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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
27/11/2020 |
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Actualizado : |
22/02/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
HERD, R.M.; ARTHUR, P.F.; HEGARTY, R.S.; BIRD-GARDINER, T.; DONOGHUE, K.A.; VELAZCO, J.I. |
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Afiliación : |
NSW Department of Primary Industries, Livestock Industry Centre. Environmental and Rural Science, University of New England, Australia.; NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute; Environmental and Rural Science, University of New England.; NSW Department of Primary Industries, Agricultural Research Centre. Australia; NSW Department of Primary Industries, Agricultural Research Centre. Australia; JOSÉ IGNACIO VELAZCO DE LOS REYES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Predicting metabolisable energy intake by free-ranging cattle using multiple short-term breath samples and applied to a pasture case-study. (Article in Press) |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Animal Production Science, 4 Nov. 2020, 61(4), p. 381-389 Doi: https://doi.org/10.1071/AN20162 |
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DOI : |
10.1071/AN20162 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 3 April 2020, accepted 11 October 2020, published online 4 November 2020. |
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Contenido : |
Context. Research into improving feed efficiency by ruminant animals grazing pastures has historically been restrained by an inability to measure feed intake by large numbers of individual animals. Recent advances in portable breath measurement technology could be useful for this purpose but methodologies need to be developed.
Aims. To evaluate predictive models for metabolisable energy intake (MEI) by free-ranging cattle using multiple short-term breath samples and then apply these to predict MEI by free-ranging cattle in a historic grazing experiment with cattle genetically divergent for residual feed intake (feed efficiency).
Methods. Predictive models for MEI were developed using bodyweight (BW) data, and carbon dioxide production rate (CPR) and methane production rate (MPR) from multiple short-term breath measurements, from an experiment with long-fed Angus steers on a grain-based diet, and an experiment with short-fed Angus heifers on a roughage diet.
Heat production was calculated using CPR and MPR. Energy retained (ER) in body tissue gain by steers was calculated from BW, ADG, initial and final subcutaneous fat depths, and for both groups using feeding-standards equations.
Key results. Metabolic mid-test BW (MBW) explained 49 and 47% of the variation in MEI in the steer and heifer experiment, respectively, and for the steers adding ADG and then subcutaneous fat gain resulted in the models accounting for 60 and then 65% of the variation in MEI. In the steer experiment, MBW with CPR explained 57% of the variation in MEI, and including MPR did not account for any additional variation. In the heifer experiment, MBW with CPR explained 50%, and with MPR accounted for 52% of the variation in MEI. Heat production plus ER explained 60, 35 and 85% of the variation in MEI in the steer and the heifer experiments, and in the pooled data from both experiments, respectively.
Conclusions. Multiple short-term breath measurements, together simple BW data, can be used to predict MEI by free-ranging cattle in studies in which animals do not have feed-intake or ADG recorded.
Implications. This methodology can be used for research into improving feed efficiency by farm animals grazing pastures. MenosContext. Research into improving feed efficiency by ruminant animals grazing pastures has historically been restrained by an inability to measure feed intake by large numbers of individual animals. Recent advances in portable breath measurement technology could be useful for this purpose but methodologies need to be developed.
Aims. To evaluate predictive models for metabolisable energy intake (MEI) by free-ranging cattle using multiple short-term breath samples and then apply these to predict MEI by free-ranging cattle in a historic grazing experiment with cattle genetically divergent for residual feed intake (feed efficiency).
Methods. Predictive models for MEI were developed using bodyweight (BW) data, and carbon dioxide production rate (CPR) and methane production rate (MPR) from multiple short-term breath measurements, from an experiment with long-fed Angus steers on a grain-based diet, and an experiment with short-fed Angus heifers on a roughage diet.
Heat production was calculated using CPR and MPR. Energy retained (ER) in body tissue gain by steers was calculated from BW, ADG, initial and final subcutaneous fat depths, and for both groups using feeding-standards equations.
