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Addition of eCG to a 14 d prostaglandin treatment regimen in sheep FTAI programs
(Elsevier, 2020-10)In the present study, there was evaluation of the alternative of adding eCG as part of a longinterval prostaglandin-F2α (PG) treatment on the reproductive efficiency of Merino sheep during the breeding season. A total of ... -
Caso Diagnóstico N°4 "Toxemia de la preñez en ovejas"
(Ediciones INTA, 2018-07)Presentamos un brote de Toxemia de la Preñez en ovinos ocurrido en Comallo, Río Negro. Esta enfermedad también fue observada en el invierno de 2017 en chacras de Picún Leufú, Neuquén. El mal manejo nutricional que reciben ... -
Caso Diagnóstico Nº 11 “Tumores de la piel en cabras y ovejas"
(EEA Bariloche, INTA, 2021-12)En esta edición presentamos tres casos de tumores de la piel en pequeños rumiantes que ocurrieron en diferentes campos de Río Negro. -
Community‐based breeding programmes are a viable solution for Ethiopian small ruminant genetic improvement but require public and private investments
(Wiley Online Library, 2019-04)Ethiopia has a large and diverse population of small ruminants, which contribute substantially to the livelihood and income of the rural poor and the country at large. However, the sector faces a number of challenges. ... -
Dietary nitrate and presence of protozoa increase nitrate and nitrite reduction in the rumen of sheep
(Wiley, 2020-04)Nitrate (NO−3) supplementation is an effective methane (CH4) mitigation strategy for ruminants but may produce nitrite (NO−2) toxicity. It has been reported that rumen protozoa have greater ability for NO−3 and NO−2 reduction ... -
Direct and indirect effects of climate and vegetation on sheep production across Patagonian rangelands (Argentina)
(Elsevier, 2021-05)Extensive sheep production is an important agricultural industry in the Patagonia region of Argentina, where the most important production metric is the effective lambing rate of the sheep (L%). Climate factors can affect ... -
Efecto de tratamientos hormonales sobre la eficiencia reproductiva, mortalidad embrionaria y fetal, en ovejas Merino de la Patagonia Norte
(Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, 2020)Se estudió el efecto de la administración de hCG o GnRH a los 4 días posinseminación en ovejas Merino sobre: - la inducción de cuerpos lúteos accesorios (CL acc), la concentración de progesterona [P4] (Ensayo I), - las ... -
Efecto del clima y atributos de la vegetación como factores de control de la producción ovina en Patagonia Norte
(Edición del Autor, 2018)Aproximadamente el 75% del territorio de Argentina corresponde a tierras áridas y semiáridas. De ellas, una tercera parte se halla en la región patagónica, donde la principal actividad agropecuaria es la ganadería extensiva, ... -
Effect of GnRH or hCG administration on Day 4 post insemination on reproductive performance in Merino sheep of North Patagonia
(Elsevier, 2018-12)Different therapeutic strategies have been used with the objective of improve luteal function to reduce embryonic losses. The objective of this work was to study the effect of the administration of GnRH or hCG at Day 4 ... -
Environmental influence on Merino sheep wool quality through the lens of seasonal variations in fibre diameter
(Elsevier, 2020-10)Wool production in arid and semiarid rangelands is strongly affected by environmental variability. Seasonal fluctuations of the environmental conditions drive variations in the nutritional status of the sheep, wool growth ... -
Esquila preparto, una tecnología de adopción masiva y alto impacto en la producción ovina de la Patagonia
(Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2015-12-16)La esquila de lanares poco antes de la parición tiene ventajas y desventajas que dependen del ambiente y del sistema de producción. Investigaciones realizadas por el INTA en Patagonia demostraron que la esquila preparto ... -
Hormonal therapeutic strategy on the induction of accessory corpora lutea in relation to follicle size and on the increase of progesterone in sheep
(2018)We determined the effect of GnRH or hCG treatment on day 4 post-time artificial insemination (FTAI) onthe formation of accessory corpora lutea (acc-CL) and on the concentration of serum progesterone (P4)insheep. Multiparous ... -
Nitrate and nitrite absorption, recycling and retention in tissues of sheep
(Elsevier, 2021-07)Dietary nitrate is of increasing interest both for the pharmacological effects of its metabolites as well as its capacity to inhibit methanogenesis in the gut. A sequence of three experiments was conducted to investigate ... -
Preselection of high and low ovulatory responders in sheep multiple ovulation and embryo transfer programs
(2015)The present study evaluated the feasibility of carrying out an easy-to-handle and cost-efficient test for the preselection of high– and low–ovulatory responder ewes under superovulatory protocols. The test was based on the ... -
Producción de carne y lana de corderos pesados con suplementación invernal en sierras y mesetas occidentales de Río Negro
(Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, 2010-06-24)El cordero tradicional que se produce en Río Negro posee un peso promedio de la canal de 10,9 kg. Un mayor peso de faena permite realizar el despiece de la canal. Para producir corderos de mayor peso de faena es necesaria ... -
Short-term energy supplementation before lambing improves maternal behaviour, udder volume, colostrum viscosity and lamb birthweight in ewes under extensive grazing
(Elsevier, 2023-02)The aim of the present experiment was to evaluate the effect of short-term energy supplementation before lambing on maternal and lamb behaviour and colostrum production in a large-scale trial in Merino sheep under extensive ... -
La suplementación con alimento balanceado con cloruro de sodio como limitador del consumo mejora la ganancia diaria de peso en corderas Merino en pastoreo extensivo
(Asociación Argentina de Producción Animal, 2020-11)El objetivo fue evaluar los efectos de la suplementación invernal en condiciones extensivas utilizando alimento balanceado con cloruro de sodio ( NaCl ) como limitador de consumo en corderas de reposición. -
Technical recommendations for artificial insemination in sheep
(Colégio Brasileiro de Reprodução Animal, 2019-11)Artificial insemination (AI) was the first important biotechnology applied to improve the genetics of farm animals. It allows the rapid and massive diffusion of desirable characteristics of males with high productive ... -
The Use of hCG for Inducing Ovulation in Sheep Estrus Synchronization Impairs Ovulatory Follicle Growth and Fertility
(MDPI, 2021-04)Currently, there is an intense effort to find an alternative hormone to eCG to induce ovulation after estrus synchronization treatments in sheep. One of the proposed alternatives is based on the use of hCG, but the results ... -
Tratamientos hormonales para incrementar la eficiencia reproductiva en los ovinos
(Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2016-07-20)La eficiencia reproductiva en el ovino puede verse afectada por las pérdidas ocurridas durante la gestación las cuales constituyen uno de los factores que influyen en los parámetros productivos de esta especie. Entre las ...