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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
28/10/2020 |
Actualizado : |
11/03/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
MARTÍNEZ, G.; LÓPEZ, R.; MACEDO, F.; LEMA, O.M.; RAVAGNOLO, O. |
Afiliación : |
GUILLERMO MARTÍNEZ BOGGIO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Universidad de la República, Facultad de Veterinaria, Montevideo, Uruguay; Universidad de la República, Facultad de Veterinaria, Montevideo, Uruguay; OSCAR MARIO LEMA QUEIJO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; OLGA RAVAGNOLO GUMILA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Fixed environmental effects and connectedness of the genetic evaluation of the Limousin breed in Uruguay. [Fixed environmental effects and connectedness of the genetic evaluation of the Limousin breed in Uruguay]. |
Fecha de publicación : |
2020 |
Fuente / Imprenta : |
Agrociencia Uruguay, 2020, v. 24, n. 1, Epub 01-Jun-2020. Doi: http://dx.doi.org/10.31285/agro.24.141 |
ISSN : |
e-ISSN 2301-1548 |
DOI : |
10.31285/agro.24.141 |
Idioma : |
Inglés |
Notas : |
Article history: Received 17 Oct 2019 // Accepted 02 Apr 2020 // Published 15 May 2020.
Martinez-Boggio G, López R, Macedo F, Lema M, Ravagnolo O. Fixed environmental effects and connectedness of the genetic evaluation of the Limousin breed in Uruguay. Agrociencia Uruguay [Internet]. 2020 [cited dd mmm yyyy];24(1):141. Available from: http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/141.
Correspondence: Guillermo Martinez-Boggio, guillermo.martinezboggio@gmail.com |
Contenido : |
Genetic evaluations are an efficient tool to select sires, and for them it is necessary to have identification of environmental effects, genetic parameters, and acceptable degree of connectedness between herds. Evaluation of Limousin breed genetics has been developing since 2012. The objectives were to determine the most relevant fixed environmental effects of the characteristics in the genetic evaluation and to estimate the degree of connectedness between herds. The productive and genealogical records were extracted from the Limousin genetic evaluation database of the National Institute of Agricultural Research. Objective measurements were available for the characteristics birth weight (916 records), weaning (818), 18 months (438), ribeye area (435), and 12th-13th rib fat thickness (435) for 2012, 2013, 2014, 2015 and 2016 corresponding to four herds. The results showed that the fixed environmental effects considered presented a significant value (p<0.05), and that herds were connected to each other with average values of prediction error variance (pevd), and connectedness rating (cr) of 113.9 and 7.9, respectively. Concluding that the most relevant fixed environmental effects were year, sex, herd, age at weaning and age at 18 months, and that herds were connected with a low connectedness degree. |
Palabras claves : |
BOVINOS; ENVIRONMENTAL EFFECTS; GENETIC CONNECTEDNESS; LIMOUSIN; URUGUAY. |
Asunto categoría : |
L10 Genética y mejoramiento animal |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/14776/1/Agrociencia-2020-Martinez-Boggio-.pdf
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Marc : |
LEADER 02753naa a2200265 a 4500 001 1061432 005 2021-03-11 008 2020 bl uuuu u00u1 u #d 022 $ae-ISSN 2301-1548 024 7 $a10.31285/agro.24.141$2DOI 100 1 $aMARTÍNEZ, G. 245 $aFixed environmental effects and connectedness of the genetic evaluation of the Limousin breed in Uruguay. [Fixed environmental effects and connectedness of the genetic evaluation of the Limousin breed in Uruguay].$h[electronic resource] 260 $c2020 500 $aArticle history: Received 17 Oct 2019 // Accepted 02 Apr 2020 // Published 15 May 2020. Martinez-Boggio G, López R, Macedo F, Lema M, Ravagnolo O. Fixed environmental effects and connectedness of the genetic evaluation of the Limousin breed in Uruguay. Agrociencia Uruguay [Internet]. 