Cu-ID: https://cu-id.com/1996/v58e21 Redirecciones: 65 URL: https://cjascience.com/index.php/CJAS/article/view/1156 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1156 BibTeX: @article{Effect_of_crude_glycerol_from_Jatropha_curcas_L._oil_on_the_production_and_quality_of_cattle_milk, title = {Effect of crude glycerol from Jatropha curcas L. oil on the production and quality of cattle milk}, author = {Bonis Neyra, Rebeca and Valenciaga Gutiérrez, Daiky and Sotolongo Pérez, J. Á. and García López, R. and Ortiz Milan, A. and Galindo Blanco, Juana L.}, journal = {Cuban Journal of Agricultural Science}, volume = {58}, number = {}, pages = {https://cu-id.com/1996/v58e21}, year = {2024-04-30}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v58e21}, cu_id = {https://cu-id.com/1996/v58e21}, abstract = {To evaluate the effect of crude glycerol from Jatropha curcas L. oil on the production and quality of cattle milk, a total of 30 multiparous cows from Siboney de Cuba breed were used, with an average pre-parturition body condition of 3.04 and an average pre-parturition live weight of 487.87 kg. The animals had an average number of lactations of 3.17 and between seven and 21 days after the start of milking. A completely random design with two treatments and 15 repetitions was applied. Each animal was considered a repetition. The treatments were: control) 1 kg of wheat bran during milking, without glycerol; treatment 2) 1 kg of wheat bran during milking + 200 mL of glycerol during the first 15 days, dose which was increased to 400 mL during the last 45 days of the trial). The animals grazed in areas of pitilla (Sporobolus indicus L.) with permanent access to water. The glycerol under study was characterized by a density of 1.02 g/mL, methanol content of 2.6 %, ignition point above 65 0C and pH of 8.74. It showed a dark brown color and sweet taste. These indicators are in accordance with the quality specification properties of crude glycerol, established by international standards. The average milk production/cow/day was higher (P=0.0001) in the treatment with the glycerol additive (3.43 vs. 2.20 L for the control), as well as the total milk production (P=0.0159). It is concluded that crude glycerol, obtained in the transesterification process of J. curcas oil, has physicochemical and organoleptic properties that make it suitable for their use in animal feeding as an additive. Its use increased milk production in Siboney Cuba cows without affecting quality indicators. Its application under production conditions and the development of new studies in other categories and species of animals are recommended.}, }
Cu-ID: https://cu-id.com/1996/v58e20 Redirecciones: 67 URL: https://cjascience.com/index.php/CJAS/article/view/1161 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1161 BibTeX: @article{Entomofauna_associated_with_a_silvopastoral_system_of_Tithonia_diversifolia_cv._ICA_Cuba_oc-10,_intended_for_bull_fattening, title = {Entomofauna associated with a silvopastoral system of Tithonia diversifolia cv. ICA Cuba oc-10, intended for bull fattening}, author = {Valenciaga, Nurys and Iraola, J. and Herrera, Magaly and Ruiz, T. E.}, journal = {Cuban Journal of Agricultural Science}, volume = {58}, number = {}, pages = {https://cu-id.com/1996/v58e20}, year = {2024-12-30}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v58e20}, cu_id = {https://cu-id.com/1996/v58e20}, abstract = {To evaluate the entomofauna associated with a silvopastoral system (SSP) of tithonia and improved and natural grasses, intended for bull fattening, an experiment was conducted for four years. A sample of 20 raids was taken during three climatic moments (January, May and September), with the use of the entomological net for each plant component. Results showed the superiority of Insecta class. An amount of 14 orders, 37 families and 76 morphospecies were collected. Out of them, 38 phytophages, 13 visitors, 22 bioregulators, 2 hematophages and 1 omnivore. The most common phytophages were the leafhoppers: Empoasca sp., Hortensia similis, Draeculacephala cubana and a complex of chrysomelids of Epitrix, Diabrotica, Colaspis, Diachus, Typophorus, Cryptocephalus, Oedionychus and Anysostena genera, which provoke their damage with greater emphasis on base grass and on the control area. However, they only reached the category of frequent. The rest were included in the category of infrequent (<10). September was the most representative month of the associated entomofauna. It is concluded that the study of the entomofauna in the evaluated areas confirms the function of the tree component in the agroecosystem. Regarding the SSP with tithonia and base grass, it is demonstrated that the system manages to maintain phytophagous, visitor and bioregulatory species in biological balance, without causing economic damage to the associated plant components. Therefore, it is recommended to maintain phytosanitary surveillance in these areas, by promoting increasingly diverse systems, in order to contribute to the comprehensive management of the agroecosystem.}, }
Cu-ID: https://cu-id.com/1996/v58e19 Redirecciones: 72 URL: https://cjascience.com/index.php/CJAS/article/view/1155 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1155 BibTeX: @article{Stability_and_preservation_of_the_probiotic_additive_with_Lactobacillus_pentosus_LB-31_for_animal_production, title = {Stability and preservation of the probiotic additive with Lactobacillus pentosus LB-31 for animal production}, author = {Sosa Cossio, Dailyn and García Hernández, Yaneisy and Dustet Mendoza, Julio C. and Sosa Ceijas, Areadne and García Curbelo, Yanelys and García Hernández, Yoleisy and Albelo Dorta, Nereyda}, journal = {Cuban Journal of Agricultural Science}, volume = {58}, number = {}, pages = {https://cu-id.com/1996/v58e19}, year = {2025-01-31}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v58e19}, cu_id = {https://cu-id.com/1996/v58e19}, abstract = {The stability time and storage conditions of the probiotic additive