Ainfo Consulta

Catálogo de Información Agropecuaria

Bibliotecas INIA

 

Botón Actualizar


Botón Actualizar

Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy.
Registro completo
Biblioteca (s) :  INIA Las Brujas.
Fecha :  29/02/2024
Actualizado :  29/02/2024
Tipo de producción científica :  Artículos en Revistas Indexadas Internacionales
Autor :  BROCHADO, C.; DURAN, B.J.; KIEFFER, J.D.; PINCZAK, A.; MENCHACA, A.; GARCIA-GUERRA, A.
Afiliación :  C. BROCHADO, Fundación IRAUy, Montevideo, Uruguay; B. J. DURÁN, Department of Animal Sciences, The Ohio State University, Columbus, OH, United States; J. D. KIEFFER, Department of Animal Sciences, The Ohio State University, Columbus, OH, United States; A. PINCZAK, Fundación IRAUy, Montevideo, Uruguay; JOSE ALEJO MENCHACA BARBEITO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Fundación IRAUy, Montevideo, Uruguay; A. GARCIA-GUERRA, Department of Animal Sciences, The Ohio State University, Columbus, OH, United States.
Título :  Reduced embryo yield obtained from superstimulated ewes with low circulating AMH concentration is improved by lengthening the FSH treatment.
Fecha de publicación :  2024
Fuente / Imprenta :  Theriogenology. 2024, Volume 218, Pages 79-88. https://doi.org/10.1016/j.theriogenology.2024.01.024
ISSN :  0093-691X
DOI :  10.1016/j.theriogenology.2024.01.024
Idioma :  Inglés
Notas :  Article history: Received 20 September 2023; Received in revised form 17 January 2024; Accepted 23 January 2024; Available online 25 January 2024; To be published 1 April 2024. -- Correspondence: Garcia-Guerra, A.; Department of Animal Sciences, The Ohio State University, Columbus, OH, United States; email:garciaguerra.1@osu.edu ; Menchaca, A.; Fundación IRAUy, Montevideo, Uruguay; email:menchaca.alejo@gmail.com -- Funding: Research support was provided by 1) state and federal funds appropriated to The Ohio State University, College of Food, Agricultural, and Environmental Sciences, Ohio Agricultural Research and Development Center and 2) the USDA National Institute of Food and Agriculture, Multi-State Hatch project 1023183 (OHO01496-MRF). Camila Brochado received a scholarship from the Sistema Nacional de Becas (ANII, Uruguay). --
Contenido :  ABSTRACT.- The aim of the present study was to evaluate: 1) the association between AMH, AFC, superovulatory response and embryo yield in sheep; and 2) the effect of FSH treatment length during superstimulation of the first follicular wave on ovarian response and embryo yield, particularly in ewes with low and high AMH. The experiment was performed on 63 Polled Dorset ewes that received an ovarian superstimulatory treatment during the first follicular wave (Day 0 protocol). Ewes were administered a total dose of 240 mg of FSH distributed in six (6-dose regimen, n = 30) or eight (8-dose regimen, n = 33) decreasing doses administered 12 h apart. On Day -9 (random stage of the estrous cycle) and Day 0 (day of the first FSH dose) ovarian ultrasonography was performed and blood samples were collected for AFC and AMH determinations, respectively. A weak positive correlation between AMH and small AFC (follicles <4 mm) was observed (r = 0.23; P = 0.07), and AMH concentration was positively correlated (r = 0.29; P < 0.05) with the number of corpora lutea (CL) determined at embryo collection (i.e., 6 d after insemination). The length of FSH treatment tended (P = 0.06) to affect the ovarian response, such that the number of CL was greater in 8-dose than 6-dose treated ewes, while no differences (P > 0.10) in embryo yield outcomes were observed. For further analysis, ewes were classified into low (<7 ng/mL) and high (>10 ng/mL) serum AMH. In high AMH ewes, there were no differences (P >... Presentar Todo
Palabras claves :  Anti-Müllerian hormone; Antral follicle count; Follicle stimulating hormone; Ovarian superstimulation; Ovine; PLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA.
Asunto categoría :  L53 Fisiología Animal - Reproducción
Marc :  Presentar Marc Completo
Registro original :  INIA Las Brujas (LB)
Biblioteca Identificación Origen Tipo / Formato Clasificación Cutter Registro Volumen Estado
LB103828 - 1PXIAP - DDTheriogenology/2024

