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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
21/02/2014 |
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Actualizado : |
15/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
QUINTANS, G.; VIÑOLES, C.; SINCLAIR, K. D. |
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Afiliación : |
GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAROLINA VIÑOLES GIL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Follicular growth and ovulation in postpartum beef cows following calf removal and GnRH treatment. |
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Fecha de publicación : |
2004 |
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Fuente / Imprenta : |
Animal Reproduction Science, 2004, v.80, p. 5-14. |
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DOI : |
10.1016/S0378-4320(03)00154-4 |
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Idioma : |
Inglés |
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Contenido : |
Abstract:
This study investigated the effects of calf removal (CR) and gonadotrophin releasing hormone (GnRH) administration on the duration of the postpartum anoestrous period in suckled beef cows. Experiment 1 involved 20 multiparous suckled cows that were assigned to each of two treatments on Day 61 postpartum: (i) unlimited access to their calves (C; n=10) and (ii) calf removal for a period of 96 h (CR96, n=10). Experiment 2 involved 24 multiparous cows that were assigned to each of two treatments on Day 63 postpartum: (i) CR96 (n=12); and (ii) CR96 plus 250 microg of GnRH administered on the day before calf return (CR96+GnRH, n=12). Experiment 3 was a 3x2 factorial experiment, involving 48 multiparous cows assigned to the experiment on Day 58 postpartum. The factors were C, CR96 and calf removal for 144 h (CR144), and 0 or 250 microg GnRH administered on the day prior calf return. In Experiment 1, the number of cows that ovulated within 12 days of calf removal was higher (P<0.05) in CR96 group (3/9) compared to the C group (0/10). In Experiment 2, all 12 cows in the CR96+GnRH group ovulated. In contrast only 4/12 cows in the CR96 group ovulated in response to calf removal. The diameter of the ovulatory follicle tended (P=0.06) to be smaller in CR96+GnRH cows (9.8 +/- 0.3 mm) than in CR96 cows (11.3 +/- 0.9 mm). The maximum diameter attained by the corpus luteum (CL) also tended (P=0.08) to be smaller for cows in the CR96+GnRH than for cows in the CR96 group (12.1 +/- 2.4 mm versus 16.7 +/- 7.5 mm, respectively). Plasma progesterone concentrations 12 days after calf removal tended (P=0.06) to be lower in CR96+GnRH cows than in CR96 cows (0.66 +/- 0.1 ng/ml versus 2.00 +/- 1.1 ng/ml, respectively). Few cows in the CR96+GnRH group regained normal cyclical activity and the interval from onset of calf removal to conception was longer (P<0.05) compared to cows in the CR group (52.2 +/- 5.7 days versus 20.0 +/- 6.6 days). In Experiment 3, 5/8 cows on the CR144 group and all 8 cows in the CR144+GnRH group ovulated. However, the interval from CR to conception was similar for all treatments. Temporary (96-144 h) calf removal, particularly in combination with GnRH treatment, can induce a high proportion of beef cows to ovulate, but the restoration of oestrous cycles may not be achieved. MenosAbstract:
This study investigated the effects of calf removal (CR) and gonadotrophin releasing hormone (GnRH) administration on the duration of the postpartum anoestrous period in suckled beef cows. Experiment 1 involved 20 multiparous suckled cows that were assigned to each of two treatments on Day 61 postpartum: (i) unlimited access to their calves (C; n=10) and (ii) calf removal for a period of 96 h (CR96, n=10). Experiment 2 involved 24 multiparous cows that were assigned to each of two treatments on Day 63 postpartum: (i) CR96 (n=12); and (ii) CR96 plus 250 microg of GnRH administered on the day before calf return (CR96+GnRH, n=12). Experiment 3 was a 3x2 factorial experiment, involving 48 multiparous cows assigned to the experiment on Day 58 postpartum. The factors were C, CR96 and calf removal for 144 h (CR144), and 0 or 250 microg GnRH administered on the day prior calf return. In Experiment 1, the number of cows that ovulated within 12 days of calf removal was higher (P<0.05) in CR96 group (3/9) compared to the C group (0/10). In Experiment 2, all 12 cows in the CR96+GnRH group ovulated. In contrast only 4/12 cows in the CR96 group ovulated in response to calf removal. The diameter of the ovulatory follicle tended (P=0.06) to be smaller in CR96+GnRH cows (9.8 +/- 0.3 mm) than in CR96 cows (11.3 +/- 0.9 mm). The maximum diameter attained by the corpus luteum (CL) also tended (P=0.08) to be smaller for cows in the CR96+GnRH than for cows in the CR96 group (12.1 +/- 2.... Presentar Todo |
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Thesagro : |
BOVINOS; REPRODUCCION ANIMAL; REPRODUCTIVIDAD; URUGUAY. |
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Asunto categoría : |
L53 Fisiología Animal - Reproducción |
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Marc : |
LEADER 02919naa a2200205 a 4500
001 1032802
005 2019-10-15
008 2004 bl uuuu u00u1 u #d
024 7 $a10.1016/S0378-4320(03)00154-4$2DOI
100 1 $aQUINTANS, G.
