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פותח על ידי קלירמאש פתרונות בע"מ -
Intake, rumen volume, retention time and digestibility of diets based on poultry litter and wheat straw in beef cows before and after calving
Year:
1993
Authors :
אהרוני, יואב
;
.
ברוש, אריה
;
.
הולצר, צבי
;
.
Volume :
121
Co-Authors:
Brosh, A., Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa Post 31999, Israel
Holzer, Z., Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa Post 31999, Israel
Aharon, Y., Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa Post 31999, Israel
Levy, D., Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa Post 31999, Israel
Facilitators :
From page:
103
To page:
109
(
Total pages:
7
)
Abstract:
Beef cows in the 14 weeks before calving and during the first 12 weeks after calving were fed one of three diets based on 15, 30 and 45 % broilers poultry litter (PL), 20 % maize grain (MG) and 65, 50 and 35% wheat straw (WS) on a DM basis, respectively. They were housed from June to November in individual open pens. Four weeks before and 9 weeks after calving, in vivo digestibility, fibre and fluid mean retention time (MRT) were measured. The intake of all diets before calving was low. Nine weeks after calving the intake of DM increased 2·1 times on the 15% PL diet, and 1·6 times on the two other diets. The in vivo digestibility of the 15% PL diets was lower than that of the two other diets before calving, and increased after calving, in spite of the doubling of its intake, while that of the 45% PL diet decreased. The mean retention time of fibre in the digestive tract was not affected by the increase in DM intake after calving on the 15 % PL diet and was shortened on the two other diets. It seems that the combination of the volume taken up by the gravid uterus and the bulkiness of the 15 % PL diets (65 % WS) reduced the intake and impaired the digestibility of that diet before calving. After calving, the fibre pool increased considerably and consequently both intake and digestibility were increased. © 1993, Cambridge University Press. All rights reserved.
Note:
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More details
DOI :
10.1017/S0021859600076851
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31879
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:06
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Scientific Publication
Intake, rumen volume, retention time and digestibility of diets based on poultry litter and wheat straw in beef cows before and after calving
121
Brosh, A., Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa Post 31999, Israel
Holzer, Z., Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa Post 31999, Israel
Aharon, Y., Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa Post 31999, Israel
Levy, D., Agricultural Research Organization, Newe Ya'ar Experiment Station, Haifa Post 31999, Israel
Intake, rumen volume, retention time and digestibility of diets based on poultry litter and wheat straw in beef cows before and after calving
Beef cows in the 14 weeks before calving and during the first 12 weeks after calving were fed one of three diets based on 15, 30 and 45 % broilers poultry litter (PL), 20 % maize grain (MG) and 65, 50 and 35% wheat straw (WS) on a DM basis, respectively. They were housed from June to November in individual open pens. Four weeks before and 9 weeks after calving, in vivo digestibility, fibre and fluid mean retention time (MRT) were measured. The intake of all diets before calving was low. Nine weeks after calving the intake of DM increased 2·1 times on the 15% PL diet, and 1·6 times on the two other diets. The in vivo digestibility of the 15% PL diets was lower than that of the two other diets before calving, and increased after calving, in spite of the doubling of its intake, while that of the 45% PL diet decreased. The mean retention time of fibre in the digestive tract was not affected by the increase in DM intake after calving on the 15 % PL diet and was shortened on the two other diets. It seems that the combination of the volume taken up by the gravid uterus and the bulkiness of the 15 % PL diets (65 % WS) reduced the intake and impaired the digestibility of that diet before calving. After calving, the fibre pool increased considerably and consequently both intake and digestibility were increased. © 1993, Cambridge University Press. All rights reserved.
Scientific Publication
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