Consumo, produção e composição do leite de vacas alimentadas com óleo de soja e diferentes fontes de carboidratos na dieta

Eifert, Eduardo da Costa; Lana, Rogério de Paula; Lanna, Dante Pazzanese Duarte; Leopoldino, Webel Machado; Oliveira, Marcus Vinícius Morais de; Arcuri, Pedro Braga; Campos, José Maurício de Souza; Leão, Maria Ignêz; Filho, Sebastião de Campos Valadares

doi:10.1590/s1516-35982006000100027

Cited by 20 publications

(20 citation statements)

References 24 publications

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“…Eifert et al (2006) avaliaram a associação de 2,25% de óleo de soja a diferentes fontes de carboidratos, milho, farelo de trigo e polpa cítrica, na alimentação de vacas e também não observaram efeito das fontes de carboidratos e da inclusão de óleo sobre a digestibilidade da PB. Ausência de efeito da inclusão de óleo às dietas sobre a digestibilidade da PB, em ovinos foi verificado na literatura por Kucuk, Hess e Rule (2004) e por Maia et al (2012).…”

Section: Variável (%)unclassified

“…As dietas dos ruminantes possuem geralmente baixo teor de lipídios e sua inclusão tem por objetivo aumentar a densidade energética da dieta e a participação de determinados ácidos graxos benéficos à saúde humana no leite e na carne (EIFERT et al, 2006). No entanto, quando em doses elevadas, os lipídios podem alterar a fermentação microbiana e promover redução na digestão da matéria orgânica e da fibra (IKWUEGBU; SUTTON, 1982).…”

Section: Introductionunclassified

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Consumo, digestibilidade e balanço de nitrogênio de cordeiros alimentados com alto teor de amido ou fibra solúvel em detergente neutro associados ao óleo de girassol

2014

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The aim of this study was to evaluate the effect of different carbohydrate sources associated with sunflower oil on intake, digestibility of nutrients and nitrogen balance in diets of lambs. Twenty lambs were used, assigned in a completely randomized design with a 2 x 2 factorial arrangement of treatments with two sources of neutral detergent soluble carbohydrate, starch and neutral detergent soluble fiber, with and without the inclusion of 4.2% sunflower oil. The dry matter intake was not affected by carbohydrate sources and the inclusion of oil. Diets with a high percentage of starch provided higher 1 Parte da tese de doutorado da primeira autora, financiada pela FAPESP. digestibility of dry matter, starch and ether extract. The different sources of carbohydrates had no interference on digestibility of organic matter, crude protein, neutral detergent soluble fiber, nonfiber carbohydrates, neutral detergent fiber, hemicellulose and acid detergent fiber. The addition of oil in the diets increased the digestibility of ether extract. The combination of 4.2% oil in the diet high in soluble neutral detergent fiber had no influence on the nutrient digestibility, otherwise, the addition of oil at high starch diet caused a significant reduction in the digestibility of organic matter, neutral detergent fiber, hemicellulose and nonfiber carbohydrates. The quantities of nitrogen intake, absorbed and retained, did not differ as sources of carbohydrates and oil inclusion in the diet. The association of 4.2 % sunflower oil to the different sources of carbohydrates in the diet does not affect consumption and nitrogen metabolism in lambs. The addition of 4.2 % oil in the diet with high starch (28% of DM diet) promotes reduction in digestibility of organic matter, of fibrous and nonfibrous carbohydrate in the diet.

