0660 Reduced enteric methane emissions on legume versus grass irrigated pastures

MacAdam, Jennifer W.; Beauchemin, K. A.; Bolletta, Andrea; Pitcher, L. R.

doi:10.2527/jam2016-0660

Cited by 3 publications

(1 citation statement)

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“…However, a study of cattle comparing ADG on BFT or endophyte-free tall fescue in Missouri reported even greater gains on BFT pasture ( Wen et al, 2002 ). In a subsequent Utah study ( MacAdam et al, 2016 ), cattle grazing BFT or the non-tannin legume cicer milkvetch ( Astragalus cicer L.) produced less enteric methane than cattle grazing meadow bromegrass.…”

Section: Is the Grass Always Greener?mentioning

confidence: 97%

Pasture chemoscapes and their ecological services

Villalba

Beauchemin

Gregorini

et al. 2019

Translational Animal Science

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Abstract Ruminant livestock-production systems are between a rock and a hard place; they are experiencing increasing societal pressure to reduce environmental impacts in a world that demands increased food supply. Recent improvements in the understanding of the nutritional ecology of livestock by scientists may help livestock producers respond to these seemingly contradictory demands. Forages are nutrition and pharmacy centers with primary (nutrients) and plant secondary compounds (PSC; pharmaceuticals, nutraceuticals), which can provide multiple services for the proper functioning of agroecosystems. Legumes with lower contents of fiber and higher contents of nonstructural carbohydrates, coupled with different types and concentrations of PSC (e.g., condensed tannins, terpenes), create a diverse array of chemicals in the landscape (i.e., the “chemoscape”) with the potential to enhance livestock nutrition, health and welfare relative to foodscapes dominated by grasses and other conventional feeds. These PSC-containing plants may reduce methane emissions and nitrogen (N) excretion from animals while increasing animal growth rate compared with swards dominated by grasses, and provide meat quality that appeals to consumers. Condensed tannins from sainfoin and saponins from alfalfa and manure of cattle consuming these forages also reduce N mobilization in soils, reduce nutrient leaching, and increase plant-available N stores for future use. The challenge for future pastoral production systems is to design multifunctional spatiotemporal arrangements of forages with “ideal” chemical diversity for specific ecoregions, aiming to achieve sustainability while increasing production goals and improving ecosystem services. Thus, the objective of this review is to stimulate the quest for chemically and taxonomically diverse pastoral feeding systems that optimize overall productivity; reduce environmental impacts; and enhance livestock, soil, and human health.

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Section: Is the Grass Always Greener?mentioning

confidence: 97%