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Asian Journal of Animal and Veterinary Advances

Year: 2013  |  Volume: 8  |  Issue: 4  |  Page No.: 613 - 621

Effects of Calcium Sources and Levels on Growth Performance and Calcium Bioavailability in Weaning Piglets

H. Jiang, J. Wang, L. Che, Y. Lin, Z. Fang and De Wu


The objective of this study was to investigate the effects of different calcium sources and levels on performance and bioavailability of calcium and phosphorus in weaning piglets. A total of 90 LY (LandracexYorkshire) weaning piglets were randomly assigned to 2x8 factorial completely randomized arrangement. The two calcium sources were calcium carbonate or calcium citrate; Eight dietary calcium levels were 0.37, 0.50, 0.60, 0.70, 0.80, 0.90, 1.00 and 1.10%. Each treatment consisted of 3 replicate pens of 2 piglets. Digestibility trial was conducted from 29 to 32 day of experiment using the total collection method. No significant difference was observed on average daily gain, average daily feed intake and feed conversion rate in piglets (p>0.05) from calcium sources or interactions between calcium sources and calcium levels. There was a quadratic response of average daily gain to increasing calcium levels (p<0.05), with the optimum dietary calcium level of 0.6%. Piglets receiving dietary ranging from 0.37 to 0.80 had a higher calcium, phosphorus apparent digestibility than piglets receiving dietary ranging from 0.90 to 1.10%. Calcium citrate had significantly higher calcium apparent digestibility than calcium carbonate in piglets (p<0.05). It is concluded that calcium citrate is a good calcium source with comparable in bioavailability as calcium carbonate for weaning piglets. The piglets fed 0.6% calcium grew better, regardless of dietary calcium source.

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