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Asian-Australas J Anim Sci > Accepted
doi: https://doi.org/10.5713/ajas.16.0691    [Accepted]
Growth Performance, Nutrients Digestibility, and Blood Metabolites of Lambs Fed Diets Supplemented with Probiotics during Pre- and Post-Weaning Period
Atef M. Saleem*
South Valley University, Qena, Egypt
1Animal and Poultry Production Department, Faculty of Agriculture, South Valley University, Qena 83523, Egypt, Qena, Egypt
* Corresponding Author: Atef M. Saleem ,Tel: +20965211281 , Fax: +20965211279, Email: atefmsaleem@yahoo.com
Received: 14 September 2016;  Revised: 17 October 2016.  Accepted: 2 December 2016.  Published online 17 December 2016.

Two experiments were conducted to evaluate the effects of inclusion of a commercial probiotic (PRO) contains a mixture of two strains of Pediococcus, Pediococcus acidilactici (1 x 106 cfu/g) and Pediococcus pentosaceus (1.3 x 106 cfu/g), with a dextrose as the carrier compound to a diet based on concentrate mixture and wheat straw on growth performance, digestibility, and blood metabolites of lambs during pre- and post-weaning period.
In exp. 1, 24 male lambs of about 15±2.6 d age and initial BW of 5.52±0.6 kg were randomly allocated into three groups. One group received control diet without additives, and remainders received control diet supplemented with 0.5 or 1 g PRO/d per lamb. Daily feed intake and biweekly BW were recorded. In exp. 2, five lambs, (initial BW = 29.72±1.15 kg, age = 6.54±0.32 mo) were used as experimental animal in a digestion trial. The same diet was used in both experiments.
The supplementation of PRO did not result in any significant differences in milk intake, average daily gain (ADG), or total gain between treatments during the pre-weaning period. Total DMI tended to be greater (P = 0.07) with addition of PRO in the post-weaning diets. During post-weaning phase, the final BW, ADG, total gain, and feed conversion ratio of the lambs received PRO treatments tended to be greater (P ≤ 0.10) than the control group. Addition of PRO in post-weaning diet decreased (P ≤ 0.01) blood urea and cholesterol concentrations. With the exception of ether extract digestibility, all nutrients digestibility were improved with inclusion PRO in the post-weaning diets.
lambs received PRO in post-weaning diet appeared to show a better performance than lambs in pre-weaning period. Addition of the probiotic in the post-weaning diet led to improve DM intake, growth performance, feed conversion ratio, and nutrients digestibility.
Keywords: Probiotic; Growth performance; Digestibility; Lamb; Lambs
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