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Bailoni L, Carraro L, Cardin M, Cardazzo B. Active Rumen Bacterial and Protozoal Communities Revealed by RNA-Based Amplicon Sequencing on Dairy Cows Fed Different Diets at Three Physiological Stages. Microorganisms 2021; 9:754. [PMID: 33918504 PMCID: PMC8066057 DOI: 10.3390/microorganisms9040754] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/29/2021] [Accepted: 04/01/2021] [Indexed: 12/12/2022] Open
Abstract
Seven Italian Simmental cows were monitored during three different physiological stages, namely late lactation (LL), dry period (DP), and postpartum (PP), to evaluate modifications in their metabolically-active rumen bacterial and protozoal communities using the RNA-based amplicon sequencing method. The bacterial community was dominated by seven phyla: Proteobacteria, Bacteroidetes, Firmicutes, Spirochaetes, Fibrobacteres, Verrucomicrobia, and Tenericutes. The relative abundance of the phylum Proteobacteria decreased from 47.60 to 28.15% from LL to DP and then increased to 33.24% in PP. An opposite pattern in LL, DP, and PP stages was observed for phyla Verrucomicrobia (from 0.96 to 4.30 to 1.69%), Elusimicrobia (from 0.32 to 2.84 to 0.25%), and SR1 (from 0.50 to 2.08 to 0.79%). The relative abundance of families Succinivibrionaceae and Prevotellaceae decreased in the DP, while Ruminococcaceae increased. Bacterial genera Prevotella and Treponema were least abundant in the DP as compared to LL and PP, while Ruminobacter and Succinimonas were most abundant in the DP. The rumen eukaryotic community was dominated by protozoal phylum Ciliophora, which showed a significant decrease in relative abundance from 97.6 to 93.9 to 92.6 in LL, DP, and PP, respectively. In conclusion, the physiological stage-dependent dietary changes resulted in a clear shift in metabolically-active rumen microbial communities.
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Affiliation(s)
- Lucia Bailoni
- Department of Comparative Biomedicine and Food Science (BCA), University of Padova, Viale dell’Universitá 16, 35020 Legnaro, PD, Italy; (L.C.); (M.C.); (B.C.)
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Shakeri P, Reiasi A, Tahmasbi R. The effect of pistachio by-product extracts treatment in protecting soybean meal and canola meal protein from rumen microbial degradation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:5222-5229. [PMID: 32520392 DOI: 10.1002/jsfa.10572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 03/25/2020] [Accepted: 06/10/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND The industrial de-hulling of fresh pistachio generates a large quantity of pistachio by-products (PBP). The present study aimed to investigate the effects of treating soybean meal (SBM) and canola meal (CM) with tannin extracts derived from PBP on the protein fractions according to the Cornell Net Carbohydrates and Protein System (CNCPS), rumen degradability, and ruminal and post-ruminal crude protein (CP) disappearance in an in situ trials using three fistulated steers. The extracts of PBP were obtained via different solvents and then added to SBM and CM, so that the final concentrations of added tannins were 0, 5 and 10 g kg-1 dry matter. RESULTS The CNCPS soluble proteins (fractions A + B1 ) of CP and B1 fraction of CP were lower (P < 0.01) in SBM and CM treated with PBP extracts than untreated meals. Treating SBM with different PBP extracts (except 5 g kg-1 tannin water extract) and CM with 5 g kg-1 tannin water extract and 10 g kg-1 tannin ethanol extract decreased (P < 0.01) ruminal disappearance of CP. From the in situ results, the rapidly degradable fraction (a) of CP decreased (P < 0.01) by treating SBM with different PBP extracts and CM with 5 and 10 g kg-1 tannin water extracts, whereas the slowly degradable fraction (b) of CP remained unchanged in SBM. Treatment of SBM and CM with PBP extracts decreased (P < 0.01) the effective degradability of crude protein estimated with different outflow rates. CONCLUSION Some of the tannin extracts derived from PBP by water, ethanol and methanol could be effective with respect to protein protection of SBM and CM from degradation in the rumen; however, the use of tannin from water extracts can be more economical and practical. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Pirouz Shakeri
- Animal Science Research Department, Kerman Agricultural and Natural Resource Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Kerman, Iran
| | - Ahmad Reiasi
- Department of Animal Science, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
| | - Reza Tahmasbi
- Department of Animal Science, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran
