MARC details
| 000 -LEADER |
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| fixed length control field |
02990cab a2200313 a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
u183887 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
ENAL |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
230207s2022 ua ss b eng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
EAL |
| Transcribing agency |
EAL |
| 041 ## - LANGUAGE CODE |
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| 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 MUJAPP V1 No3 1 |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Genena, Shereen K. |
| 9 (RLIN) |
34576 |
| 240 10 - UNIFORM TITLE |
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| Uniform title |
Mansoura University journal of animal and poultry production, 2023 v.13 (9) |
| Medium |
[electronic resource]. |
| 245 10 - TITLE STATEMENT |
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| Title |
Genetic parameters of direct and maternal effects for birth weight of friesian calves under Egyptian farm conditions |
| Medium |
[electronic resource]. |
| 246 15 - VARYING FORM OF TITLE |
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| Title proper/short title |
المعالم الوراثية للتأثيرات المباشرة والأموية على وزن الولادة في عجول الفريزيان تحت ظروف المزرعة المصرية. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
p.119 - 124. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes reference. |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
A total of 4889 birth weight (BW) records on calves of 1609 Friesian cows in Sakha experimental farm were collected between 1975 and 2020 year. <br/>The analytical model included the fixed effects of the parity, calving year and season, age at first calving, gestation period length and calf sex. <br/>Variance components, heritabilities, direct maternal correlations and breeding values (BV) were estimated using VCE6 program. Genetic trends of <br/>calves BW were evaluated by regressing BV on years of calving using GLM process of SAS software. Results showed highly (P? 0.001) significant <br/>effects of all studied fixed effects on BW. Direct (h2a), sire (h2s), maternal (h2m) and total (h2t) heritabilities and direct maternal <br/>correlations (ram) estimates were 0.01, 0.10, 0.05, 0.09 and 0.01, respectively. Estimated BVs of calves, sires and dams ranged from -6.71 <br/>to 6.84, -6.04 to 4.38 and -7.29 to 8.86 kg, respectively. Range of BVs for dams was higher than for sires and calves, but the accuracy of <br/>calves BVs were higher than others. The genetic trend was not different from zero showing no indication of change in the genetic merit of BW <br/>in this farm during the period of study.Dam selection proved to be important for inducing high genetic progress in BW during the subsequent generation. <br/>Moreover, BV estimates of calves BW achieved higher accuracy ranging from 0.69 – 0.81% comparing to those for sires and dams by indirect selection. <br/>However, improvement in calves BW may also be achieved by practicing better management programs in this herd.<br/>Keywords: Calves, birth weight, direct and maternal effects, heritability, genetic trends.<br/> |
| 546 ## - LANGUAGE NOTE |
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| Language note |
Summary in Arabic. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Calves |
| 9 (RLIN) |
6909 |
| General subdivision |
Growth |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Calves |
| General subdivision |
Genetics |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Calves |
| General subdivision |
Physiology. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
El-Sawy, M. H. |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Shaarawy, A. M. |
| 9 (RLIN) |
31948 |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Mehany, A. A. |
| 9 (RLIN) |
25306 |
| 773 0# - HOST ITEM ENTRY |
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| Title |
Mansoura University Journal of Animal and Poultry Production. |
| Related parts |
2022.v.13(9) |
| International Standard Serial Number |
2090-3642 |
| Control subfield |
nnas |
| Record control number |
u183885 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
|---|
| Uniform Resource Identifier |
http://nile.enal.sci.eg/EALE/2022/MUJAPP/2213/3/71.pdf |
| Public note |
Full Text Article. |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Articles |
AR |
| Source of classification or shelving scheme |
lcc |