Evaluating poultry feedstuffs in terms of their metabolizable energy content and chemical composition

1975 ◽  
Vol 15 (77) ◽  
pp. 773 ◽  
Author(s):  
N Guirguis
Keyword(s):  
Chemical Composition ◽  
Energy Content ◽  
Basal Diet ◽  
Prediction Equation ◽  
Accurate Estimate ◽  
Metabolizable Energy ◽  
Broiler Chicks ◽  
Feed Ingredients ◽  
The Mean

The metabolizable energy values (ME) of 16 feed ingredients available in Australia were determined with broiler chicks of both sexes. The chickens were fed test diets in which the feed ingredients replaced dextrose in a basal diet. The mean coefficient of variation was low in each determination of ME (range 0.78 to 1.20, mean 0.94 per cent). Sex had no significant effect on the ME value of most feedstuffs with the exception of oats, where ME values were significantly higher for female than for male chicks (P < 0.05). The ME values calculated from the chemical composition of feed ingredients by means of the equations of Sibbald et al; Carpenter and Clegg; and Bolton were considerably higher than that obtained by chick assay. On the other hand ME values of cereals predicted by means of Titus's equation were similar to those obtained in this experiment and to biologically determined values of ME published in the literature. ME values of protein concentrates varied considerably when estimated either by chick assay or by chemical composition. Titus's prediction equation was considered to provide a reasonably accurate estimate of the ME value of a ration where information is available only of the chemical composition of the feed ingredients.

The metabolizable energy content for the chicken of maize and sorghum grain hybrids grown at several geographical regions

1976 ◽  
Vol 16 (82) ◽  
pp. 699 ◽  
Author(s):  
JK Connor ◽  
AR Neill ◽  
KM Barram
Keyword(s):  
Chemical Composition ◽  
Energy Content ◽  
Metabolizable Energy ◽  
Maize Hybrids ◽  
Geographical Regions ◽  
Sorghum Grains ◽  
Commercial Broiler ◽  
The Mean ◽  
Different Strains ◽  
Sorghum Grain

Metabolizable energy assays using Australorp chickens were carried out on sorghum and maize hybrids grown in different regions in Queensland and harvested in different years. Relationships between metabolizable energy and the chemical composition of the grains were examined. Some comparisons also were made between the energy metabolized by different strains of chickens. The mean nitrogen-corrected metabolizable energy values and standard deviations for all maize and sorghum grains were 3770 � 154 (n = 48) and 3750 � 239 (n = 39) kcal per kg dry matter, respectively. There were significant differences in metabolizable energy values between locations and years of harvest for both grains. Significant differences were seen between sorghum hybrids, but not between maize hybrids. The interactions, hybrid x region and hybrid x year, also were significant for sorghum. Correlations between metabolizable energy and chemical composition of the grains were not sufficiently high to enable metabolizable energy to be predicted with the accuracy necessary for practical application. Chickens from a White Leghorn and two commercial broiler strains gave similar metabolizable energy values to those obtained with the Australorp chickens.

scholarly journals Determination of the digestible energy and prediction of the net energy content of toasted and non-toasted canola meals from Brassica junceae and Brassica napus in growing pigs by the total faecal collection and the indigestible marker method

2009 ◽  
Vol 89 (4) ◽  
pp. 481-487 ◽  
Author(s):  
C A Montoya ◽  
P Leterme
Keyword(s):  
Brassica Napus ◽  
Energy Content ◽  
Basal Diet ◽  
Prediction Equation ◽  
Growing Pigs ◽  
Canola Meal ◽  
Net Energy ◽  
Faecal Excretion ◽  
Digestible Energy

The study aimed to compare the digestible and net energy (DE and NE) contents of three canola meals (CM) toasted (95°C) or not after desolventization from yellow Brassica junceae (YBJ) and yellow and black Brassica napus (YBN and BBN) in growing pigs. A basal diet and six CM-based diets (2/3 basal diet and 1/3 CM) supplemented with acid-insoluble ash (indigestible marker) were prepared. The growing pigs (28 kg; six per treatment) were kept in metabolic cages for 18 d and their faeces were collected for the last 10 d. The digestibilities and DE content of the CM were determined based on the total faecal excretion and the indigestible marker method. NE was estimated with a prediction equation. The DE and NE contents of the YBN meal (3.98 and 2.73 Mcal kg-1 DM) were higher (P = 0.007) than that of the YBJ (3.76 and 2.59 Mcal kg-1 DM) and BBN (3.64 and 2.43 Mcal kg-1 DM) meals. Toasting had no effect (P > 0.05) on the DE and NE contents. Inconsistent values were obtained with the indigestible marker, as compared with the total faecal collection method. In conclusion, YBN canola presents the highest energy content, and toasting of CM does not affect its energy values in growing pigs.Key words: Canola meal, growing pigs, toasting, digestible energy, net energy

