Consulta: subjectFacets:"Biohydrogenation"
Registros recuperados: 7
Data/hora: 01/06/2024 17:54:11

Profile of ingested fatty acids and in the duodenal digest of steers fed different diets
Provedor de dados: 96
Autores: Menezes,Luís Fernando Glasenapp de; Kozloski,Gilberto Vilmar; Restle,João; Brondani,Ivan Luiz; Pazdiora,Raul Dirceu; Cattelam,Jonatas.
It was evaluated in this study the effect of the type of the diet on duodenal flow of long-chain fatty acids in steers. The tested diets were the following: conventional (feedlot diet composed of 60% corn silage and 40% of concentrate); winter forage silage - rye grass (Lolium multiflorum, Lam); or tropical forage silage - association of millet (Pennisetum americanum, Leeke + alexander grass, Brachiaria plantaginea). Six Charolais × Nellore crossbred steers with cannulas in duodenum were used in a 3 × 3 double Latin square. Dry material intake was similar among the groups (mean of 4,037 g/day), but the intake of total fatty acids and saturated fatty acids were higher in the group fed tropical pasture silage. On the other hand, the animals which received...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biohydrogenation; CLA; Dry matter flow; Fatty acids flow.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001100025

Influence of lipid supplementation on milk components and fatty acid profile
Provedor de dados: 96
Autores: Machado,Henrique Valentim Nunes; Pereira,José Carlos; Bettero,Vitor Pereira; Leonel,Fernando de Paula; Araújo,Raphael Pavesi; Moreira,Leonardo Marmo; Teixeira,Rafael Bastos; Zervoudakis,Joanis Tilemahos.
ABSTRACT The objective of this study was to evaluate the effects of different lipid sources in diets for lactating cows on milk yield and composition, conjugated linoleic acid (CLA) content, and fatty acid profile in the milk fat. Five primiparous Holstein cows were distributed in a 5 × 5 Latin square design. Treatments were: control (no lipid addition) and four other diets containing different lipids sources - ground raw soybean, cottonseed, soybean oil, and calcium salts of soybean fatty acids (CSSFA). The greater milk yield (kg/day) and milk lactose (g/kg) and solids non-fat (g/kg) contents were obtained with the animals fed diets with CSSFA. Regarding the fatty acid profile in the milk fat, the diets with CSSFA and ground raw soybeans produced the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biohydrogenation; Dairy production; Fatty acids; Supplementation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001200910

Reconsidering rumen microbial consortia to enhance feed efficiency and reduce environmental impact of ruminant livestock production systems
Provedor de dados: 96
Autores: Firkins,Jeffrey Lynn.
Because cultivation-based approaches to assess rumen microbiology assess only the minority of microbial groups and can miss opportunities to assess important functions, molecular-based approaches have flourished in microbial ecology and have been adapted to the rumen. Current approaches are described herein, specifically for a robust adaptation to nutrition studies or future opportunities. These included automated profiling techniques, density gradient gel electrophoresis, and future adaption of microarray or high-throughput sequencing technologies. Based on current knowledge, a more holistic approach is needed to describe various functional groups of microbes within the context of how they influence, and are influenced by, the whole consortium...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biohydrogenation; Methanogenesis; Rumen fiber digestibility; Rumen microbial ecology.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300049

Scientific progress in ruminant production in the 1st decade of the XXI century
Provedor de dados: 96
Autores: Santos,Geraldo Tadeu dos; Silva-Kazama,Daniele Cristina da; Kazama,Ricardo; Petit,Helene V.
Scientific advances in nutrition of dairy cows in the first decade of the XXI century have occurred. This paper will review the most common additives fed to transition cows to decrease the incidence of metabolic disorders, which will be discussed separately with emphasis on their mechanisms of action, utilization and efficiency. Some changes on protein in the 2001 updated version of the Nutrient Requirements of Dairy Cattle to reach better precision of the nitrogen and amino acid requirements of lactating cows also are presented. Many of the advances in nutritional manipulation of milk fat concentration are related to fat supplementation, then the relationship between the action of rumen microbes on biohydrogenation of dietary polyunsaturated fatty acids...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Biohydrogenation; CLA; Lipids; Metabolic disorders; Protein.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300052

Production, composition and fatty acid profile of milk and butter texture of dairy cows fed ground or pelleted concentrate with sunflower and/or lignosulfonate
Provedor de dados: 96
Autores: Figueiroa,Fábio José Ferreira; De Marchi,Francilaine Eloise; Santos,Geraldo Tadeu dos; Santos,Wallacy Barbacena Rosa dos; Kazama,Daniele Cristina da Silva; Leite,Laudí Cunha; Branco,Antonio Ferriani; Damasceno,Julio Cesar.
The objective of this study was to evaluate the milk production, composition, milk fatty acid profile, butter texture and blood parameters of Holstein cows fed corn silage and concentrate containing one of the following: ground sunflower seeds; ground sunflower seeds treated with 50 g of lignosulfonate/kg of sunflower dry matter; pelleted sunflower seeds; or ground sunflower seeds pelleted and treated with 50 g of lignosulfonate/kg of sunflower dry matter. Four lactating cows were used, each with 130±28 days in lactation and a body weight of 569±63 kg. These animals were distributed in a Latin square design with four periods of 21 days each, with 14 days of adaptation and seven days of data collection. The diets were formulated to meet nutritional...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biohydrogenation; Fat; Firmness; Metabolite; Oilseed.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000008

Trans fatty acid-forming processes in foods: a review
Provedor de dados: 42
Autores: Martin,Clayton A.; Milinsk,Maria C.; Visentainer,Jesuí V.; Matsushita,Makoto; de-Souza,Nilson E.
There is a mounting concern about the intake of foods containing trans fatty acids (TFA) due to their deleterious effects on human health, mainly on the cardiovascular system. In this way, it is important to consider the processes that form TFA in foods, and the alternatives to minimize them. Among the processes that result in the formation of TFA, the hydrogenation of vegetable oils stands out for its impact on the diet of people living in industrialized countries. Other processes such as edible oil refining, meat irradiation, food frying, and biohydrogenation also contribute to increase the daily intake of TFA.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trans fatty acids; Partial hydrogenation; Deodorization; Frying; Irradiation; Biohydrogenation.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652007000200015

Trans fatty acids and their role in the milk of dairy cows
Provedor de dados: 118
Autores: Vargas-Bello-Pérez,Einar; Garnsworthy,Phil C.
E. Vargas-Bello-Pérez, and P.C. Garnsworthy. 2013. Trans fatty acids and their role in the milk of dairy cows. Cien. Inv. Agr. 40(3): 449-473. Lipids obtained from dairy products are an important part of the human diet in many countries. Approximately 75% of the total consumption of fat from ruminant animals comes from bovine milk fat. Trans fatty acids (tFA) are produced during biohydrogenation of mono- and poly-unsaturated FA in the rumen. They are mixtures of positional and geometrical isomers that are incorporated into the milk fat of lactating cows. The most important sources of tFA in the human diet are partially hydrogenated vegetable oils and ruminant milk and meat products. Ruminant-derived lipids often contain 1-8% of total fatty acids as tFA,...
Tipo: Journal article
Palavras-chave: Biohydrogenation; Dairy cows; Milk; Ruminal fermentation; Trans fatty acids.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000300001