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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
11/11/2019 |
Actualizado : |
11/11/2019 |
Tipo de producción científica : |
Capítulo en Libro Técnico-Científico |
Autor : |
LÓPEZ-MAZZ; BALDI, F.; QUINTANS, G.; KENYON, P.R.; CORREA, O.; REGUEIRO, M.; ÁLVAREZ-OXILEY, A.; BANCHERO, G. |
Afiliación : |
CARLOS LÓPEZ-MAZZ, Departamento de Producción Animal y Pasturas. Facultad de Agronomía, Montevideo, Uruguay.; FERNANDO BALDI, Facultad de Ciencias Agrarias e Veternárias, Jaboticabal, Sao Paulo, Brazil.; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; P.R. KENYON, Sheep Research Centre, Institute of Veterinary and Biomedical Sciences. Massey University, Palmerston, North, New Zealand.; O. CORREA, Departamento de Parasitología Veterinaria, Facultad de Veterinaria, Montevideo, Uruguay.; M. REGUEIRO, Departamento de Producción Animal y Pasturas. Facultad de Agronomía, Montevideo, Uruguay.; A. ÁLVAREZ-OXILEY, Departamento de Producción Animal y Pasturas. Facultad de Agronomía, Montevideo, Uruguay.; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Efecto sobre el comportamiento productivo, reproductivo y la respuesta al desafío parasitario en corderas cuyas madres fueron esquiladas a los 50 días de gestación. |
Fecha de publicación : |
2019 |
Fuente / Imprenta : |
In: QUINTANS, G.; IEWDIUKOW, M. (Ed.). Primer Seminario Técnico de Programación Fetal. Montevideo (UY): INIA, 2019. p. 99-109. |
Serie : |
(INIA Serie Técnica; 252) |
ISSN : |
1688-9266 |
Idioma : |
Español |
Contenido : |
ABSTRACT
This study evaluated the effect of shearing ewes at 50 day of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the
female offspring from weaning (104 d) to 18 months old. Fifty-seven Polwarth female lambs were used, 22 single (S) and 35 twin (T) born to ewes either shorn at 50 days of pregnancy (PS, n = 23) or shorn at 62 days post-partum (U, control, n = 34) resulting in four sub-groups: SPS: single female lambs born to ewes shorn at 50 days of pregnancy (n = 8), SU: single female lambs born to ewes shorn postpartum (n = 14), TPS: twin females lambs born to ewes shorn at 50 days of pregnancy (n = 15) or TU: twin female lambs born to ewes shorn postpartum (n = 20). All progeny was managed together under improved pasture with a minimum forage allowance of 6% live weight on dry matter basis. Body weight, body condition score (BCS) and fecal eggs count was recorded every 14 d from weaning to 18 months of
age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate (545 ± 1.0 d old) was recorded. Prepartum shearing did not affect the age at puberty or the ovulation rate, but those female lambs born as singles were more precocious (P = 0.03) and heavier (P = 0.02) at puberty than twin born female lambs. Both the average value of parasite egg count (P = 0.07) and the Famacha index (P = 0.02) for the entire study period were lower in female lambs born to prepartum shorn ewes than those born to postpartum shorn ewes. In conclusion, shearing at 50 days of gestation did not affect the growth or the reproductive behavior of female offspring. However, female lambs born from ewe shorn during gestation showed a better response to the parasite challenge, but further research is required to confirm this. MenosABSTRACT
This study evaluated the effect of shearing ewes at 50 day of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the
female offspring from weaning (104 d) to 18 months old. Fifty-seven Polwarth female lambs were used, 22 single (S) and 35 twin (T) born to ewes either shorn at 50 days of pregnancy (PS, n = 23) or shorn at 62 days post-partum (U, control, n = 34) resulting in four sub-groups: SPS: single female lambs born to ewes shorn at 50 days of pregnancy (n = 8), SU: single female lambs born to ewes shorn postpartum (n = 14), TPS: twin females lambs born to ewes shorn at 50 days of pregnancy (n = 15) or TU: twin female lambs born to ewes shorn postpartum (n = 20). All progeny was managed together under improved pasture with a minimum forage allowance of 6% live weight on dry matter basis. Body weight, body condition score (BCS) and fecal eggs count was recorded every 14 d from weaning to 18 months of
age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate (545 ± 1.0 d old) was recorded. Prepartum shearing did not affect the age at puberty or the ovulation rate, but those female lambs born as singles were more precocious (P = 0.03) and heavier (P = 0.02) at puberty than twin born female lambs. Both the average value of parasite egg count (P = 0.07) and the Famacha index (P = 0.02) for the entire study ... Presentar Todo |
Palabras claves : |
CORDERAS; CRECIMIENTO; ESQUILA TEMPRANO; INMUNIDAD; REPRODUCCIÓN. |
Asunto categoría : |
L53 Fisiología Animal - Reproducción |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/13790/1/St-252-p-99-109-Lopez-Mazz.pdf
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Marc : |
