METABOLIZABLE ENERGY CONTENT OF POULT STARTER RATIONS AS AFFECTED BY ANTIBIOTIC SUPPLEMENTATION

1966 ◽  
Vol 46 (1) ◽  
pp. 37-40 ◽  
Author(s):  
R. M. Blakely ◽  
H. I. MacGregor
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Energy Content ◽  
Dietary Treatment ◽  
Basal Diet ◽  
Metabolizable Energy ◽  
Procaine Penicillin ◽  
Turkey Poults ◽  
Stimulation Of

A practical type basal poult starter was supplemented with 17.6 p.p.m. procaine penicillin, and 4 p.p.m. oleandomycin to provide three experimental diets. These were fed to turkey poults from day-old to 38 days of age. Each of the antibiotic-supplemented diets resulted in a significant increase in body weight at 13, 27, and 38 days of age when compared with the unsupplemented basal diet. Metabolizable energy values of the supplemented diets did not differ significantly from that of the control ration. These results confirm previous reports that the stimulation of growth rate of turkey poults as a result of dietary treatment, and in particular antibiotic supplementation, is not necessarily associated with an increase in metabolizable energy values of the diets.

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 < 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 < 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.

Effect of Growth Rate on Mineral Retention and Body Composition of Growing Lambs

1988 ◽  
Vol 1988 ◽  
pp. 102-102 ◽  
Author(s):  
M Wan Zahari ◽  
J K Thompson ◽  
D Scott
Keyword(s):  
Growth Rate ◽  
Body Composition ◽  
Body Weight ◽  
Calcium Carbonate ◽  
Growth Rates ◽  
Fast Rate ◽  
Basal Diet ◽  
Primary Objective ◽  
The Body ◽  
Secondary Objective

The effects of plane of nutrition on the body composition of growing sheep are very apparent when animals are compared at the same age following different nutritional histories. These differences are, however, less obvious when animals of the same breed and sex are compared at the same body weight and at present there is some conjecture whether composition is affected by growth rate. This uncertainty is not limited to fat and protein but includes the bone and ash, fraction and the ash composition.The primary objective of this trial was to study the effects of different growth rates achieved by feeding different amounts of the same concentrate diet on the composition of empty-body gain and on the retention of minerals by growing lambs. A secondary objective was to examine the effect of adding supplementary calcium carbonate to the basal diet at the fast rate of growth.

scholarly journals How did Lofgreen and Garrett do the math?

2019 ◽  
Vol 3 (3) ◽  
pp. 1011-1017
Author(s):  
James W Oltjen
Keyword(s):  
Body Weight ◽  
Energy Content ◽  
Energy System ◽  
Metabolizable Energy ◽  
Net Energy ◽  
Significant Difference ◽  
Linear Fit ◽  
Metabolizable Energy Intake ◽  
Logarithmic Equation ◽  
Finishing Beef Cattle

Abstract Lofgreen and Garrett introduced a new system for predicting growing and finishing beef cattle energy requirements and feed values using net energy concepts. Based on data from comparative slaughter experiments they mathematically derived the California Net Energy System. Scaling values to body weight to the ¾ power, they summarized metabolizable energy intake (ME), energy retained (energy balance [EB]), and heat production (HP) data. They regressed the logarithm of HP on ME and extended the line to zero intake, and estimated fasting HP at 0.077 Mcal/kg0.75, similar to previous estimates. They found no significant difference in fasting HP between steers and heifers. Above maintenance, however, a logarithmic fit of EB on ME does not allow for increased EB once ME is greater than 340 kcal/kg0.75, or about three times maintenance intake. So based on their previous work, they used a linear fit so that partial efficiency of gain above maintenance was constant for a given feed. They show that with increasing roughage level efficiency of gain (slope) decreases, consistent with increasing efficiency of gain and maintenance with greater metabolizable energy of the feed. Making the system useful required that gain in body weight be related to EB. They settled on a parabolic equation, with significant differences between steers and heifers. Lofgreen and Garrett also used data from a number of experiments to relate ME and EB to estimate the ME required for maintenance (ME = HP) and then related the amount of feed that provided that amount of ME to the metabolizable energy content of the feed (MEc), resulting in a logarithmic equation. Then they related that amount of feed to the net energy for gain calculated as the slope of the EB line when regressed against feed intake. Combining the two equations, they estimate the net energy for maintenance and gain per unit feed (Mcal/kg dry matter) as a function of MEc: 0.4258 × 1.663MEc and 2.544–5.670 × 0.6012MEc, respectively. Finally, they show how to calculate net energy for maintenance and gain from experiments where two levels of a ration are fed and EB measured, where one level is fed and a metabolism trial is conducted, or when just a metabolism trial is conducted—but results are not consistent between designs.