Determination of chemical composition and metabolizable energy of wastes of spaghetti, pasta, biscuit, crisp, chickpea pre-cleaning and chickpea screening plants

2009 ◽  
Vol 2009 ◽  
pp. 231-231
Author(s):  
E Abdi Ghezeljeh ◽  
M Danesh Mesgaran
Keyword(s):  
Amino Acid ◽  
Chemical Composition ◽  
Metabolizable Energy ◽  
Broiler Chicks ◽  
Official Statistics ◽  
Chick Pea ◽  
East Azerbaijan ◽  
By Products

Based on the official statistics of industries and mines organization about 1000 ton wastes of spaghetti, pasta, biscuit, crisp, and about 7500 ton waste of chick pea pre-cleaning plants are produced annually in East Azerbaijan province of Iran. In our country there is little researches on wastes. In one study, ileal amino-acid digestibility of wheat, autoclaved wheat and spaghetti by-products for broiler chicks was determined (Zaghari 2006). The aim of the present study was to determine metabolizable energy and chemical composition of wastes of spaghetti, pasta, biscuit, crisp, chickpea pre-cleaning and chickpea screening plants.

Energy content of intact and heat-treated dry extruded-expelled soybean meal fed to growing pigs

2021 ◽  
Author(s):  
Bonjin Koo ◽  
Olumide Adeshakin ◽  
Charles Martin Nyachoti
Keyword(s):  
Heat Production ◽  
Soybean Meal ◽  
Energy Content ◽  
Basal Diet ◽  
Growing Pigs ◽  
Metabolizable Energy ◽  
Energy Utilization ◽  
Experimental Unit ◽  
Net Energy ◽  
Heat Treated

Abstract An experiment was performed to evaluate the energy content of extruded-expelled soybean meal (EESBM) and the effects of heat treatment on energy utilization in growing pigs. Eighteen growing barrows (18.03 ± 0.61 kg initial body weight) were individually housed in metabolism crates and randomly allotted to one of three dietary treatments (six replicates/treatment). The three experimental diets were: a corn-soybean meal-based basal diet and two test diets with simple substitution of a basal diet with intact EESBM or heat-treated EESBM (heat-EESBM) at a 7:3 ratio. Intact EESBM was autoclaved at 121°C for 60 min to make heat-treated EESBM. Pigs were fed the experimental diets for 16 d, including 10 d for adaptation and 6 d for total collection of feces and urine. Pigs were then moved into indirect calorimetry chambers to determine 24-h heat production and 12-h fasting heat production. The energy content of EESBM was calculated using the difference method. Data were analyzed using the Mixed procedure of SAS with the individual pig as the experimental unit. Pigs fed heat-EESBM diets showed lower (P &lt; 0.05) apparent total tract digestibility of dry matter (DM), gross energy, and nitrogen than those fed intact EESBM. A trend (P ≤ 0.10) was observed for greater heat increments in pigs fed intact EESBM than those fed heat-EESBM. This resulted in intact EESBM having greater (P &lt; 0.05) digestible energy (DE) and metabolizable energy (ME) contents than heat-EESBM. However, no difference was observed in net energy (NE) contents between intact EESBM and heat-EESBM, showing a tendency (P ≤ 0.10) toward an increase in NE/ME efficiency in heat-EESBM, but comparable NE contents between intact and heat-EESBM. In conclusion, respective values of DE, ME, and NE are 4,591 kcal/kg, 4,099 kcal/kg, and 3,189 kcal/kg in intact EESBM on a DM basis. It is recommended to use NE values of feedstuffs that are exposed to heat for accurate diet formulation.

scholarly journals Predicting corn digestible and metabolizable energy content from its chemical composition in growing pigs

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Quanfeng Li ◽  
Jianjun Zang ◽  
Dewen Liu ◽  
Xiangshu Piao ◽  
Changhua Lai ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Energy Content ◽  
Growing Pigs ◽  
Metabolizable Energy

Field peas: Chemical composition and energy and amino acid availabilities for poultry

