Influence of production factors on feed intake and feed conversion ratio of grow-finishing pigs

Caio Abércio Da Silva, Aliny Ketilim Novais, Rita De Kássia Silva Dos Santos, Carlos Rodolfo Pierozan, Piero Da Silva Agostini, Josep Gasa Gasó

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    The aim of this study was to identify and quantify, through mathematical models, the production factors of grow-finishing (GF) phases that influence the daily feed intake (DFI) and feed conversion ratio (FCR) in pigs. Sixty-five GF farms were evaluated between 2010 and 2013, linked to a cooperative system located in the western Parana State, Brazil, representing 463 batches, with a mean of 642.79 ± 363.29 animals per batch, equalling approximately 300,000 animals. Forty production factors were considered that related to management, sanitation, installations and equipment, nutrition, genetics and environment on the farms. The DFI was influenced by the barn's position relative to the sun (P = 0.048), initial body weight (P < 0.0001) and final body weight (P < 0.0001). It was observed that the FCR was influenced by the barn's position relative to the sun (P = 0.0001), the use of humidifiers/misting (P = 0.03), the presence of composters (P = 0.006), trees on the sides of barns (P < 0.045), the initial body weight of the pigs (P<0.0001) and duration of the grow-finishing phase (P < 0.0001). The variables selected in the models explained approximately 44 and 20% of the total variance in the DFI and FCR, respectively, demonstrating that this resource is a good tool for interpreting the factors related to the parameters evaluated.
    Original languageEnglish
    Pages (from-to)997-1008
    JournalSemina:Ciencias Agrarias
    Volume38
    Issue number2
    DOIs
    Publication statusPublished - 1 Mar 2017

    Keywords

    • Management
    • Multilevel modelling
    • Swine

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