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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
31/03/2021 |
Actualizado : |
31/03/2021 |
Tipo de producción científica : |
Trabajos en Congresos/Conferencias |
Autor : |
LEGARRA, A.; CHRISTENSEN, O. F.; VITEZICA, Z. G.; AGUILAR, I.; MISZTAL, I. |
Afiliación : |
ANDRÉS LEGARRA, INRA, Toulouse, France; OLE FREDSLUND CHRISTENSEN, University of Aarhus, Foulum, Denmark,; ZULMA G. VITEZICA, INRA, Toulouse, France; IGNACIO AGUILAR GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; IGNACY MISZTAL, University of Georgia, Athens, Georgia, USA. |
Título : |
Across-breeds ancestral relationships and metafounders for genomic evaluation. |
Complemento del título : |
Volume Genetic Improvement Programs: Selection using molecular information, 075. |
Fecha de publicación : |
2014 |
Fuente / Imprenta : |
In: Proceedings of the World Congress on Genetics Applied to Livestock Production, 10., Vancouver, BC, Canada, August 17-22, 2014. p.075. |
Idioma : |
Inglés |
Notas : |
Acknowledgements: This project has been financed by X-Gen and GenSSeq actions from SelGen metaprogram (INRA). We are grateful to the genotoul bioinformatics platform Toulouse Midi-Pyrenees for providing computing resources. |
Contenido : |
ABSTRACT.
A theory to account for across-founder ancestral relationships is presented, which can consider relationships within and across populations. The theory assumes finite size of the ancestral population. Ancestral relationships can be represented as metafounders, pseudo-individuals that can be seen as pool of gametes and as extensions of random genetic groups. Simple rules exist for computation of relationships, inbreeding, and the inverse of the relationship matrix. Values of the Ancestral relationships can be inferred from marker relationships and pedigrees. Once they are computed, use in Single Step GBLUP is straightforward and compatibility of marker and pedigree information is automatic. |
Palabras claves : |
BLUP; Effective size; Genomic; Pedigree; Relationships. |
Asunto categoría : |
L10 Genética y mejoramiento animal |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/15443/1/Legarra-et-al.-2014.-WCGALP.pdf
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Marc : |
LEADER 01647nam a2200229 a 4500 001 1061919 005 2021-03-31 008 2014 bl uuuu u01u1 u #d 100 1 $aLEGARRA, A. 245 $aAcross-breeds ancestral relationships and metafounders for genomic evaluation.$h[electronic resource] 260 $aIn: Proceedings of the World Congress on Genetics Applied to Livestock Production, 10., Vancouver, BC, Canada, August 17-22, 2014. p.075.$c2014 500 $aAcknowledgements: This project has been financed by X-Gen and GenSSeq actions from SelGen metaprogram (INRA). We are grateful to the genotoul bioinformatics platform Toulouse Midi-Pyrenees for providing computing resources. 520 $aABSTRACT. A theory to account for across-founder ancestral relationships is presented, which can consider relationships within and across populations. The theory assumes finite size of the ancestral population. Ancestral relationships can be represented as metafounders, pseudo-individuals that can be seen as pool of gametes and as extensions of random genetic groups. Simple rules exist for computation of relationships, inbreeding, and the inverse of the relationship matrix. Values of the Ancestral relationships can be inferred from marker relationships and pedigrees. Once they are computed, use in Single Step GBLUP is straightforward and compatibility of marker and pedigree information is automatic. 653 $aBLUP 653 $aEffective size 653 $aGenomic 653 $aPedigree 653 $aRelationships 700 1 $aCHRISTENSEN, O. F. 700 1 $aVITEZICA, Z. G. 700 1 $aAGUILAR, I. 700 1 $aMISZTAL, I.
