A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle
The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of p...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Pereira, Rodrigo Junqueira [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: The journal of dairy research - London [u.a.] : Cambridge Univ. Press, 1929, 82(2015), 4, Seite 385 |
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| Übergeordnetes Werk: |
volume:82 ; year:2015 ; number:4 ; pages:385 |
| Links: |
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| DOI / URN: |
10.1017/S0022029915000448 |
|---|
| Katalog-ID: |
OLC1966369425 |
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| 520 | |a The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 0·08 and 0·21, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 0·50 and 0·27 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. | ||
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10.1017/S0022029915000448 doi PQ20160617 (DE-627)OLC1966369425 (DE-599)GBVOLC1966369425 (PRQ)p1631-af03f3c20111838897eae5f4f3926feee7615ab7c5ea34888c7df66b6437e6f50 (KEY)0057102420150000082000400385newwaytomeasuremilkyieldpersistencyageneticpointof DE-627 ger DE-627 rakwb eng 660 ZDB 58.34 bkl 83.60 bkl 83.67 bkl Pereira, Rodrigo Junqueira verfasserin aut A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 0·08 and 0·21, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 0·50 and 0·27 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. dairy cattle persistency Bayesian inference genetic parameters Ayres, Denise Rocha oth Faro, Lenira El oth Filho, Aníbal Eugênio Vercesi oth Verneque, Rui da Silva oth de Albuquerque, Lucia Galvão oth Enthalten in The journal of dairy research London [u.a.] : Cambridge Univ. Press, 1929 82(2015), 4, Seite 385 (DE-627)129605433 (DE-600)242089-2 (DE-576)015099679 0022-0299 nnns volume:82 year:2015 number:4 pages:385 http://dx.doi.org/10.1017/S0022029915000448 Volltext http://www.ncbi.nlm.nih.gov/pubmed/26242491 http://search.proquest.com/docview/1728063571 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_73 GBV_ILN_2010 GBV_ILN_4012 GBV_ILN_4219 58.34 AVZ 83.60 AVZ 83.67 AVZ AR 82 2015 4 385 |
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10.1017/S0022029915000448 doi PQ20160617 (DE-627)OLC1966369425 (DE-599)GBVOLC1966369425 (PRQ)p1631-af03f3c20111838897eae5f4f3926feee7615ab7c5ea34888c7df66b6437e6f50 (KEY)0057102420150000082000400385newwaytomeasuremilkyieldpersistencyageneticpointof DE-627 ger DE-627 rakwb eng 660 ZDB 58.34 bkl 83.60 bkl 83.67 bkl Pereira, Rodrigo Junqueira verfasserin aut A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 0·08 and 0·21, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 0·50 and 0·27 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. dairy cattle persistency Bayesian inference genetic parameters Ayres, Denise Rocha oth Faro, Lenira El oth Filho, Aníbal Eugênio Vercesi oth Verneque, Rui da Silva oth de Albuquerque, Lucia Galvão oth Enthalten in The journal of dairy research London [u.a.] : Cambridge Univ. Press, 1929 82(2015), 4, Seite 385 (DE-627)129605433 (DE-600)242089-2 (DE-576)015099679 0022-0299 nnns volume:82 year:2015 number:4 pages:385 http://dx.doi.org/10.1017/S0022029915000448 Volltext http://www.ncbi.nlm.nih.gov/pubmed/26242491 http://search.proquest.com/docview/1728063571 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_73 GBV_ILN_2010 GBV_ILN_4012 GBV_ILN_4219 58.34 AVZ 83.60 AVZ 83.67 AVZ AR 82 2015 4 385 |
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10.1017/S0022029915000448 doi PQ20160617 (DE-627)OLC1966369425 (DE-599)GBVOLC1966369425 (PRQ)p1631-af03f3c20111838897eae5f4f3926feee7615ab7c5ea34888c7df66b6437e6f50 (KEY)0057102420150000082000400385newwaytomeasuremilkyieldpersistencyageneticpointof DE-627 ger DE-627 rakwb eng 660 ZDB 58.34 bkl 83.60 bkl 83.67 bkl Pereira, Rodrigo Junqueira verfasserin aut A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 0·08 and 0·21, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 0·50 and 0·27 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. dairy cattle persistency Bayesian inference genetic parameters Ayres, Denise Rocha oth Faro, Lenira El oth Filho, Aníbal Eugênio Vercesi oth Verneque, Rui da Silva oth de Albuquerque, Lucia Galvão oth Enthalten in The journal of dairy research London [u.a.] : Cambridge Univ. Press, 1929 82(2015), 4, Seite 385 (DE-627)129605433 (DE-600)242089-2 (DE-576)015099679 0022-0299 nnns volume:82 year:2015 number:4 pages:385 http://dx.doi.org/10.1017/S0022029915000448 Volltext http://www.ncbi.nlm.nih.gov/pubmed/26242491 http://search.proquest.com/docview/1728063571 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_73 GBV_ILN_2010 GBV_ILN_4012 GBV_ILN_4219 58.34 AVZ 83.60 AVZ 83.67 AVZ AR 82 2015 4 385 |