Key results. Metabolic mid-test BW (MBW) explained 49 and 47% of the variation in MEI in the steer and heifer experiment, respectively, and for the steers adding ADG and then subcutaneous fat gain resulted in the models accounting for 60 and then 65% of the variation in MEI. In the steer experiment... Presentar Todo |
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Palabras claves : |
AVERAGE DAILY GAIN; CARBON DIOXIDE; FEED EFFICIENCY; FEED INTAKE; GRAZING; METABOLISABLE ENERGY INTAKE; METHANE; METHANE PRODUCTION RATE; OXYGEN; PASTURE. |
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Asunto categoría : |
L02 Alimentación animal |
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Marc : |
LEADER 03329naa a2200325 a 4500
001 1061522
005 2021-02-22
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1071/AN20162$2DOI
100 1 $aHERD, R.M.
245 $aPredicting metabolisable energy intake by free-ranging cattle using multiple short-term breath samples and applied to a pasture case-study. (Article in Press)$h[electronic resource]
260 $c2020
500 $aArticle history: Received 3 April 2020, accepted 11 October 2020, published online 4 November 2020.
520 $aContext. Research into improving feed efficiency by ruminant animals grazing pastures has historically been restrained by an inability to measure feed intake by large numbers of individual animals. Recent advances in portable breath measurement technology could be useful for this purpose but methodologies need to be developed. Aims. To evaluate predictive models for metabolisable energy intake (MEI) by free-ranging cattle using multiple short-term breath samples and then apply these to predict MEI by free-ranging cattle in a historic grazing experiment with cattle genetically divergent for residual feed intake (feed efficiency). Methods. Predictive models for MEI were developed using bodyweight (BW) data, and carbon dioxide production rate (CPR) and methane production rate (MPR) from multiple short-term breath measurements, from an experiment with long-fed Angus steers on a grain-based diet, and an experiment with short-fed Angus heifers on a roughage diet. Heat production was calculated using CPR and MPR. Energy retained (ER) in body tissue gain by steers was calculated from BW, ADG, initial and final subcutaneous fat depths, and for both groups using feeding-standards equations. Key results. Metabolic mid-test BW (MBW) explained 49 and 47% of the variation in MEI in the steer and heifer experiment, respectively, and for the steers adding ADG and then subcutaneous fat gain resulted in the models accounting for 60 and then 65% of the variation in MEI. In the steer experiment, MBW with CPR explained 57% of the variation in MEI, and including MPR did not account for any additional variation. In the heifer experiment, MBW with CPR explained 50%, and with MPR accounted for 52% of the variation in MEI. Heat production plus ER explained 60, 35 and 85% of the variation in MEI in the steer and the heifer experiments, and in the pooled data from both experiments, respectively. Conclusions. Multiple short-term breath measurements, together simple BW data, can be used to predict MEI by free-ranging cattle in studies in which animals do not have feed-intake or ADG recorded. Implications. This methodology can be used for research into improving feed efficiency by farm animals grazing pastures.
653 $aAVERAGE DAILY GAIN
653 $aCARBON DIOXIDE
653 $aFEED EFFICIENCY
653 $aFEED INTAKE
653 $aGRAZING
653 $aMETABOLISABLE ENERGY INTAKE
653 $aMETHANE
653 $aMETHANE PRODUCTION RATE
653 $aOXYGEN
653 $aPASTURE
700 1 $aARTHUR, P.F.
700 1 $aHEGARTY, R.S.
700 1 $aBIRD-GARDINER, T.
700 1 $aDONOGHUE, K.A.
700 1 $aVELAZCO, J.I.
