13 documents found, page 1 of 2
Compositional and structural dynamics of the ruminal microbiota in dairy heifer...
Cunha, Camila S.; Marcondes, Marcos I.; Veloso, Cristina M.; Mantovani, Hilário C.; Pereira, Luiz Gustavo R.; Tomich, Thierry R.Heifers emit more enteric methane (CH4) than adult cows and these emissions tend to decrease per unit feed intake as they age. However, common mitigation strategies like expensive high‐quality feeds are not economically feasible for these pre‐production animals. Given its direct role in CH4 production, altering the rumen microbiota is another potential avenue for reducing CH4 production by ruminants. However, t...
Effect of pre- weaning diet on the ruminal archaeal, bacterial, and fungal comm...
Dias, Juliana; Marcondes, Marcos I.; Noronha, Melline F.; Resende, Rafael T.; Machado, Fernanda S.; Mantovani, Hilário C.; Dill- McFarland, Kimberly A.At birth, calves display an underdeveloped rumen that eventually matures into a fully functional rumen as a result of solid food intake and microbial activity. However, little is known regarding the gradual impact of pre-weaning diet on the establishment of the rumen microbiota. Here, we employed next-generation sequencing to investigate the effects of the inclusion of starter concentrate (M: milk-fed vs. MC: m...
Distribution and genetic diversity of bacteriocin gene clusters in rumen microb...
Azevedo, Analice C.; Bento, Cláudia B. P.; Ruiz, Jeronimo C.; Queiroz, Marisa V.; Mantovani, Hilário C.Some species of ruminal bacteria are known to produce antimicrobial peptides, but the screening procedures have mostly been based on in vitro assays using standardized methods. Recent sequencing efforts have made available the genome sequences of hundreds of ruminal microorganisms. In this work, we performed genome mining of the complete and partial genome sequences of 224 ruminal bacteria and 5 ruminal archaea...
Draft genome sequence of Streptococcus equinus (Streptococcus bovis) HC5, a lan...
Azevedo, Analice C.; Bento, Cláudia B. P.; Ruiz, Jeronimo C.; Queiroz, Marisa V.; Mantovani, Hilário C.Streptococcus equinus (Streptococcus bovis) HC5 is a bacteriocinogenic lactic acid bacterium with simple growth requirements. The draft genome sequence of S. equinus HC5 consists of 1,846,241 bp, with a G+C content of 37.04%. In silico analysis indicated that S. equinus HC5 might be useful to control bacteria that are detrimental to livestock animals.
Evaluation of the length of adaptation period for changeover and crossover nutr...
Machado, Marcelo G.; Detmann, Edenio; Mantovani, Hilário C.; Valadares Filho, Sebastião C.; Bento, Cláudia B.P.; Marcondes, Marcos I.It was evaluated the impact of the diet switch on nutritional characteristics and bacterial community composition in cattle fed tropical forage-based diet aiming to establish the minimal length of the adaptation period that could be applied to changeover or crossover design protocols. Twelve rumen-cannulated crossbreed (B. taurus × B. indicus) bovines were used in this experiment (four young bulls, four steers,...
Inhibition of Listeria monocytogenes by a lactic acid bacterium isolated from I...
Carvalho, Ana Andréa Teixeira de; Paula, Rosinéa Aparecida de; Mantovani, Hilário C.; Moraes, Célia Alencar deListeria monocytogenes is an opportunistic psychrotroph foodborne pathogen that has been used as a model organism to study the efficacy of many different preservation methods. This work aimed to test the antilisterial activity of lactic acid bacteria isolated from Italian salami and study the development of resistance. Isolates were obtained from naturally fermented Italian salami and cultures that retained act...
Genome analysis reveals insights of the endophytic Bacillus toyonensis BAC3151 ...
Lopes, Ralf; Cerdeira, Louise; Tavares, Grace S.; Ruiz, Jeronimo C.; Blom, Jochen; Horácio, Elvira C. A.; Mantovani, Hilário C.Diseases caused by phytopathogenic microorganisms account for enormous losses for agribusiness. Although Bacillus species are recognized as being antimicrobial producers and some may provide benefits to plants, the association between Bacillus toyonensis and plants has not been studied. In this study, the whole-genome sequenced endophytic B. toyonensis BAC3151, which has demonstrated antimicrobial activity and ...
Nutritive value and fermentation quality of palisadegrass and stylo mixed silages
Silva, Juliana S. Da; Ribeiro, karina G.; Pereira, Odilon G.; Mantovani, Hilário C.; Cecon, Paulo R.; Pereira, Rosana C.; Silva, Janaina de L.The nutritive value and fermentation quality of palisadegrass (Brachiaria brizantha cv. Xaraes) and stylo (Stylosanthes capitata × S. macrocephala cv. Campo Grande) mixed silages were evaluated. The experiment was analyzed in a factorial scheme (5 × 2) in a completely randomized design using increasing levels of stylo (0, 25, 50, 75 and 100% on a fresh matter basis) on palisadegrass silages, with and without mi...
Parameterization of ruminal fibre degradation in low-quality tropical forage us...
Detmann, Edenio; Paulino, Mário F.; Mantovani, Hilário C.; Valadares Filho, Sebastião de C.; Sampaio, Cláudia B.; Souza, Marjorrie A. deThis work aimed to parameterize the ruminal degradation of neutral detergent fibre (NDF) from low-quality tropical forage using Michaelis–Menten kinetics. The intake, rumen outflow (L), fractional degradation rate (kd), discrete lag (LAG) and effective degradability (ED) of NDF, and the microbial flow of nitrogenous compounds into the small intestine (Nmic) were assessed in two 5 × 5 Latin square experiments by...
Bovicin HC5 inhibits wasteful amino acid degradation by mixed ruminal bacteria ...
Lima, Janaína R.; Ribon, Andréa de O. Barros; Russell, James B.; Mantovani, Hilário C.Streptococcus bovis HC5 produces a broad spectrum lantibiotic (bovicin HC5) that inhibits pure cultures of hyper ammonia-producing bacteria (HAB). Experiments were preformed to see if: (1) S. bovis HC5 cells could inhibit the deamination of amino acids by mixed ruminal bacteria taken directly from a cow, (2) semi-purified bovicin was as effective as S. bovis HC5 cells, and 3) semi-purified and the feed additive...