Characterization of Tifton 85 bermudagrass haylage with different layers of polyethylene film and storage time

Abstract

ObjectiveThe objective was to characterize the fermentative and microbiological profile of Tifton 85 bermudagrass haylage with different layers of polyethylene film and storage time.MethodsThe experimental design consisted of a randomized block design with four and six wrapping layers (100 and 150 microns in total. respectively) allocated in the main plots, through repeated measures analysis (30, 60, and 90 days of storage) with four replicates.ResultsThe storage time and number of wrapping layers did not show changes in the population of Clostridium and lactic acid bacteria. A decrease was observed in the enterobacteria population with an increase in the storage period in the two wrapping layers studied. Upon opening of the haylage at 30 days, the population of Bacillus was lower in haylages made with six layers of wrapping (3.63 log colony forming units/g). No growth of Listeria sp. or Salmonella sp. was observed during the experimental period. The fungal genera with a greater occurrence were Penicillium sp. and Fusarium sp. The following mycotoxins were not detected: ochratoxin A, fumonisins, and zearalenone. Relative to the organic butyric, propionic, and acetic acids, the haylages presented a low concentration of lactic acid; this may have prevented a drop in the pH, which was high when the silos were opened (5.4). The levels of ammoniacal nitrogen and soluble carbohydrates presented no variation among the number of wrapping layers, with an overall average of 35.55 and 38.04 g/kg.ConclusionTifton 85 bermudagrass haylage wrapped with four and six layers presented adequate fermentation and microbiological characteristics in the evaluated periods.

Haylage: A Forage Conservation Alternative

“…High levels of acetic acid occur due to the presence of heterolactic bacteria and indicate undesirable changes during fermentation, causing a reduction in silage consumption by the animals (NATH et al, 2018). Müller (2011) observed levels of 7.6 and 2.5 g kg -1 in the dry matter for lactic acid and acetic acid, 0.026 for NH 3 of haylage total nitrogen preserved at pH 6.10 and did not observe biological importance for the digestive measures performed.…”

Expansion of hay production and marketing in Brazil

“…In spring/summer, fine-stemmed forage such as Tifton 85 Bermudagrass, when cut in the morning after dew, is baled and wrapped in the afternoon, after approximately 5-6 h of exposure to the sun (Nath et al, 2018).…”

Avaliação Da Facilidade Da Intubação Endotraqueal Em Gatas Premedicadas Ou Não Com Acepromazina E Induzidas Com Propofol Isolado Ou Associado Ao Diazepam

“…A diminuição das áreas agrícolas e a crescente demanda por oferta de alimento faz com que o profissional em Zootecnia esteja numa posição de destaque dentro do contexto socioeconômico, tendo como resultado a demanda por produção agrícola rápida, lucrativa e de forma eficiente. (NATH et al, 2018). Porém, para que essas condições sejam alcançadas, a forrageira deve apresentar quantidades adequadas de substrato fermentescível, poder tampão relativamente reduzido e porcentagem de matéria seca acima de 300 g kg -1 .…”