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Vítor ACM, Godinho M, Francisco AE, Silva J, Almeida J, Fialho L, Soldado D, Jerónimo E, Scollan ND, Huws SA, Santos-Silva J, Alves SP, Bessa RJB. Nannochloropsis oceanica microalga feeding increases long-chain omega-3 polyunsaturated fatty acids in lamb meat. Meat Sci 2023; 197:109053. [PMID: 36493555 DOI: 10.1016/j.meatsci.2022.109053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022]
Abstract
To test the hypothesis that lambs fed freeze-dried Nannochloropsis oceanica (NO) biomass will have a higher deposition of EPA in tissues than those fed other Nannochloropsis EPA-sources, we fed 28 lambs with one of four diets: i) C, control, without EPA; ii) O, with 1.2% Nannochloropsis oil; iii) SD, with 12.3% spray-dried NO biomass; iv) FD, with 9.2% freeze-dried NO biomass. Dry matter intake, growth, tissues fatty acid composition, oxidative stability and sensory traits of the resultant meat were evaluated. The EPA was highest in tissues of lambs fed SD and FD compared with O but was similar between SD and FD. Total trans-18:1 did not differ among treatments, but the t10/t11-18:1 ratio decreased with all EPA containing diets. EPA diets were also supplemented with Vitamin E preventing the lipid oxidation in EPA-enriched meat and the meat sensory traits were not affected although occasionally some off-flavours were detected in FD meat.
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Affiliation(s)
- A C M Vítor
- Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal; CIISA, Centro de Investigação Interdisciplinar em Sanidade Animal, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal
| | - M Godinho
- Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal
| | - A E Francisco
- CIISA, Centro de Investigação Interdisciplinar em Sanidade Animal, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Polo de Investigação de Santarém, Instituto Nacional de Investigação Agrária e Veterinária (INIAV-Santarém), 2005-048 Vale de Santarém, Portugal
| | - J Silva
- Allmicroalgae, 2445-287 Pataias, Portugal
| | - J Almeida
- CIISA, Centro de Investigação Interdisciplinar em Sanidade Animal, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Polo de Investigação de Santarém, Instituto Nacional de Investigação Agrária e Veterinária (INIAV-Santarém), 2005-048 Vale de Santarém, Portugal
| | - L Fialho
- CIISA, Centro de Investigação Interdisciplinar em Sanidade Animal, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), 7801-908 Beja, Portugal
| | - D Soldado
- CIISA, Centro de Investigação Interdisciplinar em Sanidade Animal, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), 7801-908 Beja, Portugal
| | - E Jerónimo
- Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), 7801-908 Beja, Portugal; MED Mediterranean Institute for Agriculture, Environment and Development & CHANGE Global Change & Sustainability Institute, CEBAL, 7801-908 Beja, Portugal
| | - N D Scollan
- School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, Belfast, United Kingdom
| | - S A Huws
- School of Biological Sciences, Institute for Global Food Security, Queen's University Belfast, Belfast, United Kingdom
| | - J Santos-Silva
- CIISA, Centro de Investigação Interdisciplinar em Sanidade Animal, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Polo de Investigação de Santarém, Instituto Nacional de Investigação Agrária e Veterinária (INIAV-Santarém), 2005-048 Vale de Santarém, Portugal
| | - S P Alves
- Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal; CIISA, Centro de Investigação Interdisciplinar em Sanidade Animal, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal
| | - R J B Bessa
- Faculdade de Medicina Veterinária, Universidade de Lisboa, 1300-477 Lisboa, Portugal; CIISA, Centro de Investigação Interdisciplinar em Sanidade Animal, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal; Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal.