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Correddu F, Lunesu MF, Buffa G, Atzori AS, Nudda A, Battacone G, Pulina G. Can Agro-Industrial By-Products Rich in Polyphenols be Advantageously Used in the Feeding and Nutrition of Dairy Small Ruminants? Animals (Basel) 2020; 10:ani10010131. [PMID: 31947543 PMCID: PMC7022336 DOI: 10.3390/ani10010131] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/09/2020] [Accepted: 01/10/2020] [Indexed: 12/20/2022] Open
Abstract
Simple Summary In the Mediterranean area, where dairy sheep and goats are widespread, the use of by-products in the diet of small ruminants is an ancient practice. Today the great availability of industrial by-products produced at the local level (e.g., grape, olive, tomato and myrtle residues), appears to be a promising strategy for reducing competition with human edible foods and the cost of off-farm produced feeds since they are imported worldwide. Moreover, these co-feeds can contribute to reducing the ecological and water footprint associated with crop cultivation. The presence of bioactive compounds, such as polyphenols, confers added value to these materials. Several positive aspects are apparent when such by-products are included in the diets of small dairy ruminants, in particular on ruminal metabolism, animal health, and the quality of derived products. Abstract Recently, the interest in industrial by-products produced at the local level in Mediterranean areas, resulting from fruit and vegetable processes, has increased because of their considerable amounts of bioactive compounds, including polyphenols. In this review, we analyze the most recent scientific results concerning the use of agro-industrial by-products, naturally rich in polyphenols (BPRP), in the diets of small dairy ruminants. Effects on milk production, milk and rumen liquor fatty acid profile, metabolic parameters, and methane production are reviewed. The feed intake and digestibility coefficients were generally depressed by BPRP, even though they were not always reflected in the milk yield. The main observed positive effects of BPRP were on quality of the milk’s FA profile, antioxidant activity in milk and blood, a reduction of rumen ammonia, and, consequently, a reduction of milk and blood urea. The expected beneficial effects of dietary polyphenols in small ruminants were not always observed because of their complex and variable matrices. However, owing to the large quantities of these products available at low prices, the use of BPRB in small ruminant nutrition offers a convenient solution to the valorization of residues arising from agricultural activities, reducing feed costs for farmers and conferring added value to dairy products at the local level, in a sustainable way.
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Sustainability of feeding plant by-products: A review of the implications for ruminant meat production. Anim Feed Sci Technol 2019. [DOI: 10.1016/j.anifeedsci.2019.02.006] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Silva Soares SC, de Lima GC, Carlos Laurentiz A, Féboli A, dos Anjos LA, de Paula Carlis MS, da Silva Filardi R, da Silva de Laurentiz R. In vitro anthelmintic activity of grape pomace extract against gastrointestinal nematodes of naturally infected sheep. Int J Vet Sci Med 2018; 6:243-247. [PMID: 30564603 PMCID: PMC6286422 DOI: 10.1016/j.ijvsm.2018.11.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 11/12/2018] [Accepted: 11/13/2018] [Indexed: 11/23/2022] Open
Abstract
Grape pomace obtained as a byproduct of industrial processing of grapes retains nutrients and substances with anthelmintic potential such as saponins, tannins, and flavonoids. Therefore, this study evaluated the in vitro ovicidal and larvicidal activity of hydroalcoholic grape pomace extract against gastrointestinal nematodes of sheep. The anthelmintic evaluation was performed by in vitro assays with eggs and larvae of nematodes obtained from naturally infected donor sheep. The grape pomace extract showed high in vitro ovicidal and larvicidal activity with LD50 values of 0.30 mg/mL for egg hatching inhibition, 1.01 mg/mL for larval development inhibition and 100% efficacy in larval migration inhibition assays at all concentrations evaluated. The effect of tannins was evaluated by the addition of 50 mg/mL polyvinyl polypyrrolidone to grape pomace extract at the concentration of 12.5 mg/mL. The in vitro ovicidal activity of grape pomace was reduced by only 15% after polyvinyl polypyrrolidone addition, indicating that other phytochemicals also contribute to the ovicidal activity displayed by the extract. Our results demonstrate that grape pomace exhibits in vitro anthelmintic activity, suggesting that, beyond its nutritional potential, this pomace can also be an ally for gastrointestinal nematode control in sheep.