245 $aFollicular growth and ovulation in postpartum beef cows following calf removal and GnRH treatment.
260 $c2004
520 $aAbstract: This study investigated the effects of calf removal (CR) and gonadotrophin releasing hormone (GnRH) administration on the duration of the postpartum anoestrous period in suckled beef cows. Experiment 1 involved 20 multiparous suckled cows that were assigned to each of two treatments on Day 61 postpartum: (i) unlimited access to their calves (C; n=10) and (ii) calf removal for a period of 96 h (CR96, n=10). Experiment 2 involved 24 multiparous cows that were assigned to each of two treatments on Day 63 postpartum: (i) CR96 (n=12); and (ii) CR96 plus 250 microg of GnRH administered on the day before calf return (CR96+GnRH, n=12). Experiment 3 was a 3x2 factorial experiment, involving 48 multiparous cows assigned to the experiment on Day 58 postpartum. The factors were C, CR96 and calf removal for 144 h (CR144), and 0 or 250 microg GnRH administered on the day prior calf return. In Experiment 1, the number of cows that ovulated within 12 days of calf removal was higher (P<0.05) in CR96 group (3/9) compared to the C group (0/10). In Experiment 2, all 12 cows in the CR96+GnRH group ovulated. In contrast only 4/12 cows in the CR96 group ovulated in response to calf removal. The diameter of the ovulatory follicle tended (P=0.06) to be smaller in CR96+GnRH cows (9.8 +/- 0.3 mm) than in CR96 cows (11.3 +/- 0.9 mm). The maximum diameter attained by the corpus luteum (CL) also tended (P=0.08) to be smaller for cows in the CR96+GnRH than for cows in the CR96 group (12.1 +/- 2.4 mm versus 16.7 +/- 7.5 mm, respectively). Plasma progesterone concentrations 12 days after calf removal tended (P=0.06) to be lower in CR96+GnRH cows than in CR96 cows (0.66 +/- 0.1 ng/ml versus 2.00 +/- 1.1 ng/ml, respectively). Few cows in the CR96+GnRH group regained normal cyclical activity and the interval from onset of calf removal to conception was longer (P<0.05) compared to cows in the CR group (52.2 +/- 5.7 days versus 20.0 +/- 6.6 days). In Experiment 3, 5/8 cows on the CR144 group and all 8 cows in the CR144+GnRH group ovulated. However, the interval from CR to conception was similar for all treatments. Temporary (96-144 h) calf removal, particularly in combination with GnRH treatment, can induce a high proportion of beef cows to ovulate, but the restoration of oestrous cycles may not be achieved.
650 $aBOVINOS
650 $aREPRODUCCION ANIMAL
650 $aREPRODUCTIVIDAD
650 $aURUGUAY
700 1 $aVIÑOLES, C.
700 1 $aSINCLAIR, K. D.
773 $tAnimal Reproduction Science, 2004$gv.80, p. 5-14.
