11 documents found, page 1 of 2
Short-term changes in plasma and milk fatty acid profiles in cows fed chopped e...
Lopes, Fernando César Ferraz; Ribeiro, Carlos Gustavo Santos; Rodriguez, Norberto Mario; Gama, Marco Antônio Sundfeld da; Morenz, Mirton José FrotaThe study was carried out in a randomized block design, in a 2 x 2 factorial arrangement, with the aim to evaluating during 21 days the short-term changes in plasma and milk fatty acid (FA) profile in Holstein x Gyr cows (444±84 kg; 75±31 days in milk; 15.4±4.8 kg day-1 of milk) fed 600 g kg-1 DM chopped elephant grass-based diets supplemented with 45 g kg-1 DM sunflower oil (SO). Two types of SO were evaluated...
Ruminal fermentation and degradation, kinetic flow of digesta and milk fatty ac...
Costa, Dayana Alves da; Lopes, Fernando César Ferraz; Rebouças, Gesiane Moura Neves; Carneiro, Jailton da Costa; Gama, Marco Antônio Sundfeld daThe aim of this study was to evaluate the ruminal fermentation and degradation parameters, the kinetic flow of digesta in the gastrointestinal tract, and the milk fatty acid (FA) profile in Holstein x Gyr cows fed 59% sugarcane silage-based diets with 0% (control), 5%, 10% and 15% whole cottonseed (WCS) on a dry matter (DM) basis. Four rumen-cannulated cows with an average milk yield of 14.4±3.3 kg day-1 and 85...
Ruminal parameters and fatty acid composition of omasal digesta and milk in cow...
Lopes, Fernando César Ferraz; Souza, Shirley Motta de; Valadares Filho, Sebastião de Campos; Gama, Marco Antônio Sundfeld da; Rennó, Luciana NavajasThis study evaluates the intake and digestion of nutrients, parameters of rumen fermentation and degradation, omasal digesta and milk fatty acid composition, productive performance, and the concentration of serum metabolites in cows fed 600 g kg-1 sugarcane-based diets containing 0 (control), 15, 30, and 45 g kg-1 sunflower oil (SO) on a dry matter (DM) basis. Four rumen-cannulated Holstein x Gyr cows yielding ...
Milk fatty acid composition in Holstein x Gyr dairy cows fed chopped elephantgr...
Lopes, Fernando César Ferraz; Ribeiro, Carlos Gustavo Santos; Rodriguez, Norberto Mario; Gama, Marco Antônio Sundfeld da; Morenz, Mirton José FrotaTwo experiments were carried out in a 2 x 2 factorial arrangement with the objective of evaluating two methods of concentrate feeding for Holstein x Gyr cows fed 600 g kg-1 chopped elephantgrass-based diets supplemented at 45 g kg-1 DM with two types of sunflower oil (SO). The types of SO differed in the levels of oleic and linoleic fatty acids (FAs): high oleic/low linoleic acid – HO (73 and 10 g 100 g-1 FA, r...
Milk fatty acid composition of dairy goats fed increasing levels of Flemingia m...
Oiticica, Isabel das Neves; Fonseca, Carlos Elysio Moreira da; Lopes, Fernando César Ferraz; Morenz, Mirton José Frota; Gama, Marco Antônio Sundfeld daThe effect of dietary inclusion of increasing levels of Flemingia macrophylla hay on the yield, composition and fatty acid profile of milk from Saanen x Boer goats was evaluated. The diets were composed of 40% concentrate and 60% forage. The treatments were defined by the level of inclusion of Flemingia hay in the diet (0, 80, 160, 240 and 320 g kg-1 dry matter) in replacement of the Cynodon dactylon cv. Tifton...
Ruminal metabolic parameters and milk fatty acid profile of cows grazing Marand...
Mourthé, Mário Henrique França; Lopes, Fernando César Ferraz; Reis, Ronaldo Braga; Gama, Marco Antônio Sundfeld da; Morenz, Mirton José FrotaThe goal of this study was to evaluate the ruminal metabolic parameters and milk fatty acid composition of cows managed under continuous grazing on Marandu grass. Four rumen-cannulated Holstein x Gyr cows with an average milk yield of 21±2 kg day-1 and 79±16 days in milk were used in a 4 x 4 Latin Square design. Each cow received 6 kg day-1 of a concentrate formulated with 0 (control), 1.3, 2.6 or 3.9 kg of roa...
Milk fatty acid composition of Holstein x Gyr dairy cows fed sugarcane-based di...
Souza, Shirley Motta de; Lopes, Fernando César Ferraz; Valadares Filho, Sebastião de Campos; Gama, Marco Antônio Sundfeld da; Rennó, Luciana NavajasSugarcane is a strategic roughage source for milk production in the tropics, and its supplementation with plant oils offers great potential for obtaining milk enriched with beneficial fatty acids, such as oleic (cis-9 C18:1), vaccenic (trans-11 C18:1), and rumenic (cis-9, trans-11 CLA) acids. The aim of this study was to evaluate the milk fatty acid composition of cows fed 60% chopped sugarcane-based diets cont...
Butter fatty acid composition as a function of soybean oil supplementation and ...
Lopes, Fernando César Ferraz; Ribeiro, Carlos Gustavo Santos; Rodriguez, Norberto Mario; Gama, Marco Antônio Sundfeld da; Morenz, Mirton José FrotaThe aim of this study was to evaluate the performance of cows fed with a total mixed ration composed of elephant grass and a concentrate containing 0.0% (control), 1.5%, 3.0% or 4.5% soybean oil on a dry matter basis. The effect of milking time (morning versus afternoon) on butter fatty acid composition was also evaluated. Twelve multiparous Holstein x Gyr cows with an average milk production of 18.0±4.6 kg day...
Ruminal fermentation and degradation, kinetic flow of the digesta and milk fatt...
Ribeiro, Carlos Gustavo Santos; Lopes, Fernando César Ferraz; Rodriguez, Norberto Mario; Gama, Marco Antônio Sundfeld da; Morenz, Mirton José FrotaThe aim of this study was to evaluate the ruminal parameters of fermentation and degradation, kinetic flow of rumen digesta, and milk fatty acid composition of cows fed 52% chopped elephantgrass-based diets containing 0.0% (control), 1.5%, 3.0% and 4.5% soybean oil (SO) on a dry matter (DM) basis. Four rumen-cannulated Holstein x Gyr dairy cows with an average milk production of 15.6 ± 3.0 kg day-1 and 90 ± 25 ...
Fatty acid composition of milk from Holstein x Gyr cows grazing on marandu gras...
Silva, Bárbara Cardoso da Mata e; Rodriguez, Norberto Mario; Morenz, Mirton José Frota; Gomide, Carlos Augusto de Miranda; Martins, Carlos EugênioThe inclusion of plant oils in the diets of grazing cows represents a promising nutritional strategy for the production of milk naturally enriched with bioactive compounds, such as rumenic (cis-9, trans-11 CLA), vaccenic (trans-11 C18:1) and oleic (cis-9 C18:1) acids. The aim of this study was to evaluate the effect of dietary supplementation with sunflower oil (SO) on the fatty acid (FA) composition of milk fr...