Efficacy of Saccharomyces cerevisiae NBRC 0203, Lactobacillus plantarum NBRC 3070 and Lactobacillus casei NBRC 3425 as a technological additive (silage additive) for all animal species.

The product under assessment is a preparation containing single strains of Saccharomyces cerevisiae, Lactobacillus plantarum and Lactobacillus casei to be used as a technological additive to improve the ensiling process. EFSA has been previously requested by the European Commission to evaluate this product. The safety of the additive for consumers, users, the environment and target animals was established at that time. There was, evidence for improved aerobic stability in forage materials with dry matter contents varying between 30% and 70%. Fluorescence in situ hybridisation methods were also introduced and a different culture medium to better characterise the additive but the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP Panel) remains unable to identify a minimum specification for the product or a minimum effective dose.

Efficacy of Saccharomyces cerevisiae (NBRC 0203), Lactobacillus plantarum (NBRC 3070) and Lactobacillus casei (NBRC 3425) as a silage additive for all species.

The product under assessment is a preparation containing single strains of Saccharomyces cerevisiae, Lactobacillus plantarum and Lactobacillus casei to be used as a technological additive to improve the ensiling process. EFSA has been previously requested by the European Commission to evaluate this product. The safety of the additive for consumers, users, the environment and target animals was established at that time. Results from a number of in vitro ensiling studies made using a variety of grass forage and maize samples were also presented. These efficacy studies showed no evidence that the additive had the potential to conserve nutrients and so improve the production of silage. There was, however, evidence for improved aerobic stability once the ensiled material was exposed to air, but because of the apparent variability in the additive mix, an effective dose could not be established. The applicant has now provided a number of additional ensiling studies confirming that the additive when applied at 80 mL/tonne significantly increases the aerobic stability of ensiled material after exposure to air. This was shown in forage materials with dry matter contents varying between 30% and 70%. Fluorescence in situ hybridisation methods were also introduced to better characterise the additive. Although this method allows individual strains to be separately enumerated, bacterial and yeast numbers are expressed as cell numbers/mL and include counts of both viable and non-viable cells. As a result values cannot be equated to colony-forming units, the basis of any authorisation and the functional properties of the additive. Consequently, the Panel remains unable to identify a minimum specification for the product or a minimum effective dose.

Safety and efficacy of Lactobacillus casei DSM 28872 as a silage additive for all animal species.

Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed was asked to deliver a scientific opinion on the safety and efficacy of a strain of Lactobacillus casei when used as a technological additive intended to improve ensiling at a proposed application rate of 1 × 108 CFU (when used alone) or 5 × 107 CFU (when used in combination) kg/fresh matter. The species L. casei is considered by EFSA to be suitable for the qualified presumption of safety approach to safety assessment and not to require specific demonstration of safety other than the absence of resistance to antibiotics of human and veterinary significance. As the identity of the strain was clearly established and as no antibiotic resistance was detected, the use of the strain in the production of silage is presumed safe for livestock species, consumers of products from animals fed treated silage and the environment. In the absence of data, no conclusion can be drawn on the skin and eye irritancy of the additive. The additive should be considered to have the potential to be a respiratory sensitiser. Five studies with laboratory-scale silos were made using forage of differing water-soluble carbohydrate content. Replicate silos containing forages treated at the proposed application rate were compared to identical silos containing the same but untreated forage. The mini-silos were stored for 90 days at 20-24°C. At the end of the ensiling period, the content of the silos was analysed and dry matter losses determined. Results showed that the L. casei strain applied at a minimum dose of 5 × 107 CFU/kg has the potential to improve the production of silage from easy and moderately difficult to ensile forage species by reducing dry matter loss and enhancing protein preservation.

Análise de leite de búfala fermentado por Lactobacillus casei e suplementado com Bifidobacterium longum / Assessment of fermented buffalo milk for Lactobacillus casei and supply with Bifidobacterium longum

Elaborou-se leite de búfala fermentado por Lactobacillus casei utilizando leite desnatado, adicionado de 12,00 de açúcar e fermentado por 24 horas. Após fermentação o produto foi suplementado com Bifidobacterium ongum e estocado durante 30 dias a 5 e 10ºC, sendo então avaliados os parâmetros de acidez, pH e viabilidade de L.casei e de B. longum. Realizou-se a análise de composição nutricional, cálculo do valor calórico e análise sensorial do produto saborizado. O leite fermentado suplementado com B. longum, apresentou acidez inicial de 0,69 e pH de 4,86. A viabilidade de L. casei inicial foi 11,00 log UFC/mL e de B. longum 10,46 log UFC/mL. Após 30 dias de estocagem refrigerada, a acidez e o pH estavam adequados e a viabilidade de L. casei e de B. longum ficou acima de 9,00 log UFC/mL. A análise da composição nutricional resultou nos valores (): proteína 3,63, carboidrato 21,86, gordura 0,10, resíduo mineral fixo 0,56, umidade 73,85 e matéria seca 26,15, com valor calórico de 103 Kcal/100g. Não houve diferença sifnificativa na preferência e na aceitação das amostras de diferentes sabores, sendo que o produto apresentou boa aceitação pela escala hedônica

It was elaborated fermented buffalo milk for L. casei utilizing skimmed milk added with 12,00% sugar andfermented by 24 hours. After fermentation, the product was supply with B. longum and storage during30 days at 5 and 10° C, being evaluated the acidity, pH and viability of L. casei and B. longum parameters.Were does the nutritional composition, calculate the caloric value and sensorial analysis of the flavoredproduct. The fermented milk presented initial acidity 0.69% and pH 4.86. The L. casei initial viability was11,00 log CFU/mL and B. longum 10,46 log CFU/mL. After storage of 30 days, the acidity and pH wereadequate and the L. casei and B. longum viability was above 9.00 log CFU/mL. The composition analysisresulted (%) protein 3.63, carbohydrate 21.86, fat 0.10, ashes 0.56, wet 73.85 and dry substance 26.15,with caloric value 103 Kcal/100 g. There wasn't significant difference to preference and acceptancebetween flavored samples, and have good acceptation by hedonic scale