Estimation of Genetic Parameters for Milk Production and Reproductive Traits in a Herd of Holstein Friesian Cattle in Egypt / (Record no. 51909)
[ view plain ]
| 000 -LEADER | |
|---|---|
| fixed length control field | 03156cam a2200349 a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | EG-GiCUC |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250223031256.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 150810s2014 ua d f m 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EG-GiCUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GiCUC |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 049 ## - LOCAL HOLDINGS (OCLC) | |
| Holding library | Deposite |
| 097 ## - Thesis Degree | |
| Thesis Level | Ph.D |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | Cai01.07.03.Ph.D.2014.Na.E |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Naji Qasim Ali Mohammed Shaddad |
| 245 10 - TITLE STATEMENT | |
| Title | Estimation of Genetic Parameters for Milk Production and Reproductive Traits in a Herd of Holstein Friesian Cattle in Egypt / |
| Statement of responsibility, etc. | Naji Qasim Ali Mohammed Shaddad ; Supervised Ali Attia Nigm , Hossam El-Din Rushdi Ahmed , Usama Mohammed El-Saied |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | تقدير المعايير الوراثية لصفات إنتاج اللبن و الصفات التناسلية في قطيع من ماشية الهولشتين فريزيان في مصر |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Cairo : |
| Name of publisher, distributor, etc. | Naji Qasim Ali Mohammed Shaddad , |
| Date of publication, distribution, etc. | 2014 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 114 P. : |
| Other physical details | charts ; |
| Dimensions | 25cm |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (Ph.D.) - Cairo University - Faculty of Agriculture - Department of Animal Production |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Genetic parameters for some milk production and reproductive traits were estimated in a herd of Holstein Friesian (HF) cattle in Egypt. A total of 502 lactation records of 300 HF cows sired by 29 bulls from a herd belonging to Alexandria Copenhagen Company for Dairy and Meat Production, was used in the present study. Data were collected during 7 years (2005-2011) and analyzed using SAS, XLSTAT and WOMBAT. Means of total milk yield (TMY), 305 day milk yield (305-DMY), lactation period (LP), days open (DO) and calving interval (CI) were 10718 kg, 8805 kg, 397 day, 193 day and 472 day, respectively. Parity had no significant effects on all traits, except for 305-DMY (P<0.0001). Season of calving, also had no significant effects on all traits, except for LP (P<0.0025) and DO (P<0.021). Heritability estimates of TMY, 305-DMY, LP, DO and CI were 0.19, 0.25, 0.15, 0.11 and 0.11, respectively. The moderate estimate of heritability of 305-DMY indicated that improvement in this trait could be made through selection as well as better managemental practices. Repeatability of TMY, 305-DMY, LP, DO and CI were 0.40, 0.39, 0.34, 0.25 and 0.23, respectively. Positive genetic and phenotypic correlation coefficients were obtained among all traits and ranged from 0.003 to 0.99 and from 0.12 to 0.96, respectively. except for the phenotypic correlations between 305-DMY with DO and CI which were negative (-0.01 and -0.02, respectively). Results indicated possibility of genetic improvement of milk yield by selection for 305-DMY only, due to its higher estimate of heritability, compared to TMY, and also because of its reasonably high genetic correlation with TMY |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Additional physical form available note | Issued also as CD |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Holstein Friesian |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Milk yield |
| 653 #4 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Repreductive performance |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Ali Attia Nigm , |
| Relator term | |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Hossam El-Din Rushdi Ahmed , |
| Relator term | |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Usama Mohammed El-Saied , |
| Relator term | |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="http://172.23.153.220/th.pdf">http://172.23.153.220/th.pdf</a> |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Enas |
| Reviser | Cataloger |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) | |
| Cataloger | Nazla |
| Reviser | Revisor |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Source of classification or shelving scheme | Not for loan | Home library | Current library | Date acquired | Full call number | Barcode | Date last seen | Koha item type | Copy number |
|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 11.02.2024 | Cai01.07.03.Ph.D.2014.Na.E | 01010110066198000 | 22.09.2023 | Thesis | ||
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | مخـــزن الرســائل الجـــامعية - البدروم | 11.02.2024 | Cai01.07.03.Ph.D.2014.Na.E | 01020110066198000 | 22.09.2023 | CD - Rom | 66198.CD |