Genetic and environmental parameters for traits derived from the Brody growth curve and their relationships with weaning weight in Angus cattle
Direct and maternal genetic and environmental variances and covariances were estimated for weaning weight and growth and maturing traits derived from the Brody growth curve. Data consisted of field records of weight measurements of 3,044 Angus cows and 29,943 weaning weight records of both sexes. Gr...
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| Veröffentlicht in: | Journal of animal science 2000-06, Vol.78 (6), p.1436-1442 |
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| creator | Kaps, M Herring, W. O Lamberson, W. R |
| description | Direct and maternal genetic and environmental variances and covariances were estimated for weaning weight and growth and maturing traits derived from the Brody growth curve. Data consisted of field records of weight measurements of 3,044 Angus cows and 29,943 weaning weight records of both sexes. Growth traits included weights and growth rates at 365 and 550 d, respectively. Maturing traits included the age of animals when they reached 65% of mature weight, relative growth rates, and degrees of maturity at 365 and 550 d. Variance and covariance components were estimated by REML from a set of two-trait animal models including weaning weight paired with a growth or maturing trait. Weaning and cow contemporary groups were defined as fixed effects. Random effects for weaning weight included direct genetic, maternal genetic, and permanent environmental effects. For growth and maturing traits, a random direct genetic effect was included in the model. Direct heritability estimates for growth traits ranged from .46 to .52 and for maturing traits from .31 to .34. Direct genetic correlations between weaning weight and weights and growth rates at 365 and 550 d ranged from .56 to .70. Correlations of maternal weaning genetic effects with direct genetic effects on weights at 365 and 550 d were positive, but those with growth rates were negative. Between weaning weight and degrees of maturity at both 365 and 550 d, direct genetic correlation estimates were .55 and maternal genetic correlations estimates were -.05, respectively. Direct genetic correlations of weaning weight with relative growth rates and age at 65% of mature weight ranged from .04 to .06, and maternal-direct genetic correlation estimates ranged from -.50 to -.56, respectively. These estimates indicate that higher genetic capacity for milk production was related to higher body mass and degrees of maturity between 365 and 550 d of age but was negatively related to absolute and relative growth rates in that life stage. |
| doi_str_mv | 10.2527/2000.7861436x |
| format | Article |
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O ; Lamberson, W. R</creator><creatorcontrib>Kaps, M ; Herring, W. O ; Lamberson, W. R</creatorcontrib><description>Direct and maternal genetic and environmental variances and covariances were estimated for weaning weight and growth and maturing traits derived from the Brody growth curve. Data consisted of field records of weight measurements of 3,044 Angus cows and 29,943 weaning weight records of both sexes. Growth traits included weights and growth rates at 365 and 550 d, respectively. Maturing traits included the age of animals when they reached 65% of mature weight, relative growth rates, and degrees of maturity at 365 and 550 d. Variance and covariance components were estimated by REML from a set of two-trait animal models including weaning weight paired with a growth or maturing trait. Weaning and cow contemporary groups were defined as fixed effects. Random effects for weaning weight included direct genetic, maternal genetic, and permanent environmental effects. For growth and maturing traits, a random direct genetic effect was included in the model. Direct heritability estimates for growth traits ranged from .46 to .52 and for maturing traits from .31 to .34. Direct genetic correlations between weaning weight and weights and growth rates at 365 and 550 d ranged from .56 to .70. Correlations of maternal weaning genetic effects with direct genetic effects on weights at 365 and 550 d were positive, but those with growth rates were negative. Between weaning weight and degrees of maturity at both 365 and 550 d, direct genetic correlation estimates were .55 and maternal genetic correlations estimates were -.05, respectively. Direct genetic correlations of weaning weight with relative growth rates and age at 65% of mature weight ranged from .04 to .06, and maternal-direct genetic correlation estimates ranged from -.50 to -.56, respectively. These estimates indicate that higher genetic capacity for milk production was related to higher body mass and degrees of maturity between 365 and 550 d of age but was negatively related to absolute and relative growth rates in that life stage.