Cu-ID: https://cu-id.com/1996/v56n2e01 Redirecciones: 170 URL: https://cjascience.com/index.php/CJAS/article/view/1046 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1046 BibTeX: @article{Immune_response_and_blood_biochemistry_in_broilers_fed_tithonia_forage_meal_at_the_finishing_stage, title = {Immune response and blood biochemistry in broilers fed tithonia forage meal at the finishing stage}, author = {Savón, Lourdes and Rodríguez, Bárbara and Vázquez, Ysnagmy and Scull, Idania and Herrera, Magaly and Ruiz, T. E.}, journal = {Cuban Journal of Agricultural Science}, volume = {56}, number = {2}, pages = {}, year = {2022-06-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v56n2e01}, cu_id = {https://cu-id.com/1996/v56n2e01}, abstract = {A total of 40 male broilers EB34, 42 days old, were used to evaluate the effect of Tithonia diversifolia forage meal intake, plant material 10, on indicators of immune response and blood biochemistry. A completely random design was used. The animals were distributed in five treatments with eight repetitions: corn/ soybean concentrate control, 5, 10, 15 and 20 % substitution of the concentrate by tithonia forage meal. For the analysis of the immune response, the lymphoid organs (spleen, Bursa of Fabricius and thymus) were extracted and the relative weights (g/g LW x 100 g of the organs) were determined. Blood was extracted from the jugular vein and serum indicators of blood biochemistry, cholesterol, glucose, triglycerides, total protein, albumin, alanine amino transferase enzymes, and aspartate amine transferase and uric acid were analyzed. From the biological point of view (P=0.0593) lower relative weight of the spleen was found for the chickens that received 20 % tithonia forage meal (0.13, 0.12, 0.12, 0.13 and 0.07 g/g LW x100) for 0, 5, 10, 15 and 20 % substitution of corn/soybean by tithonia forage meal plant material 10, respectively. The intake levels of tithonia forage meal in broilers did not influence on the indicators of blood biochemistry, with the exception of uric acid, which increased with 15 % and 20 % substitution. These results suggest the possibility of using Tithonia diversifolia forage meal plant material 10, in a corn/soybean diet up to levels of 10 % for broilers in the finishing stage, without causing damage to the animals health.Key words: Tithonia diversifolia, forage meal, health, birds.}, }
Cu-ID: https://cu-id.com/1996/v56n2e07 Redirecciones: 194 URL: https://cjascience.com/index.php/CJAS/article/view/1048 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1048 BibTeX: @article{Digestive_and_carcass_indicators_of_Rhode_Island_Red_chickens,_which_intake_processed_Mucuna_pruriens,_in_two_rearing_systems._Technical_note, title = {Digestive and carcass indicators of Rhode Island Red chickens, which intake processed Mucuna pruriens, in two rearing systems. Technical note}, author = {Martínez, Madeleidy and Sarrmiento, L. and Santos, R. H. and Herrera, Magaly and Londres, Y}, journal = {Cuban Journal of Agricultural Science}, volume = {56}, number = {2}, pages = {}, year = {2022-06-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v56n2e07}, cu_id = {https://cu-id.com/1996/v56n2e07}, abstract = {Digestive and carcass indicators are studied in Rhode Island Red chickens in two rearing systems. A total of 120 animals were used, which intake a diet with 15 % of processed Mucuna pruriens, distributed according to a completely random design. Two treatments were established: rearing in captivity and free, with grazing on native vegetation. A total of 30 birds per treatment were sacrificed. The carcass, gastrointestinal tract, gizzard, and empty small and large intestines were weighed. The weight of the small and large intestine increased 0.72 g/kg of live weight in the animals that had free access to grazing. The rest of the indicators did not differ between treatments. It is concluded that the free rearing of Rhode Island Red chickens, which intake processed Mucuna pruriens, modifies the organ related to fiber digestion. This is due to the intake of native vegetation, and does not influence on carcass yield.Key words: birds, captivity, free, treated mucuna, gastrointestinal tract, carcass yield}, }
Cu-ID: https://cu-id.com/1996/v56n2e03 Redirecciones: 175 URL: https://cjascience.com/index.php/CJAS/article/view/1047 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1047 BibTeX: @article{Selection_of_a_culture_medium_for_the_growth_of_Pichia_guilliermondii_LEVICA-_27_as_activator_additive_of_ruminal_fermentation, title = {Selection of a culture medium for the growth of Pichia guilliermondii LEVICA- 27 as activator additive of ruminal fermentation}, author = {González, Bexy and Sosa, Dailyn and Marrero, Yoandra and García, Yaneisy and Albelo, Nereyda}, journal = {Cuban Journal of Agricultural Science}, volume = {56}, number = {2}, pages = {}, year = {2022-06-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v56n2e03}, cu_id = {https://cu-id.com/1996/v56n2e03}, abstract = {In order to select a non-conventional culture medium for the growth of Pichia guilliermondii LEVICA-27 as an activator additive for ruminal fermentation, two trials were carried out in which YPG medium