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164. | | SILVEIRA, C.S.; GIANNITTI, F.; MACIAS RIOSECO, M.; FRAGA, M.; ACOSTA, A.; FRAGA, N.; RIET-CORREA, F. Dermatitis ulcerativa crónica idiopatica en la región distal de los miembros en vacas de cria. In: Jornadas Uruguayas de Buiatría, 44., 2016, Paysandú, UY.; Gianneechini, E.; Elizondo, V. (Ed.).Paysandú: Centro Médico Veterinario de Paysandú/Sociedad Uruguaya de Buiatría, 2016. p.171-173Biblioteca(s): INIA La Estanzuela. |
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165. | | CHIAIA, H. L.J.; BALDI, F.; PEREIRA, A.S.; BANCHERO, G.; BRITO, G.; LA MANNA, A.; FERNANDEZ, E.; ACOSTA, Y.; MONTOSSI, F.; GASALLA, P.; MIGLIERINA, A.F.; NÚÑEZ, A. Desempenho, características da carcaça e qualidade da carne de novilhos cruzados Hereford-Angus alimentados com silagem de grão úmido de sorgo / Carcass and meat quality traits of crossbred Angus-Hereford calfs fed with Sorghum grain silage. Rev. Bras. Saúde Prod. Anim., Salvador, v.17, n.4, p.685-695, 2016. 2-s2.0-85007614136 Article history: Data de recebimento: 19/03/2015, Data de aprovação: 31/08/2016. Endereço para correspondência: chiaia1@yahoo.com.brBiblioteca(s): INIA Tacuarembó. |
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166. | | MARTÍNEZ, R.S.; ROMÁN, L.; ROMAN, L.; PLA, M.; MAZZINO, E.; PALLADINO, R.A.; LA MANNA, A. Efecto del uso de medidas de mitigación del estrés térmico sobre el consumo y comportamiento de vacas Holstein en lactancia avanzada. Comunicación. NA 2, Nutrición y Alimentación Animal. IN: REVISTA ARGENTINA DE PRODUCCIÓN ANIMAL, 2016, VOL. 36, ISS.1 (SUPL). 39 CONGRESO ARGENTINO DE PRODUCCIÓN ANIMAL. 19-21 OCTUBRE 2016. ACTAS. Buenos Aires (Argentina): AAPA. p. 190.Biblioteca(s): INIA Treinta y Tres. |
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169. | | MACEDO, F.; NAVAJAS, E. Heredabilidad genómica en caracteres de canal para la raza Hereford: resultados preliminares. GGM 20 - COMUNICACIONES LIBRES - GGM. GENÓMICA Y GENÉTICA MOLECULAR In: JOURNAL OF BASIC & APPLIED GENETICS, 2016, Vol.27, Iss. 1 (Supp.). XVI LATIN AMERICAN CONGRESS OF GENETICS, IV CONGRESS OF THE URUGUAYAN SOCIETY OF GENETICS, XLIX ANNUAL MEETING OF THE GENETICS SOCIETY OF CHILE, XLV ARGENTINE CONGRESS OF GENETICS, 9-12 October 2016. PROCEEDINGS. Montevideo (Uruguay): SAG, 2016. p.264Biblioteca(s): INIA Las Brujas. |
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177. | | BRANDA, A.; FEDERICI, M.; DUTRA, F.; ROMERO, A.; BRIANO, C.; DALLA RIZZA, M.; LLAMBÍ, S. Identificación de terneras Holando portadoras de BLAD y Citrulinemia en la región Este de Uruguay por PCR-RFLP y secuenciación. (Identification of Holstein heifer?s carriers BLAD and Citrullinemia in the eastern region of Uruguay by PCR-RFLP and sequencing). Veterinaria (Montevideo), 2016, v. 52, no. 202, p. 23-27. Recibido :11/5/2015. Aceptado: 28/8/2015Biblioteca(s): INIA Las Brujas. |
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180. | | BANCHERO, G.; CHALKLING, D.; MEDEROS, A. Relevamiento de problemas sanitarios y de manejo durante la terminación en bovinos en sistemas de confinamiento en Uruguay / Survey of health and management problems during finishing in cattle in confinement systems in Uruguay. Veterinaria (Montevideo), 2016, v. 52, no. 202, p. 4-13. Este trabajo se presentó como charlas en el siguientes lugares: ; Congreso AUPA, 3 de Diciembre de 2014, Montevideo; Facultad de Veterinaria, Libertad, San José, 2 de Junio de 2015.Biblioteca(s): INIA La Estanzuela; INIA Tacuarembó. |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha actual : |
