Effects of rumen-protected folic acid and branched-chain volatile fatty acids supplementation on lactation performance, ruminal fermentation, nutrient digestion and blood metabolites in dairy cows

Wang, C.; Liu, Q.; Guo, Gang; Huo, Weiguang; Zhang, Y.L; Pei, Caixia; Zhang, S.L

doi:10.1016/j.anifeedsci.2018.11.015

Cited by 30 publications

(22 citation statements)

References 29 publications

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“…found that milk and milk protein yields increased with FA supplementation. The positive response of nutrient digestibility was consistent with the higher ruminal total VFA, and was also observed by previous study . Dietary RPFA addition altered the ruminal fermentation pattern to more acetate production, as indicated by the higher acetate‐to‐propionate ratio.…”

Section: Discussionsupporting

confidence: 90%

“…The positive response of nutrient digestibility was consistent with the higher ruminal total VFA, and was also observed by previous study. 8 Dietary RPFA addition altered the ruminal fermentation pattern to more acetate production, as indicated by the higher acetate-to-propionate ratio. The increased acetate proportion was due to the higher activity of cellobiase, xylanase and pectinase, as well as the greater populations of total bacteria, fungi, protozoa and the dominant cellulolytic bacteria (R. albus, R. flavefaciens, F.…”

Section: Discussionmentioning

confidence: 94%

“…Considering the higher degradability of FA (0.97), rumen‐protected folic acid (RPFA) was a desirable FA supplement, which provided FA for microbial growth and allowed most of the FA to escape from the rumen . Our previous studies observed that supplementation of RPFA increased ruminal cellulolytic bacteria abundance, enzyme activity and total volatile fatty acid (VFA) concentration . Moreover, milk yield, milk protein concentration and nutrient digestibility increased with RPFA supplementation in dairy cows …”

Section: Introductionmentioning

confidence: 99%

“…7 Our previous studies observed that supplementation of RPFA increased ruminal cellulolytic bacteria abundance, enzyme activity and total volatile fatty acid (VFA) concentration. 7,8 Moreover, milk yield, milk protein concentration and nutrient digestibility increased with RPFA supplementation in dairy cows. 8 Selenium (Se) plays a crucial role in improving lactation performance and antioxidant status in dairy cows.…”

Section: Introductionmentioning

confidence: 99%

“…7,8 Moreover, milk yield, milk protein concentration and nutrient digestibility increased with RPFA supplementation in dairy cows. 8 Selenium (Se) plays a crucial role in improving lactation performance and antioxidant status in dairy cows. 9 Sun et al 10 found that milk yield, milk fat percentage, and activity of serum glutathione peroxidase (GSH-Px) and superoxide dismutase increased with Se addition in the form of hydroxy-selenomethionine.…”

Section: Introductionmentioning

confidence: 99%

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Effects of rumen‐protected folic acid and rumen‐protected sodium selenite supplementation on lactation performance, nutrient digestion, ruminal fermentation and blood metabolites in dairy cows

Wang

et al. 2019

J Sci Food Agric

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BACKGROUND Considering the insufficient ruminal synthesis of folic acid (FA), the higher degradability of FA, and the reduction of sodium selenite (SS) by ruminal microbes into non‐absorbable elemental Se, this study evaluated the effects of rumen‐protected FA (RPFA) and rumen‐protected SS (RPSS) on lactation performance, nutrient digestion and blood metabolites in dairy cows. RESULTS Dry matter (DM) intake and milk composition were unaltered, milk and milk fat yields were higher for both supplements, and milk protein yield was higher for RPFA addition. Digestibility of DM, neutral detergent fibre and acid detergent fibre was higher for both supplements, whereas that of organic matter and crude protein was higher for RPFA addition. Ruminal pH and ammonia N were lower, and concentration of total volatile fatty acids was higher for both supplements. Activity of cellobiase and xylanase was higher for RPFA addition, whereas that of pectinase and protease was higher for both supplements. The populations of total ruminal fungi, protozoa, Ruminococcus flavefaciens and Butyrivibrio fibrisolvens were higher for both supplements. The RPFA × RPSS interaction was significant for α‐amylase activity, total ruminal bacteria and R. albus populations; these three variables were increased by RPSS but the increase was greater when cows were also fed RPFA. CONCLUSION The results indicated that addition of RPFA or RPSS improved lactation performance, nutrient digestibility and ruminal fermentation in dairy cows by stimulating ruminal microbial growth and enzyme activity. © 2019 Society of Chemical Industry

