Zoning of environmental conditions inside a wean-to-finish pig facility

Massari, Juliana Maria; Moura, Daniella Jorge de; Curi, Thayla M. R. de C.; Vercellino, Rimena do Amaral; Medeiros, Brenda Batista Lemos

doi:10.1590/1809-4430-eng.agric.v36n5p739-748/2016

Cited by 7 publications

(5 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A coefficient of variation is considered low if presents values less than 12%; medium, if ranging from 12 to 24%; and high, if higher than 24% (Massari et al, 2016). Thus, the coefficient of variation was recorded as high for Tmax (54.80%) and medium 7.5Ta 237.3 Ta UR H 6.7 0.243Ta 10 4.18 100…”

Section: Resultsmentioning

confidence: 99%

Enthalpy thematic map interpolated with spline method for management of broiler chicken production

Silva

Santos

Zucca

et al. 2020

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

Owing to the exponential growth of the human population and problems related to food supply, research focused on finding the most suitable approach to manage and geographically explore the environment using sustainable technologies stand out. The present study aims to produce a consistent interpolation of historical series of enthalpy (H) resulting in a thematic map of enthalpy, using the spline method as a kriging option in areas with few sampling points. The thematic map considers thermal comfort conditions to produce broiler chickens, that could be used as a management tool to reduce power consumption due to the cooling process of the facilities. It was verified that spline is an efficient method to create a suitable thematic maps representations of areas presenting a few sampled units. The geographical representation of enthalpy allowed the evaluation of the environments, concluding that the state of Mato Grosso do Sul, Brazil is inadequate for broiler chickens production without suitable thermal cooling systems. Evidence suggests introduction of aviculture in areas still unexplored, e.g., Chapadão do Sul and Sete Quedas.

show abstract

Section: Resultsmentioning

confidence: 99%

Enthalpy thematic map interpolated with spline method for management of broiler chicken production

Silva

Santos

Zucca

et al. 2020

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

show abstract

“…It provides a comfortable environment for the animals, removes gases and heat, and dries the bedding material (Lobeck et al 2011, Pilatti & Vieira 2017. The use of adequate cooling systems and the correct stirring of the bedding material should allow homogeneity of the variables inside the facility (Massari et al 2016). However, few studies have been focused to assess and characterize the bed environment in CBP facilities, mainly because the use of this technique is recent in Brazil.…”

Section: Introductionmentioning

confidence: 99%

Assessment of spatial variability of bedding variables in compost bedded pack barns with climate control system

Oliveira

Damasceno

Ferraz

et al. 2021

An. Acad. Bras. Ciênc.

View full text Add to dashboard Cite

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 (t b-sur ), the bedding temperature at 0.20 m depth (t b-20 ) and the bedding penetration resistance (PR b ) of layer 0 to 0.20 m depth were measured. Bedding samples were collected to obtain the moisture (M b ) 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 t b-sur presented low variability, with 6 ºC of amplitude, and t b-20 presented highest values (up to 55 °C). The spatial distribution of M b-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 PR b occurred in the layer between 0.15 and 0.20 m (0 and 1500 kPa).

show abstract

“…Postweaning is a sensitive phase for piglets [1], particularly for newly weaned piglets, insofar as it results in simultaneous stresses [2,3] that can affect the growth performance and intestinal health of piglets [4]. During this six-week phase, piglets triple their weight and their climatic requirements undergo important changes.…”

Section: Introductionmentioning

confidence: 99%

Energy, Production and Environmental Characteristics of a Conventional Weaned Piglet Farm in North West Spain

et al. 2020

View full text Add to dashboard Cite

Postweaning is one of the most sensitive and energy-demanding phases of swine production. The objective of this research was to assess the energy, production and environmental characteristics of a conventional farm with temperature-based environmental control. The selected energy, environmental and production variables were measured on farm, in a high livestock density area of NW Spain, for seven production cycles. The quantification of variables was aimed at obtaining the maximum performance with the lowest possible use of resources, focusing on animal welfare and production efficiency. The Brown–Forsythe, Welch and Games-Howell tests revealed significant differences in terms of temperature, relative humidity and CO2 concentrations among production cycles, and among the critical, postcritical and final periods. Improved humidity management resulted in a 17% reduction of climate control energy, which involved energy savings in the range of 33% to 47% per kg produced at the end of the postweaning cycle. Accordingly, adding humidity as a control variable could result in higher ventilation rates, thereby improving animal welfare, reducing heating energy use and increasing weight gain per unit climate control energy. In addition, the strong correlations found between heating energy and relative humidity (R2 = 0.73) and ventilation energy and CO2 (R2 = 0.99) suggest that these variables could be readily estimated without additional sensor costs.

show abstract

Zoning of environmental conditions inside a wean-to-finish pig facility

Cited by 7 publications

References 21 publications

Enthalpy thematic map interpolated with spline method for management of broiler chicken production

Enthalpy thematic map interpolated with spline method for management of broiler chicken production

Assessment of spatial variability of bedding variables in compost bedded pack barns with climate control system

Energy, Production and Environmental Characteristics of a Conventional Weaned Piglet Farm in North West Spain

Contact Info

Product

Resources

About