נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Effect of two cooling frequencies on respiration rate in lactating dairy cows under hot and humid climate conditions
Year:
2019
Source of publication :
Annals of Animal Science
Authors :
הלחמי, אילן
;
.
לויט, הראל
;
.
Volume :
19
Co-Authors:

Pinto, S., Department of Engineering for Livestock Management, Leibniz Institute for Agricultural Engineering and Bioeconomy ATB, Max-Eyth-Allee 100, Potsdam, 14469, Germany, Institute of Animal Hygiene and Environmental Health, Free University Berlin, Robert-von-Ostertag 7-13, Berlin, 14163, Germany; Hoffmann, G., Department of Engineering for Livestock Management, Leibniz Institute for Agricultural Engineering and Bioeconomy ATB, Max-Eyth-Allee 100, Potsdam, 14469, Germany; Ammon, C., Department of Engineering for Livestock Management, Leibniz Institute for Agricultural Engineering and Bioeconomy ATB, Max-Eyth-Allee 100, Potsdam, 14469, Germany; Heuwieser, W., Clinic for Animal Reproduction, Free University Berlin, Königsweg 65, Berlin, 14163, Germany; Amon, T., Department of Engineering for Livestock Management, Leibniz Institute for Agricultural Engineering and Bioeconomy ATB, Max-Eyth-Allee 100, Potsdam, 14469, Germany, Institute of Animal Hygiene and Environmental Health, Free University Berlin, Robert-von-Ostertag 7-13, Berlin, 14163, Germany

Facilitators :
From page:
821
To page:
834
(
Total pages:
14
)
Abstract:

The aim of this study was to evaluate the effects of evaporative cooling at two different frequencies per day on the respiration rate (RR) of lactating dairy cows, considering cow-related factors. Twenty multiparous Israeli Holstein dairy cows housed in a naturally ventilated cowshed were divided randomly into two treatment groups. The cows of both groups were exposed to 3 or 8 cooling sessions per day (3xcool vs. 8xcool, respectively). The RR was observed hourly, with a maximum of 12 measurements per day. Body posture (standing vs. lying) was simultaneously documented. Milk yield was recorded daily. Coat color was determined from a digital photograph. The RR of standing and lying cows was lower in the 8xcool group (60.2 and 51.6 breaths per min (bpm), respectively) than in the 3xcool group (73.1 and 65.6 bpm, respectively). For each increment of five kilograms of milk produced, RR increased by one bpm, and the RR of cows in early DIM was 12.3 bpm higher than that of cows in late DIM. In conclusion, eight cooling sessions per day instead of three lead to a RR abatement in heat-stressed cows under hot conditions, and cow-related factors directly impact the RR during heat stress assessment. © 2019 Severino Pinto et al., published by Sciendo 2019.

Note:
Related Files :
animal welfare
cow-related factors
Evaporative cooling
Evaporative cooling systems
heat stress
Precision livestock farming
עוד תגיות
תוכן קשור
More details
DOI :
10.2478/aoas-2019-0026
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
40482
Last updated date:
02/03/2022 17:27
Creation date:
13/05/2019 13:01
Scientific Publication
Effect of two cooling frequencies on respiration rate in lactating dairy cows under hot and humid climate conditions
19

Pinto, S., Department of Engineering for Livestock Management, Leibniz Institute for Agricultural Engineering and Bioeconomy ATB, Max-Eyth-Allee 100, Potsdam, 14469, Germany, Institute of Animal Hygiene and Environmental Health, Free University Berlin, Robert-von-Ostertag 7-13, Berlin, 14163, Germany; Hoffmann, G., Department of Engineering for Livestock Management, Leibniz Institute for Agricultural Engineering and Bioeconomy ATB, Max-Eyth-Allee 100, Potsdam, 14469, Germany; Ammon, C., Department of Engineering for Livestock Management, Leibniz Institute for Agricultural Engineering and Bioeconomy ATB, Max-Eyth-Allee 100, Potsdam, 14469, Germany; Heuwieser, W., Clinic for Animal Reproduction, Free University Berlin, Königsweg 65, Berlin, 14163, Germany; Amon, T., Department of Engineering for Livestock Management, Leibniz Institute for Agricultural Engineering and Bioeconomy ATB, Max-Eyth-Allee 100, Potsdam, 14469, Germany, Institute of Animal Hygiene and Environmental Health, Free University Berlin, Robert-von-Ostertag 7-13, Berlin, 14163, Germany

Effect of two cooling frequencies on respiration rate in lactating dairy cows under hot and humid climate conditions

The aim of this study was to evaluate the effects of evaporative cooling at two different frequencies per day on the respiration rate (RR) of lactating dairy cows, considering cow-related factors. Twenty multiparous Israeli Holstein dairy cows housed in a naturally ventilated cowshed were divided randomly into two treatment groups. The cows of both groups were exposed to 3 or 8 cooling sessions per day (3xcool vs. 8xcool, respectively). The RR was observed hourly, with a maximum of 12 measurements per day. Body posture (standing vs. lying) was simultaneously documented. Milk yield was recorded daily. Coat color was determined from a digital photograph. The RR of standing and lying cows was lower in the 8xcool group (60.2 and 51.6 breaths per min (bpm), respectively) than in the 3xcool group (73.1 and 65.6 bpm, respectively). For each increment of five kilograms of milk produced, RR increased by one bpm, and the RR of cows in early DIM was 12.3 bpm higher than that of cows in late DIM. In conclusion, eight cooling sessions per day instead of three lead to a RR abatement in heat-stressed cows under hot conditions, and cow-related factors directly impact the RR during heat stress assessment. © 2019 Severino Pinto et al., published by Sciendo 2019.

Scientific Publication
You may also be interested in