CHEMICAL CHARACTERIZATION AND FEEDING VALUE OF APOLL RADISH SEED SCREENINGS FOR CHICKS

1981 ◽  
Vol 61 (3) ◽  
pp. 843-845
Author(s):  
HUILE SHEN ◽  
S. LEESON ◽  
J. D. SUMMERS
Keyword(s):  
Fatty Acid ◽  
Amino Acid ◽  
Erucic Acid ◽  
Energy Content ◽  
Chemical Characterization ◽  
Metabolizable Energy ◽  
Broiler Performance ◽  
Feeding Value ◽  
Mineral Analyses ◽  
Radish Seed

Proximate amino acid, fatty acid and mineral analyses of radish seed screenings were undertaken to ascertain potential as a feedstuff. Apart from the screenings containing about 3% erucic acid, no other deleterious constituents were observed. The product was found to have a metabolizable energy content of 18.13 MJ/kg, and broiler performance to 21 days was not affected when diets contained up to 5% of this ingredient.

scholarly journals The energy equivalents of ATP and the energy values of food proteins and fats

1984 ◽  
Vol 51 (1) ◽  
pp. 15-28 ◽  
Author(s):  
Geoffrey Livesey
Keyword(s):  
Fatty Acid ◽  
Amino Acid ◽  
Oxidative Phosphorylation ◽  
G Protein ◽  
Compositional Data ◽  
Metabolizable Energy ◽  
Food Proteins ◽  
Protein Nitrogen ◽  
Food Composition Tables ◽  
Heats Of Combustion

1. Heats of combustion and energy equivalents of cytoplasmic ATP have been estimated for glucose, 101 food proteins and 116 food fats based on amino acid and fatty acid composition data from food composition tables and the heats of combustion and energy equivalents of cytoplasmic ATP of each individual amino acid, fatty acid, glycerol and glucose. The isodynamic equivalents of carbohydrate, fat and protein at the biochemical level have been investigated.2. Heats of combustion of food proteins and fats derived from compositional data were within 1 % of published values obtained by calorimetry.3. Cytoplasmic ATP equivalents for glucose, fat and protein range from 9·0 to 14·7, 8·6 to 14·6 and 6·4 to 13·2 mol cytoplasmic ATP/MJ of metabolizable energy respectively, depending on the choice of mitochondrial proton stoichiometries for these estimations. The range is extended further when considering the level and type of mitochondrial ‘uncoupling’.4. Isobioenergetic relationships between the efficiencies of glucose (G) and fat (F) (F = 1·05 G-0·9) and glucose and protein (P) (P = G(1·02–0·19f)-(1.8+0·5f)) energy conversions (wheref is the fraction of protein oxidized via gluconeogenesis) were obtained and were essentially independent of the choice of mitochondrial proton stoichiometry and the level and type of uncoupling of oxidative phosphorylation.5. Potential errors in previous estimates of ATP yield from protein are shown to be as much as -17·6 to < 118%; accounting for the efficiency of mitochondrial oxidative phosphorylation narrows this to between -7·9 and 17·4% and accounting for the fraction of protein oxidized via gluconeogenesis limits this further to between - 7·9 and 11·1%. Remaining uncertainty is attributed mostly to lack of knowledge about the energy cost of substrate absorption from the gut and transport across cell membranes.6. Coefficients of variation (cv) in the cytoplasmic ATP yield/g protein and /g protein nitrogen for the 101 food proteins were large (0·033 and 0·058 respectively). This is attributed mostly to variation in the metabolizable heats of combustion (cv 0·033 and 0·053 respectively) and to a much smaller extent in the efficiency with which cytoplasmic ATP equivalents are generated/MJ of metabolizable energy (cv 0·01).7. It is concluded that the current understanding of biochemical energy transduction is sufficient to permit only a crude estimate of the energy equivalents of cytoplasmic ATP but that these equivalents vary by less than 5% between both different food proteins and different food fats. Isobioenergetic equivalents for carbohydrates, fats and protein which could be applied to modify the Atwater conversion factors are possible but require first an accurate quantification of the energy equivalent of cytoplasmic ATP for glucose in vivo, and an indication that oxidative phosphorylation is similarly efficient in different individuals.

scholarly journals True nutrient and amino acid digestibility of dog foods made with human-grade ingredients using the precision-fed cecectomized rooster assay1

2019 ◽  
Vol 4 (1) ◽  
pp. 442-451
Author(s):  
Patrícia M Oba ◽  
Pamela L Utterback ◽  
Carl M Parsons ◽  
Kelly S Swanson
Keyword(s):  
Amino Acid ◽  
Energy Content ◽  
Brown Rice ◽  
National Research Council ◽  
Nutrient Digestibility ◽  
Metabolizable Energy ◽  
Dry Matter Digestibility ◽  
Whole Wheat ◽  
The University ◽  
Animal Care

