Exit seminar mubbashar iftikhar

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Exit seminar mubbashar iftikhar

  1. 1. Nutrient utilization, nitrogen balanceand weight gain as affected by differentlevels of dietary non-structuralcarbohydrates in lambsMubbashar Iftikhar2006-ag-1027M.Sc. (Hons.) Animal Nutrition
  2. 2. Introduction• Sheep population is 28.4 millions• Overall meat production is 3,232 tons• Beef production is 1,769 tons(Economic Survey of Pakistan 2011-12)• This share can be increase by supplyingadequate nutrients
  3. 3. Current Scenario• Provision of poor quality feed stuffs• low concentration of valuable nutrients• High fiber fractions decreased digestibility ofnutrients• Inadequate availability,• Irregular supply• High cost of carbohydrate energy sources
  4. 4. Possible solution• Provide judicious feed stuffs• Adequate concentration of valuable nutrients• Adequate availability• Regular supply• Adequate levels of non structuralcarbohydrates (NSC) and structuralcarbohydrates affect the productiveperformance of the animals
  5. 5. Structural Carbohydrates• These carbohydrates form an essential dietary"fibre" component of all grazing ruminantanimals• Less digestible than the non structuralcarbohydrates• These include, CelluloseHemicellulosesPectins and b-glucans
  6. 6. Non structural carbohydrates• Non structural carbohydrates are easilydigested by ruminants• Highly fermentable• Non structural carbohydrates include,StarchSimple sugars(e.g., glucose, fructose, sucroseetc)Fructosans
  7. 7. Structural and non structuralcarbohydrates
  8. 8. ObjectiveThe objective of the present study was toexamine the response of alteringconcentrations of NSC on,• Nutrients intake (DM, CP, NDF and ADF)• Nutrient digestibilities (DM, CP, NDF and ADF)• Nitrogen balance and blood urea nitrogen• Weight gain
  9. 9. Materials and MethodsExperimental Animals 20 lambs(5/pen)Treatments 04Diet allocation RandomTrial duration 3 monthStatistical design RCBDFour diets were formulated as,NSC contents (%) Denoted as25 LNSC30 MNSC35 HNSC40 VHNSC
  10. 10. Ingredient composition of experimental diets10IngredientsExperimental Diets25NSC 30NSC 35NSC 40NSCWheat straw 30 25 20 15Corn 15 20 25 30Sun flower meal 17 10 10 9Canola Meal 17 15 15 15Urea 1 1 1 1Rice Polish 0 0 2 3Wheat bran 12 15.5 12 10Corn gluten 30% 0 4 4 4Corn gluten 60% 5 5 5 5Molasses 0 1.5 3 5DCP 1 1 1 1Na-bicarbonate 1 1 1 1Mineral Premix 1 1 1 1Total 100 100 100 100
  11. 11. Chemical composition of experimental dietsIngredientsExperimental Diets25NSC 30NSC 35 NSC 40NSCCrude Protein(%)18.5 18.5 18.5 18.5ME (Mcal/Kg) 2.1 2.16 2.14 2.11NDF (%) 40.34 35.68 31.02 26.59ADF (%) 25.77 21.84 18.94 16.08Lignin 6.36 5.28 4.78 4.23NSC 24.71 30.23 34.79 40.3111
  12. 12. Results
  13. 13. Effect of different dietary non-structural carbohydrateconcentrations on nutrients intake in growing lambsItemsExperimental DietsSE25NSC 30NSC 35NSC 40NSCDM intake875b 1032a 912ab 845b 35.67CP intake159.16b 188.13a 166.0ab 153.79b 7.36NDF intake340.11ab 352.43a 275.97b 212.6c 17.32ADF intake211.13ab 226.0a 165.25b 137.98c 9.7513Means in the same rows bearing different letters were significantly different (P<0.05)
  14. 14. Effect of different dietary non-structuralcarbohydrate concentrations on nutrientsintake in growing lambs02004006008001000120025NSC 30NSC 35NSC 40NSCIntake(g)Treatment %DM intakeCP IntakeNDF IntakeADF intake
  15. 15. Effect of different dietary non-structural carbohydrate concentrations onnutrients digestibility in growing lambsItems%Experimental DietsSE25NSC 30NSC 35NSC 40NSCDry matter63.91c 69.32a 66.17ab 67.19b 1.13CrudeProtein66.41c 71.09a 68.75ab 67.65b 1.07NDF47.32c 58.36a 55.42ab 52.32b 3.21ADF44.23 45.12 44.21 43.98 0.9715Means in the same rows bearing different letters were significantly different (P<0.05)
  16. 16. Effect of different dietary non-structuralcarbohydrate concentrations on nutrientsdigestibility in growing lambs010203040506070809010025NSC 30NSC 35NSC 40NSCNutrientsdigestibility(%)Treatment %DMCPNDFADF
  17. 17. Effect of different dietary non-structural carbohydrate concentrations onnitrogen balance in growing lambsItemsExperimental DietsSE25NSC 30NSC 35NSC 40NSCNutrients intake, g/dIntake g/d 25.46c 30.1a 26.56ab 24.61b 1.97Fecal, g/d 8.69 8.7 8.3 7.96 1.02Fecal nitrogen,%age of intake34.13a 28.90b 31.25b 32.34b 2.96ApparentAbsorption g/d16.77b 21.4a 18.26ab 16.65b 2.32Urinary, g/d 4.76 3.75 4.3c 3.5b 0.17Balance g/d 12.01c 17.65a 13.96b 13.15bc 1.3417Means in the same rows bearing different letters were significantly different (P<0.05)
  18. 18. Effect of different dietary non-structuralcarbohydrate concentrations on nitrogenbalance in growing lambs0246810121416182025NSC 30NSC 35NSC 40NSCNitrogenBalanceTreatment %Nitrogen balanceNitrogen balance
  19. 19. Effect of different dietary non-structural carbohydrate concentrations onblood urea nitrogen in growing lambsItemsExperimental DietsSE25NSC 30NSC 35NSC 40NSC……… 4hr………………BUN2, mg/dL23.12a 20.31b 19.87b 19.18b 2.17……… 8hr………………BUN2,mg/dL19.32 17.45 18.37 18.07 1.32……… 12hr………………BUN2,mg/dL17.31 16.54 16.98 17.32 0.9319Means in the same rows bearing different letters were significantly different (P<0.05)
  20. 20. Effect of different dietary non-structural carbohydrate concentrations onweight gain in growing lambsItemsExperimental DietsSE25NSC 30NSC 35NSC 40NSCFeed Intake,g/d875b 1032a 912ab 845b 35.42Weight gain,g/d139c 189a 150b 145bc 4.37Feedconversionratio6.29a 5.46c 6.08b 5.83bc 0.2120Means in the same rows bearing different letters were significantly different (P<0.05)
  21. 21. Non-structural carbohydrateconcentrations and weight gain in growinglambs02040608010012014016018020025NSC 30NSC 35NSC 40NSCWeightgain(g/d)Treatment %Weight gainWeight gain
  22. 22. Conclusion• Findings of the present study imply that lambsfed 30 % NSC diet consumed morefeed, digested nutrients with better efficiencyand gained more weight compare to25, 35, 40 % NSC

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