Published: Jan. 1, 2024
Language: Английский
Journal of Dairy Science, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
Ruminants play an important role in global food security and nutrition. The rumen microbial community provides ruminants with a unique ability to convert human indigestible plant matter, into high quality edible protein. However, enteric CH4 produced the is both potent GHG metabolizable energy loss for ruminants. As microbiome constitutes 15-40% of inter-animal variation emissions, understanding microbiological mechanisms underpinning ruminal methanogenesis its interaction host animal, crucial developing mitigation strategies. Variation relative abundance different species has been observed cattle contrasting residual emission yield up 20% emissions attributable presence small number species. demonstration ruminotypes associated or low suggests that interactions within complex consortia their are major source emissions. Consequently, microbiome-assisted genomic approaches being developed select emitting cattle, breeding values included as part national programmes. Generating data use selection programs expensive, therefore, identifying biomarkers milk plasma develop predictive models which include predictors equations based on animal related data, required. A better also aided development refinements anti-methanogenic feed additives. these strategies, increase amount reducing equivalents ecosystem, do not generally result enrichment propionate improvement performance. Current research aims provide alternative sinks stimulate activity commensal microbes supplementation direct fed microbials capture lost energy. Furthering our knowledge host, will aid strategies ruminant livestock.
Language: Английский
Citations
0
Journal of Dairy Science, Journal Year: 2025, Volume and Issue: unknown
Published: March 1, 2025
In 2022, New York (NY) had over 620 000 dairy cows producing more than 7 million Mg (15 billion lb) of milk, ranking fifth in states the United States. The objectives this work were to (1) estimate total farm-gate greenhouse gas (GHG) emissions and GHG emission intensity (GHGei) 36 medium large (>300 mature cows) commercial NY dairies, (2) determine contribution main GHGs (on-farm methane [CH4], nitrous oxide [N2O], carbon dioxide [CO2], plus embedded [CO2 equivalents; CO2eq]) sources (enteric fermentation, feed production, manure management, grazing, fuel energy) GHGei, (3) identify key performance indicators (KPIs) driving GHGei. Assessments done for 2022 using Cool Farm Tool. size ranged from 345 6 350 head predominantly Holstein with animal densities between 1.76 4.85 units ha-1 (0.71 1.96 AU ac-1) heifer cow ratios 0.02 0.49. Herds produced an average fat protein corrected milk (FPCM) yield 12.7 (29 FPCM cow-1 per year 64% homegrown feed. Total production was 873 (1.92 lb), representing approximately 12% 2022. GHGei 0.63 1.06 kg CO2eq FPCM-1 (mean = 0.86kg FPCM-1). Methane biggest contributor, accounting 60% on average, enteric CH4 as largest contributor (45% farm emissions). Among farms, accounted about 25%, 7% production. Manure management practices 20% explained amount variation among farms. Potential KPIs included system, ratio, herd consumption intensity, percentage feed, crop nutrient source (fertilizer versus manure). Emission reflected high proportion good quality careful use treatment systems (covered liquid slurry storages, anaerobic digesters) several dairies. influence replacement rate ratio density, subsequent requires detailed analysis. farms study represent a considerable NY's Greater participation by smaller is necessary draw conclusions industry whole.
Language: Английский
Citations
0
Journal of Advanced Research, Journal Year: 2025, Volume and Issue: unknown
Published: March 1, 2025
The impact of non-antibiotic feed additives on livestock performance and health is contingent upon a multitude variables, including the animal species, dosage type additives, duration oral administration. However, there paucity knowledge regarding relationship between these factors animals. objective this study was to conduct global meta-analysis based pool empirical studies investigate effects dietary growth, production, blood metabolites, immunity, intestinal morphology, abundance gut microbiota in livestock. A meta-regression coupled with dose-effect analysis performed ascertain optimal feeding for body function. total 71 papers, estimating 1, 035 effect size across 9 species 7 types were recruited our meta-dataset. Overall assessment confirmed that diet can significantly improve production immune function species. Our findings indicated more pronounced herbivores than omnivores. dose-response results overall doses antimicrobial peptides, enzymes, oligosaccharides, organic acids, phytogenic, probiotics prebiotics 100 mg/kg, 30 200 50 10⁶ CFU/kg, 10 respectively. Oral administration 2-month period effectively improves health. This evidence-based approach provides foundation implementing customized strategies designed optimize performance, enhance immunity reduce costs. shows are promising alternatives antibiotics reducing use antibiotics. Furthermore, suggest lead recommendations practical strategies, providing producers sustainable cost-effective management.