2020 [cited dd mmm yyyy];24(1):141. Available from: http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/141. Correspondence: Guillermo Martinez-Boggio, guillermo.martinezboggio@gmail.com 520 $aGenetic evaluations are an efficient tool to select sires, and for them it is necessary to have identification of environmental effects, genetic parameters, and acceptable degree of connectedness between herds. Evaluation of Limousin breed genetics has been developing since 2012. The objectives were to determine the most relevant fixed environmental effects of the characteristics in the genetic evaluation and to estimate the degree of connectedness between herds. The productive and genealogical records were extracted from the Limousin genetic evaluation database of the National Institute of Agricultural Research. Objective measurements were available for the characteristics birth weight (916 records), weaning (818), 18 months (438), ribeye area (435), and 12th-13th rib fat thickness (435) for 2012, 2013, 2014, 2015 and 2016 corresponding to four herds. The results showed that the fixed environmental effects considered presented a significant value (p<0.05), and that herds were connected to each other with average values of prediction error variance (pevd), and connectedness rating (cr) of 113.9 and 7.9, respectively. Concluding that the most relevant fixed environmental effects were year, sex, herd, age at weaning and age at 18 months, and that herds were connected with a low connectedness degree. 653 $aBOVINOS 653 $aENVIRONMENTAL EFFECTS 653 $aGENETIC CONNECTEDNESS 653 $aLIMOUSIN 653 $aURUGUAY 700 1 $aLÓPEZ, R. 700 1 $aMACEDO, F. 700 1 $aLEMA, O.M. 700 1 $aRAVAGNOLO, O. 773 $tAgrociencia Uruguay, 2020$gv. 24, n. 1, Epub 01-Jun-2020. Doi: http://dx.doi.org/10.31285/agro.24.141
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Registro original : |
INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas. |
Fecha actual : |
21/02/2014 |
Actualizado : |
18/06/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
A - 1 |
Autor : |
PSZCZOLA, M.; AGUILAR, I.; MISZTAL, I. |
Afiliación : |
M. PSZCZOLA, Animal and Dairy Science Department, University of Georgia, United States; Animal Breeding and Genetics Group, Wageningen Institute of Animal Sciences, Wageningen University, Netherlands; IGNACIO AGUILAR GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; I. MISZTAL, Animal and Dairy Science Department, University of Georgia, United States. |
Título : |
Short communication: Trends for monthly changes in days open in Holsteins. |
Fecha de publicación : |
2009 |
Fuente / Imprenta : |
Journal of Dairy Science, 2009, 92 (9): 4689-4696. OPEN ACCESS. |
ISSN : |
0022-0302 |
DOI : |
10.3168/jds.2008-1985 |
Idioma : |
Inglés |
Notas : |
Article history: Received December 17, 2008. // Accepted May 5, 2009. |
Contenido : |
ABSTRACT.
A reaction norm approach was used to estimate trends for days open (DO) with a model that indirectly accounted for heat stress. Data included 3.4 million first-parity records of DO of US Holsteins. A fixed effect model included herd-year, month of calving within region (MOC), age class, and regression on 305-d milk yield. An index calculated from the standardized solutions to MOC derived from the fixed effect model was treated as a proxy for an index on heat stress (SI). The lowest index for any region was set to zero. The highest index was 1.00 for the Southeast, 0.56 for the Northeast, 0.54 for the Midwest, 0.33 for the Northwest, and 0.42 for the Southwest. In all regions except the Northwest, the highest DO and the corresponding highest indices were in March-April. Compared with the fixed model, the reaction norm model also included the effect of an animal and a random regression on the SI; the 2 animal solutions are subsequently referred to as an intercept and a slope. Genetic trends were calculated for cows and sires separately. For cows, the trend for the intercept was -0.1 d/yr, whereas the trend for the slope was 1 d/yr. For sires, the same trends were -0.3 and 1.5, respectively. Official proofs were used to characterize the 100 top and 100 bottom bulls with at least 50 daughters for the intercept and the slope. Compared with the top bulls, the bottom bulls for the intercept gave 56 kg more milk and their type performance index was higher by 212 points. For the slope, the same numbers were -435 kg and -242 points, respectively. Trends for seasonal changes of days open are unfavorable.
© American Dairy Science Association, 2009. MenosABSTRACT.
