Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS

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1 st WorkshopXIII International Feed Technology SymposiumTable 4. Chemical composition of nontreated and corn extruded at 90 and 95°CQualitycharacteristicsNon-treated cornCorn extruded at90°CCorn extruded at95°CMoisture (%) 17,60D.M.basis9,07D.M.basis5,25D.M.basisCrude protein (%) 7,62 9,25 b 8,25 9,07 c 8,50 8,97 aCrude ash (%) 1,51 1,83 b 1,42 1,56 a 1,500 1,58 aCrude cellulose (%) 2,84 3,45 c 2,25 2,47 a 2,65 2,80 bCrude fat (%) 3,96 4,80 c 1,89 2,08 a 2,52 2,66 bNSI 13,11 15,91 b 6,06 6,66 a 5,88 6,21 aStarch (%) 58,42 70,90 c 60,98 67,06 b 61,55 64,98 aTotal sugars (%) 0,82 1,00 a 3,63 3,99 a 3,90 4,12bReducing sugars (%) 0,33 0.40 a 0,380,420,43 0,45 aD.M. – dry matterMean values of quality characteristics expressed on dry matter basis with the sameexponent in the row are not statistically different (p
1 st WorkshopXIII International Feed Technology SymposiumIf extruded corn was included in the diet, chickens grew faster, had better body weight,utilized less feed per kg of body gain in comparison to chickens in control group.In chicken growing, the most evident positive result of the diet with extruded corn, lowmortality should be emphasized. In control and experimantal group total number of deadchickens was 96 and 20, respectively, so concerning better chicken health, the greatadvantage of extruded corn in the diet is obvious. This result is particularly characteristicwithin first four weeks of chicken growing.The other fact, significant for total production effects and realised economic data is thefeed conversion. Calculation of realised feed conversion point at the better results inexperimental group, i.e. in the diet with extruded corn. Feed conversion of totalexperimental and control group was 2,04 kg and 2,13 kg of feed per one kg of bodygain, respectively. Better insight in feed conversion can give the change of feedconversion during growing period.From table 5. it is evident that diet containing extruded corn is beneficial at thebeginning of chicken growing. That is one more proof of extruded corn positiveperformance concerning younger animals. Related to the data from table 5 it is possibleto conclude that the feed consumption is nearly the same in both groups. I should bestressed that experimental group, due to lower mortality, had greater number of chickensat the end of growing period, thus on the whole, better production results wereexperienced if extruded corn was included in the diet.CONCLUSIONBased on presented data it can be concluded that, in comparison to chickens in controlgroup, extruded corn in the diet contributed to:faster growth,better body weightbetter feed utilization per kg of body gain andlower mortality.ACKNOWLEDGEMENTSThese results are a part of the Project No 114-45100645/2009-01, supported by theProvincial Secretariat for Science and Technological Development of Vojvodina.REFERENCES1. Association of official analitical chemistry (A.O.A.C.) (1984): Officialmethods of Analyzis, 14 th ed., Washington, D.C..2. American Oil Chemists Society (A.O.C.S.) (1987): Official and TentativeMethods. Ba 11-65 Nitrogen Solubility Index (NSI), Chanpaign, Illinois .3. Bekrić V. (1999): Industrijska proizvodnja stočne hrane, Beograd4. Douglas J.H., Sullivan T.K., Bond P.L., Struwe F. J. (1990): Nutritientcomposition and metbolizable energy values of selected grain sorghum varietesand yellow corn, Poultry Sci., 698, 1147-1155296
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Effects of dietary n-3 polyunsaturated fatty acids and ... - FINS

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