Abstract For a pet diet to be labeled as human-grade, every ingredient and the finished food must be stored, handled, processed, and transported according to the current good manufacturing practices for human edible foods. Human-grade dog foods are now available and increasing in popularity, but little research has been conducted to test the digestibility of these foods. For this reason, the objective of this experiment was to determine the true nutrient and amino acid (AA) digestibilities of dog foods formulated with human-grade ingredients using the precision-fed cecectomized rooster assay. Six commercial dog foods were tested, including the Beef & Russet Potato (BRP), Chicken & White Rice (CWR), Fish & Sweet Potato (FSP), Lamb & Brown Rice (LBR), Turkey & Whole Wheat Macaroni (TWM), and Venison & Squash (VSR) formulas provided by Just Food For Dogs LLC (Irvine, CA). Before analysis, all foods were lyophilized and ground. A precision-fed rooster assay using cecectomized roosters was conducted to determine the true nutrient digestibility and standardized AA digestibilities of the foods tested. Conventional roosters were used to determine the nitrogen-corrected true metabolizable energy (TMEn) of the foods. All animal procedures were approved by the University of Illinois Institutional Animal Care and Use Committee prior to experimentation. The substrates and rooster excreta were analyzed for macronutrient and AA composition. All data were analyzed using the Mixed Models procedure of SAS (version 9.4; SAS Institute, Cary, NC). In general, all foods tested were highly digestible. Dry matter digestibility was similar among CWR, LBR, and TWR foods, and greater (P &lt; 0.0001) than that of FSP and VSR foods. Organic matter digestibility was highest (P = 0.0002) for CWR and lowest (P = 0.0002) for VSR. For the majority of indispensable AA, digestibilities were greater than 85%, with some being greater than 90%. TMEn was higher (P &lt; 0.0001) for BRP than the other foods, which were similar to one another. Also, TMEn values were much higher than what would be estimated by using modified Atwater factors and often above the predictive equations for metabolizable energy (ME) recommended by the National Research Council or by using Atwater factors. Although statistical differences were observed among foods, they all performed well and the foods tested had very high AA digestibilities. Additionally, the TMEn data suggest that existing methods and equations for ME prediction underestimate the energy content of the foods tested.

Fatty acid, amino acid, and trace mineral analyses of five weaning foods from Jos, Nigeria

2002 ◽  
Vol 57 (3/4) ◽  
pp. 257-274 ◽  
Author(s):  
Diane R. Fernandez ◽  
Dorothy J. Vanderjagt ◽  
M. Williams ◽  
Y.-S. Huang ◽  
Lu-Te Chuang ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Amino Acid ◽  
Trace Mineral ◽  
Weaning Foods ◽  
Mineral Analyses

scholarly journals PSVI-4 Digestible and metabolizable energy content, and standardized ileal digestibility of amino acids in novel corn co-products for swine

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 193-194
Author(s):  
Zhaohui Yang ◽  
Amanda Palowski ◽  
Pedro E Urriola ◽  
Gerald C Shurson
Keyword(s):  
Amino Acids ◽  
Energy Content ◽  
Basal Diet ◽  
Metabolizable Energy ◽  
Corn Fiber ◽  
Distillers Grains ◽  
Ileal Digestibility ◽  
Distillers Grains With Solubles ◽  
Dried Distillers Grains ◽  
Feeding Value

Abstract The objective of this study was to determine and compare the digestible energy (DE) and metabolizable energy (ME) content, and standardized ileal digestibility (SID) of amino acids in novel corn co-products and dried distillers’ grains with solubles (DDGS) for swine. Seven corn co-products were evaluated including 2 conventional DDGS (DDGS-A and DDGS-B), 1 corn fiber and solubles (CFS), 2 high protein distillers’ grains (HPDG-A and HPDG-B), and 2 high yeast and protein co-products (HYP-A and HYP-B). In Exp.1, 32 barrows (BW = 24.2 ± 3.4 kg) were housed individually in metabolism crates and randomly allotted to a corn-soybean meal basal diet or 1 of 7 diets containing 30% of a co-product in a randomized two-period crossover design. Feces and urine were collected in 2 periods (7-d adaptation and 4-d collection). In Exp.2, 16 ileal-cannulated barrows (BW = 37.0 ± 3.8 kg) were assigned to 1 of 8 diets in a repeated 8 × 4 Youden square design. An N-free diet, and 7 test diets containing 1 of 7 corn co-products as the sole protein source were used. Diets were fed to pigs for four 7-d periods (5-d adaptation and 2-d ileal digesta collection). The HYP-A and HYP-B had the greatest (P &lt; 0.05) DE (4,309 and 4,183 kcal/kg DM, respectively) and ME (4,118 and 3,972 kcal/kg DM, respectively), and HPDG-B had the lowest (P &lt; 0.05) DE and ME (2,266 and 2,168 kcal/kg DM, respectively) among all corn co-products. The SID of Arg, His, Ile, Lys, Met, Thr, and Val were similar among DGS-B, HPDG-A, HYP-A, and HYP-B, while HPDG-B had the lowest (P &lt; 0.05) SID coefficients for all AA and CP. The high ME and SID Lys, Met, Thr, and Trp content of HYP-A and HYP-B indicate greater feeding value for swine compared to other co-products evaluated.