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Huws SA, Scott MB, Tweed JKS, Lee MRF. Fatty acid oxidation products ('green odour') released from perennial ryegrass following biotic and abiotic stress, potentially have antimicrobial properties against the rumen microbiota resulting in decreased biohydrogenation. J Appl Microbiol 2013; 115:1081-90. [PMID: 23889811 DOI: 10.1111/jam.12314] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 07/17/2013] [Accepted: 07/20/2013] [Indexed: 11/29/2022]
Abstract
AIMS In this experiment, we investigated the effect of 'green odour' products typical of those released from fresh forage postabiotic and biotic stresses on the rumen microbiota and lipid metabolism. METHODS AND RESULTS Hydroperoxyoctadecatrienoic acid (HP), a combination of salicylic and jasmonic acid (T), and a combination of both (HPT) were incubated in vitro in the presence of freeze-dried ground silage and rumen fluid, under rumen-like conditions. 16S rRNA (16S cDNA) HaeIII-based terminal restriction fragment length polymorphism-based (T-RFLP) dendrograms, canonical analysis of principal coordinates graphs, peak number and Shanon-Weiner diversity indices show that HP, T and HPT likely had antimicrobial effects on the microbiota compared to control incubations. Following 6 h of in vitro incubation, 15.3% of 18:3n-3 and 4.4% of 18:2n-6 was biohydrogenated in control incubations, compared with 1.3, 9.4 and 8.3% of 18:3n-3 for HP, T and HPT treatments, respectively, with negligible 18:2n-6 biohydrogenation seen. T-RFLP peaks lost due to application of HP, T and HPT likely belonged to as yet uncultured bacteria within numerous genera. CONCLUSIONS Hydroperoxyoctadecatrienoic acid, T and HPT released due to plant stress potentially have an antimicrobial effect on the rumen microbiota, which may explain the decreased biohydrogenation in vitro. SIGNIFICANCE AND IMPACT OF THE STUDY These data suggest that these volatile chemicals may be responsible for the higher summer n-3 content of bovine milk.
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Affiliation(s)
- S A Huws
- Institute of Biological, Environmental, and Rural Sciences (IBERS), Aberystwyth University, Aberystwyth, UK
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Huws SA, Mayorga OL, Theodorou MK, Onime LA, Kim EJ, Cookson AH, Newbold CJ, Kingston-Smith AH. Successional colonization of perennial ryegrass by rumen bacteria. Lett Appl Microbiol 2013. [PMID: 23206248 DOI: 10.1111/lam.12033] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
UNLABELLED This study investigated successional colonization of perennial ryegrass (PRG) by the rumen microbiota. PRG grown for 6 weeks in a greenhouse was incubated in sacco in the rumens of three Holstein × Freisian cows over a period of 24 h. PRG incubated within the rumen was subsequently harvested at various time intervals postincubation to assess colonization over time. DGGE-based dendograms revealed the presence of distinct primary (0-2 h) and secondary (4 h onwards) attached bacterial communities. Moving window analysis, band number and Shannon-Wiener diversity indices suggest that after 2 h a proportion of primary colonizing bacteria detach, to be replaced with a population of secondary colonizing bacteria between 2 and 4 h after entry of PRG into the rumen. Sequencing and classification of bands lost and gained between 2 and 4 h showed that the genus Prevotella spp. was potentially more prevalent following 4 h of incubation, and Prevotella spp. 16S rDNA-based QPCR supported this finding somewhat, as 2- to 4-h Prevotella QPCR data were greater but not significantly so. Low-temperature scanning electron microscopy showed that attached bacteria were predominantly enveloped in extracellular polymeric substances. In conclusion, colonization of fresh PRG is biphasic with primary colonization completed within 2 h and secondary colonization commencing after 4 h of attachment in this study. SIGNIFICANCE AND IMPACT OF THE STUDY We investigated, over a 24-h period in sacco, whether attachment of rumen microbiota to perennial ryegrass (PRG) showed successional changes in diversity. Knowledge of the bacterial species that attach to PRG over time may aid our understanding of the temporal function of the attached microbiota and ultimately permit the development of novel strategies for improving animal production to meet the future demands for meat and milk.
