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פותח על ידי קלירמאש פתרונות בע"מ -
The ratio of naturally occurring 13C and 12C isotopes in sheep diet and faeces as a measurement for direct determination of lucerne hay and maize grain digestibilities in mixed diets
Year:
1985
Authors :
אמיר, שמואל
;
.
ברוקנטל, ישראל
;
.
הלוי, אמנון
;
.
נוימרק, חנן
;
.
קניט, חנה
;
.
שרודר, ג'רלד
;
.
Volume :
104
Co-Authors:
Bruckental, I., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Halevi, A., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Amir, S., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Neumark, H., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Kennit, H., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Schroeder, G., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Facilitators :
From page:
271
To page:
274
(
Total pages:
4
)
Abstract:
Two experiments were conducted with eight rams in a latin-square design of four treatments with different lucerne hay (LH): maize grain (MG) ratios: 100:0, 80:20, 50:50 and 20:80. In Expt 1 the amount of food offered was restricted to 1 kg/day. In Expt 2 the rams were offered 1.5 kg/day, which was about the maximum amount the animals in the 100 % LH treatment were able to consume. Animals were kept on each treatment for 4 weeks; during the final 8 days the faeces were collected and weighed for each animal and analysed for dry matter, organic matter (OM), crude fibre and δC [formula omitted] The values of δC in LH, MG and different faeces samples were used for direct determination of LH and MG digestibilities of mixed diets in the different treatments. The increase of MG in the ration and the decrease of LH improved the digestibility of total OM. The effect of MG was more pronounced at the low than at the high level of consumption. At the low level of intake, an increase in the amount of MG in the ration did not affect the digestibility of LH, and MG digestibility was close to the extrapolated value. At a food intake level 1.5 times that of Expt 1, the addition of grain to more than 50% of the ration caused a marked depression in digestibility of LH. Results of the δC method were discussed in comparison with calculated values of LH and MG digestibilities and with whole ration crude-fibre digestibility. © 1985, Cambridge University Press. All rights reserved.
Note:
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תוכן קשור
More details
DOI :
10.1017/S0021859600043914
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
20690
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:38
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Scientific Publication
The ratio of naturally occurring 13C and 12C isotopes in sheep diet and faeces as a measurement for direct determination of lucerne hay and maize grain digestibilities in mixed diets
104
Bruckental, I., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Halevi, A., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Amir, S., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Neumark, H., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Kennit, H., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
Schroeder, G., Agricultural Research Organization, Department of Dairy Cattle Nutrition, Institute of Animal Science, Volcani Center, P.O.B. 6, Bet Dagan 50250, Israel
The ratio of naturally occurring 13C and 12C isotopes in sheep diet and faeces as a measurement for direct determination of lucerne hay and maize grain digestibilities in mixed diets
Two experiments were conducted with eight rams in a latin-square design of four treatments with different lucerne hay (LH): maize grain (MG) ratios: 100:0, 80:20, 50:50 and 20:80. In Expt 1 the amount of food offered was restricted to 1 kg/day. In Expt 2 the rams were offered 1.5 kg/day, which was about the maximum amount the animals in the 100 % LH treatment were able to consume. Animals were kept on each treatment for 4 weeks; during the final 8 days the faeces were collected and weighed for each animal and analysed for dry matter, organic matter (OM), crude fibre and δC [formula omitted] The values of δC in LH, MG and different faeces samples were used for direct determination of LH and MG digestibilities of mixed diets in the different treatments. The increase of MG in the ration and the decrease of LH improved the digestibility of total OM. The effect of MG was more pronounced at the low than at the high level of consumption. At the low level of intake, an increase in the amount of MG in the ration did not affect the digestibility of LH, and MG digestibility was close to the extrapolated value. At a food intake level 1.5 times that of Expt 1, the addition of grain to more than 50% of the ration caused a marked depression in digestibility of LH. Results of the δC method were discussed in comparison with calculated values of LH and MG digestibilities and with whole ration crude-fibre digestibility. © 1985, Cambridge University Press. All rights reserved.
Scientific Publication
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