1997 ◽  
Vol 77 (2) ◽  
pp. 293-300 ◽  
Author(s):  
F. A. Igbasan ◽  
W. Guenter ◽  
B. A. Slominski
Keyword(s):  
Chemical Composition ◽  
Protein Content ◽  
Dietary Fibre ◽  
Energy Content ◽  
Metabolizable Energy ◽  
Protein Levels ◽  
Field Peas ◽  
Wide Range ◽  
Calcium Phosphorus ◽  
Protein Amino Acids

Twelve pea cultivars (yellow-, green- and brown-seeded) were evaluated for chemical composition and digestibility in poultry. The evaluation involved analyses for protein, amino acids (AAs), fat, starch, dietary fibre, ash, calcium, phosphorus and tannins. True metabolizable energy [nitrogen corrected (TMEn) and uncorrected (TME)] and true AA bioavailability values were also determined with adult cockerels. The cultivars showed a wide range of protein (207.5–264.0 g kg−1) and starch (385.3–436.8 g kg−1) contents which were not related to the seed coat colours. The concentrations of several AAs varied among the cultivars. With the exception of arginine, the concentrations of all other essential AAs on a protein basis decreased as protein levels increased. Out of 10 essential AAs including cystine, only arginine had a positive correlation (r = 0.79) with protein content. The dietary fibre contents varied between 190.7 and 223.1 g kg−1 and the values were slightly higher in the brown-seeded cultivars. The brown-seeded cultivars contained appreciable quantities of tannins, while the yellow- and green-seeded cultivars were devoid of tannins. The cultivars were almost devoid of fat and calcium but relatively high in phosphorus. Starch and dietary fibre were negatively correlated with protein content (r = −0.78 and −0.46, respectively), and accounted for the greatest difference in protein content. The TME values ranged from 11.6 to 13.3 MJ kg−1 while the TMEn values ranged from 11.0 to 12.9 MJ kg−1. The mean availabilities of AAs ranged from a high of 89.6 to a low of 75.9%, with total sulphur AAs (cystine and methionine) having the lowest value and glutamic acid having the highest value. There was a trend (P ≤ 0.05) towards lower AA bioavailability values in the brown-seeded cultivars. It can be concluded that these cultivars varied in chemical composition, metabolizable energy content and bioavailability of AAs. Key words: Field peas, composition, digestibility, chicken, poultry

METABOLIZABLE ENERGY CONTENT OF TOWER AND CANDLE RAPESEEDS AND RAPESEED MEALS DETERMINED IN TWO LABORATORIES

1978 ◽  
Vol 58 (3) ◽  
pp. 485-492 ◽  
Author(s):  
A. JABBAR MUZTAR ◽  
S. J. SLINGER ◽  
H. J. LIKUSKI
Keyword(s):  
Soybean Meal ◽  
Energy Content ◽  
Basal Diet ◽  
Metabolizable Energy ◽  
Ground Seed ◽  
Apparent Metabolizable Energy

True metabolizable energy (TME) of soybean meal and rapeseed products was determined in two laboratories by feeding the ingredients singly or mixed with a basal diet. Apparent metabolizable energy (AME) was also determined on the same samples and the values compared with TME. TME results between the two laboratories agreed well for the soybean meal and rapeseed meals obtained either by feeding the ingredients alone or with the assay diet, but with whole rapeseeds there was wide disagreement. This was due to poor and variable utilization of the whole seeds by birds in the two laboratories. AME values for the whole rapeseeds were considerably lower than expected, but the values for the rapeseed meals were as anticipated. Grinding significantly (P < 0.01) increased the AME of Tower and Candle rapeseed and the TME of Candle rapeseed. Tower and Candle rapeseed meals did not differ significantly in TME or AME; nor were there differences in the ground seed of the two cultivars.

A short note on the metabolizable energy values for broiler chicks of two varieties of field beans (Vicia faba L.) harvested in 1969

1972 ◽  
Vol 79 (1) ◽  
pp. 169-170 ◽  
Author(s):  
D. G. Edwards ◽  
I. F. Duthie
Keyword(s):  
Vicia Faba ◽  
Short Note ◽  
Metabolizable Energy ◽  
Soil Types ◽  
Broiler Chicks ◽  
Individual Values ◽  
Vicia Faba L ◽  
The Mean ◽  
Field Beans

In a previous publication (Edwards & Duthie, 1971) the metabolizable energy values for broiler chicks of 11 samples of winter-sown Throws M. S. field beans from the 1968 harvest were reported. The samples had been grown at different locations in England which represented a variety of soil types. The mean ‘classical’ and nitrogen-corrected metabolizable energy values were 2–40 ± 0–09 kcal/g and 2–26 ±0-11 kcal/g respectively, with as much as 27 % difference between the highest and lowest individual values.

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