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Journal of Applied Sciences

Year: 2012 | Volume: 12 | Issue: 6 | Page No.: 553-560
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Authors

Piya Lampromsuk

Chaiyapoom Bunchasak

Chanwit Kaewtapee

Suriya Sawanon

Theerawit Poeikhampha

Keywords

One hundred and twenty piglets (body weight~7.24 kg, weaned at 24 day of age) were divided into 3 groups with 10 replication of 4 piglets in a completely randomized design. There were 3 feeding consisted; phase I (24-31 days), phase II (32-45 days) and phase III (46-73 days). The diets were divided into 3 treatments by adding 2, 300 ppm of zinc oxide in phase I to II (T1), adding 500 ppm of zinc acetate in phase I to II and plus 3,000 ppm of sodium benzoate based acidifier in all phases (T2) and by adding 500 ppm of zinc acetate in phase I to II and plus 3,000 ppm of formic acid based acidifier in all phases (T3). The results indicated that replacing zinc oxide (T1) by zinc acetate in phase I to II and plus sodium benzoate based acidifier in all phases (T2) significantly increased final body weight, body weight gain (p<0.05) and slightly improved FCR (p>0.05) while feed consumption was not significantly influenced by all dietary treatments. Moreover, the dietary treatments did not affect to intestinal pH, bacteria population and volatile fatty acids in the caecum of pigs. In term of morphology of absorptive cells, the supplementing zinc acetate in phase I to II and plus sodium benzoate based acidifier in all phases (T2) significantly increased villous height in jejunum and ileum (p<0.01), villous width in ileum (p<0.01) and crypt dept in jejunum (p<0.01) compared to T1 and T3. It can be concluded that supplemental organic zinc at 24-45 days of ages and plus several organic acids as acidifiers (sodium benzoate based acidifier) at 24-73 days of ages in diet may the growth performance via mechanism of nutrients absorption improvement.
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