24/05/2016 |
Actualizado : |
24/06/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
GOLDBERG, V.; RAVAGNOLO, O. |
Afiliación : |
VIRGINIA GOLDBERG BIANCHI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; OLGA RAVAGNOLO GUMILA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Description of the growth curve for Angus pasture-fed cows under extensive systems. |
Fecha de publicación : |
2015 |
Fuente / Imprenta : |
Journal of Animal Science, 2015, v.93, no. 9, p. 4285-4290. |
ISBN : |
10.2527/jas.2015-9208 |
Idioma : |
Inglés |
Notas : |
This work would not be possible without the support and data from the Uruguayan Aberdeen Angus Breed Society and the Rural Association of Uruguay. Appreciation is expressed to Drs. Ignacio Aguilar, Mario Lema, and Graciela Quintans from INIA for their valuables comments and suggestions.
Received April 15, 2015. / Accepted July 10, 2015 / Published September 8, 2015 |
Contenido : |
ABSTRACT.
Growth curves are useful for describing the sigmoid shape of an animal?s weight pattern over time. The purpose of the present study was to describe, for the first time, a complete growth curve for pasture-fed Angus cows in Uruguay and to analyze the major fixed effects that affect the estimation of mature cow weight (CW). A total of 22,743 records from 5,284 cows belonging to 73 herds were used in the statistical analysis. Five nonlinear models (Brody, Gompertz, Von Bertalanffy, logistic, and Richards) and a 3-knot cubic spline function were fitted to model weight change across age. Body weights were recorded at birth, weaning, and 18 mo and as an adult (at 2.3?3.6, 3.6?4.6, 4.6 to 5.6, 5.6 to 6.6, and 6.6 to 8.1 yr). After preliminary analyses, the fixed effects included in the model to estimate CW were BCS, herd, year and month of measurement, and age of dam. The herd and BCS were the major significant sources of variation. The Richards model had the lowest values for Akaike information criterion, Bayesian information criterion, and ?2 log likelihood, with the asymptotic weight being 542 kg. The spline function was the model that fitted the data most closely to the observed weights followed by the Richards function. The Richards model gave better predictions of weights from birth to maturity than the other 4 nonlinear models, because these functions were shown to over- or underestimate weights at different ages in this beef cattle data set. The predicted curve showed that cows reach mature CW after 5 yr of age, which is the age commonly assumed as adult weight in beef cattle. Results form this analysis allowed the estimation of CW and rate of maturing and to take knowledge of the shape of growth curve for Angus females in Uruguay under extensive conditions, helping breeders to take selection decisions. In this way, breeders can optimize the management and efficiency for each production system.
© 2015 American Society of Animal Science. All rights reserved. MenosABSTRACT.
