Simulation study of flock dynamics: application to intensive production system of Egyptian Barki sheep (Record no. 40070)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03275cab a2200265Ia 45 0 |
| 001 - CONTROL NUMBER | |
| control field | u184639 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | SIRSI |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 100902s2007 ua ss b eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EAL |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| Language code of summary or abstract | ara |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) | |
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) | ART MUJAS V32 No10 12 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Alsheikh, S. M. |
| 240 10 - UNIFORM TITLE | |
| Uniform title | Mansoura University journal of agricultural sciences, 2007 v. 32 (10) |
| Medium | [electronic resource]. |
| 245 10 - TITLE STATEMENT | |
| Title | Simulation study of flock dynamics: application to intensive production system of Egyptian Barki sheep |
| Medium | [electronic resource]. |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | دراسة محاكاة لديناميكية القطيع: تطبيقا لنظام الإنتاج المكثف فى لأغنام البرقي المصرية. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | p.8151-8160. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE | |
| Bibliography, etc. note | Includes reference. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | A dynamic flock simulator model (DFM) is presented. This model studies the complexity reproduction management systems of three lambings in two years system. Two types of data were used to, build the simulator IT1O!Iel.Ewe data (concerned 13725 records for 3120 BarkiewesfmlT('W70 to 2000)1I'om:Barki flock management database of the Maryuot Research Station. Desert Research Center. Ministry of Agricu~ure, Egypt. References. on three lambing in two years management practices. were implemented by researcher to ensure the generality of the model structure. The simulator model was based on some'set of specifications. The flock was divided into two batches. Data were analyzed to estimate the biological responses that are necessary for selling the model parameters. Also, input/output data were economicly analyzed at each phase corresponded to the characterization of the each batch flock, which is the set of all the ewes used for reproduction, replaced system. The result shows that, The batch production cycle (BPC) was the basic management entity for the dynamic flock model (DFM) structure. The relation between biological responses and ewe productive trajectory'was the bas,ic unit of the studied DFM performance and evolution. The average gross ou1put oflambs, wool, manure and culling animals per production cycle was 150450 LE, 1581 LE, 12635 LE and 53813 LE, respectively. This resu~ shows that lambs, wool, manure and culling animals contributed 69%,1%, 6% and 24% of total gross ou1put, respecttvely. It could be concluded that, this is a very simple DFM and clearly could be much improved nmore detailed information on the inputs relating to reproductive a!l~productive performances were available. ConsequenUy,the model could be exp8cted to produce very dffferent outputs for different mating seasons over a range ,of environments. In this model, a mating program was used with a ewe batch being joined at regUlar 4-monthly intervals. However, modification of the system to permit shorter or longer intervals between matings may be warranted and the model is capable of indicating the effect on output of such changes. Also, the DFM is promising economic rewording. |
| 546 ## - LANGUAGE NOTE | |
| Language note | Summary in Arabic. |
| 596 ## - | |
| -- | 1 |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Sheep |
| General subdivision | Research. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Computer simulation. |
| 773 0# - HOST ITEM ENTRY | |
| Title | Mansoura Unviersity Journal of Agricultural Sciences. |
| Related parts | 2007.v.32(10) |
| International Standard Serial Number | 1110-0346 |
| Control subfield | nnas |
| Record control number | u182197 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://nile.enal.sci.eg/EALE/2007/MUJAS/3207/10/8151.pdf">http://nile.enal.sci.eg/EALE/2007/MUJAS/3207/10/8151.pdf</a> |
| Public note | Full Text Article |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Articles |
| Source of classification or shelving scheme | Library of Congress Classification |
No items available.