Free radicals are not only destructive to the living cells but also reduce the quality of animal products through oxidation. As a result the superoxide anion radical (O2-), one of the most destructive reactive oxygen species, is a matter of concern for the animal scientists as well as feed manufacturers to ensure the quality of product to reach consumers demand. The superoxide anion radical scavenging activities (SOSA) of water and MeOH extracts of 2 herbs and 9 pasture samples collected from lowland and highland swards were determined against a 5,5-dimethyl-1-pyroline-N-oxide-O2-spin adduct based on a hypoxanthine-xanthine oxidase reaction using electron spin resonance spectrometry. Both the water and MeOH extracted SOSA differed among the herbs and pastures. Species and altitudinal variations were observed between extraction methods. The herbs were higher in both water and MeOH extracted SOSA than the pastures except for water extracts of one pasture, white clover (Trifolium repens L.). Among the pastures, quackgrass (Agrophyron repens L.) showed higher SOSA in both the MeOH and water extracts, and timothy (Phleum pretense L.) showed higher MeOH extracted SOSA. It is apparent that the kind and amount of antioxidants differ among herbs and pastures. Animal health and quality of animal products could be improved by adequate selection and combining of herbs and pastures having higher SOSA.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1950272 | PMC |
| http://dx.doi.org/10.7150/ijbs.3.349 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Forest restoration improves habitat and water quality in tropical streams: A multiscale landscape assessment.
Sci Total Environ
January 2025
Department of Forest Science, College of Agriculture, University of São Paulo (ESALQ), Av. Padua Dias, 11, Caixa Postal 9, 13418-900 Piracicaba, SP, Brazil.
Forest restoration has been a common practice to safeguard water quality and stream health but it is unclear to which extent and pace forest restoration recovers stream ecosystem structure and functions. Also, stream health might be affected by the forest restoration type and the quality of the interventions. Here, we sought to evaluate the recovery of stream habitat and water quality through forest restoration in catchments dominated by pasturelands, and explored the relationship between landscape structure and stream ecosystem recovery.
View Article and Find Full Text PDFEffect of sward species diversity combined with a reduction in nitrogen fertilizer on the performances of spring-calving grazing dairy cows.
J Dairy Sci
December 2024
Animal and Grassland Research and Innovation Centre, Teagasc Moorepark, Fermoy, Co. Cork P61C996, Ireland.
Article Synopsis
- The study aimed to assess how diversifying grass swards and reducing nitrogen fertilizer affect dairy cow performance over three years on different pasture types (monoculture, mixed with clover, and multispecies).
- Results showed no major differences in overall pasture production or sward nutritive value among the different types, but the multispecies sward led to higher milk and milk solids yield compared to the nitrogen-heavy monoculture.
- The breed of cows also played a role, with Jersey crossbreds producing less milk but with higher fat and protein content compared to pure Holsteins, resulting in more efficient milk solids production based on body weight.
Sward type alters enteric methane emissions, nitrogen output and the relative abundance of the rumen microbial ecosystem in sheep.
J Anim Sci
January 2024
Teagasc, Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Mellows Campus, Athenry, Co. Galway, Ireland.
Observed improvements in animal and sward performance, coupled with a desire for more sustainable pasture-based feeding systems, has triggered a surge in the implementation of more botanically diverse pastures. However, thus far, there has been limited research investigating the effects of botanically diverse sward types on enteric methane (CH4) or nitrogen (N) excretion, alongside the ruminal microbiota and fermentation profile, in sheep. Hence, this study investigates the effect of sward type on CH4 production and N excretion, in addition to assessing the rumen microbiome, volatile fatty acid proportions, and ammonia nitrogen (NH3-N) concentration in sheep.
View Article and Find Full Text PDFThe inclusion of companion forages in the diet alongside perennial ryegrass increased dry matter intake and organic matter digestibility in sheep.
Animal
May 2024
Teagasc Animal and Grassland Research and Innovation Centre, Mellows Campus, Athenry, Co. Galway, Ireland. Electronic address:
The inclusion of companion forages in the diet of ruminant animals is gaining popularity in temperate regions due to observed improvements in animal performance. The aim of this study was to assess the effect of diet type on DM intake (DMI) and organic matter digestibility (OMD) in sheep. Furthermore, the effect of sward type on diet nutritive quality was investigated.
View Article and Find Full Text PDFMeasuring flammability of crops, pastures, fruit trees, and weeds: A novel tool to fight wildfires in agricultural landscapes.
Sci Total Environ
January 2024
Department of Pest-management and Conservation, Lincoln University, Lincoln, 7647 Christchurch, New Zealand.
Fires on agricultural land account for 8-11 % of the total number of fires that occur globally. These fires burn through various crops, pastures, and native vegetation on farms, causing economic and environmental losses. Fire management on farms will be aided by understanding the flammability of plant species as this would allow the design of low-flammability agricultural landscapes, but flammability data on large numbers of agricultural species are lacking.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!