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Nedenia Bonvino Stafuzza Eliane Vianna da Costa e Silva Rafael Medeiros de Oliveira Silva Luiz Carlos Cesar da Costa Filho Fernanda Battistotti Barbosa Gustavo Guerino Macedo Raysildo B. Lobo Fernando Baldi 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2020,137(2):234-244
Selection for bulls that would reach puberty early reduces the generation interval and increases fertility and herd productivity. Despite its economic importance, there are few QTL associated with age at puberty described in the literature. In this study, a weighted single-step genome-wide association study was performed to detect genomic regions and putative candidate genes related to age at puberty in young Nelore bulls. Several protein-coding genes related to spermatogenesis functions were identified within the genomic regions that explain more than 0.5% of the additive genetic variance for age at puberty in Nelore bulls, such as ADAM11, BRCA1, CSNK2A, CREBBP, MEIOC, NDRG2, NECTIN3, PARP2, PARP9, PRSS21, RAD51C, RNASE4, SLX4, SPA17, TEX14, TIMP2 and TRIP13 gene. Enrichment analysis by DAVID also revealed several GO terms related to spermatogenesis such as DNA replication (GO:0006260), male meiosis I (GO:0007141), double-strand break repair (GO:0006302), base excision repair (GO:0006284), apoptotic process (GO:0006915), cell–cell adhesion (GO: 0098609) and focal adhesion (GO:0005925). The heritability for age at puberty shows that this trait can be improved based on traditional EBV selection. Adding genomic information to the system helps to elucidate genes and molecular mechanisms controlling the sexual precocity and could help to predict sexual precocity in Nelore bulls with greater accuracy at younger age, which would speed up the breeding programme for this breed. 相似文献
33.
? Composts have the potential to provide biological control of plant diseases. Foliar as well as root pathogens may be affected. Many factors control these effects. Heat exposure during composting kills or inactivates pathogens if the process is monitored properly. Unfortunately, most biocontrol agents also are killed by this heat treatment. Thus, biocontrol agents must recolonize composts after peak heating. The raw feedstock, the environment in which the compost is produced, as well as conditions during curing and utilization determine the potential for recolonization by this microflora and disease suppression. Controlled inoculation of compost with biocontrol agents has proved necessary to induce consistent levels of suppression on a commercial scale. The decomposition level (stability) of composts also affects suppressiveness. Immature composts serve as food for pathogens and increase disease even when biocontrol agents are present. On the other hand, excessively stabilized organic matter does not support the activity of biocontrol agents. Composts also may induce detrimental effects. For example, chemical factors may negate suppressiveness. Salinity and the concentration of nitrogen in composts are principal chemical factors to be considered. 相似文献
34.
Silva Adriene Aparecida Pereira Fernanda Aparecida Castro de Souza Elaine Aparecida de Oliveira Denilson Ferreira Nobre Danúbia Aparecida Costa Macedo Willian Rodrigues Silva Geraldo Humberto 《European journal of plant pathology / European Foundation for Plant Pathology》2022,163(4):865-874
European Journal of Plant Pathology - Essential oils (EOs) of Ocimum gratissimum and Syzygium aromaticum and eugenol were applied to common bean seeds harvested from plants with anthracnose... 相似文献
35.
Marcella Teixeira Linhares Joo Pedro Scussel Feranti Gabriela Pesamosca Coradini Letícia Reginato Martins Arthur Rodrigues Martins Vanessa Zanchi Sarturi Felipe Baldissarella Gavioli Marco Augusto Machado Silva Michelli Westphal de Ataíde Luciana Gonalves Teixeira Maurício Veloso Brun 《Veterinary surgery : VS》2019,48(Z1):O74-O82
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Geovane R. Oliveira Willian K. Oliveira Carla Andrade Antonio Diego B. Melo Fernando B. Luciano Renata E. F. Macedo Leandro B. Costa 《Journal of animal physiology and animal nutrition》2019,103(3):756-765
This study evaluated the antimicrobial effect of essential oils (EO) and organic acids (OA) against Salmonella Enteritidis in chicken feed and during an in vitro model that mimics the chicken digestive process. The minimal inhibitory concentration (MIC) of allyl isothiocyanate (AITC), carvacrol (CV), propionic acid (PROP) and caproic acid (CAP) were individually determined. Then, based on the MICs of each compound, combinations of EOs and/or OAs were tested to evaluate their synergic antimicrobial effect. The synergic effect of AITC and CAP was the most efficient against the bacterial strain tested. Commercial feed was inoculated with a 5‐strain cocktail of S. Enteritidis and treated with different doses of AITC + CAP to evaluate their effect on the growth/survival of the pathogen. In addition, the simulated digestion model was used to access the antimicrobial effect of AITC + CAP added to the feed towards S. Enteritidis and Lactobacillus plantarum. Synergistic effect was found between AITC (0.065 mM) and CAP (17.5 mM) against S. Enteritidis in chicken feed, where S. Enteritidis was reduced to undetectable levels (<1.00 log CFU/g). AITC (1.95 mM) + CAP (45 mM) also decreased (p < 0.05) the population of S. Enteritidis in the simulated digestion, while the growth of L. plantarum was not affected. Therefore, the addition of AITC + CAP in feed might be a potential natural antimicrobial able to prevent economic losses caused for Salmonella in chicken. 相似文献
38.