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.

Effect of methionine and lysine supplementation of diets for laying hens, on production and feed intake

1976 ◽  
Vol 27 (5) ◽  
pp. 739 ◽  
Author(s):  
MW McDonald ◽  
IJ Bruce
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Egg Production ◽  
Function Analysis ◽  
Basal Diet ◽  
Metabolizable Energy ◽  
Feed Consumption ◽  
Multiple Regression Equation ◽  
Weight Changes ◽  
Egg Weight

Six diets containing five levels of methionine and two of lysme were each fed to 12 Leghorn and 12 Australorp pullets for a period of 16 weeks Body weight changes, egg production, egg weight and feed intake were measured Although responses to the diets did not differ significantly In univariate analyses, multrvarrate analysis lndicated a srgnificant interaction between breeds and diets. Increased methionine produced small, significant Increases In egg weight, although responses were inconsistent at different levels Body weight gains were not significantly different between diets. Egg production and feed consumption were significantly affected by diet?, but the pattern of response was also inconsistent. A discriminate function analysis showed a consistent response to increased methionine, which indicated that the basal diet was deficient and that the pullets required a total of 0 275% methionine in their diet Lysine supplementation produced a 'significant decrease In feed intake but had no significant effect on any other variable.A multiple regression equation relating metabolizable energy intake to the variables measured in the experiment was calculated and compared with others reported In the literature This was used to predict the requirements of the pullets for a number of essential amino acids.

scholarly journals Physicochemical properties and energy content of yellow dent corn from different climatic origins in growing pigs

2020 ◽  
Vol 33 (11) ◽  
pp. 1787-1796 ◽  
Author(s):  
Wenxuan Dong ◽  
Juntao Li ◽  
Zhongchao Li ◽  
Shuo Zhang ◽  
Xiaozhen Li ◽  
...  
Keyword(s):  
Energy Content ◽  
Latin Square ◽  
Dietary Treatment ◽  
Growing Pigs ◽  
Metabolizable Energy ◽  
Southwestern China ◽  
Chemical Compositions ◽  
Ether Extract ◽  
Dent Corn ◽  
Gross Energy

Objective: The objective of this study was to determine the digestible energy (DE) and metabolizable energy (ME) of yellow dent corn sourced from different meteorological origins fed to growing pigs and develop equations to predict the DE and ME of yellow dent corn from southwestern China.Methods: Sixty crossbred barrows were allotted to 20 treatments in a triplicate 20×2 incomplete Latin square design with 3 replicated pigs per dietary treatment during 2 consecutive periods. Each period lasted for 12 days, and total feces and urine during the last 5 days of each period were collected to calculate the energy contents.Results: On dry matter (DM) basis, the DE and ME in 20 corn grain samples ranged from 15.38 to 16.78 MJ/kg and from 14.93 to 16.16 MJ/kg, respectively. Selected best-fit prediction equations for DE and ME (MJ/kg DM basis) for yellow dent corn (n = 16) sourced from southwestern China were as follows: DE = 28.58–(0.12×% hemicellulose)+(0.35×% ether extract)–(0.83×MJ/kg gross energy)+(0.20×% crude protein)+(0.49×% ash); ME = 30.42– (0.11×% hemicellulose)+(0.31×% ether extract)–(0.81×MJ/kg gross energy).Conclusion: Our results indicated that the chemical compositions, but not the meteorological conditions or physical characteristics could explain the variation of energy contents in yellow dent corn sourced from southwestern China fed to growing pigs.

scholarly journals The Growth and Composition of Wool V. Stimulation of Wool Growth by the Abomasal Administration of Varying Amounts of Casein

1969 ◽  
Vol 22 (3) ◽  
pp. 745 ◽  
Author(s):  
PJ Reis
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Sulphur Content ◽  
Wool Growth ◽  
Stimulation Of

In a series of five experiments, varying amounts of casein (60~200 gjday) were given to sheep, in the diet or via the abomasum, as supplements to various diets at several levels of intake (400~1200 gjday). Effects on growth rate and sulphur content of wool and on body weight were investigated.

scholarly journals Digestibility of amino acids, energy, acid hydrolyzed ether extract, and neutral detergent fiber, and concentration of digestible and metabolizable energy in low-oil distillers dried grains with solubles fed to growing pigs1

2019 ◽  
Vol 3 (2) ◽  
pp. 662-675 ◽  
Author(s):  
Charmaine D Espinosa ◽  
Su A Lee ◽  
Hans H Stein
Keyword(s):  
Amino Acids ◽  
Body Weight ◽  
Latin Square ◽  
Basal Diet ◽  
Metabolizable Energy ◽  
Neutral Detergent Fiber ◽  
Ether Extract ◽  
Initial Body Weight ◽  
Distillers Dried Grains ◽  
Gross Energy