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of rumen‐protected folic acid and rumen‐protected sodium selenite supplementation on lactation performance, nutrient digestion, ruminal fermentation and blood metabolites in dairy cows

Wang

et al. 2019

J Sci Food Agric

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A route to decreasing N pollution from livestock: Use of Festulolium hybrids improves efficiency of N flows in rumen simulation fermenters

Kamau

Belanche

Davies

et al. 2020

Food and Energy Security

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Ruminant agriculture suffers from inefficient capture of forage protein and consequential release of N pollutants to land. This is due to proteolysis in the rumen catalyzed by both microbial but initially endogenous plant proteases. Plant breeding‐based solutions are sought to minimize these negative environmental impacts. The aim of this study was to perform an integrated study of rumen N metabolism using semi‐continuous rumen simulation fermenters (Rusitec) to explore the extent to which swards containing Festulolium populations (interspecific hybrids between Lolium and Festuca grass species) with decreased rates of endogenous protein degradation conferred advantageous protein utilization in comparison with a National Listed perennial ryegrass. An in vitro experiment was conducted using three Festulolium hybrids (Lolium perenne × Festuca arundinacea var. glaucescens, LpFg; Lolium perenne × Festuca mairei, LpFm; and Lolium multiflorum × Festuca arundinacea var. glaucescens, LmFg) and a Lolium perenne, Lp control. LpFm and LmFg demonstrated significantly lower plant‐mediated proteolysis than the control. Fresh forage was incubated in Rusitec with rumen fluid from four donor cows. Feed disappearance and production of gas, methane, and volatile fatty acids were similar across cultivars. Whereas no differences in microbial protein synthesis were noted across treatments during early fermentation (0–6 hr after feeding), an increased microbial N flow in LpFm (+30%) and LmFg hybrids (+41%) was observed during late fermentation (6–24 hr after feeding), with higher overall microbial N flows (+13.5% and + 20.2%, respectively) compared with the control (Lp). We propose an underpinning mechanism involving the partitioning of amino acid catabolism toward branched‐chain amino acids and microbial protein synthesis in grasses with slow plant‐mediated proteolysis instead of accumulation of rumen ammonia in grasses with fast plant‐mediated proteolysis. These observations indicate the potential of Festulolium hybrids with a slow plant‐mediated proteolysis trait to improve the efficiency of capture of forage protein and decrease the release of N pollutants onto the land.

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Recent Developments in B-Vitamin Nutrition of Dairy Cattle

Singh,

Kerketta,

Kumari

et al. 2024

Feed Additives and Supplements for Ruminants

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Effects of rumen-protected folic acid and branched-chain volatile fatty acids supplementation on lactation performance, ruminal fermentation, nutrient digestion and blood metabolites in dairy cows

Cited by 30 publications

References 29 publications

Effects of rumen‐protected folic acid and rumen‐protected sodium selenite supplementation on lactation performance, nutrient digestion, ruminal fermentation and blood metabolites in dairy cows

Effects of rumen‐protected folic acid and rumen‐protected sodium selenite supplementation on lactation performance, nutrient digestion, ruminal fermentation and blood metabolites in dairy cows

A route to decreasing N pollution from livestock: Use of Festulolium hybrids improves efficiency of N flows in rumen simulation fermenters

Recent Developments in B-Vitamin Nutrition of Dairy Cattle

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