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Open AccessCommunication

Evaluation of Struvite Recovered from Swine Wastewater as an Alternative Phosphorus Source in Broiler Feed

1
Department of Animal Industry Convergence, College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
2
Department of Environmental Science, College of Agricultural Sciences, IUBAT—International University of Business Agriculture and Technology, Dhaka 1230, Bangladesh
3
Department of Animal Resources, College of Life and Environmental Science, Daegu University, Gyeongsan 38453, Korea
4
Department of Veterinary Science, Kangwon National University, Chuncheon 24341, Korea
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Agriculture 2019, 9(10), 221; https://doi.org/10.3390/agriculture9100221
Received: 28 August 2019 / Revised: 9 October 2019 / Accepted: 10 October 2019 / Published: 11 October 2019
The objective of this study was to evaluate the feasibility of reutilizing phosphorus (P) recovered as struvite from swine wastewater as an alternative to commercial P sources in broiler feed. The recovered struvite was pre-treated as microwave irradiated struvite (MS) and incinerated struvite (IS) to reduce the NH4-N concentration in recovered struvite before application. A preliminary study on the growth performance and blood metabolites of broiler chickens was then performed to assess the effect of MS and IS by comparing with commercial monobasic dicalcium phosphate (MDCP, control). A total of 204 male Ross 308 broiler chickens (mean body weight (BW) of 80 ± 5 g) were randomly allotted to each of 12 pens. The growth performance and blood metabolites analysis of broiler chickens showed no significant difference among the test materials (p > 0.05). However, the apparent total tract digestibility of crude fat was significantly higher in MS and IS treated groups compared to the control (p < 0.05). The digestibility of crude ash in control was significantly lower than that in MS (p < 0.05). The results suggested that P recovered from swine wastewater as struvite can be reutilized as an alternative P source in broiler feed without adverse effects on growth performance and blood metabolites through proper pre-treatment. To our knowledge, this is the first study to evaluate the potential of using struvite in animal feed. This study provides primary evidence for the safety and efficacy of using pre-treated struvite as an alternative source of P in animal feed and will encourage further studies with more rigorous design. View Full-Text
Keywords: struvite; swine wastewater; microwave irradiation; incineration; broiler feed struvite; swine wastewater; microwave irradiation; incineration; broiler feed
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Kim, M.; Shim, S.; Reza, A.; Kim, S.; Won, S.; Jung, B.; Kim, J.; Ra, C. Evaluation of Struvite Recovered from Swine Wastewater as an Alternative Phosphorus Source in Broiler Feed. Agriculture 2019, 9, 221.

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