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פותח על ידי קלירמאש פתרונות בע"מ -
A dynamic model for the simulation of cattle herd production systems: Part 3-Reproductive performance of beef cows
Year:
1984
Source of publication :
Agricultural Systems
Authors :
לרר, רמי
;
.
קאן, חוה
;
.
Volume :
13
Co-Authors:
Kahn, H.E., Department of Forage Crops and Range Management, The Volcani Center, Bet Dagan, Israel
Lehrer, A.R., Department of Animal Reproduction, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
143
To page:
159
(
Total pages:
17
)
Abstract:
The TAMU model equations (Sanders & Cartwright, 1979) for the calculation of conception probability in beef cows were examined and modified in the light of data on individual cow reproductive performance and weight change. Additional factors, relating to the effects of suckling, sterility and age on the conception rate and its distribution, were identified and quantified on the basis of data obtained from a commercial herd in Israel. The modified and additional equations were incorporated in a simulation model and validated with data from another commercial herd, pertaining to two consecutive reproduction cycles. The results showed close correspondence between recorded and simulated conception distribution during the mating period and total conception rate, and sensitivity to the nutritional and other factors which affect reproductive performance. © 1984.
Note:
Related Files :
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תוכן קשור
More details
DOI :
10.1016/0308-521X(84)90068-4
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25336
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:14
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Scientific Publication
A dynamic model for the simulation of cattle herd production systems: Part 3-Reproductive performance of beef cows
13
Kahn, H.E., Department of Forage Crops and Range Management, The Volcani Center, Bet Dagan, Israel
Lehrer, A.R., Department of Animal Reproduction, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
A dynamic model for the simulation of cattle herd production systems: Part 3-Reproductive performance of beef cows
The TAMU model equations (Sanders & Cartwright, 1979) for the calculation of conception probability in beef cows were examined and modified in the light of data on individual cow reproductive performance and weight change. Additional factors, relating to the effects of suckling, sterility and age on the conception rate and its distribution, were identified and quantified on the basis of data obtained from a commercial herd in Israel. The modified and additional equations were incorporated in a simulation model and validated with data from another commercial herd, pertaining to two consecutive reproduction cycles. The results showed close correspondence between recorded and simulated conception distribution during the mating period and total conception rate, and sensitivity to the nutritional and other factors which affect reproductive performance. © 1984.
Scientific Publication
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