Abstract Two experiments were conducted to test the hypothesis that digestibility of amino acids (AA), gross energy (GE), acid hydrolyzed ether extract (AEE), and neutral detergent fiber (NDF), and values for metabolizable energy (ME) in low-oil distillers dried grains with solubles (DDGS) vary among suppliers. In Exp. 1, the apparent total tract digestibility (ATTD) of GE, AEE, and NDF, and concentration of ME were determined in eight sources of DDGS (sources A, B, C, D, E, G, H, and I). A corn-based basal diet and eight diets containing corn and each source of DDGS were fed to 72 barrows (initial body weight = 18.1 ± 1.3 kg) with eight pigs per diet. Feces and urine were collected for 5 d after 7 d of adaptation. The ME did not differ among the eight sources of DDGS with the exception that DDGS source E contained less (P &lt; 0.05) ME than DDGS source D. The ATTD of GE did also not differ among the eight sources of DDGS, but ME and ATTD of GE in corn were greater (P &lt; 0.05) than in the eight sources of DDGS. However, the ATTD of AEE in corn and the eight sources of DDGS was not different, but the ATTD of AEE in DDGS source E was greater (P &lt; 0.05) than in DDGS source A. The ATTD of NDF in DDGS source D was also greater (P &lt; 0.05) than in DDGS sources E, G, and H, but ATTD of NDF did not differ between corn and the eight sources of DDGS. In Exp. 2, standardized ileal digestibility (SID) of AA was determined in seven sources of DDGS (sources A, B, C, D, E, G, and H). Twenty-four barrows (initial body weight = 63.4 ± 3.4 kg) that had a T-cannula installed in the distal ileum were allotted to a two-period incomplete Latin square design with eight diets. Seven diets were formulated to contain each of the seven sources of DDGS and an N-free diet was also used. Ileal digesta were collected for 2 d after 5 d of adaptation. There were no differences between pigs fed DDGS sources A and B in SID of AA, and the SID of Lys, Met, and Trp did not differ among DDGS sources A, B, and E. However, SID of most indispensable and dispensable AA except Gly were greater (P &lt; 0.05) in DDGS source B than in DDGS sources C, D, E, G, and H. In conclusion, variability in SID of AA, ATTD of NDF and AEE, and ME were observed among the sources of DDGS used in this experiment.

Physical form and energy concentrations of broiler diets

1972 ◽  
Vol 12 (59) ◽  
pp. 604 ◽  
Author(s):  
WJ Yule
Keyword(s):  
Body Weight ◽  
Food Consumption ◽  
Energy Content ◽  
Conversion Ratio ◽  
Metabolizable Energy ◽  
Controlled Environment ◽  
Dietary Energy ◽  
Food Conversion ◽  
Floor Space ◽  
Physical Form

Commercial broilers were reared in controlled environment houses to nine weeks of age at 464 cm2 of floor space per bird. The treatments over the starter and finisher phases were two metabolizable energy concentrations of 11.5 and 13.2 MJ kg-1 each in either mash or pelleted form with a commercial pellet treatment as a control. Dietary energy content was negatively correlated with food conversion ratio but did not significantly influence liveweight. Pelleting significantly increased liveweight and improved food efficiency. There was no evidence of an interaction between dietary energy content and physical form of the diet. The increased cost of the higher energy diet counterbalanced the decreased food consumption per unit of body weight.

Mustard cake a substitute for groundnut cake in egg-type and meat-type chick diets

1977 ◽  
Vol 89 (3) ◽  
pp. 759-765 ◽  
Author(s):  
V. K. Cilly ◽  
G. N. Lodhi ◽  
J. S. Ichhponani
Keyword(s):  
Growth Rate ◽  
Body Composition ◽  
Crude Protein ◽  
Nutritive Value ◽  
Energy Content ◽  
The Body ◽  
Metabolizable Energy ◽  
Groundnut Cake ◽  
True Protein ◽  
Meat Type

SummaryExperiments were made to assess the nutritive value of expeller-proeessed mustard cake (MS) for egg-type and meat-type chicks. Eight samples of MS on average contained 37·2% crude protein, 27·5% true protein, 12·6% available carbohydrate and 2·09 % tannins. The average metabolizable energy content (ME) of eight samples of MS for egg-type and meat-type chicks were 2350 and 2300 kcal/kg respectively. MS in the diet replacing groundnut cake (GN) which formed 30–32 % of the control diets was found to have no effect on growth rate of the chicks of either breed although there was thyroid enlargement. MS was also found not to affect the body composition of the chicks.

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