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INIA Treinta y Tres (TT) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
24/09/2018 |
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Actualizado : |
12/02/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
AMORIM, S.T.; KLUSKA, S.; PIATTO BERTON, M.; ANTUNES DE LEMOS, M.V.; PERIPOLLI, E.; BONVINO STAFUZZA, N.; FERNÁNDEZ MARTÍN, J.; SAURA ÁLVAREZ, M.; VILLANUEVA GAVIÑA, B.; TORO, M.A.; BANCHERO, G.; SILVA OLIVEIRA, P.; GRIGOLETTO, L.; PEREIRA ELER, J.; BALDI, F.; STERMAN FERRAZ, J.B. |
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Afiliación : |
SABRINA THAISE AMORIM, Universidade Federal de Santa Catarina; SABRINA KLUSKA, Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias; MARIANA PIATTO BERTON; MARCOS VINICIUS ANTUNES DE LEMOS, Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias; ELISA PERIPOLLI, Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias; NEDENIA BONVINO STAFUZZA, Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias; JESÚS FERNÁNDEZ MARTÍN, INIA España (Instituto Nacional de Investigación y Tecnología Agraría y Alimentaria); MARÍA SAURA ÁLVAREZ, INIA España (Instituto Nacional de Investigación y Tecnología Agraría y Alimentaria); BEATRIZ VILLANUEVA GAVIÑA, INIA España (Instituto Nacional de Investigación y Tecnología Agraría y Alimentaria); MIGUEL ÁNGEL TORO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PRISCILA SILVA OLIVEIRA, Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos; LAÍS GRIGOLETTO, Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos; JOANIR PEREIRA ELER, Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos; FERNANDO BALDI, Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias; JOSÉ BENTO STERMAN FERRAZ, Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos. |
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Título : |
Genomic study for maternal related traits in Santa Inês sheep breed. |
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Fecha de publicación : |
2018 |
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Fuente / Imprenta : |
Livestock Science, November 2018, Volume 217, Pages 76-84. Doi: https://doi.org/10.1016/j.livsci.2018.09.011 |
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ISSN : |
1871-1413 |
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DOI : |
10.1016/j.livsci.2018.09.011 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 23 January 2018 // Revised 6 September 2018 // Accepted 11 September 2018 // Available online 20 September 2018. |
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Contenido : |
ABSTRACT.
The aim of this study was to estimate variance components and to identify genomic regions and pathways associated with maternal related traits in Santa Inês sheep breed adapted to tropical climate. Phenotypic records for maternal efficiency (ME), metabolic maternal efficiency (MME), twin lambing (TL), adult weight (AW), metabolic adult weight (MAW), and body condition score (BCS) from 1,333 ewes from Santa Inês breed were used. A total of 576 animals were genotyped with the Ovine SNP12k BeadChip (Illumina, Inc.), that contains 12,785 bialleleic SNP markers. The variance components were estimated using a single trait animal model by single step genomic BLUP procedure. For AW, MAW, BCS, ME, MME and TL the mean values were 50.30 (±9.76), 19.2 (±2.33), 2.76 (±0.72), 34.6 (±15.95), 91.8 (±42.52), and 1.27 (±0.44) respectively. The heritabilities estimated were moderate for AW (0.32) and MAW (0.33) and low for BCS (0.04), ME (0.07), MME (0.08), and TL (0.10). A total of 7, 8, 13, 16, 19, and 09 candidate regions for ME, MME, TL, AW, MAW and BCS traits were identified respectively. AW and MAW had a total of 15 regions in common, while AW and BCS had a common region on chromosome 21. ME and MME had six candidate regions in common, and TL had no common regions with any other features. The maternal indicator traits have genetic variability to respond to selection in Santa Inês breed, and it would be expected higher genetic gain for ewe adult weight when compared to the others studied traits. Several candidate regions related to growth, reproduction, lactation and enviromental adaptability were identified in this study. These candidate regions would give support to identify and select animals with higher maternal efficiency and fitness, and consequently, increase the productivity of Santa Inês sheep. Moreover, the results of this study should help to understand the genetic and physiologic mechanism associated with maternal related traits in Santa Inês breed.
© 2018 Elsevier B.V. All rights reserved. MenosABSTRACT.