</description><identifier>ISSN: 0021-8812</identifier><identifier>EISSN: 1525-3163</identifier><identifier>EISSN: 0021-8812</identifier><identifier>DOI: 10.2527/2000.7861436x</identifier><identifier>PMID: 10875624</identifier><language>eng</language><publisher>Savoy, IL: Am Soc Animal Sci</publisher><subject>Animal productions ; Animals ; Biological and medical sciences ; Body Weight ; Cattle ; Cattle - genetics ; Cattle - growth & development ; Environment ; Female ; Fundamental and applied biological sciences. Psychology ; Genetics ; Male ; Models, Biological ; Terrestrial animal productions ; Vertebrates ; Weaning</subject><ispartof>Journal of animal science, 2000-06, Vol.78 (6), p.1436-1442</ispartof><rights>2000 INIST-CNRS</rights><rights>Copyright American Society of Animal Science Jun 2000</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c376t-9c430e3d4b5a8a48c99a2d1cc53f5e3c2c3655e843f110c3a14adf927396d24b3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,27929,27930</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1449397$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/10875624$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Kaps, M</creatorcontrib><creatorcontrib>Herring, W. O</creatorcontrib><creatorcontrib>Lamberson, W. R</creatorcontrib><title>Genetic and environmental parameters for traits derived from the Brody growth curve and their relationships with weaning weight in Angus cattle</title><title>Journal of animal science</title><addtitle>J Anim Sci</addtitle><description>Direct and maternal genetic and environmental variances and covariances were estimated for weaning weight and growth and maturing traits derived from the Brody growth curve. Data consisted of field records of weight measurements of 3,044 Angus cows and 29,943 weaning weight records of both sexes. Growth traits included weights and growth rates at 365 and 550 d, respectively. Maturing traits included the age of animals when they reached 65% of mature weight, relative growth rates, and degrees of maturity at 365 and 550 d. Variance and covariance components were estimated by REML from a set of two-trait animal models including weaning weight paired with a growth or maturing trait. Weaning and cow contemporary groups were defined as fixed effects. Random effects for weaning weight included direct genetic, maternal genetic, and permanent environmental effects. For growth and maturing traits, a random direct genetic effect was included in the model. Direct heritability estimates for growth traits ranged from .46 to .52 and for maturing traits from .31 to .34. Direct genetic correlations between weaning weight and weights and growth rates at 365 and 550 d ranged from .56 to .70. Correlations of maternal weaning genetic effects with direct genetic effects on weights at 365 and 550 d were positive, but those with growth rates were negative. Between weaning weight and degrees of maturity at both 365 and 550 d, direct genetic correlation estimates were .55 and maternal genetic correlations estimates were -.05, respectively. Direct genetic correlations of weaning weight with relative growth rates and age at 65% of mature weight ranged from .04 to .06, and maternal-direct genetic correlation estimates ranged from -.50 to -.56, respectively. These estimates indicate that higher genetic capacity for milk production was related to higher body mass and degrees of maturity between 365 and 550 d of age but was negatively related to absolute and relative growth rates in that life stage.