was used (yeast extract 10 g/L, peptone 10 g/L and glucose 20 g/L) as control medium. In the first, seven culture media were evaluated for yeast growth at 24 hours of fermentation. While in the second, growth kinetics was performed in the selected medium of the first test. In addition, in the latter, the maximum specific growth rate, the biomass doubling time, and the stoichiometric balance of the selected medium were determined. At 24 hours of fermentation, there were not differences between the media studied and the YPG medium (p=0.073). Therefore, the latter can be replaced without affecting the strain growth in 24 h. In the kinetic study, there was a higher microbial concentration at 12 h (P<0.0001) in the medium containing molasses and urea. The maximum specific growth rate was lower (P=0.0260) and the biomass doubling time was higher (P=0.0283) with respect to the control. The selected medium constitutes an adequate option for the production of LEVICA-27, since it allows obtaining good cell concentration, covering the nutritional requirements and includes fewer components in its preparation. This offers economic and operational advantages for obtaining the additive at production scales.Key words: molasses, yeast, fermentation, biomass.}, }
Cu-ID: https://cu-id.com/1996/v56n2e04 Redirecciones: 172 URL: https://cjascience.com/index.php/CJAS/article/view/1050 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1050 BibTeX: @article{ProGas_v1.1:_Program_for_the_preprocessing_and_data_analysis_of_in_vitro_gas_production_of_ruminant_foods._Technical_note, title = {ProGas v1.1: Program for the preprocessing and data analysis of in vitro gas production of ruminant foods. Technical note}, author = {García, Yaneilys and Torres, Mildrey and Rodríguez, R.}, journal = {Cuban Journal of Agricultural Science}, volume = {56}, number = {2}, pages = {}, year = {2022-06-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v56n2e04}, cu_id = {https://cu-id.com/1996/v56n2e04}, abstract = {ProGas v1.1 was developed to support researchers in the preprocessing and data analysis of in vitro gas production of ruminant foods. For the implementation of this program, Microsoft Office Excel 2007 was used. The conversion of data to volume (mL g-1 incOM) was carried out with an established equation. The duration of the gas production phases was estimated by means of the average variation rates and the critical points. A total of six sheets were designed in the program: general, enter pressures, accumulated volume, critical points, graphs and help. It is concluded that the proposed program allowed preparing the experimental data for its subsequent modeling. In addition, the methodology that was applied to estimate the critical points did not require a mathematical model to calculate the duration of the in vitro gas production phases, which facilitated the description of the degradation kinetics of the evaluated foods.Key words: processing, speed, critical points, phases, fermentation}, }
Cu-ID: https://cu-id.com/1996/v56n2e02 Redirecciones: 164 URL: https://cjascience.com/index.php/CJAS/article/view/1045 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1045 BibTeX: @article{Phytobiotic_additives_and_their_effect_on_the_productive_performance_of_pigs, title = {Phytobiotic additives and their effect on the productive performance of pigs}, author = {Caicedo, W. and Chinque, Deisy M. and Grefa, Vanessa J.}, journal = {Cuban Journal of Agricultural Science}, volume = {56}, number = {2}, pages = {}, year = {2022-03-31}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v56n2e02}, cu_id = {https://cu-id.com/1996/v56n2e02}, abstract = {Phytobiotics are bioactive principles found in the roots, stems, leaves and fruits of plants and are supplied in the pig diet as essential oils, powders and extracts. These additives are used as food palatability improvers, they increase the secretory production of salivary glands, stomach juices, pancreatic enzymes and hepatic bile acids. They are also involved in the functioning of the enzymes of the intestinal mucosa and intestinal brush border, in gastric and intestinal motility, endocrine stimulation and in antioxidant and anti-inflammatory activity, as well as in intestinal health and productive performance. These compounds show bactericidal effects against Enterococcus faecalis, Clostridium spp., Staphylococcus aureus, Escherichia coli and Salmonella spp. Due to the action they exert on the cell membrane, they cause instabilities that compromise the osmotic balance and cause the lysis of the bacteria. In addition, they show immunomodulatory action, since they can act on T cells, B cells, NK cells (Natural Killer) and macrophages. For these reasons, different researchers are carried out internationally with the aim of evaluating the effect of phytobiotic additives on microbiological, immunological, histological, blood, productive and reproductive indicators in pigs. This review aims to assess the use of phytobiotic additives (essential oils, powders and extracts) in the different stages of pig production. Results of the bioactive components of essential oils, powders, plant extracts and production rates in the different pig categories are shown.Key words: antidiarrheal, antioxidant, bioactive components, plants, intestinal health, pigs}, }
