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Registros recuperados: 5
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A conceptual model to describe heat stress in dairy cows from actual to questionable loops Acta Agron. (Palmira)
Molina Benavides,Raúl Andrés; Sánchez Guerrero,Hugo; Atzori,Alberto Stanislao.
Abstract Thermal environment is recognized to be one the most important ecological factor to determine domestic animal growth, development and productivity for direct and indirect effects on its physiology and behavior. Despite having specific and individual adaptation, is very common, within seasonal or diurnal temperature variations, animals deal with situations outside their thermal comfort zone. Due to heat stress, dairy cows reduce milk production and fertility, and therefore, had achieved an increasing in metabolic disorders incidence, causing low revenues to farm in short and medium periods. Due to world climate change more impact of the meteorological variables on animal responses is expected for the future. This study aimed to describe and...
Tipo: Journal article Palavras-chave: Climate change; Grazing; Livestock production systems; Milk production; System dynamics; Temperature.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100059
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A glimpse of the future in animal nutrition science. 1. Past and future challenges R. Bras. Zootec.
Tedeschi,Luis Orlindo; Almeida,Amélia Katiane de; Atzori,Alberto Stanislao; Muir,James Pierre; Fonseca,Mozart Alves; Cannas,Antonello.
ABSTRACT If the world population continues to increase exponentially, wealth and education inequalities might become more pronounced in the developing world. Thus, offering affordable, high-quality protein food to people will become more important and daunting than ever. Past and future challenges will increasingly demand quicker and more innovative and efficient solutions. Animal scientists around the globe currently face many challenging issues: from ensuring food security to prevent excess of nutrient intake by humans, from animal welfare to working with genetic-engineered animals, from carbon footprint to water footprint, and from improved animal nutrition to altering the rumen microbiome. Many of these issues are most likely to continue (or to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Challenges; Issues; Livestock; Ruminant; Production.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000500438
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Dynamic estimation of greenhouse gas emissions from bovine livestock of Valle del Cauca, Colombia Acta Agron. (Palmira)
Molina Benavides,Raúl Andrés; Sánchez Guerrero,Hugo; Campos Gaona,Rómulo; Atzori,Alberto Stanislao; Morales,Juan David.
Abstract The contribution of Colombia to global emissions of greenhouse gases (GHGs) is low (0.37%); from this percentage, 38% is attributed to agriculture. There are few studies on GHGs emissions at the regional level for agriculture. Therefore, the aim of this research is to estimate dynamically GHG and carbon footprint produced by cattle in the department of Valle del Cauca, Colombia. GHG estimates were established as follows: Tier II of IPCC methodology (2006), and population trends, which were simulated using dynamic system. According to the departmental livestock inventory in recent years (2009-2015), average emissions were 673 million of CO2eq. year-1, with emissions intensity (EI) of 5.58 kgCO2eq.kg.milk-1 and 3.54 kgCO2eq.kgmeat-1. Simulating the...
Tipo: Journal article Palavras-chave: Allocation factor; Emission factor; Emission intensity; Livestock; System dynamic.
Ano: 2017 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000300422
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Feeding strategies to design the fatty acid profile of sheep milk and cheese R. Bras. Zootec.
Nudda,Anna; Battacone,Gianni; Boaventura Neto,Oscar; Cannas,Antonello; Francesconi,Ana Helena Dias; Atzori,Alberto Stanislao; Pulina,Giuseppe.
The majority of sheep milk produced in the world is transformed into cheese. Feeding is a major factor affecting the quality of sheep milk and, therefore, of sheep cheese. Because fat is the main compound of cheese, this review gives an update on the effects of feeding and nutrition on milk fat content and deeply discusses feeding strategies aimed at increasing the levels of healthy fatty acids (FA), such as conjugated linoleic acid and omega-3 FA, in milk and cheese in the human diet. In addition, the use of alternative feed resources such as by-products, aromatic plants, and phenolic compounds in the sheep diet and their effects on milk and cheese FA composition are also discussed. Among feeding strategies, grazing and the use of supplements rich in oils...
Tipo: Info:eu-repo/semantics/article Palavras-chave: By-products; Cheese; CLA; Dairy sheep; Milk quality; Nutrition.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000800445
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Models for estimating feed intake in small ruminants R. Bras. Zootec.
Pulina,Giuseppe; Avondo,Marcella; Molle,Giovanni; Francesconi,Ana Helena Dias; Atzori,Alberto Stanislao; Cannas,Antonello.
This review deals with the most relevant limits and developments of the modeling of intake of sheep and goats reared intensively and extensively. Because small ruminants are normally fed ad libitum, voluntary feed intake is crucial in feeding tactics and strategies aimed at optimal animal production. The effects of genetic, neuroendocrine, hormonal, feed and environmental factors on voluntary feed intake were discussed. Then, several mathematical models to estimate dry matter intake (DMI) were examined, with emphasis on empirical models for sheep and goats in intensive farm systems or in extensive areas under pasture or rangeland conditions. A sensitivity analysis of four models of prediction of DMI in housed lactating dairy sheep and meat sheep breeds was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dry matter intake; Feedlot; Goats; Grazing; Modeling; Sheep.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900010
Registros recuperados: 5
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