Supplementation of fruit peel pellet containing phytonutrients to manipulate rumen pH, fermentation efficiency, nutrient digestibility and microbial protein synthesis

Abstract

BACKGROUND Phytonutrient pellet, a new rumen enhancer, was formulated from various tropical fruit peels containing phytonutrients (condensed tannins and saponins) and named MARABAC. To substantiate the MARABAC supplementation effect, it was supplemented with low and high levels of concentrate supplementation in a 4 × 4 Latin square design with a 2 × 2 factorial arrangement using beef cattle. Based on this investigation, interesting findings were highlighted and are reported herein. RESULTS The high level of concentrate supplementation (HCS) reduced rumen pH remarkably, but was buffered and enhanced by MARABAC supplementation. Rumen pH was reduced to 5.74 at 8 h, post feeding upon receiving HCS, and was buffered back to 6.19 with MARABAC supplementation. The supplementation exhibited an additional pronounced (P < 0.01) effect on improving nutrient digestibility and efficiency of microbial nitrogen supply, mitigating rumen methane production and reducing protozoal population. Rumen and fermentation end‐products, especially propionate production, were enhanced (P < 0.05), while rumen methane production was subsequently mitigated (P < 0.01). CONCLUSION MARABAC is a new promising dietary rumen enhancer for future replacement of chemicals and antibiotics used to enhance the rumen fermentation. Nevertheless, more in vivo feeding trials should be further conducted to elucidate the insight impacts. © 2021 Society of Chemical Industry

Influence of bamboo grass (Tiliacora triandra, Diels) pellet supplementation on in vitro fermentation and methane mitigation

“…Rumen protozoa and methanogens were found to have a close relationship 34 . As currently reported by Wanapat et al ., 6 the PTN in the pellet had a more pronounced impact in promoting rumen fermentation by increasing rumen C 3 production, decreasing protozoal population and CH 4 production, respectively.…”

“…7 The presence of the PTNs in feed diets has been reported to improve rumen fermentation and dramatically reduce rumen CH 4 production. 6 Suriyapha et al 7 also confirmed that the addition of bamboo grass at 150 g of dry matter (DM) intake enhanced rumen fermentation while reduced CH 4 production in swamp buffalo. Nevertheless, details of supplementation level in different ratio of roughage to concentrate (R:C) has not yet been investigated.…”

“…Patra and Saxena 5 demonstrated how PTN could reduce rumen methanogens as well as protozoal population. Recently, Wanapat et al 6 . have provided more details and possible mode of actions of PTN on rumen ecological activities.…”

“…Bamboo grass is rich in crude protein (CP), PTNs namely CTs, SPs and minerals to modify the rumen microbiome and fermentation process to increase the final yield of the fermentation process, in particular increasing propionic acid (C 3 ) and reducing CH 4 production 7 . The presence of the PTNs in feed diets has been reported to improve rumen fermentation and dramatically reduce rumen CH 4 production 6 . Suriyapha et al 7 .…”

Sodium nitrate has no detrimental effect on milk fatty acid profile and rumen bacterial population in water buffaloes

“…In contrast, some studies found that nitrate caused an increase in ruminal pH when using orchard grass forage as the substrate in vitro (Takahashi et al 1989 ) or sheep (Nolan et al 2010 ). Both type and level of carbohydrate supplementation can contribute to the dynamics of rumen pH (Wanapat et al 2021 ).…”