scholarly journals ENERGY METABOLISM AND PRODUCTIVITY OF FARM ANIMALS DURING ADAPTATION TO HIGH AIR TEMPERATURE

2021 ◽  
Vol 11 (4) ◽  
pp. 989-994
Author(s):  
Lyudmila K. Buslovskaya ◽  
◽  
Alexey Yu. Kovtunenko
Keyword(s):  
Energy Metabolism ◽  
Air Temperature ◽  
Farm Animals

scholarly journals ACID BASE BALANCE OF FARM ANIMALS DURING ADAPTATION TO HIGH AIR TEMPERATURE

2021 ◽  
Vol 11 (4) ◽  
pp. 1013-1018
Author(s):  
Lyudmila K. Buslovskaya ◽  
◽  
Alexey Yu. Kovtunenko
Keyword(s):  
Air Temperature ◽  
Farm Animals ◽  
Acid Base Balance ◽  
Acid Base ◽  
Base Balance

EFFECTS OF LOW FLUCTUATING TEMPERATURES ON FARM ANIMALS: I. INFLUENCE OF AMBIENT AIR TEMPERATURE ON THE RESPIRATION RATE, HEART RATE, AND RECTAL TEMPERATURE OF LACTATING HOLSTEIN-FRIESIAN COWS

1958 ◽  
Vol 38 (1) ◽  
pp. 10-22 ◽  
Author(s):  
M. A. MacDonald ◽  
J. M. Bell
Keyword(s):  
Heart Rate ◽  
Respiration Rate ◽  
Air Temperature ◽  
Rectal Temperature ◽  
Ambient Air ◽  
Farm Animals ◽  
Measurement Unit ◽  
Ambient Air Temperature ◽  
Air Temperatures ◽  
Holstein Friesian

This report presents data on the effect of low fluctuating ambient air temperatures on the rectal temperature, heart rate, and respiration rate in lactating Holstein-Friesian cows.Daily minimum ambient air temperature (DMAAT) inside the uninsulated University of Saskatchewan loose-housing shed ranged from −5° F. to 38° F. As ambient temperature decreased, rectal temperature and heart rate increased, while respiration rate decreased. Levels of significance were 10, 9, and 1 per cent for regressions of rectal temperature, heart rate, and respiration rate, respectively, on DMAAT. Levels of significance were 7, 10, and 1 per cent for regressions of rectal temperature, heart rate, and respiration rate, respectively, on degree hours per day (d-h/day). Degree hours per day is a measurement unit developed by the authors and is based on time and difference in degrees from 50° F.Change in rectal temperature and heart rate were not significantly (P = >.05) correlated with either change in d-h/day or change in DMAAT. Change in respiration rate was significantly (P = <.02) and negatively correlated with change in d-h/day and significantly (P = <.06) and positively correlated with change in DMAAT.Heart rate, rectal temperature, and respiration rate were not significantly correlated with each other. However, change in respiration rate was positively correlated with change in rectal temperature (P = <.03).While the influence of low temperatures resulted in small changes in these physiological characteristics compared to those experienced elsewhere in high temperature zones, it cannot be concluded that lactating cows were entirely free of thermal stress at temperatures as low as 0° F.

Energy metabolism of farm animals

1993 ◽  
Vol 36 (2) ◽  
pp. 191-192
Author(s):  
H. de Boer
Keyword(s):  
Energy Metabolism ◽  
Farm Animals

Energy metabolism of farm animals

1984 ◽  
Vol 11 (2) ◽  
pp. 247-249 ◽  
Author(s):  
Kenneth Blaxter
Keyword(s):  
Energy Metabolism ◽  
Farm Animals

A simple climatic chamber for physiological work with poultry

1954 ◽  
Vol 44 (3) ◽  
pp. 361-368 ◽  
Author(s):  
J. C. D. Hutchinson
Keyword(s):  
Air Temperature ◽  
Ventilation System ◽  
Farm Animals ◽  
Climatic Chamber ◽  
Working Space ◽  
Refrigeration Equipment ◽  
Wide Range ◽  
And Performance ◽  
Radiant Temperature ◽  
Agricultural Areas

1. The construction and performance are described of a simple climatic chamber for work on poultry in hot climates. In addition, brief reference is made to an improved ventilation system and to refrigeration equipment fitted to chambers of later design.2. Air temperature and humidity may be controlled over a fairly wide range above that of the external air. Radiant temperature is maintained close to air temperature. The air movement averages about 20 ft./min. in the working space.3. The apparatus is suitable for accurate tests of heat tolerance lasting for a few hours, or for longterm experiments.4. It is suggested that the provision of climatic chambers for use with farm animals in underdeveloped agricultural areas is not a formidable problem.

Energy metabolism of farm animals. 1994

1997 ◽  
Vol 49 (1) ◽  
pp. 85-87
Author(s):  
J.F.D. Greenhalgh
Keyword(s):  
Energy Metabolism ◽  
Farm Animals
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