População de protozoários ruminais em novilhos zebuínos alimentados com ou sem volumoso

Nigri, Ana Carolina; Ribeiro, Izabella Carolina Oliveira; Vieira, Estéfano Aparecido; Silva, M.L.F.; Virgínio-Júnior, G.F; Abrão, Flávia Oliveira; Geraseev, Luciana Castro; Duarte, Eduardo Robson

doi:10.1590/1678-4162-9009

Cited by 5 publications

(5 citation statements)

References 22 publications

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“…The acid pH of the rumen reduced large ciliates in cattle fed without roughage. (Nigri et al, 2017), for Diplodinium spp (5.65 %), Buetschilia spp (6.49 %) and Eremoplastron spp (3.74 %). Considering the activity of xylanases and carboxymethyl celluloses among different species of rumen protozoa, a set of carboxymethyl cellulases and xylanases is produced by the large ciliates Diplodinium, Eremoplastron and Buetschilia, this refers to the results found by (Béra-Maillet et al, 2005) Also researching Holstein calves fed with Alfalfa and concentrate, recorded a higher frequency of this protozoa genus.…”

Section: Discussionmentioning

confidence: 96%

“…Beef cattle fed Straw, with high maturation level presented higher concentration of the rumen protozoa than those fed high grain and without forage. The acid pH of the rumen reduced large ciliates in cattle fed without roughage (Nigri et al, 2017). Researchers demonstrated hemicellulolytic and cellulolytic activity in the rumen ciliates, especially for the group of large Entodinium (Nigri et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…The acid pH of the rumen reduced large ciliates in cattle fed without roughage (Nigri et al, 2017). Researchers demonstrated hemicellulolytic and cellulolytic activity in the rumen ciliates, especially for the group of large Entodinium (Nigri et al, 2017). Principally the large protozoa may colonize fiber fragments and directly ingest plant tissues favoring the action of cellulolytic bacteria (Williams et al, 1997).…”

Section: Discussionmentioning

confidence: 99%

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Rumen Protozoa of adult bovine during autumn in the east of Algeria

Fares

Rahmoun

Lieshchova

2019

TAVM

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The two main pregastric compartiments of ruminants: rumen and reticulum work as anaerobic fermenter which allows them to use energetic and nitrogen substrates which are indigestible by monograstric animals. They have a major importance in this fermenter, also these microbes : bacteria, protozoa and fungi, on the degradation of cell-wall carbohydrates: cellulose, hemicelluloses, pectic substances, on nitrogen digestion and finally on the utilisation of the major minerals and trace elements. The objective of this study is to identify and quantify the protozoa populations in the rumen of Algerian bovines local breed, adult animals living in a relatively humid climate, basic ration based on straw and pastures during hot days. Whereas in cold weather rations are based on straw, cereals and grass forage. Usually not 2 to 5 × 10 6 ml of rumen containing organisms however, under certain feeding conditions, they represent at least 50 % of the rumen microbial biomass. Due to the difficulties in cultivate in vitro, their role and their metabolism are less known than those of bacteria. Ciliated protozoa are capable of transforming a large number of food and bacterial constituents in metabolites and cellular compounds which will then be used by the host animal. The importance of these activities is however still very controversial since in the absence of protozoa in the rumen, Isolation carried out on rumen fluid sampled of 20 cows. Rumen fluid was diluted in formaldehyde 10 % solution, and distributed in Sedgewick Rafter chamber. Then observed in optical microscope using Lugol's iodine coloration. Classified in three genders according to size. 11 different genders were identified; a considerable population of rumen protozoa was identified and classified for first time on Algerian local breed (Atlas).

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Rumen Protozoa of adult bovine during autumn in the east of Algeria

Fares

Rahmoun

Lieshchova

2019

TAVM

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“…Nigri et al [34] carried out a study with 50 Nelore cattle with the aim of assessing the population of protozoa in the rumen. The animals were divided into two groups, identified as G1 and G2.…”

Section: Protozoamentioning

confidence: 99%

A Review of the Rumen Microbiota and the Different Molecular Techniques Used to Identify Microorganisms Found in the Rumen Fluid of Ruminants

Silva,

Silva

et al. 2024

Animals

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Variations in environments, including climate, diet, and agricultural practices, significantly impact the composition and microbial activity. A profound understanding of these adaptations allows for the improvement of nutrition and ruminant production. Therefore, this review aims to compile data from the literature on the rumen microbiota and molecular techniques for identifying the different types of microorganisms from the rumen fluid of ruminants. Analyzing the literature on rumen microbiology in different ruminants is complex due to microbial interactions, influenced by the environment and nutrition of these animals. In addition, it is worth noting that the genera of protozoa and fungi most evident in the studies used in this review on the microbiology of rumen fluid were Entodinium spp. and Aspergillus spp., respectively, and Fibrobacter spp. for bacteria. About the techniques used, it can be seen that DNA extraction, amplification, and sequencing were the most cited in the studies evaluated. Therefore, this review describes what is present in the literature and provides an overview of the main microbial agents in the rumen and the molecular techniques used.

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“…Com a ingestão de grânulos de amido, os protozoários diminuem a taxa de degradação no rúmen (William;Coleman, 1992), desacelerando o processo de fermentação e prevenindo queda no pH ruminal. Em dietas sem forragem e com alto concentrado o número de protozoários ciliados é menor, mas ainda existe (Nigri et al, 2017), consequentemente, eles podem ajudar a melhorar o ambiente ruminal.…”

Section: Fermentação Ruminalunclassified

Uso do bicarbonato de sódio e da casca de soja em dietas sem forragem para terminação de cordeiros confinados

Vicente¹

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População de protozoários ruminais em novilhos zebuínos alimentados com ou sem volumoso

Abstract: ABSTRACT

Cited by 5 publications

References 22 publications

Rumen Protozoa of adult bovine during autumn in the east of Algeria

Rumen Protozoa of adult bovine during autumn in the east of Algeria

A Review of the Rumen Microbiota and the Different Molecular Techniques Used to Identify Microorganisms Found in the Rumen Fluid of Ruminants

Uso do bicarbonato de sódio e da casca de soja em dietas sem forragem para terminação de cordeiros confinados

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