scholarly journals The Effect of Steam Pelleting Feed Ingredients on Chick Performance: Effect on Phosphorus Availability, Metabolizable Energy Value and Carcass Composition

1968 ◽  
Vol 47 (4) ◽  
pp. 1140-1148 ◽  
Author(s):  
H.S. Bayley ◽  
J.D. Summers ◽  
S.J. Slinger
Keyword(s):  
Phosphorus Availability ◽  
Carcass Composition ◽  
Metabolizable Energy ◽  
Feed Ingredients ◽  
Performance Effect ◽  
Energy Value

scholarly journals The Metabolizable Energy Value of Some Feed Ingredients for Young Chicks

1976 ◽  
Vol 55 (2) ◽  
pp. 611-618 ◽  
Author(s):  
J.A. Oluyemi ◽  
B.L. Fetuga ◽  
H.N.L. Endeley
Keyword(s):  
Metabolizable Energy ◽  
Feed Ingredients ◽  
Energy Value ◽  
Young Chicks

A comparison of wheat and barley as supplements to grass silage for finishing beef cattle

1993 ◽  
Vol 56 (1) ◽  
pp. 61-67 ◽  
Author(s):  
R. W. J. Steen
Keyword(s):  
Beef Cattle ◽  
Spring Barley ◽  
Live Weight ◽  
Ammonia Nitrogen ◽  
Carcass Composition ◽  
Metabolizable Energy ◽  
Crude Fibre ◽  
Grass Silage ◽  
Soya Bean Meal ◽  
Finishing Beef Cattle

AbstractTwo randomized-block experiments were carried out to examine the relative value of wheat and barley as supplements to grass silage for finishing beef cattle. In each experiment unwilted, formic acid-treated silage was offered ad libitum and supplemented with 500 g soya-bean meal and 50 g minerals and vitamins to 44 12-month-old bulls for 157 and 172 days in experiments 1 and 2 respectively. Twelve of the animals also received 2·5 kg rolled spring barley (LB), 12 received 4·0 kg barley (HB) and 20 received 3·25 kg rolled wheat (W). For experiments 1 and 2 respectively the barley contained 796 and 787 g dry matter (DM) per kg; 118 and 105 g crude protein (CP) per kg DM; 47 and 57 g crude fibre per kg DM; the wheat contained 845 and 800 g DM per kg; 112 and 116 g CP per kg DM; 23 and 25 g crude fibre per kg DM; and the silages contained 190 and 177 g DM per kg; 153 and 176 g CP per kg DM; 80 and 104 g ammonia-nitrogen per kg total nitrogen. On average over the two experiments, for treatments LB, HB and W respectively, silage DM intakes were 5·4, 4·7 (s.e. 0·14) and 4·9 (s.e. 0·11) kg/day; total DM intakes 7·9, 8·3 (s.e. 0·14) and 8·1 (s.e. 0·11) kg/day; metabolizable energy intakes 91·4, 97·8 and 94·2 MJ/day; live-weight gains 1·04,1·19 (s.e. 0·029) and 1·10 (s.e. 0·023) kg/day and carcass gams 0·65, 0·77 (s.e. 0·017) and 0·70 (s.e. 0·013) kg/day. It is concluded that the feeding value of wheat was proportionately 0·98 of that of barley for finishing beef cattle when given as a supplement to grass silage, and that the type of cereal offered did not affect silage intake or carcass composition.