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Affiliation(s)
- Suelen Carolina Silva Soares
- Departamento de Física e Química, Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista, Ilha Solteira, São Paulo 15385-000, Brazil
| | - Gilmar Cotrin de Lima
- Departamento de Biologia e Zootecnia, Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista, Ilha Solteira, São Paulo 15385-000, Brazil
| | - Antonio Carlos Laurentiz
- Departamento de Biologia e Zootecnia, Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista, Ilha Solteira, São Paulo 15385-000, Brazil
| | - Aline Féboli
- Departamento de Física e Química, Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista, Ilha Solteira, São Paulo 15385-000, Brazil
| | - Luciano Alves dos Anjos
- Departamento de Biologia e Zootecnia, Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista, Ilha Solteira, São Paulo 15385-000, Brazil
| | - Matheus Souza de Paula Carlis
- Departamento de Física e Química, Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista, Ilha Solteira, São Paulo 15385-000, Brazil
| | - Rosimeire da Silva Filardi
- Departamento de Biologia e Zootecnia, Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista, Ilha Solteira, São Paulo 15385-000, Brazil
| | - Rosangela da Silva de Laurentiz
- Departamento de Física e Química, Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista, Ilha Solteira, São Paulo 15385-000, Brazil
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Xue M, Sun H, Wu X, Guan LL, Liu J. Assessment of Rumen Microbiota from a Large Dairy Cattle Cohort Reveals the Pan and Core Bacteriomes Contributing to Varied Phenotypes. Appl Environ Microbiol 2018; 84:e00970-18. [PMID: 30054362 PMCID: PMC6146982 DOI: 10.1128/aem.00970-18] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 07/20/2018] [Indexed: 12/14/2022] Open
Abstract
Currently, knowledge on the extent to which rumen microbiota differ in a large population of cattle fed the same diet and whether such differences are associated with animal performance is limited. This study was conducted to characterize the rumen microbiota of a large cohort of lactating Holstein dairy cows (n = 334) that were fed the same diet and raised under the same environment, aiming to uncover linkages between core and pan rumen microbiomes and host phenotypes. Amplicon sequencing of the partial 16S rRNA gene identified 391 bacterial genera in the pan bacteriome and 33 genera in the core bacteriome. Interanimal variation existed in the pan and core bacteriomes, with the effect of lactation stage being more prominent than that of parity (the number of pregnancies, ranging from 2 to 7) and sire. Spearman's correlation network analysis revealed significant correlations among bacteria, rumen short-chain fatty acids, and lactation performance, with the core and noncore genera accounting for 53.9 and 46.2% of the network, respectively. These results suggest that the pan rumen bacteriome together with the core bacteriome potentially contributes to variations in milk production traits. Our findings provide an understanding of the potential functions of noncore rumen microbes, suggesting the possibility of enhancing bacterial fermentation using strategies to manipulate the core and noncore bacteriomes for improved cattle performance.IMPORTANCE This study revealed the rumen bacteriome from a large dairy cattle cohort (n = 334) raised under the same management and showed the linkages among the rumen core and pan bacteriomes, rumen short-chain fatty acids, and milk production phenotypes. The findings from this study suggest that the pan rumen bacteriome, together with the core bacteriome, potentially contributes to variations in host milk production traits. Fundamental knowledge on the rumen core and pan microbiomes and their roles in contributing to lactation performance provides novel insights into future strategies for manipulating rumen microbiota to enhance milk production in dairy cattle.