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Affiliation(s)
- S A Huws
- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Aberystwyth, UK
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Lee MRF, Huws SA, Scollan ND, Dewhurst RJ. Effects of Fatty Acid Oxidation Products (Green Odor) on Rumen Bacterial Populations and Lipid Metabolism In Vitro. J Dairy Sci 2007; 90:3874-82. [PMID: 17638998 DOI: 10.3168/jds.2007-0191] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This study investigated the effects of green odor fatty acid oxidation products (FAOP) from cut grass on lipid metabolism and microbial ecology using in vitro incubations of rumen microorganisms. These compounds have antimicrobial roles in plant defense, and we hypothesized that they may influence rumen lipid metabolism. Further, they may partially explain the higher levels of conjugated linoleic acid cis-9, trans-11 in milk from cows grazing pasture. The first of 2 batch culture experiments screened 6 FAOP (1 hydroperoxide, 3 aldehydes, 1 ketone, and 1 alcohol) for effects on lipid profile, and in particular C(18) polyunsaturated fatty acid biohydrogenation. Experiment 2 used the most potent FAOP to determine effects of varying concentrations and identify relationships with effects on microbial ecology. Batch cultures contained anaerobic buffer, rumen liquor, and FAOP to a final concentration of 100 microM for experiment 1. Triplicates for each compound and controls (water addition) were incubated at 39 degrees C for 6 h. The hydroperoxide (1,2-dimethylethyl hydroperoxide, 1,2-DMEH) and the long chain aldehyde (trans-2 decenal) had the largest effects on lipid metabolism with significant increases in C(18:0) and C(18:1) trans and reductions in C(12:0), C(14:0), C(16:0), C(18:1) cis, C(18:2n-6), C(18:3n-3), C(20:0) and total branch and odd chain fatty acids compared with the control. This was associated with significantly higher biohydrogenation of C(18) polyunsaturated fatty acid. In experiment 2, 1,2-DMEH was incubated at 50, 100, and 200 microM for 2, 6, and 24 h. Increasing 1,2-DMEH concentration resulted in a significant linear increase in C(18:1) trans-10, trans-11, conjugated linoleic acid, and C(18:0) and a linear decrease in C(18:2n-6) and C(18:3n-3), although the scale of this response declined with time. Microbial profiling techniques showed that 1,2-DMEH at concentrations of 100 and 200 microM changed the microbial community from as early as 2 h after addition, though microbial biomass remained similar. These preliminary studies have shown that FAOP can alter fatty acid biohydrogenation in the rumen. This change was associated with changes in the microbial population that were detected through DNA and branched- and odd-chain fatty acid profiling approaches.
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Affiliation(s)
- M R F Lee
- Institute of Grassland and Environmental Research, Plas Gogerddan, Aberystwyth, SY23 3EB, United Kingdom.
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Abstract
AIMS To determine the impact of protozoan grazing on the population dynamics of a multispecies bacterial biofilm community. METHODS AND RESULTS Grazing by Acanthamoeba castellanii and the ciliate Colpoda maupasi upon biofilm and planktonic communities, composed of Klebsiella pneumoniae, Pseudomonas fluorescens and Staphylococcus epidermidis was investigated. Biofilms were formed using glass coverslips, held in a carousel device, as substrata for biofilm formation or in glass flow cells. The predatory effects of the amoeba were generally confined to the biofilm, where grazing rates corresponded to losses from the biofilm equivalent to ca 30,000 biofilm cells cm(-2) h(-1), with the amoeba becoming an integral part of the community. C. maupasi reduced the thickness of mature multispecies biofilms at steady-state from 500 to <200 microm. CONCLUSIONS We report that the presence of the protozoa A. castellanii and C. maupasi markedly influence population dynamics within defined biofilm communities. SIGNIFICANCE AND IMPACT OF THE STUDY The current study dispels the popular opinion that biofilms are protected against predation by protozoa. A. castellanii clearly has the capacity to graze mixed biofilm communities and to become integrally associated with them, whereas the ciliate C. maupasi reduced biofilm thickness by up to 60%.
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Affiliation(s)
- S A Huws
- School of Pharmacy and Pharmaceutical Sciences, University of Manchester, Manchester, UK
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