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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
21/02/2014 |
Actualizado : |
03/06/2021 |
Tipo de producción científica : |
Documentos |
Autor : |
LABANDERA, C.; CASTRO, M.; CONDON, F.; ALTIER, N.; STEWART, S. |
Afiliación : |
CARLOS MARCEL LABANDERA LABANDERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARINA CASTRO DERENYI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FEDERICO CONDON PRIANO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; NORA ADRIANA ALTIER MANZINI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SILVINA MARIA STEWART SONEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Programa Nacional de Evaluación de Cultivares: evaluación de cultivares de especies forrajeras. |
Fecha de publicación : |
1998 |
Fuente / Imprenta : |
ln: INIA La Estanzuela. Lechería y pasturas: jornada, 1998. La Estanzuela, Colonia (Uruguay): INIA, 1998. |
Páginas : |
p. 69-90. |
Serie : |
(INIA Serie Actividades de Difusión ; 163). |
Idioma : |
Español |
Thesagro : |
EVALUACION; PLANTAS FORRAJERAS; VARIEDADES. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/13092/1/SAD-163-1998.pdf;lecheria#page=70
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Marc : |
LEADER 00718naa a2200217 a 4500 001 1042450 005 2021-06-03 008 1998 bl uuuu u00u1 u #d 100 1 $aLABANDERA, C. 245 $aPrograma Nacional de Evaluación de Cultivares$bevaluación de cultivares de especies forrajeras.$h[electronic resource] 260 $c1998 300 $ap. 69-90. 490 $a(INIA Serie Actividades de Difusión ; 163). 650 $aEVALUACION 650 $aPLANTAS FORRAJERAS 650 $aVARIEDADES 700 1 $aCASTRO, M. 700 1 $aCONDON, F. 700 1 $aALTIER, N. 700 1 $aSTEWART, S. 773 $tln: INIA La Estanzuela. Lechería y pasturas: jornada, 1998. La Estanzuela, Colonia (Uruguay): INIA, 1998.
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INIA La Estanzuela (LE) |
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
10/03/2021 |
Actualizado : |
29/06/2022 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
FERREIRA, G.; CIAPPESONI, G.; CASTELLS, D.; AMARILHO-SILVEIRA, F.; NAVAJAS, E.; GIORELLO, D.; BANCHERO, G.; DE BARBIERI, I. |
Afiliación : |
GRACIALDA FERREIRA DE FERREIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CARLOS GABRIEL CIAPPESONI SCARONE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; D. CASTELLS, Secretariado Uruguayo de la Lana, Florida, Uruguay.; F. AMARILHO-SILVEIRA, Universidade Federal do Rio Grande do Sul, RS, Brasil.; ELLY ANA NAVAJAS VALENTINI, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DIEGO GERMAN GIORELLO LEITES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LUIS IGNACIO DE BARBIERI ETCHEBERRY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Feed conversion efficiency in sheep genetically selected for resistance to gastrointestinal nematodes |
Fecha de publicación : |
2021 |
Fuente / Imprenta : |
Animal Production Science, 2021, vol. 61(8), pages 754-760. OPEN ACCESS. doi: https://doi.org/10.1071/AN20121 |
DOI : |
10.1071/AN20121 |
Idioma : |
Inglés |
Notas : |
Article history: Submitted: 24 March 2020 Accepted: 12 February 2021 Published online: 10 March 2021. |
Contenido : |
Abstract: Context. It has been indicated that there might be an antagonism between selection for gastrointestinal nematode resistance and high productivity and feed conversion efficiency in ruminants. Aims. This study aimed to determine whether genetic selection for resistance to gastrointestinal nematodes would alter the feed intake and feed efficiency of sheep with or without an infection of Haemonchus contortus. Methods. Sixty-seven Corriedale lambs (357 14 days old) derived from flocks genetically selected to be resistant
(n = 29) or susceptible (n = 38) to gastrointestinal nematodes (GIN) were evaluated for individual dry-matter intake (DMI), feed conversion ratio (FCR) and residual feed intake (RFI). Considering bodyweight (BW), GIN line and sires, males were allotted to one of three outdoor pens and females to one of two, each pen being equipped with five automated feeding systems and two automatic weighing platforms to record individual feed intake and BW. Feed (lucerne haylage, crude protein 20.5%, metabolisable energy 9.2 MJ/kg DM) and water were offered ad libitum. The experiment was conducted in two periods. First, animals were maintained worm-free (14 days of acclimatisation and 44 days of records) and then, in Period 2 (42 days), animals were artificially infected with 6000 L3 of Haemonchus contortus. Worm egg counts were recorded on Days 9, 23, 27, 30, 42 post-infection. While DMI, FCR, average daily gain and BW were analysed using a generalised linear model including dams age, pen and GIN line as fixed effects, RFI was analysed including only GIN line. Key results. In both periods, GIN line did not have a significant (P > 0.05) effect on DMI, FCR, RFI, average daily gain or BW. Worm egg count was different (P < 0.05) on Day 23 post-infection (Period 2), being higher in susceptible line. Conclusions. The most important finding of