Effect of source and dose of probiotics and exogenous fibrolytic enzymes (EFE) on intake, feed efficiency, and growth of male buffalo ( Bubalus bubalis ) calves

Author： Malik Raman

Publisher： Springer Publishing Company

ISSN： 0049-4747

Source： Tropical Animal Health and Production, Vol.42, Iss.6, 2010-08, pp. : 1263-1269

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Abstract

Probiotics of Lactobacillus acidophilus, Saccharomyces cerevisiae, and Aspergillus niger and three commercial exogenous fibrolytic enzymes (EFE) were tested in vitro to select best source and optimum dose followed by in vivo studies on male buffalo calves. Bacterial (P < 0.001) and="" protozoal="" population="" were="" increased="" significantly="">P < 0.001) with="" probiotics="" and="" efe.="" in="" vitro="" dry="" matter="" digestibility="" was="" more="">P < 0.001) on="">L. acidophilus and then on S. cerevisiae. Dose required for L. acidophilus and S. cerevisiae probiotics was 1 × 10⁹ and 3 × 10⁹ cfu/flask, respectively. Cellulase and xylanase were effective at 4,000 and 12,500 IU/kg DM. In vitro cell wall digestibility was increased (P < 0.001) when="" probiotics="" and="" efe="" were="" used="" together.="" best="" source="" and="" optimum="" dose="" of="" probiotics="" and="" efe="" were="" fed="" to="" 18="" male="" buffalo="" calves="" with="" concentrate="" supplement="" (cs).="" calves="" were="" randomly="" divided="" into="" three="" groups="" either="" without="" probiotics="" and="" efe="" (cg)="" or="" with="" probiotics="">₁) or probiotics combined with EFE (EG₂) on wheat straw diet. Organic matter, neutral detergent fiber, and acid detergent fiber digestibility was improved significantly. Average daily weight gain (ADG) and feed efficiency were significantly higher (P < 0.001) in="">₂ than EG₁ or CG. Final body weight was 4% and 12% and feed efficiency was 2.6% or 1.6% more (P < 0.001) in="">₂ compared to CG or EG₁, respectively. Fortification of CS with probiotics and EFE together had more impact on FE and ADG in buffalo calves.