Evaluasie van bestaande seleksiekriteria vir beeste in terme van totale kuddedoeltreffendheid
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie/South African Journal of Science and Technology
| Field | Value | |
| Title | Evaluasie van bestaande seleksiekriteria vir beeste in terme van totale kuddedoeltreffendheid Evaluation of existing selection criteria for cattle in terms of total herd efficiency | |
| Creator | Scholtz, M. M. Roux, C. Z. | |
| Description | Teling moet altyd gemik wees op die verbetering van totale kuddedoeltreffendheid. Seleksiekriteria is in die lig hiervan geëvalueer. By melkbeeste was daar 'n merkbare toename in produksiekenmerke gedurende die lO-jaarperiode wat bestudeer is. Gedurende hierdie periode het kalfinterval ook met 5% korter geword. Daar word aangedui dat hierdie veranderings moontlik gelei het tot 'n verbetering in totale kuddedoeltreffendheid. Dit wil dus voorkom asof prestasietoetsing en seleksiekriteria reg benut word deur die melkbeestelers. By vleisbeeste is geen verbetering in prestasie onder plaastoestande gevind nie. Breeding should always be aimed at the improvement of total herd efficiency. Selection criteria were evaluated from this viewpoint. In dairy cattle there was a marked increase in production traits in the 10 year period studied. During this period calving interval was also shortened by 5%. It was indicated that these changes probably led to an improvement in total herd efficiency. Thus, it seems that performance testing and selection criteria are utilized in the correct manner by dairy cattle breeders. In beef cattle no improvement was found in performance under farming conditions. | |
| Publisher | AOSIS | |
| Date | 1991-07-08 | |
| Identifier | 10.4102/satnt.v10i3.499 | |
| Source | Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 10, No 3 (1991); 106-111 Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 10, No 3 (1991); 106-111 2222-4173 0254-3486 | |
| Language | eng | |
| Relation |
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:
https://journals.satnt.aosis.co.za/index.php/satnt/article/view/499/893
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