Spatial variability and exploratory inference of abiotic factors in barn compost confinement for cattle in the semiarid

Silva, Marcos Vinícius da; Pandorfi, Héliton; Almeida, Gledson Luiz Pontes de; Jardim, Alexandre Maniçoba da Rosa Ferraz; Batista, Pedro Henrique Dias; Silva, Rodes Ângelo Batista da; Lopes, Iug; Oliveira, Maria Eduarda Gonçalves de; Silva, Jhon Lennon Bezerra da; Moraes, Alex Souza

doi:10.1016/j.jtherbio.2020.102782

Cited by 22 publications

(11 citation statements)

References 27 publications

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“…Given this, the best results can also be related to the higher internal bed temperature (BIT), which indicates that, in this condition, the bedding remained within the temperature range considered ideal, as recommended by Janni et al (2006). However, in a study conducted by Silva et al (2020) in a compost barn in the Brazilian semiarid region, the authors observed values bed surface temperature below 30 °C, it differed from the present study.…”

Section: Arqcontrasting

confidence: 99%

“…A significant statistical difference in BST between shifts could only be seen in the second experimental phase (p<0.05), when such variable was below air temperature (AT) in the afternoon shift. This approach is consistent with findings by Silva et al (2020) who observed that the air temperature had a strong relationship with the bed temperature. In the third phase, bed temperature was higher than the air temperature, indicating a more active composting process (Leso et al, 2018).…”

Section: Arqsupporting

confidence: 93%

“…Such condition indicated an accentuated THI result during all phases (>80). In studies conducted in facilities compost barn in Brazilian semiarid region (Silva et al, 2020;Machado et al, 2021) were reported similar findings. The authors observed the THI oscillated between values of 79 and 80, at the hottest times of the day, which is classified as danger thermal stress condition for dairy cows (Hahn et al, 2009).…”

Section: Arqsupporting

confidence: 67%

“…The bed surface temperature (BST) was determined at 60 equidistant points using a 4,800pixel resolution thermographic camera (Fluke® model TiS10, Everett, WA, USA) at a fixed distance of one meter between the observer and the target as described by Peixoto et al (2019) and Silva et al (2020). The analysis of the thermal images was performed using the software SmartView 4.3 (Fluke ® Systems Inc.).…”

Section: Methodsmentioning

confidence: 99%

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Carnauba (copernicia prunifera) straw as an alternative bedding material for dairy cows housed in a Compost barn system

Sampaio

Peixoto

Filho

et al. 2021

Arq. Bras. Med. Vet. Zootec.

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The replacement of bedding in compost dairy barns (CB) comprises a recurrent management practice, but bedding materials are often not readily available in all regions and the choice of alternative materials is necessary. The objective was to evaluate the thermal attributes of carnauba straw (CS) bedding in compost dairy barn facilities. Environmental monitoring operations were performed at a commercial farm located in Northeast Brazil. Mini weather stations were used to evaluate environmental variables. The THI was evaluated as one of the comfort parameters. Analysis of the spatial distribution of bed surface temperature (BST) in the CB was performed using geostatistical techniques. The cows remained out of the comfort zone according to THI results. The BST indicated satisfactory performance and from the thermal point of view can be used as alternative bedding material in CB facilities. However, it was observed that the CS showed fast biomass degradation compared to conventional materials, widely known. In addition, inadequate temperature values (< 45°C) were found in the deeper of the CS bed, signaling higher risks of pathogenic microbial activity. Additional studies are needed for searching the proper management plans that increase the life span of the bed formed by carnauba straw.

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Section: Arqcontrasting

confidence: 99%

Section: Arqsupporting

confidence: 93%

Section: Arqsupporting

confidence: 67%

Section: Methodsmentioning

confidence: 99%

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Carnauba (copernicia prunifera) straw as an alternative bedding material for dairy cows housed in a Compost barn system

Sampaio

Peixoto

Filho

et al. 2021

Arq. Bras. Med. Vet. Zootec.

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“…Although previous studies have carried out the mapping of the thermal environment inside CBP systems, few studies have evaluated this environment under Brazilian winter conditions. The use of this tool in animal ambience is quite satisfactory, and has been carried out by several researchers [ 10 , 11 , 20 , 21 , 22 , 23 , 24 ]. In view of the above, the objective of this study was to evaluate and characterize the dependence and spatial distribution of the thermal environment variables and indices in an open compost-bedded pack barn system with positive-pressure ventilation (CBPPV) during the Brazilian winter period.…”

Section: Introductionmentioning

confidence: 99%

Mapping of the Thermal Microenvironment for Dairy Cows in an Open Compost-Bedded Pack Barn System with Positive-Pressure Ventilation

Oliveira

Tinôco

Damasceno

et al. 2022

Animals

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The objective of this study was to evaluate and characterize the dependence and the spatial and temporal distribution of variables and indices of the thermal environment in an open compost-bedded pack barn system with positive-pressure ventilation (CBPPV) during the winter period. The study was conducted in a CBPPV system located in the Zona da Mata region, Minas Gerais, Brazil. The indoor environment was divided into a mesh composed of 55 equidistant points, where data on dry-bulb air temperature (tdb) and relative humidity (RH) were collected. The collected data were divided into four periods—dawn, morning, afternoon, and night—and mean values were obtained. To evaluate the thermal microenvironment, the temperature and humidity index (THI) and the specific enthalpy of air (h) were used. For spatial dependence analysis, geostatistical techniques were applied. Through the results, a strong spatial dependence was verified for all variables evaluated. Through THI and h maps, conditions of thermal comfort were found for dairy cattle. The highest values of tdb, THI, and h were recorded in the afternoon period in the northwest region of the facility (tdb = 23.2 °C, THI = 69.7, and h = 50.9 kJ∙kg of dry air−1).

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Climatic spatial dynamics in the state of Pernambuco through geostatistical modeling

de Lucas,

de Sousa,

da Silva

et al. 2023

Theor Appl Climatol

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Spatial variability and exploratory inference of abiotic factors in barn compost confinement for cattle in the semiarid

Cited by 22 publications

References 27 publications

Carnauba (copernicia prunifera) straw as an alternative bedding material for dairy cows housed in a Compost barn system

Carnauba (copernicia prunifera) straw as an alternative bedding material for dairy cows housed in a Compost barn system

Mapping of the Thermal Microenvironment for Dairy Cows in an Open Compost-Bedded Pack Barn System with Positive-Pressure Ventilation

Climatic spatial dynamics in the state of Pernambuco through geostatistical modeling

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