Dietary and Animal Strategies to Reduce the Environmental Impact of Pastoral Dairy Systems Result in Altered Nutraceutical Profiles in Milk

Marshall, Cameron J.; Garrett, Konagh; Vliet, Stephan van; Beck, Matthew R; Gregorini, Pablo

doi:10.3390/ani12212994

Cited by 4 publications

(4 citation statements)

References 74 publications

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“…There were also small changes in branch‐chain and odd‐number carbon length fatty acids in milk fat reported by Mangwe et al (2018). Similar changes in milk fatty acids in response to feeding PL herbage have been reported by Marshall et al (2022b). Feeding PR‐red clover‐PL silage, with the latter at 35% inclusion in the stack, also resulted in a marked increase in the C18:3 fatty acid content of milk fat (>5‐fold relative to total mixed ration, TMR, Ineichen et al, 2019).…”

Section: Effects Of Feeding Plantain On Milk and Meat Compositionsupporting

confidence: 87%

“…There was no impact of PL feeding on milk protein content apart from one report of a small increase which was associated with an increase in milk protein yield (Nkomboni et al, 2021). Marshall et al (2022b) also reported changes in multiple minor milk components (mostly intermediary metabolites) from cows fed PL vs. PR herbage.…”

Section: Effects Of Feeding Plantain On Milk and Meat Compositionmentioning

confidence: 98%

“…Effects on C18:2 were much smaller. Marshall et al (2022b) also studied phytochemical content and noted multiple profile changes in response to feeding PL compared with PR, suggesting the potential for altering the nutraceutical value of milk.…”

Section: Effects Of Feeding Plantain On Milk and Meat Compositionmentioning

confidence: 99%

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Implementing plantain (Plantago lanceolata) to mitigate the impact of grazing ruminants on nitrogen losses to the environment: A review

Pinxterhuis,

Judson,

Peterson

et al. 2024

Grass and Forage Science

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Urine patches from grazing ruminants contain high concentrations of nitrogen (N) and are the main source of N leaching from grazed pastoral farming systems. While there have been various options identified to substantially reduce N leaching, in general these practices increase the cost of production or reduce production per hectare. In New Zealand, multi‐species pastures were evaluated as a cheaper option that would potentially retain productivity. Early research showed these pastures had lower urinary N excretion from grazing animals and increased plant N uptake, compared with standard New Zealand perennial ryegrass/white clover (PR‐WC) pastures. Further research highlighted the beneficial attributes of the pasture herb narrow‐leaved plantain (Plantago lanceolata; PL), specifically: reduced urine N concentration, reduced urine N excretion, and reduced rate of soil nitrification. Significant reductions (14%–89%) in N leaching were found from cow urine applied to lysimeters with pastures including PL, compared with PR‐WC pasture. Paddock‐scale measurements confirmed the effects of PL, with 20%–60% lower N leaching when PL comprised 30%–40% of the dry matter (DM) of PL‐PR‐WC grazed pastures. There were no negative effects on milk production and composition when feeding PL to dairy cows, but small positive effects on fatty acid profiles. However, weed and pest management, palatability and persistence remain challenging in pastures containing PL on commercial farms. Management options need to be clarified to ensure successful establishment and maintenance of PL. Additionally, the cultivar differences in secondary compounds and their impact on nitrification rate and N leaching need to be better understood.

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Section: Effects Of Feeding Plantain On Milk and Meat Compositionsupporting

confidence: 87%

Section: Effects Of Feeding Plantain On Milk and Meat Compositionmentioning

confidence: 98%

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Implementing plantain (Plantago lanceolata) to mitigate the impact of grazing ruminants on nitrogen losses to the environment: A review

Pinxterhuis,

Judson,

Peterson

et al. 2024

Grass and Forage Science

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“…The question arises, are there ecological implications and connections between phytochemically diverse swards and the health of humans and soil (Provenza et al, 2019). If so, this expanded pool of nutrients, medicines, and prophylactics, known as plant secondary compounds, must be considered to understand the effects of consuming animal products on human health, as they have been reported to be concentrated in the meat and milk of livestock consuming those plants (Marshall et al, 2022;.…”

Section: Introductionmentioning

confidence: 99%

Connecting plant, animal, and human health using untargeted metabolomics.

