Effect of rehydration with whey and inoculation with Lactobacillus plantarum and Propionibacterium acidipropionici on the chemical composition, microbiological dynamics, and fermentative losses of corn grain silage

Abstract

The objective of this study was to compare rehydrated corn grain silages using water or whey and inoculated (Lactobacillus plantarum and Propionibacterium acidipropionici) or not. We also verified whether rehydration with whey associated with the bacterial inoculant improves material conservation. The treatments were as follows: silages rehydrated with water without inoculant (SWa); silages rehydrated with water and inoculated (SWaI); silages rehydrated with whey without inoculant (SWe); silages rehydrated with whey and inoculated (SWeI). A completely randomized design was used, with three replications, treatments in a 2 × 2 factorial scheme (RE: rehydration with water or whey, and IN: inoculation or addition of water without chlorine), during the following storage periods (T): 0, 4, 8, 16, 32, and 64 days. There was an RE x IN x T interaction (P < 0.001) for dry matter (DM), with lower values over time for SWe and higher values in SWeI. An interaction between RE x IN (P < 0.001) and IN x T (P < 0.001) was observed for pH, with higher values for SWe at 64 days of storage and a reduction from the first days of ensiling for SWaI and SWeI. The microbiological variables showed an RE x IN x T interaction (P < 0.001), with the highest counts of lactic acid bacteria for SWaI and SWeI up to 8 days of storage and subsequent higher counts in SWa and SWe. Higher counts were obtained in SWe. For the variables of fermentative losses, there was an RE x IN x T interaction (P < 0.001), with SWeI showing lower losses. The inoculation associated with whey for rehydration of corn grain improved the fermentation profile of the silage, with lower pH values and reduced losses.

Effect of Different Additives on the Quality of Rehydrated Corn Grain Silage: A Systematic Review

“…Pádua et al [93], evaluating the effects of urea doses on potato grass hay (Paspalum Notatum), observed that the CP content increased with increasing levels of urea used in the study. Similarly, Sousa et al [44], evaluating the chemical composition of corn straw ammoniated with urea added at 0, 2, 4, 6, and 8% of total DM, observed an increase in CP content with the inclusion of doses of urea with values ranging from 5.36 to 11.2 (%DM).…”

“…Although it is not possible to compare NDF content before and after ensiling in this review because there are no data on the chemical composition of the mass before ensiling, previous studies, such as that of Rezende et al [42], indicate greater reductions in NDF in silage when whey is used to rehydrate corn grains when compared to water. However, Sousa et al [44] and Cruz et al [45] found different effects of whey compared to water, making it difficult to evaluate this additive's intrinsic effect in reducing the silage's NDF content.…”

“…Chemical composition, fermentation parameters, and aerobic stability Souza et al [44] Effect of rehydration with whey and inoculation with Lactobacillus plantarum and Propionibacterium acidipropionici on the chemical composition, microbiological dynamics, and fermentative losses of corn grain silage Chemical composition and fermentation parameters Cruz et al [45] Fermentative losses and chemical composition and in vitro digestibility of corn grain silage rehydrated with water or acid whey combined with bacterial-enzymatic inoculant Chemical composition, fermentation parameters, and DM in vitro digestibility Menezes et al [46] Effects of different moist orange pulp inclusions in the corn grain rehydration for silage production on chemical composition, fermentation, aerobic stability, microbiological profile, and losses Chemical composition, fermentation parameters, aerobic stability, and DM in vitro digestibility Jungues et al [47] Short communication: Influence of various proteolytic sources during fermentation of reconstituted corn grain silages Chemical composition and fermentation parameters Wang et al [48] Nutritional evaluation of wet brewers' grains as substitute for common vetch in ensiled total mixed ration.…”