Luis Felipe Prada e Silva

• Abstract

  The low fiber digestibility of tropical forages, more specifically, the rapid decline in nutritional quality with advanced maturity is an important aspect that limits weight gain and productivity of beef cattle. Improving the efficiency of roughages with greater fiber digestibility can contribute to the increase of the Brazilian livestock productivity. Therefore, it is our objective to: 1…

  Molecular mechanism of lignification on tropical grasses and the effect of altering fiber lignification on animal performance, AP.R

• Abstract

  Fiber digestibility is an important factor regulating DMI in ruminants. Additionally, the ensiling process can also affect digestibility and chemical composition of the forage. The objective of this study was to investigate effects of sugarcane NDF digestibility (NDFD) and conservation method on intake, rumen kinetics, and ruminal ecosystem of steers. Eight ruminally cannulated Nellore st…

  Effect of fiber digestibility and conservation method on feed intake and ruminal ecosystem of growing steers, PUB.ART

• Abstract

  The amount of fat in the carcass has been proposed as a regulator of initiation of puberty in cattle. In order to test if changes in energy intake and in circulating leptin concentration are each capable of altering age, BW and body composition at puberty, thirty-six prepubertal Nellore heifers, 18 to 20 months-old, 275.8 ± 17.2kg BW and BCS of 5 ± 0.5 (1 to 9 scale) were randomly assigne…

  Effect of chronic infusion of leptin and nutrition on sexual maturation of zebu heifers, PUB.ART

(Only some records are available in English at this moment)

• Abstract

  The lower fiber digestibility in tropical pastures, is the main obstacle to increasing animal performance in these systems. The use of concentrated supplements for grazing animals during the rainy season, make up the deficiencies in the quality of forage by optimizing the average daily gain. Different doses of Saccharomyces cerevisiae, has been fed to ruminants, and can cause beneficial e…

  Effect of supplementing with with different doses probiotics on fiber digestibility and rumen ecosystem of growing cattle receiving two levels of concentrate, BP.MS

• Abstract

  Cell wall digestibility is the main factor limiting the nutritive value of forages. The identification of parameters to evaluate the quality of the fiber that actually has an impact on animal performance is of great importance to the breeding programs of sugarcane. The objective of this study is to evaluate the effect of changing fiber digestibility by the time of harvest and by genotype …

  Effect of altering fiber digestibility by time of harvest and by genotype on rumen ecosystem of steers fed sugarcane silage, BP.IC

• Abstract

  Beef cattle finishing diets have high energy contents, which represents a challenge for the stability of ruminal ecosystem. With the increasing popularity of sugarcane silage by farmers, it becomes essential to understand the effect of supplementing with different levels and sources of non-fiber carbohydrates (NFC) on rumen metabolism and animal performance. The objective of this study is…

  Effect of level and sources of non-fiber carbohydrates on rumen kinetics of finishing bulls, BP.IC

(Only some records are available in English at this moment)

• Abstract

  Distillers grains have been an economical forage supplement in US beef production systems because they have protein and energy values that are greater than corn, but have been priced less than corn. Expanded international exports of distillers grains has inflated the price relative to corn so that the cost per unit of energy is no as favorable as it once was. Corn is known to negatively i…

  Effects of displacing distillers grains with corn in high forage diets, BE.EP.DR

• Abstract

  An important management goal for high yielding dairy herds is the maximization of dry matter intake. Cows in early lactation tend to be in negative energy balance, and energy status affects health and reproductive performance as well as milk yield. Physical fill is considered to be one of the factors that regulates feed intake of dairy cows. Fibrous fractions of feeds have a greater effec…

  Evaluation of the importance of the digestibility of neutral detergent fiber from forage: effects on dry matter intake and milk yield of dairy cows, BE.EP.DR

• Abstract

  Forage grasses, especially tropical C4 grasses, have low levels of water-soluble carbohydrates, therefore leading to low efficiency of microbial protein production, and below the adequate level of fermentable organic matter that would be used by ruminants. Furthermore, the low level of soluble carbohydrates is prejudicial for conservation of forages as silage. Fructans are water-soluble o…

  Molecular genetics of fructan metabolism in grasses, BE.PQ

(Only some records are available in English at this moment)