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פותח על ידי קלירמאש פתרונות בע"מ -
Dynamics of offensive gas-phase odorants in fresh and aged feces throughout the development of beef cattle.
Year:
2009
Source of publication :
Journal of Animal Science
Authors :
איתם, הראל
;
.
בייביקוב, רימה
;
.
ברוש, אריה
;
.
לאור, יעל
;
.
רביד, עוזי
;
.
שבתאי, אריאל
;
.
Volume :
87
Co-Authors:
Shabtay, A., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Ravid, U., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Brosh, A., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Baybikov, R., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Eitam, H., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Laor, Y., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Facilitators :
From page:
1835
To page:
1848
(
Total pages:
14
)
Abstract:
Livestock odors are largely caused by several groups of volatile organic compounds (VOC), including sulfur-containing compounds, VFA, and phenols and indoles. Throughout the growth stages of cattle in the nursery and feedlot, distinctly different diets are formulated to meet the changing requirements of the animal. Because diet composition and manure management are 2 major factors affecting odor emissions, it was assumed that changes in diet composition along the development of calves would affect VOC emissions from fresh and stored manure. In this study, the dynamics of gas-phase VOC in feces from 6 Holstein-Friesian bull calves were followed at 5 ages: 1 to 5 wk (stage I), 6 to 8 wk (stage II, before weaning), 9 to 14 wk (stage III, after weaning), and 15 to 36 wk (stages IV and V). The CP content of the formulated diet decreased from 23.0 to 13.9%. Samples of fresh feces were incubated under either aerobic or anaerobic conditions for 21 d. The VOC were analyzed from the feces headspace by solid-phase microextraction, followed by gas chromatography-mass spectrometry. Distinct changes in gas-phase VOC were observed in fresh and aged feces from calves at different ages. Semiquantitatively (based on comparative peak area counts), the following trends were observed: 1) S-containing compounds were the least dominant in fresh feces at the age of 2 wk (stage I), whereas VFA esters were the most dominant. 2) At the age of 7 wk (stage II), 1 wk before calves were weaned, feces seemed to be the most offensive, presumably because of the difficulty of synchronizing the requirements of the animal and the diet formulation during this stage of rapid development. 3) The VOC decreased during storage of feces under aerobic conditions but significantly increased at all 5 life stages during storage under anaerobic conditions. This study demonstrates that life stage and manure management affect odor emissions from beef fattening operations. Incorporation of the age and diet of calves in odor modeling could improve annoyance predictions.
Note:
Related Files :
aerobic metabolism
Animal
animal disease
Animals
cattle
chemistry
Gases
Growth, Development and Aging
Male
pH
עוד תגיות
תוכן קשור
More details
DOI :
10.2527/jas.2008-1357
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
32498
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:10
You may also be interested in
Scientific Publication
Dynamics of offensive gas-phase odorants in fresh and aged feces throughout the development of beef cattle.
87
Shabtay, A., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Ravid, U., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Brosh, A., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Baybikov, R., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Eitam, H., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Laor, Y., Institute of Animal Science, Water and Environmental Sciences, Agricultural Research Organization, Newe Ya'ar Research Center, Ramat Yishay, Israel 30095.
Dynamics of offensive gas-phase odorants in fresh and aged feces throughout the development of beef cattle.
Livestock odors are largely caused by several groups of volatile organic compounds (VOC), including sulfur-containing compounds, VFA, and phenols and indoles. Throughout the growth stages of cattle in the nursery and feedlot, distinctly different diets are formulated to meet the changing requirements of the animal. Because diet composition and manure management are 2 major factors affecting odor emissions, it was assumed that changes in diet composition along the development of calves would affect VOC emissions from fresh and stored manure. In this study, the dynamics of gas-phase VOC in feces from 6 Holstein-Friesian bull calves were followed at 5 ages: 1 to 5 wk (stage I), 6 to 8 wk (stage II, before weaning), 9 to 14 wk (stage III, after weaning), and 15 to 36 wk (stages IV and V). The CP content of the formulated diet decreased from 23.0 to 13.9%. Samples of fresh feces were incubated under either aerobic or anaerobic conditions for 21 d. The VOC were analyzed from the feces headspace by solid-phase microextraction, followed by gas chromatography-mass spectrometry. Distinct changes in gas-phase VOC were observed in fresh and aged feces from calves at different ages. Semiquantitatively (based on comparative peak area counts), the following trends were observed: 1) S-containing compounds were the least dominant in fresh feces at the age of 2 wk (stage I), whereas VFA esters were the most dominant. 2) At the age of 7 wk (stage II), 1 wk before calves were weaned, feces seemed to be the most offensive, presumably because of the difficulty of synchronizing the requirements of the animal and the diet formulation during this stage of rapid development. 3) The VOC decreased during storage of feces under aerobic conditions but significantly increased at all 5 life stages during storage under anaerobic conditions. This study demonstrates that life stage and manure management affect odor emissions from beef fattening operations. Incorporation of the age and diet of calves in odor modeling could improve annoyance predictions.
Scientific Publication
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