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10.1017/S0022029915000448 doi PQ20160617 (DE-627)OLC1966369425 (DE-599)GBVOLC1966369425 (PRQ)p1631-af03f3c20111838897eae5f4f3926feee7615ab7c5ea34888c7df66b6437e6f50 (KEY)0057102420150000082000400385newwaytomeasuremilkyieldpersistencyageneticpointof DE-627 ger DE-627 rakwb eng 660 ZDB 58.34 bkl 83.60 bkl 83.67 bkl Pereira, Rodrigo Junqueira verfasserin aut A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 0·08 and 0·21, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 0·50 and 0·27 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. dairy cattle persistency Bayesian inference genetic parameters Ayres, Denise Rocha oth Faro, Lenira El oth Filho, Aníbal Eugênio Vercesi oth Verneque, Rui da Silva oth de Albuquerque, Lucia Galvão oth Enthalten in The journal of dairy research London [u.a.] : Cambridge Univ. Press, 1929 82(2015), 4, Seite 385 (DE-627)129605433 (DE-600)242089-2 (DE-576)015099679 0022-0299 nnns volume:82 year:2015 number:4 pages:385 http://dx.doi.org/10.1017/S0022029915000448 Volltext http://www.ncbi.nlm.nih.gov/pubmed/26242491 http://search.proquest.com/docview/1728063571 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_73 GBV_ILN_2010 GBV_ILN_4012 GBV_ILN_4219 58.34 AVZ 83.60 AVZ 83.67 AVZ AR 82 2015 4 385 |
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10.1017/S0022029915000448 doi PQ20160617 (DE-627)OLC1966369425 (DE-599)GBVOLC1966369425 (PRQ)p1631-af03f3c20111838897eae5f4f3926feee7615ab7c5ea34888c7df66b6437e6f50 (KEY)0057102420150000082000400385newwaytomeasuremilkyieldpersistencyageneticpointof DE-627 ger DE-627 rakwb eng 660 ZDB 58.34 bkl 83.60 bkl 83.67 bkl Pereira, Rodrigo Junqueira verfasserin aut A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 0·08 and 0·21, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 0·50 and 0·27 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. dairy cattle persistency Bayesian inference genetic parameters Ayres, Denise Rocha oth Faro, Lenira El oth Filho, Aníbal Eugênio Vercesi oth Verneque, Rui da Silva oth de Albuquerque, Lucia Galvão oth Enthalten in The journal of dairy research London [u.a.] : Cambridge Univ. Press, 1929 82(2015), 4, Seite 385 (DE-627)129605433 (DE-600)242089-2 (DE-576)015099679 0022-0299 nnns volume:82 year:2015 number:4 pages:385 http://dx.doi.org/10.1017/S0022029915000448 Volltext http://www.ncbi.nlm.nih.gov/pubmed/26242491 http://search.proquest.com/docview/1728063571 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_70 GBV_ILN_73 GBV_ILN_2010 GBV_ILN_4012 GBV_ILN_4219 58.34 AVZ 83.60 AVZ 83.67 AVZ AR 82 2015 4 385 |
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Pereira, Rodrigo Junqueira @@aut@@ Ayres, Denise Rocha @@oth@@ Faro, Lenira El @@oth@@ Filho, Aníbal Eugênio Vercesi @@oth@@ Verneque, Rui da Silva @@oth@@ de Albuquerque, Lucia Galvão @@oth@@ |
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A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle |
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The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 0·08 and 0·21, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 0·50 and 0·27 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. |
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The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 0·08 and 0·21, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 0·50 and 0·27 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. |
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The objective of this work was to estimate genetic parameters for a measure of persistency of milk yield and to evaluate its association with 305-d cumulative milk yield and lactation length. 12 346 records from 8202 dairy Gyr cows including lactations up to fifth calving were used. The measure of persistency was obtained from one of the parameters of a quadratic model that describes the cumulative yield across lactation as a function of days in milk. A three-trait multivariate analysis was done. Heritability and repeatability for persistency were 0·08 and 0·21, respectively. Deviance Information Criterion provided evidence that the additive genetic covariance between the measure of persistency studied and 305-d cumulative yield is zero. Genetic correlations between persistency and lactation length were 0·50 and 0·27 for first or all lactations, respectively. Milk yield persistency as measured in this study has low heritability. Selection for persistency can increase lactation length. The measure of milk yield persistency studied here is genetically independent of total milk yield and can be included in routine genetic evaluations of dairy cattle. |
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A new way to measure milk yield persistency: a genetic point of view with application to Gyr (Bos indicus) cattle |
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