Cu-ID: https://cu-id.com/1996/v56n2e06 Redirecciones: 211 URL: https://cjascience.com/index.php/CJAS/article/view/1051 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1051 BibTeX: @article{Rhizobacteria_and_their_contribution_to_plant_tolerance_to_drought_and_salinity, title = {Rhizobacteria and their contribution to plant tolerance to drought and salinity}, author = {Becquer, C. J.}, journal = {Cuban Journal of Agricultural Science}, volume = {56}, number = {2}, pages = {}, year = {2022-06-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v56n2e06}, cu_id = {https://cu-id.com/1996/v56n2e06}, abstract = {The positive effect of plant growth promoting rhizobacteria on plants that are subjected to environmental stress has been studied for decades. This review fundamentally deals with aspects related to the theoretical basis of the physiological-biochemical mechanism of these microorganisms, and that have to do with tolerance to drought and salinity by plants, which includes the production of phytohormones, enzymes and osmolytes, among others. Information is also compiled about the progress made on this subject in recent years, in the world and in Cuba, especially in relation to cereals, legumes and grasses. It is considered that water stress, as well as saline stress, limits the growth and productivity of crops, but the use of microbial inoculants highlighted among the ways that exist to reverse the consequences of these stressful environmental factors. Proven results are cited with the application of bioinoculants from rhizobacteria and other beneficial microorganisms that show their usefulness, by increasing the productivity of different crops, under drought and salinity stress conditions. Future researches are needed to develop and apply novel bioinoculants in agriculture so that the threats of drought and salinity can be counteracted. This objective can be achieved through the applied study of plant-microorganism interactions, under environmental stress conditions.Key words: rhizobacteria, grasses, tolerance, productivity}, }
Cu-ID: https://cu-id.com/1996/v56n3e04 Redirecciones: 160 URL: https://cjascience.com/index.php/CJAS/article/view/1060 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1060 BibTeX: @article{Effect_of_growth_age_on_the_polyphenol_content_of_materials_from_Tithonia_diversifolia_(Hemsl.), title = {Effect of growth age on the polyphenol content of materials from Tithonia diversifolia (Hemsl.)}, author = {Scull, Idania and Savón, Lourdes and Ruíz, T. E. and Herrera, Magaly}, journal = {Cuban Journal of Agricultural Science}, volume = {56}, number = {3}, pages = {}, year = {2022-09-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v56n3e04}, cu_id = {https://cu-id.com/1996/v56n3e04}, abstract = {The effect of growth age (30, 60 and 90 days) on the polyphenol content of Tithonia diversifolia (Hemsl.) materials collected in eastern Cuba was evaluated. A completely random design with 10 repetitions was applied. Total polyphenols and total condensed tannins were determined in seven tithonia materials (2, 3, 12, 14, 17, 23 and 24) in the rainy and dry seasons. An analysis of variance was performed, according to a completely random design in a 3 x 7 factorial arrangement. The factors were the growth age (30, 60 and 90 days) and the T. diversifolia materials (2, 3, 12, 14, 17, 23 and 24). There was an increase in phenolic compounds with growing age and the highest values were reached at 90 days. Material 3 showed the highest content of total polyphenols (4.62 % DM) in the dry season, and 12 reached the highest concentration of total condensed tannins (2.33 % DM) in the rainy season. The studied materials showed differences in the content and type of phenolic compounds in both seasons of the year. This experiment will help to select the materials with the greatest biological potential for animal feeding. Future researches are suggested to identify the biological activity of these substances and their relation with the beneficial effects in animals.Key words: secondary metabolites, tannins, buttercup, phytochemical composition}, }
Cu-ID: https://cu-id.com/1996/v56n3e07 Redirecciones: 170 URL: https://cjascience.com/index.php/CJAS/article/view/1059 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1059 BibTeX: @article{Biofertilization_with_Gluconacetobacter_diazotrophicus_and_Funneliformis_mosseae_in_Guinea_grass_(Megathyrsus_maximus_cv._Likoni)._Technical_note, title = {Biofertilization with Gluconacetobacter diazotrophicus and Funneliformis mosseae in Guinea grass (Megathyrsus maximus cv. Likoni). Technical note}, author = {González, P. J. and Ramírez, J. F. and Reyes, R. and Rivera, R.