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Affiliation(s)
- Mingyuan Xue
- Institute of Dairy Science, MoE Key Laboratory of Molecular Animal Nutrition, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Huizeng Sun
- Institute of Dairy Science, MoE Key Laboratory of Molecular Animal Nutrition, College of Animal Sciences, Zhejiang University, Hangzhou, China
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada
| | - Xuehui Wu
- Institute of Dairy Science, MoE Key Laboratory of Molecular Animal Nutrition, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Le Luo Guan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada
| | - Jianxin Liu
- Institute of Dairy Science, MoE Key Laboratory of Molecular Animal Nutrition, College of Animal Sciences, Zhejiang University, Hangzhou, China
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Bainbridge ML, Cersosimo LM, Wright ADG, Kraft J. Rumen bacterial communities shift across a lactation in Holstein, Jersey and Holstein × Jersey dairy cows and correlate to rumen function, bacterial fatty acid composition and production parameters. FEMS Microbiol Ecol 2016; 92:fiw059. [PMID: 26985012 DOI: 10.1093/femsec/fiw059] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2016] [Indexed: 01/04/2023] Open
Abstract
Rumen bacteria form a dynamic, complex, symbiotic relationship with their host, degrading forages to provide volatile fatty acids (VFA) and other substrates as energy to the animal. The objectives were to characterize rumen bacteria in three genetic lines of primiparous dairy cattle, Holstein (HO, n = 7), Jersey (JE, n = 8), and HO × JE crossbreeds (CB, n = 7) across a lactation [3, 93, 183 and 273 days in milk (DIM)] and correlate these factors with VFA, bacterial cell membrane fatty acids (FA), and animal production (i.e. milk yield). This study employed Illumina MiSeq (v. 3) to investigate rumen bacterial communities and gas-liquid chromatography/mass spectroscopy to identify bacterial membrane FA. Lactation stage had a prominent effect on rumen bacterial communities, whereas genetics had a lesser effect on rumen bacteria. The FA composition of bacterial cell membranes was affected by both lactation stage and genetics. Few correlations existed between VFA and bacterial communities; however, moderate correlations occurred between milk yield, protein percentage, fat yield and rumen bacterial communities. Positive correlations were found between branched-chain FA (BCFA) in bacterial cell membranes and bacterial genera. In conclusion, bacterial communities and their FA compositions are more affected by stage of lactation than by genetics of dairy cow.
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Affiliation(s)
- Melissa L Bainbridge
- Department of Animal and Veterinary Sciences, The University of Vermont, Burlington, VT 05405, USA
| | - Laura M Cersosimo
- Department of Animal and Veterinary Sciences, The University of Vermont, Burlington, VT 05405, USA
| | - André-Denis G Wright
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, AZ 85721, USA
| | - Jana Kraft
- Department of Animal and Veterinary Sciences, The University of Vermont, Burlington, VT 05405, USA
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Shakeri P. Pistachio by-product as an alternative forage source for male lambs: Effects on performance, blood metabolites, and urine characteristics. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2015.11.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Pomegranate seed pulp, pistachio hulls, and tomato pomace as replacement of wheat bran increased milk conjugated linoleic acid concentrations without adverse effects on ruminal fermentation and performance of Saanen dairy goats. Anim Feed Sci Technol 2015. [DOI: 10.1016/j.anifeedsci.2015.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Mokhtarpour A, Naserian AA, Pourmollae F, Ghaffari MH. Effect of treating alfalfa silage with pistachio by-products extract on Saanen dairy goats performance and microbial nitrogen synthesis. J Anim Physiol Anim Nutr (Berl) 2015; 100:758-67. [PMID: 26336063 DOI: 10.1111/jpn.12384] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Accepted: 07/10/2015] [Indexed: 11/27/2022]
Abstract
