Assessment of spatial variability of bedding variables in compost bedded pack barns with climate control system
| Autor: | Felipe A. O. Vega, R. R. Andrade, Flávio Alves Damasceno, Gabriel Araújo e Silva Ferraz, Ilda de Fátima Ferreira Tinôco, Carlos Eduardo Alves Oliveira, João Antônio Costa do Nascimento |
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| Rok vydání: | 2020 |
| Předmět: |
Bedding
Science Soil science Geostatistics engineering.material Spatial distribution Animals geostatistics Multidisciplinary Moisture Compost Composting 0402 animal and dairy science dairy cattle Bedding and Linens 04 agricultural and veterinary sciences 040201 dairy & animal science Housing Animal Dairying compost barns 040103 agronomy & agriculture engineering 0401 agriculture forestry and fisheries Environmental science Spatial variability spatial variability Barn (unit) Brazil Evaporative cooler |
| Zdroj: | Anais da Academia Brasileira de Ciências v.93 n.3 2021 Anais da Academia Brasileira de Ciências Academia Brasileira de Ciências (ABC) instacron:ABC Anais da Academia Brasileira de Ciências, Vol 93, Iss 3 (2021) |
| ISSN: | 1678-2690 |
| Popis: | The aim of this research was to evaluate the spatial distribution of bedding variables in a climate-controlled compost bedded pack barn (CBP) equipped with an evaporative cooling system associated with a tunnel ventilation mode. The study was conducted on a farm in the West Mesoregion of Minas, MG, Brazil. The interior of the animal facility was divided into a mesh of 120 equidistant points, where the bedding surface temperature (tb-sur), the bedding temperature at 0.20 m depth (tb-20) and the bedding penetration resistance (PRb) of layer 0 to 0.20 m depth were measured. Bedding samples were collected to obtain the moisture (Mb) and pH in the surface and at 0.20 m depth. Geostatistics technique was used to evaluate the dependence and spatial distribution. Through the bedding area, the tb-sur presented low variability, with 6 oC of amplitude, and tb-20 presented highest values (up to 55 °C). The spatial distribution of Mb-20 was similar to that observed on the surface and its highest levels occurred in the region near the feed alley (> 40%). The distribution of pH was similar in both layers. The tendency of high PRb occurred in the layer between 0.15 and 0.20 m (0 and 1500 kPa). |
| Databáze: | OpenAIRE |
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