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha actual : |
31/10/2019 |
Actualizado : |
31/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
CAPELESSO, A.; KOZLOSKI, G.; MENDOZA, A.; PLA, M.; REPETTO, J.; CAJARVILLE, C. |
Afiliación : |
Departamento de Nutrición Animal, Universidad de la República, Facultad de Veterinaria, San José, Uruguay./Departamento de Zootecnia da Universidade Federal de Santa Maria, Rio Grande do Sul, Brasil.; Departamento de Zootecnia da Universidade Federal de Santa Maria, Rio Grande do Sul, 97105900, Brazil.; ALEJANDRO FRANCISCO MENDOZA AGUIAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARCELO PLA TEJERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSE LUIS REPETTO CAPELLO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay./ Departamento de Producción de Bovinos, Universidad de la República, Facultad de Veterinaria, San José, Uruguay.; CECILIA CAJARVILLE, Departamento de Nutrición Animal, Universidad de la República, Facultad de Veterinaria, San José, Uruguay. |
Título : |
Reducing milking frequency in early lactation improved the energy status but reduced milk yield during the whole lactation of primiparous Holstein cows consuming a total mixed ration and pasture. |
Fecha de publicación : |
2019 |
Fuente / Imprenta : |
Journal of Dairy Science, October 2019, Volume 102, Issue 10, Pages 8919-8930. |
DOI : |
10.3168/jds.2019-16629 |
Idioma : |
Inglés |
Notas : |
Article history: Received March 15, 2019. / Accepted June 21, 2019. |
Contenido : |
Abstract:
To investigate the immediate and long-term performance effects of milking frequency during early lactation of primiparous dairy cows consuming a total mixed ration and pasture, 20 Holstein cows were assigned in a randomized block design to either once-daily (1×) or twice-daily (2×) milking during the first 8 wk of lactation (treatment period). After the treatment period, all cows were milked 2× until wk 43 of lactation. Cows were fed a total mixed ration (approximately 15 kg of DM/cow per day) and allowed to graze an oat pasture (Avena sativa). Dry matter intake was 19.1 kg of DM/cow per day on average and was not affected by treatments. Milk yield was 40% lower in cows milked 1× during the treatment period, and a carryover effect existed until wk 21 of lactation, resulting in a final reduction of 15% of milk yield in the whole lactation. Milk lactose concentration decreased, whereas fat and protein concentrations increased for cows milked 1×. Mobilization of energy reserves during the treatment period occurred in both groups, but cows milked 1× showed greater body condition score and greater backfat thickness. In conclusion, milking 1× during the first 8 wk of lactation resulted in immediate and carryover negative effects on milk and milk solid yield without affecting feed intake, resulting in the improved energy status of primiparous dairy cows. |
Palabras claves : |
DAIRY COWS; GRAZING; ONCE-DAILY MILKING; ORDEÑE UNA VEZ AL DIA; VACA HOLSTEIN. |
Thesagro : |
LECHERÍA; VACAS LECHERAS. |
Asunto categoría : |
L01 Ganadería |
Marc : |
LEADER 02386naa a2200289 a 4500 001 1060374 005 2019-10-31 008 2019 bl uuuu u00u1 u #d 024 7 $a10.3168/jds.2019-16629$2DOI 100 1 $aCAPELESSO, A. 245 $aReducing milking frequency in early lactation improved the energy status but reduced milk yield during the whole lactation of primiparous Holstein cows consuming a total mixed ration and pasture.$h[electronic resource] 260 $c2019 500 $aArticle history: Received March 15, 2019. / Accepted June 21, 2019. 520 $aAbstract: To investigate the immediate and long-term performance effects of milking frequency during early lactation of primiparous dairy cows consuming a total mixed ration and pasture, 20 Holstein cows were assigned in a randomized block design to either once-daily (1×) or twice-daily (2×) milking during the first 8 wk of lactation (treatment period). After the treatment period, all cows were milked 2× until wk 43 of lactation. Cows were fed a total mixed ration (approximately 15 kg of DM/cow per day) and allowed to graze an oat pasture (Avena sativa). Dry matter intake was 19.1 kg of DM/cow per day on average and was not affected by treatments. Milk yield was 40% lower in cows milked 1× during the treatment period, and a carryover effect existed until wk 21 of lactation, resulting in a final reduction of 15% of milk yield in the whole lactation. Milk lactose concentration decreased, whereas fat and protein concentrations increased for cows milked 1×. Mobilization of energy reserves during the treatment period occurred in both groups, but cows milked 1× showed greater body condition score and greater backfat thickness. In conclusion, milking 1× during the first 8 wk of lactation resulted in immediate and carryover negative effects on milk and milk solid yield without affecting feed intake, resulting in the improved energy status of primiparous dairy cows. 650 $aLECHERÍA 650 $aVACAS LECHERAS 653 $aDAIRY COWS 653 $aGRAZING 653 $aONCE-DAILY MILKING 653 $aORDEÑE UNA VEZ AL DIA 653 $aVACA HOLSTEIN 700 1 $aKOZLOSKI, G. 700 1 $aMENDOZA, A. 700 1 $aPLA, M. 700 1 $aREPETTO, J. 700 1 $aCAJARVILLE, C. 773 $tJournal of Dairy Science, October 2019, Volume 102, Issue 10, Pages 8919-8930.
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