The aim of this study was to estimate variance components and to identify genomic regions and pathways associated with maternal related traits in Santa Inês sheep breed adapted to tropical climate. Phenotypic records for maternal efficiency (ME), metabolic maternal efficiency (MME), twin lambing (TL), adult weight (AW), metabolic adult weight (MAW), and body condition score (BCS) from 1,333 ewes from Santa Inês breed were used. A total of 576 animals were genotyped with the Ovine SNP12k BeadChip (Illumina, Inc.), that contains 12,785 bialleleic SNP markers. The variance components were estimated using a single trait animal model by single step genomic BLUP procedure. For AW, MAW, BCS, ME, MME and TL the mean values were 50.30 (±9.76), 19.2 (±2.33), 2.76 (±0.72), 34.6 (±15.95), 91.8 (±42.52), and 1.27 (±0.44) respectively. The heritabilities estimated were moderate for AW (0.32) and MAW (0.33) and low for BCS (0.04), ME (0.07), MME (0.08), and TL (0.10). A total of 7, 8, 13, 16, 19, and 09 candidate regions for ME, MME, TL, AW, MAW and BCS traits were identified respectively. AW and MAW had a total of 15 regions in common, while AW and BCS had a common region on chromosome 21. ME and MME had six candidate regions in common, and TL had no common regions with any other features. The maternal indicator traits have genetic variability to respond to selection in Santa Inês breed, and it would be expected higher genetic gain for ewe adult weight when compared to the other... Presentar Todo |
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Palabras claves : |
BODY WEIGHT; GWAS; MATTERNAL EFFICIENCY; OVIS ARIES. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03310naa a2200385 a 4500
001 1059073
005 2021-02-12
008 2018 bl uuuu u00u1 u #d
022 $a1871-1413
024 7 $a10.1016/j.livsci.2018.09.011$2DOI
100 1 $aAMORIM, S.T.
245 $aGenomic study for maternal related traits in Santa Inês sheep breed.$h[electronic resource]
260 $c2018
500 $aArticle history: Received 23 January 2018 // Revised 6 September 2018 // Accepted 11 September 2018 // Available online 20 September 2018.
520 $aABSTRACT. The aim of this study was to estimate variance components and to identify genomic regions and pathways associated with maternal related traits in Santa Inês sheep breed adapted to tropical climate. Phenotypic records for maternal efficiency (ME), metabolic maternal efficiency (MME), twin lambing (TL), adult weight (AW), metabolic adult weight (MAW), and body condition score (BCS) from 1,333 ewes from Santa Inês breed were used. A total of 576 animals were genotyped with the Ovine SNP12k BeadChip (Illumina, Inc.), that contains 12,785 bialleleic SNP markers. The variance components were estimated using a single trait animal model by single step genomic BLUP procedure. For AW, MAW, BCS, ME, MME and TL the mean values were 50.30 (±9.76), 19.2 (±2.33), 2.76 (±0.72), 34.6 (±15.95), 91.8 (±42.52), and 1.27 (±0.44) respectively. The heritabilities estimated were moderate for AW (0.32) and MAW (0.33) and low for BCS (0.04), ME (0.07), MME (0.08), and TL (0.10). A total of 7, 8, 13, 16, 19, and 09 candidate regions for ME, MME, TL, AW, MAW and BCS traits were identified respectively. AW and MAW had a total of 15 regions in common, while AW and BCS had a common region on chromosome 21. ME and MME had six candidate regions in common, and TL had no common regions with any other features. The maternal indicator traits have genetic variability to respond to selection in Santa Inês breed, and it would be expected higher genetic gain for ewe adult weight when compared to the others studied traits. Several candidate regions related to growth, reproduction, lactation and enviromental adaptability were identified in this study. These candidate regions would give support to identify and select animals with higher maternal efficiency and fitness, and consequently, increase the productivity of Santa Inês sheep. Moreover, the results of this study should help to understand the genetic and physiologic mechanism associated with maternal related traits in Santa Inês breed. © 2018 Elsevier B.V. All rights reserved.
653 $aBODY WEIGHT
653 $aGWAS
653 $aMATTERNAL EFFICIENCY
653 $aOVIS ARIES
700 1 $aKLUSKA, S.
700 1 $aPIATTO BERTON, M.
700 1 $aANTUNES DE LEMOS, M.V.
700 1 $aPERIPOLLI, E.
700 1 $aBONVINO STAFUZZA, N.
700 1 $aFERNÁNDEZ MARTÍN, J.
700 1 $aSAURA ÁLVAREZ, M.
700 1 $aVILLANUEVA GAVIÑA, B.
700 1 $aTORO, M.A.
700 1 $aBANCHERO, G.
700 1 $aSILVA OLIVEIRA, P.
700 1 $aGRIGOLETTO, L.
700 1 $aPEREIRA ELER, J.
700 1 $aBALDI, F.
700 1 $aSTERMAN FERRAZ, J.B.
773 $tLivestock Science, November 2018, Volume 217, Pages 76-84. Doi: https://doi.org/10.1016/j.livsci.2018.09.011
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