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Asian-Australas J Anim Sci > Accepted Articles
DOI: https://doi.org/10.5713/ajas.18.0861    [Accepted] Published online April 15, 2019.
Effects of low-dose organic trace minerals on performance, mineral status, and fecal mineral excretion of sows
Lianxiang Ma1, Junna He1, Xintao Lu1, Jialing Qiu1, Chuanchuan Hou1, Bing Liu1, Gang Lin2, Dongyou Yu1,*
1College of Animal Science, Zhejiang University; Key Laboratory of Animal Nutrition and Feed in East China of Ministry of Agriculture; Hangzhou, Zhejiang Province, 310058, China
2Institute of Quality Standards and Testing Technology for Agricultural Products, Chinese Academy of Agricultural Sciences, Beijing 10081, China
Correspondence:  Dongyou Yu, Tel: +86-057188982107, Fax: +86-057188982107, Email: dyyu@zju.edu.cn
Received: 15 November 2018   • Revised: 30 January 2019   • Accepted: 24 March 2019
To investigate the effects of low-dose trace mineral proteinates on reproductive performance, mineral status, milk immunoglobulin contents and fecal mineral excretion of sows.
Eighty crossbred sows (Landrace × Large White) were randomly allocated to two groups in a 135-day trail, from breeding through 21 d postpartum. The two treatments were ITM: a basal diet + inorganic iron (Fe), copper (Cu), manganese (Mn), and zinc (Zn) at 90, 15, 25 and 90 mg/kg, respectively and OTM: a basal diet + proteinates of Fe, Cu, Mn and Zn at 72, 12, 20 and 72 mg/kg, respectively.
Compared with ITM, OTM significantly increased (p<0.05) the number of piglets with birthweight>1 kg, the litter weaning weight, and milk Fe, Cu contents. No significant differences (p>0.05) were observed on sow hair mineral contents or IgM, IgG and IgA contents in colostrum and milk. In comparsion to ITM, OTM decreased fecal Fe, Cu, Mn and Zn contents of gestating sows (p<0.01) and Fe, Mn and Zn in lactating sows (p< 0.01).
These results indicate that low-dose mineral proteinates can increase the number of piglets with birthweight>1 kg, the litter weaning weight and certain milk mineral concentrations while reducing fecal mineral excretion.
Keywords: Organic Trace Mineral; Reproductive Performance; Mineral Status; Fecal Mineral Excretion; Sow

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