Volver


Botón Actualizar


Botón Actualizar

Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy.
Registro completo
Biblioteca (s) :  INIA La Estanzuela.
Fecha actual :  01/11/2021
Actualizado :  03/11/2021
Tipo de producción científica :  Artículos en Revistas Indexadas Internacionales
Circulación / Nivel :  Internacional - --
Autor :  STIRLING, S.; DELABY, L.; MENDOZA, A.; FARIÑA, S.
Afiliación :  MARÍA SOFÍA STIRLING SANTOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.; L. DELABY, INRAE, AgroCampus Ouest, Physiologie, Environnement et Génétique pour l'Animal et les Systèmes d'Elevage, 35590 Saint Gilles, France.; ALEJANDRO FRANCISCO MENDOZA AGUIAR, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANTIAGO FARIÑA, INIA (Instituto Nacional de Investigación Agropecuaria).
Título :  Intensification strategies for temperate hot-summer grazing dairy systems in South America: Effects of feeding strategy and cow genotype.
Fecha de publicación :  2021
Fuente / Imprenta :  Journal of Dairy Science, September 2021. IN PRESS. doi: https://doi.org/10.3168/jds.2021-20507
DOI :  10.3168/jds.2021-20507
Idioma :  Inglés
Notas :  Article history: Received 23 March 2021/ Accepted 31 July 2021/ Available online 16 September 2021.
Contenido :  ABSTRACT: Pasture-based dairy systems present the opportunity to increase productivity per hectare through increasing stocking rate and forage utilization. However, in the temperate hot-summer region of South America, different productive strategies are being adopted by farmers. The aim of this study was to quantify the effect of feeding strategy (FS) and cow genotype (G) on individual animal and whole-farm biophysical performance. A design with 2 × 2 levels of intensification aiming to increase home-grown forage utilization and milk output per hectare was evaluated. The experiment was a randomized complete block design with a 2 × 2 factorial arrangement of treatments, combining 2 feeding strategies with varying proportions of grazing in the annual feeding budget [grass fixed (GFix) and grass maximum (GMax)] and 2 Holstein Friesian cow genotypes [New Zealand (NZHF) or North American Holstein Friesian (NAHF)]. The effects of FS, G, and their interaction were analyzed using mixed models. New Zealand Holstein Friesian cows presented lower individual milk yield and higher milk component concentrations, maintained higher average body condition score, and increased body weight (BW) throughout the experiment, while presenting a better reproductive performance compared with the NAHF cows. Although all farmlets were planned at the same stocking rate on a per kilogram of BW basis, the current stocking rate changed as a result of animal performance and grass utilization resulting in NZ... Presentar Todo
Palabras claves :  Feeding system home; Genotype; Grown forage; Strain.
Asunto categoría :  --
Marc :  Presentar Marc Completo
Registro original :  INIA La Estanzuela (LE)
Biblioteca Identificación Origen Tipo / Formato Clasificación Cutter Registro Volumen Estado
LE103464 - 1PXIAP - DDPP/Journal of Dairy Science/2021
Volver
Expresión de búsqueda válido. Check!
 
 

Embrapa
Todos los derechos reservados, conforme Ley n° 9.610
Política de Privacidad
Área Restricta

Instituto Nacional de Investigación Agropecuaria
Andes 1365 - piso 12 CP 11100 Montevideo, Uruguay
Tel: +598 2902 0550 Fax: +598 2902 3666
bibliotecas@inia.org.uy

Valid HTML 4.01 Transitional