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

The nutritive value for ruminants of a complete processed diet based on barley straw

1970 ◽  
Vol 74 (2) ◽  
pp. 311-314 ◽  
Author(s):  
F. W. Wainman ◽  
K. L. Blaxter ◽  
J. D. Pullar
Keyword(s):  
Organic Matter ◽  
Research Council ◽  
Nutritive Value ◽  
Agricultural Research ◽  
Nitrogen Retention ◽  
Metabolizable Energy ◽  
Barley Straw ◽  
Energy Value ◽  
Agricultural Research Council

SUMMARYCalorimetric experiments were made with a complete extruded diet for ruminants, ‘Ruminant Diet A’ prepared by Messrs U.K. Compound Feeds Ltd. Twelve determinations of energy and nitrogen retention were made using sheep and it was found that the diet had a metabolizable energy value of 2–32 kcal/g organic matter, and the net availabilities of its metabolizable energy were 42–7 % for fattening and 68–0 % for maintenance. These values agreed well with those predicted from equations published by the Agricultural Research Council. On a dry basis the starch equivalent was 38–3 %.

scholarly journals Stearic Acid Absorption and Its Metabolizable Energy Value Are Minimally Lower than Those of Other Fatty Acids in Healthy Men Fed Mixed Diets

2003 ◽  
Vol 133 (12) ◽  
pp. 4129-4134 ◽  
Author(s):  
David J. Baer ◽  
Joseph T. Judd ◽  
Penny M. Kris-Etherton ◽  
Guixiang Zhao ◽  
Edward A. Emken
Keyword(s):  
Fatty Acids ◽  
Stearic Acid ◽  
Metabolizable Energy ◽  
Healthy Men ◽  
Energy Value ◽  
Acid Absorption

The effects of live weight at weaning on growth rate and carcass composition at different stages of maturity in Scottish Blackface lambs fed on two different diets

1988 ◽  
Vol 47 (3) ◽  
pp. 401-409 ◽  
Author(s):  
J. M. Doney ◽  
J. A. Milne ◽  
T. J. Maxwell ◽  
Angela M. Sibbald ◽  
A. D. M. Smith
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Relative Difference ◽  
Carcass Composition ◽  
Metabolizable Energy ◽  
Energy Ratio ◽  
Weaning Weight ◽  
Slaughter Weight ◽  
Protein Energy ◽  
The Difference

ABSTRACTThe effects of live weight at weaning on carcass composition were studied with 104 Scottish Blackface lambs offered two diets differing in protein: energy ratio. Groups of lambs were slaughtered at initial live weights of 24·1 (s.e. 1·48) kg (LL) and 28·9 (s.e. 1·67) kg (IL) and at 33 kg, 38 kg, 43 kg, 53 kg and mature live weight.Lambs were offered two diets — low protein: energy ratio (LP, 122 g crude protein (CP) per kg dry matter (DM): 10·4 MJ metabolizable energy (ME) per kg DM) and high protein: energy ratio (HP, 176 g CP per kg DM: 10·4 MJ ME per kg DM). The LP diet was offeredad libitumand the HP diet was restricted to a similar mean level. Muscle, fat and bone tissues in the carcass were separated and weighed and the carcass and non-carcass component tissues were analysed for chemical fat, protein and ash.Daily live-weight gain (DLWG) of HP lambs (148 (s.e. 8·1) g/day) was significantly higher than that of LP lambs (118 (s.e. 8·1) g/day;P< 0·05) and food conversion ratios were lower up to a live weight of 43 kg (P< 0·05). There were no differences in intake or DLWG between LL and IL lambs. Mature live weight (73·3 (s.e. 1·79) kg) was not related to weaning weight or post-weaning diet.There was no effect of diet on carcass composition at any slaughter weight but LL lambs had a higher fat proportion than IL lambs, which was significant (P< 0·05) at 33 kg only. During the feeding period, the increment of fat tissue per unit increase in live weight (348 (s.e. 15·8) g/kg LW) was not affected by live weight at the start of the diet. The difference between LL and IL lambs in fat proportion was directly related to the difference in weight gain required to reach slaughter weight. The difference was not a function of stage of maturity but only of weaning weight, itself largely determined by pre-weaning nutrition. At higher slaughter weights the relative difference decreased and became non-significant. Hence lambs lighter at weaning would be less suitable than heavier lambs for the production of light-weight lean carcasses.

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