Tiago S. Nascimento Isabelle S. M. Silva Maria Cecília M. A. Alves Bruna B. Gouveia Lara Mariane R. Barbosa Taís J. S. Macedo Jamile M. S. Santos Alane P. O. Monte Maria Helena T. Matos Francine F. Padilha Isabel B. Lima‐Verde 《Reproduction in domestic animals》2019,54(1):31-38
This study aimed to characterize the hydroethanolic extract of red propolis (HERP) and nanoparticles containing HERP for using as an additive in the culture medium of isolated ovine preantral follicles. HERP was characterized by high‐performance liquid chromatography (HPLC) and determination of flavonoid content, and the nanoparticles by the mean particle diameter, polydispersity index (PI) and encapsulation efficiency (EE). The effect of HERP (10 and 20 ηg/ml—HERP10 and HERP20 groups) and nanoparticles (NP10 and NP20 groups) on isolated secondary follicles cultured in vitro for 12 days was observed by morphological evaluation, oxidative stress markers (reactive oxygen species—ROS and glutathione—GSH) and active mitochondria. HPLC showed formononetin as the major compound in the HERP (63.92 ± 0.21 μg/mL). The content of flavonoids ranged from 2.14% to 11.00%. The nanoparticles showed mean diameter of 287.5 ± 3.9 and 479 ± 18.1 ηm; PI of 0.117 ± 0.018 and 0.316 ± 0.039; and EE of 67.15% and 41%, respectively, for the NP10 and NP20 groups. After 12 days of culture, HERP20 and NP20 increased (p < 0.05) the percentage of normal follicles compared to NP10. HERP20 showed significantly higher percentages of antrum formation than control medium (MEM) and NP10 (p < 0.05). HERP20 also showed an increase (p < 0.05) in mitochondrial activity compared to the other treatments, except NP20 (p > 0.05), and increased GSH levels (p < 0.05) compared to MEM and HERP10. In conclusion, use of HERP (20 ηg/ml) on in vitro culture of isolated ovine preantral follicles can increase antrum formation, mitochondrial activity and GSH levels. 相似文献
39.
Cortinhas Cristina Simões Botaro Bruno Garcia de Macedo Susana Nori dos Santos Marcos Veiga 《Tropical animal health and production》2018,50(7):1605-1610
Tropical Animal Health and Production - This study identified the association of management practices and herd characteristics with milk quality of bulk tanks in southeastern, Brazil. Milk samples... 相似文献
40.
Daniele Soares Barroso Neves Robério Rodrigues Silva Fabiano Ferreira da Silva Laize Vieira Santos George Abreu Filho Sinvaldo Oliveira de Souza Marceliana da C. Santos Weder Jansen Rocha Ana Paula Gomes da Silva Mateus de Melo Lisboa Maria Magna Silva Pereira Venício Macedo Carvalho 《Tropical animal health and production》2018,50(7):1411-1416
The aim of this study was to evaluate the effect of increasing concentrate supplementation levels on the intake, nutrient digestibility, and performance of crossbred steers during the dry period of the year. The experiment was developed on Princesa do Mateiro farm, in the municipality of Ribeirão do Largo, located in the southwest region of Bahia State, Brazil. Forty uncastrated male crossbred (½ Holstein-Zebu) steers with an average body weight (BW) of 232.55?±?24.97 kg were distributed into four treatments in a completely randomized design with ten replicates. The animals were managed in an experimental area formed by Brachiaria brizantha cv. Marandu, in an intermittent grazing system. Treatments consisted of the following supplementation levels: 0.2% BW, with 60% crude protein (CP); 0.3% BW, with 40% CP; 0.4% BW, with 30% CP; and 0.5% BW, with 24% CP. The intakes of forage dry matter in kg/day and %BW and neutral detergent fiber corrected for ash and protein (NDFap) in %BW decreased linearly, whereas the intake of non-fibrous carbohydrates corrected for ash and protein in kg/day and average daily gain increased linearly. Therefore, the use of supplementation at 0.5% BW (24% crude protein) to provide gains of up to 0.500 kg/day is recommended for grazing steers during the post-weaning period in the dry season of the year. 相似文献