}, journal = {Cuban Journal of Agricultural Science}, volume = {56}, number = {3}, pages = {}, year = {2022-09-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v56n3e07}, cu_id = {https://cu-id.com/1996/v56n3e07}, abstract = {An experiment was carried out under semi-controlled conditions to evaluate the effect of biofertilization with Gluconacetobacter diazotrophicus and Funneliformis mosseae on Guinea grass (Megathyrsus maximus cv. Likoni). Five treatments (simple and combined inoculation with G. diazotrophicus and F. mosseae, fertilization with 25 mg N kg-1 of soil and a control without biofertilizers or nitrogenous fertilizer) were studied in a completely random design with five repetitions. Biofertilization with G. diazotrophicus and F. mosseae separately produced higher effects than the control without biofertilizers. However, with the combined application of both, the highest frequency of mycorrhizal colonization was reached (52.4 %), as well as concentrations of N in aerial biomass (18.5 g kg-1) and aerial biomass yields (7.45 g pot-1) and radical (7.38 g pot-1), similar to those obtained with nitrogen fertilization. It is concluded that the co-inoculation with G. diazotrophicus and F. mosseae is effective in improving nitrogenous nutrition and biomass yields of Megathyrsus maximus cv. Likoni.Key words: rhizobacteria, arbuscular mycorrhizae, nitrogen, growth}, }
Cu-ID: https://cu-id.com/1996/v56n3e08 Redirecciones: 158 URL: https://cjascience.com/index.php/CJAS/article/view/1057 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1057 BibTeX: @article{Effect_of_food_source_on_the_chemical_composition_of_Californian_red_worm_(Eisenia_foetida)_vermicompost, title = {Effect of food source on the chemical composition of Californian red worm (Eisenia foetida) vermicompost}, author = {Riascos, A. R. and Crespo-López, G. and Guerrero, E. M. and Medina, Yolaine}, journal = {Cuban Journal of Agricultural Science}, volume = {56}, number = {3}, pages = {}, year = {2023-10-16}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v56n3e08}, cu_id = {https://cu-id.com/1996/v56n3e08}, abstract = {In an area of the Amazon plain, the effect of the food source on the chemical composition of the Californian red worm (Eisenia foetida) vermicompost was evaluated. The research was carried out at "El mochilo” farm, from Centro Agroforestal y Acuícola “Arapaima”. An analysis of variance was performed, according to a random block design. Three treatments and three replications were established: T1) 100 % fruit and vegetable wastes, T2) 100 % chicken manure wastes and T3) mixture of 30 % bovine manure, 35 % chicken manure and 35 % fruit and vegetable wastes. The variables electrical conductivity, pH, organic matter content, nitrogen, phosphorus, potassium and C/N ratio were measured. Analysis of variance was performed Duncan (1955). The treatments with the highest amount of fruit and vegetable wastes (T1 and T3) obtained higher potassium contents, with values of 1.23 % and 1.20 %, respectively, compared to 100 % chicken manure, which obtained higher phosphorus content, pH value of 7.23 with better vermicomposting stability. The research showed that, according to their chemical composition, the different sources for the elaboration of vermicompost constitute a viable option to obtain a quality product. A higher content of fruits and vegetables achieved more potassium in the final product. On the contrary, higher phosphorus and organic matter contents were recorded from a source that contained chicken manure.Key words: fertilizer, organic matter, potassium}, }
Cu-ID: https://cu-id.com/1996/v56n3e02 Redirecciones: 142 URL: https://cjascience.com/index.php/CJAS/article/view/1058 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1058 BibTeX: @article{Effect_of_the_inclusion_of_SUBTILPROBIO®_zootechnical_additive_in_the_production_of_different_livestock_categories_in_Matanzas._Technical_note, title = {Effect of the inclusion of SUBTILPROBIO® zootechnical additive in the production of different livestock categories in Matanzas. Technical note}, author = {Milián, Grethel and Beruvides, A. and Pérez, Y. and Rodríguez, Marlén and Rondón, Ana J. and Pérez, M. L. and Placeres, Iraní}, journal = {Cuban Journal of Agricultural Science}, volume = {56}, number = {3}, pages = {}, year = {2022-09-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v56n3e02}, cu_id = {https://cu-id.com/1996/v56n3e02}, abstract = {The impact that the use of the nutritional additive SUBTILPROBIO® has on the feeding of different livestock categories is exposed: laying hens L33, Heavy Pure Lines E1 and B4, Yorkshire - Landrace x L35 pigs, in breeding, pre-fattening and fattening, and small ruminants. The research was carried out at different times and enterprices in Matanzas territory: Combinado Avícola, Empresa Genética Avícola and Pie de Cría, Unidades Porcinas and Empresa Pecuaria Genética de Matanzas, Cuba. This additive was made with the strains Bacillus subtilis subspecies subtilis C-31, C-34 and E-44 at a concentration of 109 cfu/g. The results showed increases in the productive indicators: live weight, intake, conversion, egg production, decrease in cracked and disqualified eggs, economic benefits for weight concepts. The health indicators showed positive results for mortality, viability, death by pecking or cannibalism, decrease in the presence of bacterial and immunological diseases. The effectiveness of the zootechnical additive SUBTILPROBIO® was showed as an alternative in livestock production.Key words: nutritional additives, Bacillus endospores, animal feeding, antibiotics, probiotics}, }
