Genetic Trend for Certain Traits in Pigs Using Different Selection Criteria

Vitomir Vidović, Dragomir Lukač, Ljuba Štrbac, Vladislav Višnjić, Desanka Punoš, Radomir Šević, Jovanka Krnjajić, Milanko Stupar

Abstract


The trial during 8 generations or 11 years of period has been done at 4 different breeds: Landrace and Yorkshire as dam line and Duroc and Pietrain as sire one. Included were 68 sires, 1.994 dams, 6.794 progeny and slaughtered 868 heads in total. There have no been selection differences for gain and age at slaughtered Y, L and D. Pietrain showed significantly less gain. It means more cost and less profit in case of P. The feeding line of gilts and sows were changed to previous one. It has significant influence to number of piglets at birth. It mean we have to, optimize, feeding regime and milk yield of sows. Phenotypic and genetic improvement was in average 0.25 piglets per generation. Genetic variation was similar from beginning to last generation of selection. Selection on meat content had positive trend. Selection efficiency were higher at D compare with P. Pietrain itself still have 3.4% more meat in carcass but much longer period of fattening. Intramuscular fat was much lover at P. This has negative effect on meat quality. Litter size showed positive effect. There are no significant differences between L and Y.


Keywords


age; genetic trends; litter size; meat content; pigs

Full Text:

PDF

Refbacks

  • There are currently no refbacks.


Copyright (c)


Scientific Papers Animal Science and Biotechnologies publish open access articles under the terms of the Creative Commons Attribution 4.0 Licence (read full legal code).


LUCRARI STIINTIFICE ZOOTEHNIE SI BIOTEHNOLOGII (SCIENTIFIC PAPERS ANIMAL SCIENCE AND BIOTECHNOLOGIES)

ISSN print 1841 - 9364
ISSN online 2344 - 4576
ISSN-L  1841 - 9364
(former ISSN 1221-5287, E-ISSN 1841-9364)

PUBLISHER: AGROPRINT Timisoara, Romania
PAPER ACCESS: Full text articles available for free
FREQUENCY: Semiannual
PUBLICATION LANGUAGE: English
_________________________________________________________________

Banat´s University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania" from Timisoara
Bioengineering Faculty of Animal Resources
300645, Timişoara, Calea Aradului 119, Romania

E-mail: spasb [at] animalsci-tm.ro
Phone: +40-256-277160, Fax.: +40-256-277110