Browsing Artículos científicos by Title
Now showing items 392-411 of 443
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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 ... -
Temperature and host plant species affect the performance and immunocompetence of an outbreak defoliator in northwestern Patagonia
(Royal Entomological Society, 2022-03)1. Rising temperature has been associated with increased occurrence of herbivorous insect outbreaks, explained by several direct and indirect mechanisms. Whereas natural enemies are known key drivers of forest-defoliating ... -
Temperature explains variable spread rates of the invasive woodwasp Sirex noctilio in the Southern Hemisphere
(2014-02)La frecuencia de introducciones de no indígena insectos forestales en nuevos hábitats va en aumento en todo el mundo, a menudo con consecuencias profundamente negativas sobre los ecosistemas naturales y las plantaciones ... -
Tensiones entre conservación de ecosistemas y desarrollo territorial: hacia un abordaje socioecológico en las Ciencias Agropecuarias
(Editorial Potificia Universidad Javeriana, 2018-06)Las ciencias agropecuarias constituyen un vínculo académico entre sociología y ecología. Actualmente, existe la predominancia de una perspectiva tecnocrática orientada a aumentar la productividad y la eficiencia, con una ... -
The application of ecologically intensive principles to the systemic redesign of livestock farms on native grasslands: A case of co-innovation in Rocha, Uruguay
(Elsevier, 2021-06)CONTEXT: Family-run cow-calf farms based on native grasslands exhibit low economic and social sustainability, as reflected in low family incomes and high workloads. Experimental results have shown that pasture–herd interaction ... -
The effect of pre-slaughter stressors on physiological indicators and meat quality traits on Merino lambs
(Elsevier, 2013-04)Merino lambs of 90 days of mean age (standard deviation – s.d. – 6 days) and 22.0 kg of mean live weight (s.d. 2.7 kg) were used to explore the effects of pre-slaughter stressors on physiological characteristics and meat ... -
The effect of weeding time on raspberry (Rubus idaeus L.) crops yield and weed community in Rio Negro Province, Argentina
(Elsevier, 2013-02)Raspberry (Rubus idaeus L.) is the most important crop in the (Andean Shire), an area situated at the south of Rio Negro Province in the south of Argentina. Organic berries production in this area increased significantly ... -
The effects of dietary nitrate on plasma glucose and insulin sensitivity in sheep
(Wiley Online Library, 2019-07)Nitrate (NO3 ¯) is an effective non‐protein nitrogen source for gut microbes and reduces enteric methane (CH4) production in ruminants. Nitrate is reduced to ammonia by rumen bacteria with nitrite (NO2 ¯) produced as an ... -
The effects of Quaternary glaciations in Patagonia as evidenced by chloroplast DNA phylogeography of Southern beech Nothofagus obliqua
(Springer, 2009-03)Climatic oscillations during the Quaternary strongly affected the distribution of warm-temperate tree species, which experienced local restrictions into ice-free areas and posterior expansions. To evaluate the impact of ... -
The effects of volcanic ash from Puyehue-Caulle range eruption on the survival of Dichroplus vittigerum (Orthoptera: Acrididae)
(2013-03)The aim of this work was to evaluate the toxicity of volcanic ash from the volcanic complex Puyehue-Caulle Range on the grasshopper, Dichroplus vittigerum, and compare the results with the effect of diatomaceous earth, an ... -
The impact of different natural environments on the regeneration dynamics of two Nothofagus species across elevation in the southern Andes
(Elsevier, 2020-05-15)A widely accepted paradigm in forest ecology proposes that patterns of relative abundance among mature forest trees are largely influenced by biotic and abiotic processes that operate most intensely during the earliest ... -
The Influence of Food and Con-specifics on the Flight Potential of the Parasitoid Ibalia leucospoides
(Springer, 2011-11)For insect parasitoids, knowledge of their flight capability is essential for a general understanding of the relationship with their hosts. For instance, flight capacity might partly determine their efficacy as biological ... -
The origins of global invasions of the German wasp (Vespula germanica) and its infection with four honey bee viruses
(Springer, 2018-12)A successful control or eradication programme using biological control or genetically-mediated methods requires knowledge of the origin and the extent of wasp genetic diversity. Mitochondrial DNA variation in the native ... -
The sign and magnitude of tree–grass interaction along a global environmental gradient
(2016-12)Aim: The ecological literature posits that positive interactions are preponderant in stressful environments; however, the net balance between positive and negative interactions at the community level is still under debate. ... -
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 ... -
Towards sustainable forestry development in Patagonia: truths and myths of environmental impacts of plantations with fast-growing conifers
(2010)In NW Patagonia region, Argentina, South-America, there are about 70,000 ha of planted forests replacing from native forests to grasslands with different degrees of deterioration due to previous land use. Although forestry ... -
Tradeoffs around crop residue biomass in smallholder crop-livestock systems - Whatïs next?
(2015-03)Much has been written on the tradeoffs that smallholder farmers face when having to allocate their biomass resources among competing objectives such as feed, fuel, mulch, compost or the market. This paper summarises yet a ... -
Transgénesis: una moderna biotecnología reproductiva en animales de interés zootécnico
(Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2014-08)Los continuos avances en el conocimiento de la biología molecular han permitido un gran progreso de la ciencia, mediante la modificación genética tanto de virus, bacterias como de organismos superiores. Estos procedimientos ... -
Las transiciones agroecológicas: múltiples escalas, niveles y desafíos
(Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, 2019)Transitar hacia una producción de alimentos sostenible a través de los principios de la agroecología implica no una transición, sino varias transiciones simultáneas, a diferentes escalas, niveles y dimensiones; de índole ... -
Trapping success and flight behavior of two parasitoid species of the woodwasp Sirex noctilio
(Elsevier, 2019-04-19)Classical biological control relies on the deliberate introduction of natural enemies to reduce pest populations below damage thresholds. Knowledge on key aspects of the behavior of antagonists and their population densities ...