Fleming,

Provenza,

Leroy

et al. 2024

Preprint

Self Cite

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Consumers of meat and milk products are interested in the connection between agricultural practices and the wellbeing of livestock. Consumers are also concerned about the impact of livestock products on their own health and wellbeing, with some turning to alternative plant-based protein sources. The connection between agricultural practice and consumer metabolism has previously been tenuous, but the development of untargeted metabolomic processes offers the opportunity to reconcile and connect opposing spectrums of the food-chain. We performed a cattle grazing study which compared the performance and metabolomic profiles of beef finished on three forage mixtures of either perennial ryegrass x white clover (PRG), a complex multispecies mixture (n = 22 species) grasses, legumes, and forbs (CMS), and adjacent monocultures of perennial ryegrass, chicory, plantain, lucerne and red clover, which were sown longitudinally across the paddock and all available to cattle throughout the four-month finishing period. Cattle were then processed in a commercial abattoir and the tenderloin collected from each animal for metabolomic analyses. The remaining meat was minced (5mm plate), homogenised and processed into 250 g meat patties. A double-blind randomized cross-over clinical trial was then performed with 23 individuals that consumed a single meal of the meat. Metabolomic analyses were performed using a combination of GCMS/MS, lipidomics and LC-qToF-on plasma samples collected from all participants before meat consumption, 3-, and 5-h post prandial, in addition to meat and pasture samples. Metabolomic profiles of plant, meat and plasma were altered by the three forage mixtures. Metabolomic profiles of plant were different across all three sward mixtures, although CMS and AMS shared more similarities then PRG. However, metabolomic and lipidomic profiles of meat and plasma indicated the greatest differences were observed between AMS and CMS and PRG, which indicates grazing management may provide the greatest opportunity to manipulate metabolomics as opposed to maximising the plant species diversity of a pastoral diet. Gamma-tocopherol (Vitamin E) was elevated in plant material of the AMS diet and the plasma of those consuming AMS meat, compared with PRG or CMS. Fatty acid metabolism was also altered in meat and plasma of the AMS diet as eicosapentaenoic acid was elevated compared with PRG or CMS. Additional differences were also detected in untargeted analyses although features were unable to be matched to the in-house metabolite library. While many features were not able to be identified, these results are the first evidence that metabolomic profiles of the human consumer reflect not only the beef finished from different forages, but also meat and plasma reflect metabolomic profiles of the different sward mixes.

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Transcriptome and Metabolome Analyses Reveal High-Altitude Adaptation Mechanism of Epididymis Sperm Maturation in Tibetan Sheep

Li,

Yang,

et al. 2024

Animals

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In this study, the epididymal histology, caepididymal sperm physiological parameters, serum reproductive hormones, and antioxidant enzyme SOD levels of Tibetan sheep at a 2500 m and 3500 m altitude were compared by using a combination of transcriptome and metabolomics methods. This was conducted to investigate the effects of a high-altitude environment on spermatogenesis and the maturation of Tibetan sheep. The results showed that compared to the low-altitude group, the high-altitude group had a smaller epididymal lumen, thicker epididymal wall, significantly decreased sperm survival rate, and significantly increased sperm deformation rate, but no difference in sperm motility and sperm respiratory intensity. With increasing altitude, Tibetan sheep showed a decreasing trend in serum reproductive hormones (FSH and T), while the antioxidant enzyme SOD activity was significantly reduced. Transcriptomic analysis revealed 139 differentially expressed genes in the Tibetan sheep epididymis under high-altitude conditions. The SYCP2 gene is involved in multiple biological processes related to reproduction and plays an important role in the regulation of epididymal function and sperm quality in Tibetan sheep. Genes like ADCYAP1R1, CABP2, CALN1, and ATP6V1B1 can help maintain sperm viability and maturation by regulating the cAMP signaling pathway, calcium ion homeostasis, and cellular signaling. Metabolomic analysis found that the high-altitude group had increased adenosine content and decreased prostaglandin I2 content in the epididymis. These metabolites are involved in spermatogenesis, motility, fertilization, and early embryonic development. The integrated omics analysis suggests that Tibetan sheep adapt to the high-altitude hypoxic environment by regulating cAMP signaling pathway genes like ADCY and PRKACA, as well as metabolites like adenosine and prostaglandin I2, to maintain epididymal function and sperm motility. These genes and metabolites play an important role in maintaining normal epididymal function and sperm motility at high altitudes.

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Dietary and Animal Strategies to Reduce the Environmental Impact of Pastoral Dairy Systems Result in Altered Nutraceutical Profiles in Milk

Cited by 4 publications

References 74 publications

Implementing plantain (Plantago lanceolata) to mitigate the impact of grazing ruminants on nitrogen losses to the environment: A review

Implementing plantain (Plantago lanceolata) to mitigate the impact of grazing ruminants on nitrogen losses to the environment: A review

Connecting plant, animal, and human health using untargeted metabolomics.

Transcriptome and Metabolome Analyses Reveal High-Altitude Adaptation Mechanism of Epididymis Sperm Maturation in Tibetan Sheep

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