Growth curves are useful for describing the sigmoid shape of an animal?s weight pattern over time. The purpose of the present study was to describe, for the first time, a complete growth curve for pasture-fed Angus cows in Uruguay and to analyze the major fixed effects that affect the estimation of mature cow weight (CW). A total of 22,743 records from 5,284 cows belonging to 73 herds were used in the statistical analysis. Five nonlinear models (Brody, Gompertz, Von Bertalanffy, logistic, and Richards) and a 3-knot cubic spline function were fitted to model weight change across age. Body weights were recorded at birth, weaning, and 18 mo and as an adult (at 2.3?3.6, 3.6?4.6, 4.6 to 5.6, 5.6 to 6.6, and 6.6 to 8.1 yr). After preliminary analyses, the fixed effects included in the model to estimate CW were BCS, herd, year and month of measurement, and age of dam. The herd and BCS were the major significant sources of variation. The Richards model had the lowest values for Akaike information criterion, Bayesian information criterion, and ?2 log likelihood, with the asymptotic weight being 542 kg. The spline function was the model that fitted the data most closely to the observed weights followed by the Richards function. The Richards model gave better predictions of weights from birth to maturity than the other 4 nonlinear models, because these functions were shown to over- or underestimate weights at different ages in this beef cattle data set. The predicted curve s... Presentar Todo |
Palabras claves : |
ABERDEEN ANGUS; BEEF CATTLE; GROWTH MODELS; MATURE COW WEIGHT. |
Thesagro : |
BOVINOS PARA CARNE; MODELOS DE CRECIMIENTO. |
Asunto categoría : |
-- |
Marc : |
LEADER 03004naa a2200217 a 4500 001 1054844 005 2021-06-24 008 2015 bl uuuu u00u1 u #d 100 1 $aGOLDBERG, V. 245 $aDescription of the growth curve for Angus pasture-fed cows under extensive systems.$h[electronic resource] 260 $c2015 500 $aThis work would not be possible without the support and data from the Uruguayan Aberdeen Angus Breed Society and the Rural Association of Uruguay. Appreciation is expressed to Drs. Ignacio Aguilar, Mario Lema, and Graciela Quintans from INIA for their valuables comments and suggestions. Received April 15, 2015. / Accepted July 10, 2015 / Published September 8, 2015 520 $aABSTRACT. Growth curves are useful for describing the sigmoid shape of an animal?s weight pattern over time. The purpose of the present study was to describe, for the first time, a complete growth curve for pasture-fed Angus cows in Uruguay and to analyze the major fixed effects that affect the estimation of mature cow weight (CW). A total of 22,743 records from 5,284 cows belonging to 73 herds were used in the statistical analysis. Five nonlinear models (Brody, Gompertz, Von Bertalanffy, logistic, and Richards) and a 3-knot cubic spline function were fitted to model weight change across age. Body weights were recorded at birth, weaning, and 18 mo and as an adult (at 2.3?3.6, 3.6?4.6, 4.6 to 5.6, 5.6 to 6.6, and 6.6 to 8.1 yr). After preliminary analyses, the fixed effects included in the model to estimate CW were BCS, herd, year and month of measurement, and age of dam. The herd and BCS were the major significant sources of variation. The Richards model had the lowest values for Akaike information criterion, Bayesian information criterion, and ?2 log likelihood, with the asymptotic weight being 542 kg. The spline function was the model that fitted the data most closely to the observed weights followed by the Richards function. The Richards model gave better predictions of weights from birth to maturity than the other 4 nonlinear models, because these functions were shown to over- or underestimate weights at different ages in this beef cattle data set. The predicted curve showed that cows reach mature CW after 5 yr of age, which is the age commonly assumed as adult weight in beef cattle. Results form this analysis allowed the estimation of CW and rate of maturing and to take knowledge of the shape of growth curve for Angus females in Uruguay under extensive conditions, helping breeders to take selection decisions. In this way, breeders can optimize the management and efficiency for each production system. © 2015 American Society of Animal Science. All rights reserved. 650 $aBOVINOS PARA CARNE 650 $aMODELOS DE CRECIMIENTO 653 $aABERDEEN ANGUS 653 $aBEEF CATTLE 653 $aGROWTH MODELS 653 $aMATURE COW WEIGHT 700 1 $aRAVAGNOLO, O. 773 $tJournal of Animal Science, 2015$gv.93, no. 9, p. 4285-4290.
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