The performance testing of boars I. Performance testing on Finnish experimental stations and genetic and environmental influences on test results
In 1965 performance testing was initiated in Finland for the selection of boars for A.I. use. In 1965—68 a total of 147 boars were tested on four local testing stations. The following average results were recorded: backfat thickness 21.6 mm (at a live weight of 88 kg), growth rate 699 g/day, feed ef...
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| Format: | Article |
| Language: | English |
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Scientific Agricultural Society of Finland
1971-01-01
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| Series: | Agricultural and Food Science |
| Online Access: | https://journal.fi/afs/article/view/71784 |
| _version_ | 1818274550245228544 |
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| author | Elsi Ettala |
| author_facet | Elsi Ettala |
| author_sort | Elsi Ettala |
| collection | DOAJ |
| description | In 1965 performance testing was initiated in Finland for the selection of boars for A.I. use. In 1965—68 a total of 147 boars were tested on four local testing stations. The following average results were recorded: backfat thickness 21.6 mm (at a live weight of 88 kg), growth rate 699 g/day, feed efficiency 2.69 scand. fu/kg growth and testing score (growth + fat) 99.6. The average testing score for boards selected for A.I. use (43 % of tested) was 99.7. Weakness of the legs was noted in 21 % of the boars. The varying initial weights of the male piglets influenced the growth rate very markedly (P < 0.001), and the effect of the initial age was significant with respect to feed efficiency (P < 0.01). The influence of the weight and age at end of test was highly significant with regard to thickness of fat (P < 0.001). Moreover, the weight at end of test affected the testing score significantly (P < 0.001), but the effect of age was eliminated by use of correction factors. The years as well as the testing stations influenced most of the results in a significant manner. The thickness of fat for the Yorkshire boars was significantly greater (P < 0.01) than for the Landrace boars and the former also had a significantly lower testing score. The effect of the genetic variation, influence of sires within breeds, was highly significant (P < 0.001) for all test results. It has thus proved possible to estimate the genetic quality of the boars. The different influences on the test results were analyzed by least squares procedures. |
| first_indexed | 2024-12-12T22:15:38Z |
| format | Article |
| id | doaj.art-7196bef5330e479c946ad0a291b9e1e5 |
| institution | Directory Open Access Journal |
| issn | 1459-6067 1795-1895 |
| language | English |
| last_indexed | 2024-12-12T22:15:38Z |
| publishDate | 1971-01-01 |
| publisher | Scientific Agricultural Society of Finland |
| record_format | Article |
| series | Agricultural and Food Science |
| spelling | doaj.art-7196bef5330e479c946ad0a291b9e1e52022-12-22T00:10:06ZengScientific Agricultural Society of FinlandAgricultural and Food Science1459-60671795-18951971-01-01431The performance testing of boars I. Performance testing on Finnish experimental stations and genetic and environmental influences on test resultsElsi Ettala0Department of Animal Breeding, University of HelsinkiIn 1965 performance testing was initiated in Finland for the selection of boars for A.I. use. In 1965—68 a total of 147 boars were tested on four local testing stations. The following average results were recorded: backfat thickness 21.6 mm (at a live weight of 88 kg), growth rate 699 g/day, feed efficiency 2.69 scand. fu/kg growth and testing score (growth + fat) 99.6. The average testing score for boards selected for A.I. use (43 % of tested) was 99.7. Weakness of the legs was noted in 21 % of the boars. The varying initial weights of the male piglets influenced the growth rate very markedly (P < 0.001), and the effect of the initial age was significant with respect to feed efficiency (P < 0.01). The influence of the weight and age at end of test was highly significant with regard to thickness of fat (P < 0.001). Moreover, the weight at end of test affected the testing score significantly (P < 0.001), but the effect of age was eliminated by use of correction factors. The years as well as the testing stations influenced most of the results in a significant manner. The thickness of fat for the Yorkshire boars was significantly greater (P < 0.01) than for the Landrace boars and the former also had a significantly lower testing score. The effect of the genetic variation, influence of sires within breeds, was highly significant (P < 0.001) for all test results. It has thus proved possible to estimate the genetic quality of the boars. The different influences on the test results were analyzed by least squares procedures.https://journal.fi/afs/article/view/71784 |
| spellingShingle | Elsi Ettala The performance testing of boars I. Performance testing on Finnish experimental stations and genetic and environmental influences on test results Agricultural and Food Science |
| title | The performance testing of boars I. Performance testing on Finnish experimental stations and genetic and environmental influences on test results |
| title_full | The performance testing of boars I. Performance testing on Finnish experimental stations and genetic and environmental influences on test results |
| title_fullStr | The performance testing of boars I. Performance testing on Finnish experimental stations and genetic and environmental influences on test results |
| title_full_unstemmed | The performance testing of boars I. Performance testing on Finnish experimental stations and genetic and environmental influences on test results |
| title_short | The performance testing of boars I. Performance testing on Finnish experimental stations and genetic and environmental influences on test results |
| title_sort | performance testing of boars i performance testing on finnish experimental stations and genetic and environmental influences on test results |
| url | https://journal.fi/afs/article/view/71784 |
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