Dietary supplementation of rumen‐protected methionine decreases the nitrous oxide emissions of urine of beef cattle through decreasing urinary excretions of nitrogen and urea

Zhao, Yuxing; Rahman, Sazzadur; Zhao, Guanglei; Bao, Yu; Zhou, Ke

doi:10.1002/jsfa.10217

Cited by 9 publications

(5 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Approaches to mitigate N 2 O emission from animal excreta include decreasing the total N excretion, regulating the fecal N-to-urinary N ratio, and supplementing tannins and tannic acids to rations ( Zhao, 2017 ; Zhao et al., 2020 ; Zhou et al, 2019 ). A recent method to mitigate the N 2 O emissions from the urine patches of grazing ruminants is to use dicyandiamide (DCD) which is an exogenous nitrification inhibitor (NI).…”

Section: Introductionmentioning

confidence: 99%

Effects of dietary inclusion with rapeseed cake containing high glucosinolates on nitrogen metabolism and urine nitrous oxide emissions in steers

et al. 2022

Self Cite

View full text Add to dashboard Cite

Two consecutive trials were conducted to investigate the effects of glucosinolates (GLS) in rapeseed cake (RSC) on nitrogen (N) metabolism and urine nitrous oxide (N 2 O) emissions in steers. In trial 1, 8 steers and 4 levels of RSC, i.e. 0, 2.7%, 5.4% and 8.0% dry matter (DM) (0, 6.0, 12.1, 18.1 μmol GLS/g DM) were allocated in a replicated 4 × 4 Latin square. In trial 2, the static incubation technique was used for measuring the N 2 O emissions of the urine samples collected from trial 1. The results of trial 1 indicated that dietary inclusion of RSC decreased the digested N and increased the fecal N excretion ( P < 0.01), whereas it did not affect the urinary N excretion, total N excretion and N retention ( P > 0.10). Dietary inclusion of RSC decreased the urinary excretion of urea while it increased allantoin, total purine derivatives, the predicted rumen microbial N flow and thiocyanate (SCN) ( P < 0.05). Dietary inclusion of RSC did not affect the plasma triiodothyronine and thyroxine while it down-regulated the plasma relative concentrations of 4-aminohippuric acid, 3α,7α-dihydroxycoprostanic acid, phosphatidylserine (14:0/16:0), 6β-hydroxyprogesterone, pyrrhoxanthinol, tatridin B, mandelonitrile rutinoside, taraxacoside ( P < 0.05), and up-regulated hypoglycin B, neuromedin N (1-4), dhurrin, 5-deoxykievitone ( P < 0.01). The results of trial 2 indicated that dietary RSC increased the steer urine N 2 O–N fluxes, the ratio of N 2 O–N to N application and the estimated steer urine N 2 O–N emissions ( P < 0.01). A close correlation was found between the estimated steer urine N 2 O–N emissions and the output of urinary SCN ( P < 0.001). In conclusion, dietary RSC increased the fecal N excretion, whereas it did not affect the urinary N excretion and the N retention rate in steers. Dietary RSC increased rather than decreased the urine N 2 O–N emissions even though it decreased the urinary excretion of urea. The SCN excreted in urine could be the major factor in increasing the urine N 2 O–N emissions. Whether other metabolites excreted into urine from RSC have an impact on the urine N 2 O–N emissions in steers needs to be investigated in the future.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of dietary inclusion with rapeseed cake containing high glucosinolates on nitrogen metabolism and urine nitrous oxide emissions in steers

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…Likewise, methionine is one of the sulfur-containing amino acids, which is critical for the health, growth, and meat quality of animals [ 8 , 12 ]. Recent studies observed that dietary N utilization was improved in beef cattle as a result of the supplementation with rumen-protected methionine (RPM) [ 13 , 14 ]. Furthermore, Liu et al reported [ 15 ] that supplementation with RPL and RPM could affect rumen bacterial communities, which was positively associated with improved meat quality in yaks [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Supplementary Levels of Rumen-Protected Lysine and Methionine on Growth Performance, Carcass Traits, and Meat Quality in Feedlot Yaks (Bos grunniens)

