Características bromatológicas, fermentativas e população de leveduras de silagens de cana-de-açúcar acrescidas de ureia e aditivos absorventes de umidade Fermentative and bromatological characteristics and population of yeast of sugarcane silage enriched with urea and with additive absorbent of humidity

Este trabalho foi conduzido com o objetivo de avaliar os efeitos da utilização de aditivos sobre as características fermentativas e bromatológicas e a população de leveduras da silagem de cana-de-açúcar. O experimento foi conduzido em delineamento inteiramente casualizado, com quatro repetições. Foram testadas diferentes quantidades de aditivos à cana-de-açúcar no momento da ensilagem (com base na matéria verde da forragem): 1,5% ureia; 0,5 ureia + 4% de milho; 0,5 ureia + 4% de mandioca desidratada; 1,5% de amireia e cana-de-açúcar controle. A cana-de-açúcar da variedade RB-72454, com 18 meses de rebrota, foi armazenada em silos experimentais de concreto com capacidade de 500 kg durante 180 dias. Foram avaliados os teores de matéria seca, proteína bruta, fibra em detergente neutro, fibra em detergente ácido, carboidratos não-fibrosos, cinzas, pH, nitrogênio amoniacal e lignina e a contagem de leveduras. O maior teor de matéria seca e o menor teor de fibra em detergente neutro são obtidos com a associação de ureia e milho, que melhora o padrão fermentativo na silagem.<br>The research aimed to evaluate the use of additives on the fermentative and bromatological characteristics and the population of yeast of the sugarcane silage. The experiment was carried out in a complete randomized design with four replicates. It was tested different amount of additives added to the sugarcane silage at ensiling (based on the forage fresh matter) which were the following: urea 1.5%; urea 0.5% + corn meal 4%; urea 0.5% + dehydrated cassava 4%; starea 1.5%; sugar cane only. Sugarcane variety RB-72454, at 18 months of regrowth was stored for 180 days in experimental concrete silos (500 kg capacity). Contents of ash, pH, dry matter, crude protein, neutral detergent fiber, acid detergent fiber, non fiber carbohidrate, ammonium nitrogen, lignin and count of yeasts were evaluated. The greatest contents of dry matter and the lowest contents of neutral detergent fiber are observed in the urea-corn meal treatment, which improves fermentative pattern of the silage

Fiducial and differential cross sections of Higgs boson production measured in the four-lepton decay channel in pp collisions at s=8 TeV with the ATLAS detector

AbstractMeasurements of fiducial and differential cross sections of Higgs boson production in the H→ZZ⁎→4ℓ decay channel are presented. The cross sections are determined within a fiducial phase space and corrected for detection efficiency and resolution effects. They are based on 20.3 fb−1 of pp collision data, produced at s=8 TeV centre-of-mass energy at the LHC and recorded by the ATLAS detector. The differential measurements are performed in bins of transverse momentum and rapidity of the four-lepton system, the invariant mass of the subleading lepton pair and the decay angle of the leading lepton pair with respect to the beam line in the four-lepton rest frame, as well as the number of jets and the transverse momentum of the leading jet. The measured cross sections are compared to selected theoretical calculations of the Standard Model expectations. No significant deviation from any of the tested predictions is found