Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Fatter pigs due to cooling

14.04.2005


Dutch-sponsored researcher Thuy Huynh has discovered that pigs get stressed if they become too warm. They go and lie on the slatted floor, wallow in urine, eat less and grow less as well. With cooling systems, such as floor cooling, sprinkling or water baths, the pigs remain cool and grow better.



Pigs in confinement find it difficult to lose body heat. Therefore their well being is strongly dependent on the ambient temperature. Huynh discovered that they huddled less at a temperature above 16 degrees Celsius. At a temperature of about 19 degrees the animals sought a slatted floor to lie on. They also wallowed in urine and became less active.

If the temperature rises further, the pigs increase their breathing rate and eat less. Finally their body temperature rises. Thuy Huynh discovered that a high temperature, especially in combination with a high relative humidity, results in a poor growth of the pigs.


Reducing heat stress

Providing the pig house with extra cooling in addition to the standard ventilation decreases the heat stress experienced by the pigs. Cooling the floor of the lying area, providing a water bath to bathe in, or regularly spraying water from a sprinkling installation cools down the overheated pigs. As a result of this their feed intake and therefore their growth rate increases.

Pigs are highly sensitive to the ambient temperature. They cannot actively sweat and the evaporation of water from the lungs is also limited. Rapidly-growing domestic pigs also produce more body heat than their wild relatives. Moreover, the fact that they are often kept close together in the pens only exacerbates this problem.

Thuy Huynh’s research was financed by the Netherlands Organisation for Scientific Research (NWO).

Dr Thuy, Huynh T.T. | EurekAlert!
Further information:
http://www.nwo.nl

More articles from Agricultural and Forestry Science:

nachricht Animals and fungi enhance the performance of forests
01.08.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

nachricht Researchers discover natural product that could lead to new class of commercial herbicide
16.07.2018 | UCLA Samueli School of Engineering

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

Im Focus: The “TRiC” to folding actin

Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.

Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...

Im Focus: Lining up surprising behaviors of superconductor with one of the world's strongest magnets

Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur

What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...

Im Focus: World record: Fastest 3-D tomographic images at BESSY II

The quality of materials often depends on the manufacturing process. In casting and welding, for example, the rate at which melts solidify and the resulting microstructure of the alloy is important. With metallic foams as well, it depends on exactly how the foaming process takes place. To understand these processes fully requires fast sensing capability. The fastest 3D tomographic images to date have now been achieved at the BESSY II X-ray source operated by the Helmholtz-Zentrum Berlin.

Dr. Francisco Garcia-Moreno and his team have designed a turntable that rotates ultra-stably about its axis at a constant rotational speed. This really depends...

Im Focus: A molecular switch may serve as new target point for cancer and diabetes therapies

If certain signaling cascades are misregulated, diseases like cancer, obesity and diabetes may occur. A mechanism recently discovered by scientists at the Leibniz- Forschungsinstitut für Molekulare Pharmakologie (FMP) in Berlin and at the University of Geneva has a crucial influence on such signaling cascades and may be an important key for the future development of therapies against these diseases. The results of the study have just been published in the prestigious scientific journal 'Molecular Cell'.

Cell growth and cell differentiation as well as the release and efficacy of hormones such as insulin depend on the presence of lipids. Lipids are small...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

2018 Work Research Conference

25.07.2018 | Event News

 
Latest News

NRL's sun imaging telescopes fly on NASA Parker Solar Probe

13.08.2018 | Physics and Astronomy

UT-ORNL team makes first particle accelerator beam measurement in six dimensions

13.08.2018 | Physics and Astronomy

ASU astrophysicist helps discover that ultrahot planets have starlike atmospheres

13.08.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>