773 $tAnimal Production Science, 4 Nov. 2020, 61(4), p. 381-389 Doi: https://doi.org/10.1071/AN20162
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Registro original : |
INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
13/10/2014 |
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Actualizado : |
04/05/2020 |
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Tipo de producción científica : |
Artículos en Revistas Agropecuarias |
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Autor : |
GOLDBERG, V.; CIAPPESONI, C.; DE BARBIERI, I.; RODRIGUEZ, A.; MONTOSSI, F. |
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Afiliación : |
VIRGINIA GOLDBERG BIANCHI, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; CARLOS GABRIEL CIAPPESONI SCARONE, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; LUIS IGNACIO DE BARBIERI ETCHEBERRY, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; ANALIA VERONICA RODRIGUEZ PEREYRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FABIO MARCELO MONTOSSI PORCHILE, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Factores no genéticos que afectan la resistencia a parásitos gastrointestinales en Merino en Uruguay. // Non genetic factors that affect resistance to gastrointestinal parasites in Merino in Uruguay. |
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Fecha de publicación : |
2011 |
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Fuente / Imprenta : |
Producción Ovina, 2011, v. 21, p. 1-11 |
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Idioma : |
Español |
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Notas : |
AGRADECIMIENTOS: A INIA por la concesión de una beca de inicio en la investigación a la Dra.Virginia Goldberg y por la financiación del presente trabajo.
Al personal de Glencoe por larecolección de las muestras y alLaboratorio de Sanidad de INIA Tacuarembó donde se llevó a cabo el procesamiento de las mismas. |
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Contenido : |
Las parasitosis gastrointestinales (PGI) constituye una de las principales limitantes sanitario-económicas para la producción ovina en el Uruguay.
Debido al incremento de la resistencia de los PGI a las drogas antihelmínticas, una estrategia alternativa para el control de los mismos, es la selección de animales genéticamente resistentes a los PGI; utilizándose como criterio, el recuento de huevos de nematodos por gramo de materia fecal (HPG). El objetivo del presente trabajo fue determinar qué factores de origen no genético afectan el recuento de HPG en ovinos Merino uruguayo. Para ello se analizaron dos mediciones pos-destete (LnHPG 1 y 2), realizadas en promedio a los 217 y 307 días respectivamente, en corderos Merino uruguayo pertenecientes a un núcleo de selección. Para LnHPG1, los factores que fueron significativos (p<0.05) fueron la condición corporal de la madre al parto, la edad de la madre, el peso del cordero al nacimiento (pn), la edad del cordero a la medición y grupo contemporáneo (GC: sexo-año-lote de manejo); mientras que para el LnHPG2 fueron el pn y GC. SUMMARY : Gastrointestinal nematodes (GIN) are one of the main sanitary and economic constraints for sheepproduction in Uruguay. Because of increased GIN resistance to anthelmintic drugs, one of thealternative control strategies is animal breeding; using faecal egg nematode count (FEC) as theselection criterion. The objective of the present study is to determine the non genetic factors that affectFEC in Merino breed in Uruguay. We analyzed two postweaning measures (LnFEC1 and LnFEC2),that were recorded at 217 and 307 days on average respectively, in Merino lambs from a selectionnucleus. For LnFEC1, the statistically significant factors (p<0.05) were: ewe body condition, motherage, lamb birth weight, lamb weight at measure and contemporary group (CG: year-sex-managementgroup), while for LnFEC2, were lamb birth weight and CG. MenosLas parasitosis gastrointestinales (PGI) constituye una de las principales limitantes sanitario-económicas para la producción ovina en el Uruguay.
Debido al incremento de la resistencia de los PGI a las drogas antihelmínticas, una estrategia alternativa para el control de los mismos, es la selección de animales genéticamente resistentes a los PGI; utilizándose como criterio, el recuento de huevos de nematodos por gramo de materia fecal (HPG). El objetivo del presente trabajo fue determinar qué factores de origen no genético afectan el recuento de HPG en ovinos Merino uruguayo. Para ello se analizaron dos mediciones pos-destete (LnHPG 1 y 2), realizadas en promedio a los 217 y 307 días respectivamente, en corderos Merino uruguayo pertenecientes a un núcleo de selección. Para LnHPG1, los factores que fueron significativos (p<0.05) fueron la condición corporal de la madre al parto, la edad de la madre, el peso del cordero al nacimiento (pn), la edad del cordero a la medición y grupo contemporáneo (GC: sexo-año-lote de manejo); mientras que para el LnHPG2 fueron el pn y GC. SUMMARY : Gastrointestinal nematodes (GIN) are one of the main sanitary and economic constraints for sheepproduction in Uruguay. Because of increased GIN resistance to anthelmintic drugs, one of thealternative control strategies is animal breeding; using faecal egg nematode count (FEC) as theselection criterion. The objective of the present study is to determine the non genetic factors that affectFEC in Meri... Presentar Todo |
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Palabras claves : |
BODY CONDITION; CONDICIÓN CORPORAL; EDAD DE LA MADRE; EWE AGE; FEC; HPG; LAMB BIRTH WEIGHT; NEMATODE RESISTANCE; PESO AL NACIMIENTO; RESISTENCIA A NEMATODOS. |
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Thesagro : |
OVINOS. |
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Asunto categoría : |
L01 Ganadería |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/3498/1/Produccion-Ovina-2011-v21P2.pdf
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Marc : |
LEADER 03189naa a2200313 a 4500
001 1051039
005 2020-05-04
008 2011 bl uuuu u00u1 u #d
100 1 $aGOLDBERG, V.
