : effect on metabolite production and nitrogen excretion
… fermentation characteristics of a selection of feedstuffs in the pig intestines and their potential impact on the gut environment and nitrogen excretion. The evaluation was performed by executing two projects using both in vitro and in vivo studies. The first project focused on the fermentation …
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SEED DISPERSAL ROLE AND NUTRITIONAL STUDIES OF TWO SERRASALMID FRUGIVORE AMAZON FISH, BLACK PACU AND RED PACU
… (ADC) of three local high-carbohydrate feedstuffs (yuca or cassava, plátano or plantain, and pijuayo or peach palm) in black and red Pacu; 4) to examine the feasibility of incorporating cassava, plantain, and peach palm meal in formulated diets for black pacu; and 5) to evaluate and …
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Phosphorus Utilization in Lactating Dairy Cows Fed Increasing Amounts of Dried Distillers Grains with Solubles
… P release varied significantly among the feedstuffs. The readily soluble fraction of P was significantly higher in DOG than in all other feedstuffs. Similarly the effective disappearance of P was greater from DDG sources and CG, intermediate in corn and soybean products with the exception …
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Evaluation of Factors Affecting Digestibility of the Fibrous Portion of Ruminant Diets
… or ensiled at 0, 25, or 50% (DM) with energy feedstuffs--ground corn, corn silage, corn stalklage, or alfalfa haylage. Increasing DWF decreased DM intakes and decreased digestibilities of DM and nitrogen for all rations except stalklage. Hemicellulose of DWF generally was digested well by …
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Physiological consequences of exposure to heat stress and the mycotoxin zearalenone
… effects on their environment and effects on the feedstuffs they consume. The work presented here will address direct effects on the animal (using dairy cattle) and effects on their feed (using pigs). Dairy cattle were chosen to study direct effects on the animal because they exhibit unique …
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