| dc.contributor.author |
Muller, E |
en |
| dc.contributor.author |
Mailander, Ch |
en |
| dc.contributor.author |
Rogdakis, E |
en |
| dc.contributor.author |
Fewson, D |
en |
| dc.date.accessioned |
2014-06-06T06:43:03Z |
|
| dc.date.available |
2014-06-06T06:43:03Z |
|
| dc.date.issued |
1996 |
en |
| dc.identifier.issn |
00445401 |
en |
| dc.identifier.uri |
http://62.217.125.90/xmlui/handle/123456789/980 |
|
| dc.relation.uri |
http://www.scopus.com/inward/record.url?eid=2-s2.0-22944456216&partnerID=40&md5=16e5b6b8dd6521c2c0acdcd29bd2debf |
en |
| dc.title |
Selection experiment in pigs to improve carcass traits by using biochemical traits or ultrasonic measurements - 2nd communication: Comparison of the selection lines in the last generation [Selektionsexperiment beim schwein zur verbesserung der schlachtkörperzusammensetzung durch zuchtwahl nach biochemischen parametern oder ultraschallmaßen - 2. Mitteitung: Vergleich der zuchtlinien in der letzten generation] |
en |
| heal.type |
journalArticle |
en |
| heal.publicationDate |
1996 |
en |
| heal.abstract |
In a selection experiment with pigs the effect of selection for NADPH-generating enzymes in opposite directions was investigated concerning the change of meat and fat content. After 9 generations the effectivity of selection was analysed. By means of a control line the symmetry of selection for enzyme activity could be calculated. A further line was selected for low backfat thickness with ultrasonic measurements on life animals. The main results can be summerized as follows: Selection for activity of NADPH-generating enzymes in opposite directions results in a significant differentiation of the selection lines in enzyme activity. A comparison of the results in the enzyme lines with the results in a control line give no hints for asymmetrical selection response for the NADPH-generating enzymes. Selection for enzyme activity leads also to a significant correlated selection response on carcass composition. The correlated selection response on carcass traits was asymmetrical. The correlated selection response by selecting for low enzyme activity was significantly higher compared with selection for high enzyme activity. Selection for enzyme activity has no significant selection response on traits for meat quality and stress resistance. The pigs of the control line had the best meat quality and the highest stress resistance. The animals of the low enzyme line had a reduced feed intake and a reduced daily gain, compared with the animals of the other lines. In the reproduction traits there were no differences between the enzyme lines. In tendency selection for low backfat thickness was more effective than selection for low enzyme activity, especially for traits of carcass composition. © Eugen Ulmer Verlag GmbH & Co. |
en |
| heal.journalName |
Zuchtungskunde |
en |
| dc.identifier.issue |
1 |
en |
| dc.identifier.volume |
68 |
en |
| dc.identifier.spage |
32 |
en |
| dc.identifier.epage |
47 |
en |