LEADER 02845naa a2200289 a 4500 001 1060407 005 2019-11-11 008 2019 bl uuuu u00u1 u #d 022 $a1688-9266 100 1 $aLÓPEZ-MAZZ 245 $aEfecto sobre el comportamiento productivo, reproductivo y la respuesta al desafío parasitario en corderas cuyas madres fueron esquiladas a los 50 días de gestación.$h[electronic resource] 260 $c2019 490 $a(INIA Serie Técnica; 252) 520 $aABSTRACT This study evaluated the effect of shearing ewes at 50 day of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the female offspring from weaning (104 d) to 18 months old. Fifty-seven Polwarth female lambs were used, 22 single (S) and 35 twin (T) born to ewes either shorn at 50 days of pregnancy (PS, n = 23) or shorn at 62 days post-partum (U, control, n = 34) resulting in four sub-groups: SPS: single female lambs born to ewes shorn at 50 days of pregnancy (n = 8), SU: single female lambs born to ewes shorn postpartum (n = 14), TPS: twin females lambs born to ewes shorn at 50 days of pregnancy (n = 15) or TU: twin female lambs born to ewes shorn postpartum (n = 20). All progeny was managed together under improved pasture with a minimum forage allowance of 6% live weight on dry matter basis. Body weight, body condition score (BCS) and fecal eggs count was recorded every 14 d from weaning to 18 months of age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate (545 ± 1.0 d old) was recorded. Prepartum shearing did not affect the age at puberty or the ovulation rate, but those female lambs born as singles were more precocious (P = 0.03) and heavier (P = 0.02) at puberty than twin born female lambs. Both the average value of parasite egg count (P = 0.07) and the Famacha index (P = 0.02) for the entire study period were lower in female lambs born to prepartum shorn ewes than those born to postpartum shorn ewes. In conclusion, shearing at 50 days of gestation did not affect the growth or the reproductive behavior of female offspring. However, female lambs born from ewe shorn during gestation showed a better response to the parasite challenge, but further research is required to confirm this. 653 $aCORDERAS 653 $aCRECIMIENTO 653 $aESQUILA TEMPRANO 653 $aINMUNIDAD 653 $aREPRODUCCIÓN 700 1 $aBALDI, F. 700 1 $aQUINTANS, G. 700 1 $aKENYON, P.R. 700 1 $aCORREA, O. 700 1 $aREGUEIRO, M. 700 1 $aÁLVAREZ-OXILEY, A. 700 1 $aBANCHERO, G. 773 $tIn: QUINTANS, G.; IEWDIUKOW, M. (Ed.). Primer Seminario Técnico de Programación Fetal. Montevideo (UY): INIA, 2019. p. 99-109.
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INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
Fecha actual : |
12/10/2016 |
Actualizado : |
13/10/2016 |
Autor : |
BERRETTA, E.J.; PITTALUGA, O.; BRITO, G.; PIGURINA, G.; RISSO, D. |
Afiliación : |
ELBIO JOAQUIN BERRETTA CARVALLO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; OSCAR ALBERTO PITTALUGA GONZALEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GUSTAVO WALTER BRITO DIAZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GUILLERMO PIGURINA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DIEGO FERNANDO RISSO RIET, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Recría de reemplazos en baslto. |
Fecha de publicación : |
1998 |
Fuente / Imprenta : |
Anuario Sociedad Criadores de Merino Australiano, 1998, p. 68-72. |
Idioma : |
Español |
Contenido : |
Introducción. 1- Efecto de la administración de forraje sobre la velocidad de crecimiento de terneros y novillos en campo natural de basalto. Tratamientos. Resultados. Consideraciones finales. 2. Efecto de la administración de forraje sobre la velocidad de crecimiento de terneras y vaquillonas en mejoramiento extensivos de basalto. 3. Uso restringido de verdeos-pastoreo de avena por horas en terneras y vaquillonas sobre campo natural. Suplementación con concentrados y/o subproductos. |
Palabras claves : |
ENTORE A LOS DOS AÑOS; PASTOREO POR HORAS; RECRÍA DE REEMPLAZOS. |
Thesagro : |
BASALTO. |
Asunto categoría : |
L01 Ganadería |
Marc : |
LEADER 01061naa a2200217 a 4500 001 1055790 005 2016-10-13 008 1998 bl uuuu u00u1 u #d 100 1 $aBERRETTA, E.J. 245 $aRecría de reemplazos en baslto. 260 $c1998 520 $aIntroducción. 1- Efecto de la administración de forraje sobre la velocidad de crecimiento de terneros y novillos en campo natural de basalto. Tratamientos. Resultados. Consideraciones finales. 2. Efecto de la administración de forraje sobre la velocidad de crecimiento de terneras y vaquillonas en mejoramiento extensivos de basalto. 3. Uso restringido de verdeos-pastoreo de avena por horas en terneras y vaquillonas sobre campo natural. Suplementación con concentrados y/o subproductos. 650 $aBASALTO 653 $aENTORE A LOS DOS AÑOS 653 $aPASTOREO POR HORAS 653 $aRECRÍA DE REEMPLAZOS 700 1 $aPITTALUGA, O. 700 1 $aBRITO, G. 700 1 $aPIGURINA, G. 700 1 $aRISSO, D. 773 $tAnuario Sociedad Criadores de Merino Australiano, 1998, p. 68-72.
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