scholarly journals Use of the precision-fed cecectomized rooster assay to determine standardized amino acid digestibility, true metabolizable energy content, and digestible indispensable amino acid scores of plant-based protein by-products used in canine and feline diets

2021 ◽  
Author(s):  
Lauren M Reilly ◽  
Patrick C von Schaumburg ◽  
Jolene M Hoke ◽  
Gary M Davenport ◽  
Pamela L Utterback ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Protein Quality ◽  
Energy Content ◽  
Metabolizable Energy ◽  
Pet Food ◽  
Indispensable Amino Acid ◽  
Indispensable Amino Acids ◽  
Limiting Amino Acid ◽  
By Products

Abstract Traditionally, protein by-products from oil seeds and cereal grains have been used in pet foods as sustainable, inexpensive, and protein-rich ingredients. However, the on-going demonization of soy- and corn-based ingredients continue to hinder their use in pet food and treat formulations. Ideally, the further demonstration of their protein quality and nutrient composition may encourage their favorable return as acceptable ingredients in pet foods and treats. Therefore, the objectives of this study were to determine the macronutrient composition, indispensable amino acid profile, standardized amino acid digestibility, true metabolizable energy content corrected for nitrogen (TMEn), and digestible indispensable amino acid scores (DIAAS-like) of soy flakes (SF), peanut flour (PF), soybean meal (SBM), and corn gluten meal (CGM). Standardized amino acid digestibility was assessed using the precision-fed cecectomized rooster assay. All test ingredients demonstrated a profile of highly digestible indispensable amino acids except for lysine in PF, which was lowest (P &lt; 0.05) at 45.5%. The SBM and CGM had the highest (P &gt; 0.05) digestibilities of indispensable amino acids. A DIAAS-like values was calculated for each ingredient using either AAFCO (2020) recommended values or NRC (2006) recommended allowances as the reference protein pattern. For adult dogs compared to AAFCO recommended values, the first-limiting amino acid was lysine for PF and CGM but it was methionine for SF and SBM. For adult cats compared to AAFCO recommended values, the first-limiting amino acid was lysine for PF and CGM but it was threonine for SF. There was no first-limiting amino acid in SBM for cats as DIAAS-like values were over 100% for all indispensable amino acids. The TMEn values were highest (P &lt; 0.05) for PF and CGM (4.58 and 4.31 kcal/g [dry matter basis], respectively). The protein quality of these plant-based protein by-products reflect their value as nutritional ingredients for canine and feline diets. However, the prior processing of these by-products must be considered before exposing them to additional processing methods, such as extrusion. Additionally, the inclusion of complementary proteins or supplemental amino acids will be needed to meet all indispensable amino acid requirements for a nutritionally complete and balanced pet food.

Effect of cultivar and enzyme supplementation on nutrient availability and performance of broilers fed Maritime Canadian wheat

2005 ◽  
Vol 85 (4) ◽  
pp. 493-499 ◽  
Author(s):  
J. L. Rafuse ◽  
F. G. Silversides ◽  
M. R. Bedford ◽  
P. H. Simmins
Keyword(s):  
Body Weight Gain ◽  
Metabolizable Energy ◽  
Feed Conversion ◽  
Negative Effects ◽  
Broiler Performance ◽  
Key Words Wheat ◽  
Apparent Metabolizable Energy ◽  
Feeding Value ◽  
Enzyme Supplementation

The feeding value of wheat is affected by the content of soluble non-starch polysaccharides (NSP), which varies among cultivars and the environment in which they are grown. Dietary enzymes can reduce the negative effects of NSP and improve the apparent metabolizable energy (AME) content of the wheat. This study examined differences in feeding value of four wheat cultivars grown in 2 crop years in the Maritime provinces of Canada and the need for enzymes. In a growth trial, diets containing one of the Maritime wheats or corn were fed with or without commercial enzymes containing, for wheat-based diets a mixture of xylanase and protease, and for corn-based diets a mixture of xylanase, protease, and amylase. In a broiler chick bioassay, diets containing 80% wheat were fed with or without a commercial enzyme with xylanase and protease activities. Enzymes significantly lowered body weight gain of birds fed Walton wheat in the second year, and improved the grower feed conversion ratio of birds fed Norboro wheat. Enzyme supplementation significantly improved apparent metabolizable energy and digestibility of crude protein. The AME content did not appear to be a direct indicator of performance. There were significant differences in AME content among the wheat samples. Enzymes generally did not improve performance in this study, possibly due to the relatively low in vitro viscosity values of these samples. Maritime wheats were equal or compared favourably with the sample of wheat from Western Canada and to locally obtained corn. Key words: Wheat, broiler performance, apparent metabolizable energy, enzyme

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