</description><subject>Animal productions</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Body Weight</subject><subject>Cattle</subject><subject>Cattle - genetics</subject><subject>Cattle - growth & development</subject><subject>Environment</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Genetics</subject><subject>Male</subject><subject>Models, Biological</subject><subject>Terrestrial animal productions</subject><subject>Vertebrates</subject><subject>Weaning</subject><issn>0021-8812</issn><issn>1525-3163</issn><issn>0021-8812</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNpd0c1u1DAUBeAIgehQWLJFFkLsUvybxMu2goJUiQ2srTvOzcSjxB5sZ4Y-Ba-MhxlUxOou_OnYvqeqXjN6xRVvP3BK6VXbNUyK5ueTasUUV7VgjXharSjlrO46xi-qFyltKWVcafW8umC0a1XD5ar6dYces7MEfE_Q710MfkafYSI7iDBjxpjIECLJEVxOpMfo9tiTIYaZ5BHJTQz9A9nEcMgjsUvc45-scuQiiThBdsGn0e0SObhCDgje-U2ZbjNm4jy59pslEQs5T_iyejbAlPDVeV5W3z99_Hb7ub7_evfl9vq-tqJtcq2tFBRFL9cKOpCd1Rp4z6xVYlAoLLeiUQo7KQbGqBXAJPSD5q3QTc_lWlxW70-5uxh-LJiymV2yOE3gMSzJtIxzpjQv8O1_cBuW6MvbDGdlta1WXUH1CdkYUoo4mF10M8QHw6g51mSONZm_NRX_5hy6rGfs_9GnXgp4dwaQLExDBG9denRSaqHbx1-MZZcHF9GkGaappDKzhdR2pjHHG8VvvjupLg</recordid><startdate>20000601</startdate><enddate>20000601</enddate><creator>Kaps, M</creator><creator>Herring, W. 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O</au><au>Lamberson, W. R</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Genetic and environmental parameters for traits derived from the Brody growth curve and their relationships with weaning weight in Angus cattle</atitle><jtitle>Journal of animal science</jtitle><addtitle>J Anim Sci</addtitle><date>2000-06-01</date><risdate>2000</risdate><volume>78</volume><issue>6</issue><spage>1436</spage><epage>1442</epage><pages>1436-1442</pages><issn>0021-8812</issn><eissn>1525-3163</eissn><eissn>0021-8812</eissn><abstract>Direct and maternal genetic and environmental variances and covariances were estimated for weaning weight and growth and maturing traits derived from the Brody growth curve. Data consisted of field records of weight measurements of 3,044 Angus cows and 29,943 weaning weight records of both sexes. Growth traits included weights and growth rates at 365 and 550 d, respectively. Maturing traits included the age of animals when they reached 65% of mature weight, relative growth rates, and degrees of maturity at 365 and 550 d. Variance and covariance components were estimated by REML from a set of two-trait animal models including weaning weight paired with a growth or maturing trait. Weaning and cow contemporary groups were defined as fixed effects. Random effects for weaning weight included direct genetic, maternal genetic, and permanent environmental effects. For growth and maturing traits, a random direct genetic effect was included in the model. Direct heritability estimates for growth traits ranged from .46 to .52 and for maturing traits from .31 to .34. Direct genetic correlations between weaning weight and weights and growth rates at 365 and 550 d ranged from .56 to .70. Correlations of maternal weaning genetic effects with direct genetic effects on weights at 365 and 550 d were positive, but those with growth rates were negative. Between weaning weight and degrees of maturity at both 365 and 550 d, direct genetic correlation estimates were .55 and maternal genetic correlations estimates were -.05, respectively. Direct genetic correlations of weaning weight with relative growth rates and age at 65% of mature weight ranged from .04 to .06, and maternal-direct genetic correlation estimates ranged from -.50 to -.56, respectively. These estimates indicate that higher genetic capacity for milk production was related to higher body mass and degrees of maturity between 365 and 550 d of age but was negatively related to absolute and relative growth rates in that life stage.</abstract><cop>Savoy, IL</cop><pub>Am Soc Animal Sci</pub><pmid>10875624</pmid><doi>10.2527/2000.7861436x</doi><tpages>7</tpages></addata></record> |
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| ispartof | Journal of animal science, 2000-06, Vol.78 (6), p.1436-1442 |
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| source | MEDLINE; Oxford University Press Journals All Titles (1996-Current) |
| subjects | Animal productions Animals Biological and medical sciences Body Weight Cattle Cattle - genetics Cattle - growth & development Environment Female Fundamental and applied biological sciences. Psychology Genetics Male Models, Biological Terrestrial animal productions Vertebrates Weaning |
| title | Genetic and environmental parameters for traits derived from the Brody growth curve and their relationships with weaning weight in Angus cattle |
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