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Impact of nutritional strategies in management cost of pig manure

Grant number: 13/14237-2
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): October 01, 2013
Effective date (End): July 31, 2015
Field of knowledge:Agronomical Sciences - Animal Husbandry - Animal Nutrition and Feeding
Principal Investigator:Augusto Hauber Gameiro
Grantee:Esther Ramalho Afonso
Host Institution: Faculdade de Medicina Veterinária e Zootecnia (FMVZ). Universidade de São Paulo (USP). São Paulo , SP, Brazil


The study aims to evaluate the economic effect on practices and technologies adopted in the management of waste with the use of different nutritional strategies of growing and finishing pigs. Specifically, wanted: I) evaluate the economic effect of nutritional strategies in excretion and utilization of phosphorus and nitrogen; II) calculate profit margins of commercialization for the different nutritional strategies; III) evaluate the economic efficiency in the use of minerals; iv) Rate the waste products generated in relation to their potential use as an organic fertilizer; v) Assess the impact of each nutritional strategy on the cost: (composting) and the use of waste products and, about their treatment by bio-digester and later use. Treatments from which the data will be obtained are: T1: diet with high level of crude protein, minimum of amino acids and supplementation without adding phytase and organic minerals (Control Diet); T2: diet formulated from T1, but with a reduction in the level of crude protein, using a supplement of industrial lysine , methionine, threonine and tryptophan, observing the ideal protein of all essential amino acids, with no inclusion of phytase; T3: diet formulated from T1, but with the inclusion of 0.010 phytase and reduction of the levels of calcium and phosphorus in the diet; T4: diet formulated from T1, but with 40% organic mineral supplementation (Cu, Zn and Mn) and 50% inorganic minerals; T5: diet formulated from T1, but combining the treatments T2, T3 and T4, previously described, with inclusion of 0.010 of phytase. Statistical analysis will be performed using the SAS computer package, with a significance level of 5%. The expected results are: the different nutritional strategies provide better use of validated environmental nutrients by reducing the excretion of the environment, at a lower cost in the management of waste. Treatments using phytase and minerals would get better use of phosphorus and nitrogen; Nutritional strategies that used phytase and minerals to obtain higher profit margins of commercialization. Minerals can prove their economic efficiency. Waste generated can be economically feasible compared to use of commercial fertilizers. The generated waste generated of different nutritional strategies can be used economically in both composting and bio-digesters. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PASCALE PALHARES, JULIO CESAR; AFONSO, ESTHER R.; GAMEIRO, AUGUSTO H.. Reducing the water cost in livestock with adoption of best practices. ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY, v. 21, n. 4, p. 2013-2023, . (13/14237-2)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
AFONSO, Esther Ramalho. Impact of nutritional strategies on cost management of pig manure. 2015. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Medicina Veterinária e Zootecnia (FMVZ/SBD) Pirassununga.

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