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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha : |
10/03/2021 |
Actualizado : |
29/06/2022 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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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Registro original : |
INIA Tacuarembó (TBO) |
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
21/02/2014 |
Actualizado : |
12/02/2019 |
Tipo de producción científica : |
Documentos |
Autor : |
RISSO, D.; BERRETTA, E.J.; ZARZA, A. |
Afiliación : |
DIEGO FERNANDO RISSO RIET, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ELBIO JOAQUIN BERRETTA CARVALLO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Caracterización de productividad y persistencia de mejoramientos bajo pastoreo. |
Fecha de publicación : |
1994 |
Fuente / Imprenta : |
ln: INIA Tacuarembó. UTU. Escuela Agraria La Carolina. Jornada, 15 de setiembre, Escuela Agraria La Carolina, 1994. Mejoramiento de campo en Cristalino. Tacuarembó (Uruguay): INIA, UTU La Carolina, 1994. |
Páginas : |
p. 13-22 |
Serie : |
(INIA Serie Actividades de Difusión ; 29) |
Idioma : |
Español |
Contenido : |
El principal objetivo de este trabajo es cuantificar el efecto de la dotación y/o tipo de defoliación, sobre la producción y calidad de forraje estacional y anual, evolución de los componentes del tapiz, su estructura y persistencia, así como comportamiento animal individual y por hectárea, en dos mejoramientos de campo. |
Palabras claves : |
PASTURE. |
Thesagro : |
MANEJO DE PRADERAS; PASTOREO; TIPOS DE SUELOS. |
Asunto categoría : |
A50 Investigación agraria |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/11075/1/SAD-29p13-22.pdf
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Marc : |
LEADER 01090naa a2200217 a 4500 001 1020465 005 2019-02-12 008 1994 bl uuuu u00u1 u #d 100 1 $aRISSO, D. 245 $aCaracterización de productividad y persistencia de mejoramientos bajo pastoreo. 260 $c1994 300 $ap. 13-22 490 $a(INIA Serie Actividades de Difusión ; 29) 520 $aEl principal objetivo de este trabajo es cuantificar el efecto de la dotación y/o tipo de defoliación, sobre la producción y calidad de forraje estacional y anual, evolución de los componentes del tapiz, su estructura y persistencia, así como comportamiento animal individual y por hectárea, en dos mejoramientos de campo. 650 $aMANEJO DE PRADERAS 650 $aPASTOREO 650 $aTIPOS DE SUELOS 653 $aPASTURE 700 1 $aBERRETTA, E.J. 700 1 $aZARZA, A. 773 $tln: INIA Tacuarembó. UTU. Escuela Agraria La Carolina. Jornada, 15 de setiembre, Escuela Agraria La Carolina, 1994. Mejoramiento de campo en Cristalino. Tacuarembó (Uruguay): INIA, UTU La Carolina, 1994.
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