Effects of Probiotics and Wheat Bran Supplementation of Broiler Diets on the Ammonia Emission from Excreta

Abstract

Ammonia emission is a concern for the poultry industry from both environmental and animal welfare points of view. The objective of this research was to determine whether probiotics or wheat bran supplementation of broiler diets can modify the N composition of the excreta and the dynamics of ammonia volatilisation emission from the manure. A total of 120-day-old Ross 308 broiler chickens were fed six different diets. The treatments included a corn and soybean meal-based control diet (C) and diets containing wheat bran (WB). Both diets were fed alone and with supplementation of a lactic acid (Lactobacillus farciminis, LAB) and a butyric acid (Clostridium butyricum, BAB) producing bacterial strain. Treatment BAB had a significant effect on the dry matter content of the excreta and both probiotics decreased the amount of excreted uric acid. Treatment WB resulted in a significantly lower NH+4-N concentration of excreta and a tendency toward reduced uric acid content. Treatment LAB reduced the urinary N ratio of excreta. Among dietary treatments, WB resulted in the highest urease producing cell numbers in the excreta, but this difference was not significant. Based on our results, similar to pigs, the soluble fibre fraction of poultry diets can also modify the urinary to faecal N ratio of the excreta.

Dephytinization of wheat and rice bran by cross‐linked enzyme aggregates of Mucor indicus phytase: a viable prospect for food and feed industries

“…The regression model was supported by the R 2 value and the adjusted R 2 value (0.99) for phytase activity recovery suggesting the robustness of the model. The analytical concordance between experimental outcomes and predicted results was examined using R 2 .…”

“…Incorporating insoluble dietary fiber into diets could be a viable way to maximize the feed conversion ratio 1 . Brans, especially rice and wheat, contain a large amount of insoluble dietary fiber and play a pivotal role in regulating the metabolism, being associated with the adsorption of nutrients as well as improving gut homeostasis 2 . The feed formulations recommend supplementing bran (10–20%), resulting in improved growth performance and a better feed conversion ratio 3 .…”

“…1 Brans, especially rice and wheat, contain a large amount of insoluble dietary fiber and play a pivotal role in regulating the metabolism, being associated with the adsorption of nutrients as well as improving gut homeostasis. 2 The feed formulations recommend supplementing bran (10-20%), resulting in improved growth performance and a better feed conversion ratio. 3 However, certain studies suggested that bran contains anti-nutritional factors, namely phytate, chelating 60-70% of total phosphorus.…”

Effects of Key Farm Management Practices on Pullets Welfare—A Review

“…Therefore, addition of essential amino acids (such as lysine and methionine) to substitute part of the protein, is a practical approach for reducing the protein level of diets. Furthermore, the addition of feed additives (probiotics) [104], wheat bran [105], and enzymes [106] (phytase, xylanase, and proteases) can promote feed digestibility.…”

Probiotics beyond the farm: Benefits, costs, and considerations of using antibiotic alternatives in livestock

“…Moreover, the value of probiotics is beginning to expand beyond their common mechanisms. Researchers now recognize their ability to mediate viral, fungal, and parasitic infections (Hsu et al, 2018;Saracino et al, 2021;Zuckermann et al, 2022), mitigate the negative effects of heat stress (Jiang et al, 2021), and reduce environmental ammonia and methane emissions generated from livestock and poultry manure (Prenafeta-Boldúet al, 2017;Such et al, 2021). Probiotic strains with these capabilities may then be subsequently applied as fertilizer in adjacent crop fields where they might even improve terrestrial and aquatic ecosystem processes as described earlier.…”