scholarly journals The Effects of Heat, Water, Acid, and Alkali Treatment of Tomato Cannery Wastes on Growth, Metabolizable Energy Value, and Nitrogen Utilization of Broiler Chicks

1992 ◽  
Vol 71 (3) ◽  
pp. 522-529 ◽  
Author(s):  
M.W. SQUIRES ◽  
E.C. NABER ◽  
V.D. TOELLE
Keyword(s):  
Alkali Treatment ◽  
Nitrogen Utilization ◽  
Metabolizable Energy ◽  
Broiler Chicks ◽  
Energy Value ◽  
Acid And Alkali Treatment

scholarly journals Environmental temperature and broiler age on corn energy value

2021 ◽  
Vol 22 ◽  
Author(s):  
Fabyola Barros Carvalho ◽  
José Roberto Sartori ◽  
Antonio Celso Pezzato ◽  
Vitor Barbosa Fascina ◽  
Pedro Gibim Castelo ◽  
...  
Keyword(s):  
Environmental Temperature ◽  
Heat Exposure ◽  
Basal Diet ◽  
Metabolizable Energy ◽  
Broiler Chicks ◽  
Test Diet ◽  
Mean Values ◽  
Energy Value ◽  
Randomized Design ◽  
Main Plot

Abstract This study aimed to assess the effects of environmental temperature and age of broilers on the energy value of corn. A total of 288 Cobb 500 chicks were distributed in a complete randomized design with a split-plot arrangement and six replications of six chicks each. The main plot consisted of three temperatures (cold: 18 ºC; thermoneutral: 25 ºC; and hot: 33 ºC), while the secondary plot consisted of age (initial: 11 to 14 days; growing: 25 to 28 days; and final: 39 to 42 days). The basal diet was based on corn and soybean meal. The test diet was produced by replacing the basal diet for test food: 40% corn + 60% basal diet. The mean values of AMEn observed for broiler chicks under cold, thermoneutral, and hot temperatures were 3322, 3279, and 3233 kcal/kg of natural matter, respectively, and 3215, 3218, and 3400 kcal/ kg of natural matter for the initial, growing, and final phases, respectively. Overall, the metabolizable energy values of corn and the balance and coefficients of metabolizability of nutrients in the test diet increased with the broiler age, but the true metabolizable energies of corn were not affected by environmental temperature. The balance and coefficients of metabolizability of nutrients in the test diet decreased due to heat exposure during the growing and final phases.

scholarly journals Chemical composition and energy value of guava and tomato wastes for broilers chickens at different ages

2011 ◽  
Vol 40 (5) ◽  
pp. 1019-1024 ◽  
Author(s):  
Rosa Cavalcante Lira ◽  
Carlos Bôa-Viagem Rabello ◽  
Edney Pereira da Silva ◽  
Paulo Vanderlei Ferreira ◽  
Maria do Carmo Mohaupt Marques Ludke ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Phase 1 ◽  
Metabolizable Energy ◽  
Poultry Feed ◽  
Broiler Chicks ◽  
Energy Value ◽  
Tomato Waste ◽  
Randomized Design ◽  
Different Ages ◽  
Apparent Metabolizable Energy

The chemical composition and energy value of guava and tomato wastes for broilers at different ages were determined in this research. The metabolism assays were carried out by using the methodology of total excreta collection to calculate the chemical composition of wastes collected in different months. A total of 270 COBB broiler chicks was used: 150 in the period from 1 to 8 days of age (phase 1) and 120 chicks were used in the period from 10 to 17 days of age (phase 2). The trials were analyzed as completely randomized design with three treatments with five replications of 10 and 8 birds at the respective ages. The treatments consisted of different diets: one reference diet, one with 30% tomato meal and another with 20% guava meal, both partially replacing the reference diet. The values of the chemical composition of guava and tomato wastes varied according to the collection season. The chemical composition indicated that the wastes can be used in poultry feed, but with high crude fiber contents. The values of apparent metabolizable energy and nitrogen-corrected apparent metabolizable energy and of gross energy metabolizability coefficient of guava waste was not affected by the birds age, different from the result observed for tomato waste, whose digestibility coefficients and apparent metabolizable energy values varied among growing phases. The apparent metabolizable energy values (AME) for broilers form 1 to 8 and from 10 to 17 days of age were 1,331 and 1,358 kcal/kg for guava waste and from 2,351 to 2,465 kcal/kg for tomato waste.

scholarly journals Methods for predicting the energy value of pet foods

2009 ◽  
Vol 38 (spe) ◽  
pp. 1-14 ◽  
Author(s):  
Carlos Castrillo ◽  
Marta Hervera ◽  
Maria Dolores Baucells
Keyword(s):  
Near Infrared ◽  
Metabolizable Energy ◽  
Apparent Digestibility ◽  
Crude Fibre ◽  
Near Infrared Reflectance ◽  
Energy Value ◽  
Close Relationship ◽  
Accuracy Of Prediction

The energy value of foods as well as energy requirements of dogs and cats is currently expressed in terms of metabolizable energy (ME). The determination of ME content of foods requires experimental animals and is too expensive and time consuming to be used routinely. Consequently, different indirect methods have been proposed in order to estimate as reliably an accurately as possible the ME content of pet food. This work analyses the main approaches proposed to date to estimate the ME content of foods for cats and dogs. The former method proposed by the NRC estimates the ME content of pet foods from proximal chemical analysis using the modified Atwater factors, assuming constant apparent digestibility coefficients for each analytical fraction. Modified Atwater factors systematically underestimate the ME content of low-fibre foods whereas they overestimate those that are high in fibre. Recently, different equations have been proposed for dogs and cats based in the estimation of apparent digestibility of energy by the crude fibre content, which improve the accuracy of prediction. In any case, whatever the method of analysis used, differences in energy digestibility related with food processing and fibre digestibility are unlikely to be accounted for. A simple in vitro enzymatic method has been recently proposed based in the close relationship that exist between energy digestibility and organic matter disappearance after two consecutive enzymatic (pepsin-pancreatin) incubation of food sample. Nutrient composition and energy value of pet foods can be also accurately and simultaneously predicted using near infrared reflectance spectroscopy (NIRS).

scholarly journals Metabolizable Energy Value of Crude Glycerol for Laying Hens

2008 ◽  
Author(s):  
Kristjan Bregendahl ◽  
Peter J. Lammers ◽  
Brian Kerr ◽  
Mark S. Honeyman ◽  
Kenneth J. Stalder ◽  
...  
Keyword(s):  
Crude Glycerol ◽  
Laying Hens ◽  
Metabolizable Energy ◽  
Energy Value
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