245 $aFactores no genéticos que afectan la resistencia a parásitos gastrointestinales en Merino en Uruguay. // Non genetic factors that affect resistance to gastrointestinal parasites in Merino in Uruguay.
260 $c2011
500 $aAGRADECIMIENTOS: A INIA por la concesión de una beca de inicio en la investigación a la Dra.Virginia Goldberg y por la financiación del presente trabajo. Al personal de Glencoe por larecolección de las muestras y alLaboratorio de Sanidad de INIA Tacuarembó donde se llevó a cabo el procesamiento de las mismas.
520 $aLas parasitosis gastrointestinales (PGI) constituye una de las principales limitantes sanitario-económicas para la producción ovina en el Uruguay. Debido al incremento de la resistencia de los PGI a las drogas antihelmínticas, una estrategia alternativa para el control de los mismos, es la selección de animales genéticamente resistentes a los PGI; utilizándose como criterio, el recuento de huevos de nematodos por gramo de materia fecal (HPG). El objetivo del presente trabajo fue determinar qué factores de origen no genético afectan el recuento de HPG en ovinos Merino uruguayo. Para ello se analizaron dos mediciones pos-destete (LnHPG 1 y 2), realizadas en promedio a los 217 y 307 días respectivamente, en corderos Merino uruguayo pertenecientes a un núcleo de selección. Para LnHPG1, los factores que fueron significativos (p<0.05) fueron la condición corporal de la madre al parto, la edad de la madre, el peso del cordero al nacimiento (pn), la edad del cordero a la medición y grupo contemporáneo (GC: sexo-año-lote de manejo); mientras que para el LnHPG2 fueron el pn y GC. SUMMARY : Gastrointestinal nematodes (GIN) are one of the main sanitary and economic constraints for sheepproduction in Uruguay. Because of increased GIN resistance to anthelmintic drugs, one of thealternative control strategies is animal breeding; using faecal egg nematode count (FEC) as theselection criterion. The objective of the present study is to determine the non genetic factors that affectFEC in Merino breed in Uruguay. We analyzed two postweaning measures (LnFEC1 and LnFEC2),that were recorded at 217 and 307 days on average respectively, in Merino lambs from a selectionnucleus. For LnFEC1, the statistically significant factors (p<0.05) were: ewe body condition, motherage, lamb birth weight, lamb weight at measure and contemporary group (CG: year-sex-managementgroup), while for LnFEC2, were lamb birth weight and CG.
650 $aOVINOS
653 $aBODY CONDITION
653 $aCONDICIÓN CORPORAL
653 $aEDAD DE LA MADRE
653 $aEWE AGE
653 $aFEC
653 $aHPG
653 $aLAMB BIRTH WEIGHT
653 $aNEMATODE RESISTANCE
653 $aPESO AL NACIMIENTO
653 $aRESISTENCIA A NEMATODOS
700 1 $aCIAPPESONI, C.
700 1 $aDE BARBIERI, I.
700 1 $aRODRIGUEZ, A.
700 1 $aMONTOSSI, F.
773 $tProducción Ovina, 2011$gv. 21, p. 1-11
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