Language: Английский
Citations
0
Animals, Journal Year: 2025, Volume and Issue: 15(6), P. 781 - 781
Published: March 10, 2025
Polygain™ (PG), a polyphenolic extract from sugarcane, has recently been identified as potential additive to reduce methane (CH4) emissions in livestock. This experiment examined the effects of PG on enteric CH4 emission Holstein Friesian weaned calves. Calves were allocated annual pasture grazing and received supplementary pellets (200 g/calf/day; Barastoc calf-rearer cubes—Ridley Corporation). The experimental design followed was completely randomized (CRD), comprising 24 female calves (4–5 months old) two equal groups; control (standard pellets) vs. treatment (pellets formulated by adding deliver 10 g PG/calf/day). Experimental diets fed for three between August November 2023, including two-week adaptation period. weighed at start end study. A GreenFeed (C-Lock Pvt Ltd.) monitoring unit (GEM) used measure GHG their groups 2-day rotational cycle. During visit GEM, encouraged enter an enclosed area or individual feeding stall where CH4, CO2, O2, H2, H2S measurements taken. results indicated significant effect supplementation calves, with lower production supplemented (26.66 ± 2.06 g/day) compared group (35.28 1.39 g/day, p < 0.001). CO2/O2 ratio (235 14) (183 9.6) differed significantly (p Overall, (10 g/calf/day) reduced average per day did not adversely affect growth development confirming its useful anti-methanogenic potential.
Language: Английский
Citations
0
Animals, Journal Year: 2025, Volume and Issue: 15(6), P. 819 - 819
Published: March 13, 2025
This study evaluated enteric methane (CH₄) emissions, dry matter intake (DMI), and performance in rearing beef heifers fed either a Guinea-grass-only diet (0WCS) or Guinea grass supplemented with whole cottonseed (WCS) at 0.5% of body weight (BW). Twenty-four Braford were randomly allocated into four pens (three animals per pen) treatment over two experimental periods. Methane emissions measured using the SF₆ tracer technique. Heifers receiving WCS supplementation produced 29% less CH₄ (120.64 vs. 169.54 g/day for 0.5WCS 0WCS, respectively; p = 0.02) showed 22% reduction yield (7.30% 9.41% gross energy intake; 0.02). intensity was 33% lower (0.37 0.55 g CH₄/kg BW; 0.01). However, significantly reduced total DMI forage (p 0.01 < 0.01, respectively). In terms performance, group gained 0.28 kg/day, while those 0WCS lost 0.10 kg/day. These results indicate that mitigates improving gain low-quality diets, making it promising strategy enhancing sustainability cattle production systems.
Language: Английский
Citations
0
Biotechnology for Biofuels and Bioproducts, Journal Year: 2025, Volume and Issue: 18(1)
Published: March 14, 2025
The urgent need to mitigate climate change requires finding sustainable and efficient alternatives fossil fuel-based materials. Biosequestration by microalgae has been suggested as a potential method for mitigation due its environmentally friendly nature ability produce high-value compounds. However, the large-scale application of microalgal biorefineries faces significant challenges, particularly in harvest processing stages, which are often costly energy-intensive. This study aims benchmark value-added fractions that can be produced via microalgae-based against their commercially available counterparts. A systematic review was conducted using Web Science™ database identify current commercial sources proteins, lipids, polyunsaturated fatty acids pigments, this identified key sectors applications each fraction, well market competitors. results highlight substantial cost differences across production systems, with traditional agricultural demonstrating lower CAPEX but greater environmental challenges. Meanwhile, although associated higher CAPEX, offer advantages such reduced land water dependency, potentially leading long-term economic resilience sustainability. By pinpointing research trends, optimization opportunities, work offers valuable insights into profitability competitiveness providing future efforts. novelty lies comprehensive comparison establishing clear suggesting focus areas enhancement.
Language: Английский
Citations
0
Journal of Dairy Science, Journal Year: 2025, Volume and Issue: unknown
Published: March 1, 2025
Language: Английский
Citations
0
Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 347 - 368
Published: Jan. 1, 2025
Language: Английский
Citations
0
Journal of Functional Foods, Journal Year: 2025, Volume and Issue: 128, P. 106843 - 106843
Published: April 25, 2025
Language: Английский
Citations
0
Published: Jan. 1, 2024
Language: Английский
Citations
0