Zhao

Wang

et al. 2021

Animals

View full text Add to dashboard Cite

Yak, a unique bovine species on the Qinghai-Tibetan Plateau, has provided pastoralists with the basic materials of production and life for thousands of years. Existing literature showed that yak meat is of high nutritional value for humans whereas the growth performance is relatively low. As it has been demonstrated, lysine and methionine are the two key limiting amino acids in ruminants. Therefore, this study was conducted to investigate the effect of supplementary levels of rumen-protected lysine (RPL) and methionine (RPM) on growth performance, carcass traits, and meat quality in feedlot yaks. Thirty-two male yaks, with initial body weight (IBW) of 237.5 ± 13.99 kg were randomly assigned to four dietary treatments (n = 8), including control group (CON; basal diet without adding rumen-protected amino acid (RPAA)), low RPAA supplementation group (Group Low; basal diet supplemented with RPL (30.0 g/animal/day) and RPM (7.5 g/animal/day)), medium RPAA supplementation group (Group Medium; basal diet supplemented with RPL (50.0 g/animal/day) and RPM (12.5 g/animal/day)), and high RPAA supplementation group (Group High; basal diet supplemented with RPL (70.0 g/animal/day) and RPM (17.5 g/animal/day)). The average daily gain was increased linearly (p < 0.001) and quadratically (p < 0.01) while feed to gain ratio was decreased linearly (p < 0.001) and quadratically (p < 0.001) with the increasing RPAA supplementation, and the average daily gain was higher while feed to gain ratio was lower in RPAA than CON (p < 0.001). Meat color L* values and b* were decreased linearly (p < 0.01) with the increase of RPAA supplementation, and b* was lower in RPAA than CON (p < 0.05). Meat color a* value was increased linearly (p < 0.05) with the increasing RPAA supplementation, and a* was higher in RPAA than CON (p < 0.05). The 24 h drip loss and shear force were decreased quadratically (p < 0.01) with the increasing RPAA supplementation, and drip loss and shear force values were lower in RPAA than CON (p < 0.05). The glycine concentration in longissimus dorsi (LD) increased linearly (p < 0.05) with the increasing RPAA supplementation. These results demonstrated that both the growth performance and meat quality characteristics were improved in feedlot yaks as an effect of the dietary supplementation with RPL and RPM, and the medium supplementary level is recommended, since it showed the most promising results.

show abstract

“…Large ruminant animals have high intakes of feed and water. The efficiency of dietary nitrogen utilization of beef cattle is only about 15.9~19.0%, and although yaks have higher urea recycling and greater microbe capture of the recycled urea by the rumen than beef cattle, their dietary nitrogen efficiency still only is about 25.9%, and a large amount of nitrogen is excreted in the feces and urine [ 3 , 4 , 5 ]. In addition, the crude protein content of grass (dead matter) in the cold season is less than 5% [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Dietary Protein Level and Rumen-Protected Methionine and Lysine on Growth Performance, Rumen Fermentation and Serum Indexes for Yaks

Wang,

Fu,

et al. 2024

Animals

View full text Add to dashboard Cite

This study investigated the effects of the dietary protein level and rumen-protected methionine and lysine (RPML) on the growth performance, rumen fermentation, and serum indexes of yaks. Thirty-six male yaks were randomly assigned to a two by three factorial experiment with two protein levels, 15.05% and 16.51%, and three RPML levels: 0% RPML; 0.05% RPMet and 0.15% RPLys; and 0.1% RPMet and 0.3% RPLys. The trial lasted for sixty days. The results showed that the low-protein diet increased the DMI and feed conversion ratio of yaks. The diet supplemented with RPML increased the activities of IGF1 and INS and nutrient digestibility. The high-protein diet decreased the rumen butyrate concentration and increased the rumen isovalerate concentration. The low-protein diet supplemented with RPML increased the rumen pH and the concentrations of total volatile fatty acids, butyrate and NH3-N; the high-protein diet supplemented with a high level of RPML decreased the rumen pH and the concentrations of isobutyrate, isovalerate, propionate and NH3-N. The low-protein diet supplemented with RPML increased the total antioxidant capacity and glutathione peroxidase activity, along with the concentrations of malondialdehyde and amino acids such as aspartic acid, lysine, cysteine, etc. In conclusion, a low-protein diet supplemented with RPML is beneficial for rumen and body health, physiological response, and metabolic status in yaks.

show abstract

Dietary supplementation of rumen‐protected methionine decreases the nitrous oxide emissions of urine of beef cattle through decreasing urinary excretions of nitrogen and urea

Cited by 9 publications

References 29 publications

Effects of dietary inclusion with rapeseed cake containing high glucosinolates on nitrogen metabolism and urine nitrous oxide emissions in steers

Effects of dietary inclusion with rapeseed cake containing high glucosinolates on nitrogen metabolism and urine nitrous oxide emissions in steers

Effect of Supplementary Levels of Rumen-Protected Lysine and Methionine on Growth Performance, Carcass Traits, and Meat Quality in Feedlot Yaks (Bos grunniens)

Effects of Dietary Protein Level and Rumen-Protected Methionine and Lysine on Growth Performance, Rumen Fermentation and Serum Indexes for Yaks

Contact Info

Product

Resources

About