A lactation experiment was conducted to determine the influence of addition of pistachio by-products extract (PBE) to alfalfa silage (AS) on performance, rumen fermentation, milk yield and composition, and microbial nitrogen synthesis. Eight multiparous dairy goats (1.8 ± 0.25 kg of milk yield) were used in a replicated 4 × 4 Latin square design with a 2 × 2 factorial arrangement of treatments to compare two types of AS (supplemented with or without PBE) with two levels of dietary crude protein (14% vs. 16% CP). Dietary treatments were (i) AS with 14% CP of DM diet without PBE (14%CP-PBE), (ii) AS with 14% CP of DM diet with PBE (14%CP + PBE), (iii) AS with 16% CP of DM diet without PBE (16%CP-PBE) and (iv) AS with 16% CP of DM diet with PBE (16%CP + PBE). PBE was sprayed on fresh alfalfa at a ratio of 500 ml/kg alfalfa DM to get the final concentration of 1% tannin as tannic acid equivalent on DM basis. Intake of CP was greater (p < 0.01) in goats fed 16% CP diets than those fed 14% CP diets, regardless of PBE supplementation. Supplementation of PBE tended to decrease (p = 0.09) rumen NH3 -N concentration regardless of the level of CP in the diet. Supplementation of PBE tended (p = 0.09) to decrease total purine derivatives regardless of the level of CP in the diet with no significant change in microbial nitrogen supply. Efficiency of microbial nitrogen synthesis (EMNS) had a tendency (p = 0.07) to decrease in PBE supplemented diets. There was also a tendency (p = 0.10) for more EMNS in 14% CP fed goats than those fed 16% CP diets. Therefore, AS supplemented with PBE may lead to less concentration of ruminal NH3 -N because of decreased degradation of CP by rumen micro-organisms in response to pistachio by-products tannins.
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Affiliation(s)
- A Mokhtarpour
- Research Center of Special Domestic Animals, University of Zabol, Zabol, Iran.,Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - A A Naserian
- Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - F Pourmollae
- Agricultural Jihad Organization of Khorasan-Razavi, Mashhad, Iran
| | - M H Ghaffari
- Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
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Naserian AA, Staples CR, Ghaffari MH. Effects of replacing wheat bran by pistachio skins on feed intake, nutrient digestibility, milk yield, milk composition and blood metabolites of dairy Saanen goats. J Anim Physiol Anim Nutr (Berl) 2015; 100:256-63. [PMID: 26174030 DOI: 10.1111/jpn.12362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 05/29/2015] [Indexed: 11/27/2022]
Abstract
The objective of this study was to investigate the effect of pistachio skins (PiS) as a replacement of wheat bran on feed intake, nutrient digestibility, milk yield, milk composition and blood metabolites of dairy Saanen goats. Eight multiparous lactating Saanen goats (55 ± 7.2 days post-partum, 45 ± 2 kg body weight) were randomly assigned to one of the four dietary treatments arranged in a replicated 4 × 4 Latin square design. The dietary treatments were 1) 0 g/kg PiS and 210 g/kg wheat bran in the TMR (0PiS), 2) 70 g/kg PiS and 140 g/kg wheat bran in the TMR (7PiS), 3) 140 g/kg PiS and 70 g/kg wheat bran in the TMR (14PiS) and 4) 210 g/kg PiS and 0 g/kg wheat bran in the TMR (21PiS). The trial consisted of four 21-day periods, each composed of 14 days adaptation and 7 days data collection. Dry matter intake (p < 0.05) and crude protein digestibility (p < 0.01) increased linearly with increasing PiS proportions in the diet. Increasing the proportion of PiS in the diet caused a quadratic increase in apparent digestibility of dry matter (p < 0.05), and tended (p = 0.05) to increase quadratically organic matter, and ether extract digestibility. Replacing wheat bran with PiS in the diet had no effects on milk yield, whereas milk fat concentration increased linearly (p < 0.01) with increasing inclusion of PiS in the diet. As the dietary proportion of PiS increased, ruminal pH tended (p = 0.07) to increase linearly, whereas ammonia-N concentration declined in the rumen. Plasma concentrations of glucose and BUN remained unaffected, whereas triglycerides (p < 0.05) and cholesterol (p < 0.01) concentrations increased linearly with increasing inclusion of PiS in the diet. It was concluded that PiS based on local ingredients can successfully replace wheat bran in diets of dairy goats without detrimental effects on feed intake, nutrient digestibility and milk production.