A reaction norm approach was used to estimate trends for days open (DO) with a model that indirectly accounted for heat stress. Data included 3.4 million first-parity records of DO of US Holsteins. A fixed effect model included herd-year, month of calving within region (MOC), age class, and regression on 305-d milk yield. An index calculated from the standardized solutions to MOC derived from the fixed effect model was treated as a proxy for an index on heat stress (SI). The lowest index for any region was set to zero. The highest index was 1.00 for the Southeast, 0.56 for the Northeast, 0.54 for the Midwest, 0.33 for the Northwest, and 0.42 for the Southwest. In all regions except the Northwest, the highest DO and the corresponding highest indices were in March-April. Compared with the fixed model, the reaction norm model also included the effect of an animal and a random regression on the SI; the 2 animal solutions are subsequently referred to as an intercept and a slope. Genetic trends were calculated for cows and sires separately. For cows, the trend for the intercept was -0.1 d/yr, whereas the trend for the slope was 1 d/yr. For sires, the same trends were -0.3 and 1.5, respectively. Official proofs were used to characterize the 100 top and 100 bottom bulls with at least 50 daughters for the intercept and the slope. Compared with the top bulls, the bottom bulls for the intercept gave 56 kg more milk and their type performance index was higher by 212 points. Fo... Presentar Todo |
Palabras claves : |
DAIRY CATTLE; DAYS OPEN; DÍAS ABIERTOS; ESTRÉS TÉRMICO; FERTILIDAD; FERTILITY; HEAT STRESS; REPRODUCCIÓN ANIMAL; VACAS LECHERAS; VACAS VACÍAS. |
Thesagro : |
GANADO LECHERO. |
Asunto categoría : |
-- L53 Fisiología Animal - Reproducción |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12195/1/Pszczola-M.-2009.-Jr.Dairy-Science.pdf
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Marc : |
LEADER 02577naa a2200313 a 4500 001 1012835 005 2019-06-18 008 2009 bl uuuu u00u1 u #d 022 $a0022-0302 024 7 $a10.3168/jds.2008-1985$2DOI 100 1 $aPSZCZOLA, M. 245 $aShort communication$bTrends for monthly changes in days open in Holsteins. 260 $c2009 500 $aArticle history: Received December 17, 2008. // Accepted May 5, 2009. 520 $aABSTRACT. A reaction norm approach was used to estimate trends for days open (DO) with a model that indirectly accounted for heat stress. Data included 3.4 million first-parity records of DO of US Holsteins. A fixed effect model included herd-year, month of calving within region (MOC), age class, and regression on 305-d milk yield. An index calculated from the standardized solutions to MOC derived from the fixed effect model was treated as a proxy for an index on heat stress (SI). The lowest index for any region was set to zero. The highest index was 1.00 for the Southeast, 0.56 for the Northeast, 0.54 for the Midwest, 0.33 for the Northwest, and 0.42 for the Southwest. In all regions except the Northwest, the highest DO and the corresponding highest indices were in March-April. Compared with the fixed model, the reaction norm model also included the effect of an animal and a random regression on the SI; the 2 animal solutions are subsequently referred to as an intercept and a slope. Genetic trends were calculated for cows and sires separately. For cows, the trend for the intercept was -0.1 d/yr, whereas the trend for the slope was 1 d/yr. For sires, the same trends were -0.3 and 1.5, respectively. Official proofs were used to characterize the 100 top and 100 bottom bulls with at least 50 daughters for the intercept and the slope. Compared with the top bulls, the bottom bulls for the intercept gave 56 kg more milk and their type performance index was higher by 212 points. For the slope, the same numbers were -435 kg and -242 points, respectively. Trends for seasonal changes of days open are unfavorable. © American Dairy Science Association, 2009. 650 $aGANADO LECHERO 653 $aDAIRY CATTLE 653 $aDAYS OPEN 653 $aDÍAS ABIERTOS 653 $aESTRÉS TÉRMICO 653 $aFERTILIDAD 653 $aFERTILITY 653 $aHEAT STRESS 653 $aREPRODUCCIÓN ANIMAL 653 $aVACAS LECHERAS 653 $aVACAS VACÍAS 700 1 $aAGUILAR, I. 700 1 $aMISZTAL, I. 773 $tJournal of Dairy Science, 2009, 92 (9): 4689-4696. OPEN ACCESS.
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