this study is that breeding GIN-resistant animals would not have a negative effect on feed conversion efficiency when evaluated as FCR or RFI in 1-year old lambs fed ad libitum with a high-protein diet. Implications. Breeding for resistance to internal nematodes does not affect feed efficiency or productivity. MenosAbstract: Context. It has been indicated that there might be an antagonism between selection for gastrointestinal nematode resistance and high productivity and feed conversion efficiency in ruminants. Aims. This study aimed to determine whether genetic selection for resistance to gastrointestinal nematodes would alter the feed intake and feed efficiency of sheep with or without an infection of Haemonchus contortus. Methods. Sixty-seven Corriedale lambs (357 14 days old) derived from flocks genetically selected to be resistant
(n = 29) or susceptible (n = 38) to gastrointestinal nematodes (GIN) were evaluated for individual dry-matter intake (DMI), feed conversion ratio (FCR) and residual feed intake (RFI). Considering bodyweight (BW), GIN line and sires, males were allotted to one of three outdoor pens and females to one of two, each pen being equipped with five automated feeding systems and two automatic weighing platforms to record individual feed intake and BW. Feed (lucerne haylage, crude protein 20.5%, metabolisable energy 9.2 MJ/kg DM) and water were offered ad libitum. The experiment was conducted in two periods. First, animals were maintained worm-free (14 days of acclimatisation and 44 days of records) and then, in Period 2 (42 days), animals were artificially infected with 6000 L3 of Haemonchus contortus. Worm egg counts were recorded on Days 9, 23, 27, 30, 42 post-infection. While DMI, FCR, average daily gain and BW were analysed using a generalised linear model ... Presentar Todo |
Palabras claves : |
FEED CONVERSION EFFICIENCY; GASTROINTESTINAL NEMATODES; NEMATODES. |
Asunto categoría : |
L01 Ganadería |
URL : |
https://www.publish.csiro.au/an/pdf/AN20121
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Marc : |
LEADER 03132naa a2200265 a 4500 001 1061810 005 2022-06-29 008 2021 bl uuuu u00u1 u #d 024 7 $a10.1071/AN20121$2DOI 100 1 $aFERREIRA, G. 245 $aFeed conversion efficiency in sheep genetically selected for resistance to gastrointestinal nematodes$h[electronic resource] 260 $c2021 500 $aArticle history: Submitted: 24 March 2020 Accepted: 12 February 2021 Published online: 10 March 2021. 520 $aAbstract: Context. It has been indicated that there might be an antagonism between selection for gastrointestinal nematode resistance and high productivity and feed conversion efficiency in ruminants. Aims. This study aimed to determine whether genetic selection for resistance to gastrointestinal nematodes would alter the feed intake and feed efficiency of sheep with or without an infection of Haemonchus contortus. Methods. Sixty-seven Corriedale lambs (357 14 days old) derived from flocks genetically selected to be resistant (n = 29) or susceptible (n = 38) to gastrointestinal nematodes (GIN) were evaluated for individual dry-matter intake (DMI), feed conversion ratio (FCR) and residual feed intake (RFI). Considering bodyweight (BW), GIN line and sires, males were allotted to one of three outdoor pens and females to one of two, each pen being equipped with five automated feeding systems and two automatic weighing platforms to record individual feed intake and BW. Feed (lucerne haylage, crude protein 20.5%, metabolisable energy 9.2 MJ/kg DM) and water were offered ad libitum. The experiment was conducted in two periods. First, animals were maintained worm-free (14 days of acclimatisation and 44 days of records) and then, in Period 2 (42 days), animals were artificially infected with 6000 L3 of Haemonchus contortus. Worm egg counts were recorded on Days 9, 23, 27, 30, 42 post-infection. While DMI, FCR, average daily gain and BW were analysed using a generalised linear model including dams age, pen and GIN line as fixed effects, RFI was analysed including only GIN line. Key results. In both periods, GIN line did not have a significant (P > 0.05) effect on DMI, FCR, RFI, average daily gain or BW. Worm egg count was different (P < 0.05) on Day 23 post-infection (Period 2), being higher in susceptible line. Conclusions. The most important finding of this study is that breeding GIN-resistant animals would not have a negative effect on feed conversion efficiency when evaluated as FCR or RFI in 1-year old lambs fed ad libitum with a high-protein diet. Implications. Breeding for resistance to internal nematodes does not affect feed efficiency or productivity. 653 $aFEED CONVERSION EFFICIENCY 653 $aGASTROINTESTINAL NEMATODES 653 $aNEMATODES 700 1 $aCIAPPESONI, G. 700 1 $aCASTELLS, D. 700 1 $aAMARILHO-SILVEIRA, F. 700 1 $aNAVAJAS, E. 700 1 $aGIORELLO, D. 700 1 $aBANCHERO, G. 700 1 $aDE BARBIERI, I. 773 $tAnimal Production Science, 2021, vol. 61(8), pages 754-760. OPEN ACCESS. doi: https://doi.org/10.1071/AN20121
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