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Affiliation(s)
- A A Naserian
- Department of Animal Sciences, College of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
| | - C R Staples
- Department of Animal Science, University of Florida, Gainesville, FL, USA
| | - M H Ghaffari
- Department of Animal Sciences, College of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
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Pallara G, Buccioni A, Pastorelli R, Minieri S, Mele M, Rapaccini S, Messini A, Pauselli M, Servili M, Giovannetti L, Viti C. Effect of stoned olive pomace on rumen microbial communities and polyunsaturated fatty acid biohydrogenation: an in vitro study. BMC Vet Res 2014; 10:271. [PMID: 25424901 PMCID: PMC4311430 DOI: 10.1186/s12917-014-0271-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 11/06/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Stoned olive pomace (SOP), which represents approximately 50% of the conversion process of olives to olive oil, is largely not utilised and creates costs for its disposal and has negative environmental impacts. In vitro trial experiments were employed to study the effect of feeds integrated with this bio-waste, which is rich in polyphenols, on rumen biohydrogenation, using sheep rumen liquor as inoculum. RESULTS Fatty acid (FA) analysis and a polymerase chain reaction denaturing gradient gel electrophoresis (PCR-DGGE) approach aimed at characterising the microbial community indicated that including SOP in feeds at the level of 50 g/kg and 90 g/kg induced changes in the FA profile and microbial populations. The simultaneous decrease of Butyrivibrio proteoclasticus and accumulation of vaccenic acid was observed. A depression in the populations of Neisseria weaveri, Ruminobacter amylophilus and other unclassified bacteria related to members of the Lachnospiraceae and Pasteurellaceae families was detected, suggesting that these microbial groups may be involved in rumen biohydrogenation. CONCLUSIONS Supplementation of feeds with SOP alters the rumen bacterial community, including bacteria responsible for the hydrogenation of vaccenic acid to stearic acid, thereby modifying the FA profile of the rumen liquor. Hence, a use of SOP aimed to produce meat or dairy products enriched in functional lipids can be hypothesised.
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Affiliation(s)
- Grazia Pallara
- Dipartimento di Scienze delle Produzioni Agro-alimentari e dell'Ambiente, Università di Firenze, Piazzale delle Cascine 18, 50144, Firenze, Italy.
| | - Arianna Buccioni
- Dipartimento di Scienze delle Produzioni Agro-alimentari e dell'Ambiente, Università di Firenze, Piazzale delle Cascine 18, 50144, Firenze, Italy.
| | - Roberta Pastorelli
- Centro di Ricerca per l'Agrobiologia e la Pedologia, Consiglio per la Ricerca e la Sperimentazione in Agricoltura, Piazza Massimo D'Azeglio 30, 50121, Firenze, Italy.
| | - Sara Minieri
- Dipartimento di Scienze delle Produzioni Agro-alimentari e dell'Ambiente, Università di Firenze, Piazzale delle Cascine 18, 50144, Firenze, Italy.
| | - Marcello Mele
- Dipartimento di Scienze Agrarie, Alimentari e Agro-ambientali, Università di Pisa, Via del Borghetto 80, 56124, Pisa, Italy.
| | - Stefano Rapaccini
- Dipartimento di Scienze delle Produzioni Agro-alimentari e dell'Ambiente, Università di Firenze, Piazzale delle Cascine 18, 50144, Firenze, Italy.
| | - Anna Messini
- Dipartimento di Scienze delle Produzioni Agro-alimentari e dell'Ambiente, Università di Firenze, Piazzale delle Cascine 18, 50144, Firenze, Italy.
| | - Mariano Pauselli
- Dipartimento di Biologia Applicata, Università di Perugia, Borgo XX Giugno 74, 06121, Perugia, Italy.
| | - Maurizio Servili
- Dipartimento di Scienze Economico-Estimative e degli Alimenti, Università di Perugia, Borgo XX Giugno 74, 06121, Perugia, Italy.
| | - Luciana Giovannetti
- Dipartimento di Scienze delle Produzioni Agro-alimentari e dell'Ambiente, Università di Firenze, Piazzale delle Cascine 18, 50144, Firenze, Italy.
| | - Carlo Viti
- Dipartimento di Scienze delle Produzioni Agro-alimentari e dell'Ambiente, Università di Firenze, Piazzale delle Cascine 18, 50144, Firenze, Italy.
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