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Research Article

The Effect of Fasting Birds Period on the Metabolic Plus Endogenous Energy Losses for True Metabolisable Energy Values of Feedstuffs

Akbar Yaghobfar
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An experiment was made to study the effect of the duration of the excreta collection period on the True Metabolizable Energy (TME) values of cereals as wheat, maize and barley and wheat bran. The experiment was performed with 48 mature Cornish and Rhode Island Red (RIR) cockerel strains, under standard conditions. Droppings voided during the experimental period were collected and assayed for gross energy and nitrogen. The results showed that the rate of excretion of EEL (32.71% for Cornish and 17.82% for RIR) and nitrogen (40.26% for Cornish and 22.80% for RIR) voided by adult birds of two strains decreases during the period of fasting bird (12 to 72 h). The effect of fasting period (12, 24, 48 and 72 h) on the TME values obtained of barley, wheat and maize 18.98, 6.24 and 16.32% for Cornish and 12.78, 7.82 and 8.31% for RIR birds, were significantly due to be reduced respectively. The finding of this study proves those 48 h fasting birds of two strains are suitable for routine of excreta collection time on estimates of metabolic plus endogenous energy losses for true metabolisable energy values for cereals such as wheat, wheat bran, maize and barley.

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  How to cite this article:

Akbar Yaghobfar , 2005. The Effect of Fasting Birds Period on the Metabolic Plus Endogenous Energy Losses for True Metabolisable Energy Values of Feedstuffs. Pakistan Journal of Biological Sciences, 8: 1392-1396.

DOI: 10.3923/pjbs.2005.1392.1396


1:  Sibbald, I.R., 1975. The effect of level of feed intake on metabolizable energy values measured with adult roosters. Poult. Sci., 54: 4990-4997.

2:  Warnig, J.J. and W.O. Brown, 1965. A respiration chamber for the study of energy utilization for maintenance and production in the laying hen. J. Agric. Sci. Camb., 65: 139-139.

3:  Shires, A., A.R. Robblee, R.T. Hardin and D.R. Clandinin, 1980. Effect of the age of chickens on the true metabolizable energy values of feed ingredients. Poult. Sci., 59: 396-403.

4:  Edmundson, I.C., 1979. True Metabolizable Energy Trial ME gG 1. Current Research Poultry Research Center, Massey University, New Zealand.

5:  Edmundson, I.C., 1980. The true metabolizable energy of meat and bone meal. Proceeding South Pacific Poul. Science Conv., pp: 20-25.

6:  Sibbald, I.R. and K. Price, 1980. Variability in metabolic plus endogenous energy losses of adult cockerels and in the true metabolizable energy values and rates of passage of dehydrated alfalfa. Poult. Sci., 59: 1275-1279.

7:  Sibbald, I.R., 1981. Metabolic plus endogenous energy and nitrogen losses of adult cockerels the correction used in the bioassay for true metabolizable energy. Poult. Sci., 60: 805-811.

8:  Yaghobfar, A., 2001. Effect of genetic line, sex of birds and the type of bioassay on the metabolizable energy value of maize. Br. Poult. Sci., 42: 350-353.

9:  Yaghobfar, A., 2003. Endogenous losses of energy (EEL) and amino acid (EEL) in chickens and their effect on true metabolizable energy values and available of amino acids in maize. Br. Poult. Sci., 44: 719-725.

10:  Hallsworth, E.G. and J.I. Conates, 1962. The growth of the alimentary tract of the fowl and the goose. J. Agric. Sci. Camb., 58: 153-163.

11:  Rolls, B.A., A. Turvey and M.E. Coates, 1978. The influences of the gut micro flora and of dietary fiber on epithelial cell migration in chick intestine. Br. J. Nutr., 39: 91-98.

12:  Shires, A., A.R. Robblee, R.T. Hardin and D.R. Clandinin, 1979. Effect of previous diet body weight and duration of starvation of the assay bird on the true metabolizable energy value of corn. Poult. Sci., 58: 602-608.

13:  Sibbald, I.R., 1981. Metabolic plus endogenous energy excretion by fowl. Poult. Sci., 60: 2672-2977.

14:  Sibbald, I.R., 1976. The effect of the duration of starvation of the assay bird on true metabolizable energy values. Poult. Sci., 55: 1578-1579.

15:  Macleod. M.G., K. Bernard and H. Knowles, 2002. A Comparison of the True Metabolizable Energy of Wheat and Soya Bean in 28 Day Old Turkeys and Broiler. Roslin Institute (Edinburgh), Roslin, Midlothian EH25 9PS, Scotland.

16:  Sibbald, I.R., 1976. A bioassay for true metabolizable energy in feedingstuffs. Poult. Sci., 55: 303-308.
CrossRef  |  Direct Link  |  

17:  Sibbald, I.R., 1980. Recent Advances in Animal Nutrition. Butterworths, London, pp: 35.

18:  McNab, J.M. and C. Fisher, 1981. The choice between apparent and true metabolizable energy systems recent evidence. Proceedings of the 3rd Europion Symposium on Poultry Nutrition, (ESPN'81), Edinburgh, pp: 45-55.

19:  Sibbald, I.R., 1986. The TME system of feed evaluation: Methodology feed composition data and bibliography. Animal Research Centre, Research Branch Agriculture Canada, Ottawa, Technical Bulletin 1986-4E, Pages: 114.

20:  AOAC, 1990. Official Method of Analysis. 15th Edn., Association of Official Analytical Chemists, Washington, DC.

21:  Farrell, D.J., 1978. Rapid determination of metabolisable energy of foods using cockerels. Br. Poult. Sci., 19: 303-308.
CrossRef  |  Direct Link  |  

22:  Farrell, D.J., 1980. True Metabolizable Energy (TME) and the Alternative. In: Recent Advances in Animal Nutrition, Farrell, D.J. (Ed.). New England Publication Unit, Armidale, N.S.W., Australia, pp: 146-153.

23:  Fisher, C. and J.M. Mcnab, 1989. Techniques for Determining the Metabolizable Energy Content of Poultry Feeds. In: Recent Developments in Poultry and Nutrition, Col, D.J.A. and W. Haresign (Eds.). Butterworths, London, pp: 54.

24:  Muztar, A.J. and S.J. Slinger, 1981. An evaluation of the nitrogen correction the true metabolizable energy assays. Poult. Sci., 60: 835-839.

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