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Section: Variável (%)unclassified

Section: Introductionunclassified

Consumo, digestibilidade e balanço de nitrogênio de cordeiros alimentados com alto teor de amido ou fibra solúvel em detergente neutro associados ao óleo de girassol

2014

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“…High unsaturated lipid supplementation can also reduce the degradability of fiber by microbes (Harvatine & Allen, 2006) and ammonia production (Eifert et al, 2006). Thus, when supplying unsaturated lipids to ruminants, the effects on the ingestion and digestion of nutrients must be evaluated to achieve the desired production level (Jenkins & McGuire, 2006;Relling & Reynolds, 2007).…”

Section: Introductionmentioning

confidence: 99%

Rumen fermentation and rumen microbes in Nellore steers receiving diets with different lipid contents

et al. 2013

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-The objective of the present study was to evaluate the effects of dietary lipid content (20, 40 and 60 g/kg dry matter) on intake, total and ruminal apparent digestibility of dry matter (DM), nutrient digestibility, rumen fermentation parameters, microbial synthesis efficiency and rumen microbial content of beef cattle. Nine cannulated steers at 6 months of age with initial body weight of 232±35 kg were used in a triplicate 3 × 3 Latin square design. The results indicated that the total intake and digestibility of DM, organic matter (OM), gross energy (GE), neutral detergent fiber (NDF) and acid detergent fiber (ADF) were not affected by the lipid content of the diet. However, the lowest lipid content diet reduced the total digestibility of crude protein (CP) and total carbohydrate linearly compared with the highest lipid diet. In contrast, when steers were fed a diet containing 20 g lipids/kg of DM, the concentration of ammonia in the rumen decreased quadratically relative to the other diets. Ruminal pH was not affected by the interaction of treatment and sampling time; however, the rumen pH decreased quadratically in animals that received the highest dietary lipid content (60 g/kg) compared with animals that received 20 and 40 g lipids/kg of DM. The rumen concentrations of volatile fatty acids, propionate, and butyrate and the acetate/propionate ratio were affected by the dietary lipid content. However, the microbial population, microbial N flow, and efficiency of synthesis were not affected by dietary lipid content. Overall, an increase in the lipid content of the diet of Nellore steers resulted in similar digestive profiles and fermentation conditions.

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“…According to Eifert et al (2006), the lactose is the primary and most important osmotic component of the milk, since it is associated with secretion of water and the volume of the milk produced. It is a component depending on glucose in its synthesis and, when it occurs at lower proportion in milk, may suggest insufficiency of glucose in the animal, as a resulting tendency to lower milk production.…”

Section: Resultsmentioning

confidence: 99%

Procedure for collecting milk sample and the number of milkings in relation to chemical composition and somatic cells of the fresh milk

Jakeline¹,

Marco²,

Thiago³

et al. 2015

Afr. J. Agric. Res.

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This study was carried out to determine which system of milkings and sampling methodology presenting chemical composition results safer and lower variation of the results. In Properties I and II, the fresh milk samples were collected in 40 ml flasks containing bronopol in order to compare the chemical composition of the milk, as adopting two sample collection methods, that is two and three milkings. In order to compare the chemical composition of milk and SCC, between two sampling methodologies, in two daily milkings (Property I) and three daily milkings (Property II), fresh milk samples were collected randomly totaling 300 samples on the property I and 312 samples on the property II. The milk chemical components were determined through analytical principle that is based on differential absorption of infrared waves by components of the milk. By analyzing the treatments, experimental design was used entirely randomized and averages were compared by Tukey test using the statistical program SISVAR (statistical analysis system). When evaluating the data obtained through variation coefficient (VC), the occurrence of experimental was observed, since most results showed low variation. However the distinct procedures for sampling of the fresh milk may present varied levels of the chemical composition and SCC, therefore overestimating or underestimating the values of the milk composition, when samples are collected at different times of the day and different number of milkings.

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Consumo, produção e composição do leite de vacas alimentadas com óleo de soja e diferentes fontes de carboidratos na dieta

Cited by 20 publications

References 24 publications

Consumo, digestibilidade e balanço de nitrogênio de cordeiros alimentados com alto teor de amido ou fibra solúvel em detergente neutro associados ao óleo de girassol

Consumo, digestibilidade e balanço de nitrogênio de cordeiros alimentados com alto teor de amido ou fibra solúvel em detergente neutro associados ao óleo de girassol

Rumen fermentation and rumen microbes in Nellore steers receiving diets with different lipid contents

Procedure for collecting milk sample and the number of milkings in relation to chemical composition and somatic cells of the fresh milk

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