with Lactobacillus pentosus LB-31 for animal production were determined. Completely random designs with six repetitions were used to monitor microbial viability for a month (0, 7, 14, 21 and 30 days) when the additive was stored under ambient conditions (24 ±2 ºC) and for six months (0, 30, 60, 90, 120 and 180 days) when stored under refrigeration (4±2 ºC). Cell concentration, pH and purity of the culture were also determined. The results showed that the lactic acid bacteria maintained its viability during the first 14 days of storage at room temperature. After this time, the microbial concentration decreased from 7.64 to 7.02 log cfu/mL (p=0.0028) and remained at 91 % viability until 30 days. Under refrigeration conditions, LB-31 was stably up to 60 days of storage with a concentration of 3.74x107 cfu/mL, and subsequently decreased to 106 cfu/mL (p<0.0001) with a viability of 78 % at the end of the study. Under both conditions, the pH decreased and the colonies maintain their morphological and cultural characteristics. It is concluded that the probiotic additive with Lactobacillus pentosus LB-31 without preservatives is stable for 14 days at room temperature (24±2 ºC), and for 60 days under refrigerated conditions (4±2 ºC).}, }
Cu-ID: https://cu-id.com/1996/v59e08 Redirecciones: 85 URL: https://cjascience.com/index.php/CJAS/article/view/1179 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1179 BibTeX: @article{Alternative_models_for_describing_biological_variables_with_non-normality_and_non-linear_performance._Study_case, title = {Alternative models for describing biological variables with non-normality and non-linear performance. Study case}, author = {García Ávila, Yaneilys and Herrera Villafranca, Magaly and Rodríguez Hernández, R. and Torres Martínez, Mildrey and Medina Mesa, Yolaine}, journal = {Cuban Journal of Agricultural Science}, volume = {59}, number = {}, pages = {https://cu-id.com/1996/v59e08}, year = {2025-10-06}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v59e08}, cu_id = {https://cu-id.com/1996/v59e08}, abstract = {Alternative models, which do not follow a normal distribution or have linear performance, were examined to describe biological variables such as in vitro gas production. Two analyses were performed: the first ignored the lack of normality of the response variable, while the second considered the non-compliance with this assumption. Parameter estimation was performed using the NLMIXED procedure. The following statistical criteria were used to select the model with the best goodness of fit: CME, R2aj, AIC, BIC, and parameter significance. The fulfillment of the hypotheses of independence and randomness of the residual component was also considered. The tests to select the probability distribution of in vitro gas production showed that it has an exponential distribution (P>0.05). It is concluded that the logistic model with a “log” link function to estimate the population mean of in vitro gas production did not show adequate results. However, the segmental linear model was the one that best described this performance, revealing the best R2aj, CME, AIC, BIC and visually random residuals. Also, with the segmental linear model similar results were obtained, regardless of the normality of the response variable. The results showed that in certain cases parametric procedures can be used with data that do not fulfill with normality. However, the consequences of such violations must be taken into account. A segmental linear model is proposed as an alternative to describe in vitro gas production when the data do not fulfill with normality.}, }
Cu-ID: https://cu-id.com/1996/v59e07 Redirecciones: 152 URL: https://cjascience.com/index.php/CJAS/article/view/1177 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1177 BibTeX: @article{Microbiological_and_chemical_characteristics_of_a_zootechnical_additive_obtained_in_Ecuador_for_its_use_in_animal_feeding, title = {Microbiological and chemical characteristics of a zootechnical additive obtained in Ecuador for its use in animal feeding}, author = {Guerrero López, J.R. and Valiño Cabrera, Elaine C. and Rodríguez Sánchez, Bárbara and García Hernández, Yaneisy and González Puetate, I.R.}, journal = {Cuban Journal of Agricultural Science}, volume = {59}, number = {}, pages = {https://cu-id.com/1996/v59e07}, year = {2025-09-10}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v59e07}, cu_id = {https://cu-id.com/1996/v59e07}, abstract = { Microbiological and chemical characteristics of a zootechnical additive were determined for its use in animal feeding. The production process consisted of batch submerged fermentation at 18 ± 2 °C for seven days, mixed with an absorbent material, and then dried naturally. Two batches were formed, and the concentrations of mesophilic aerobes, fungi and yeasts, enterobacteria, total coliforms, Escherichia coli, Salmonella, and Listeria were calculated in duplicate. Humidity percentage, crude protein, ash, fat, crude fiber, total carbohydrates, pH, and total solids were also determined. The solid additive presented 1.4x107 cfu/g of mesophilic aerobes, 106 cfu/g of yeast, absence of pathogens, 14.2 % of humidity, 14 % of protein and crude fiber, 11.8 % of ash, 0.21 % of fat, pH of 6.72, and 3.0° Brix. Results indicate that the product has potential for its use as a zootechnical additive.}, }
Cu-ID: https://cu-id.com/1996/v59e06 Redirecciones: 91 URL: https://cjascience.com/index.php/CJAS/article/view/1178 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1178 BibTeX: @article{Geo-ecological_assessment_of_landscapes_in_relation_to_sustainable_land_management_in_Jimaguayú_municipality, title = {Geo-ecological assessment of landscapes in relation to sustainable land management in Jimaguayú municipality}, author = {Espinosa, A. J.}, journal = {Cuban Journal of Agricultural Science}, volume = {59}, number = {}, pages = {https://cu-id.com/1996/v59e06}, year = {2025-10-06}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v59e06}, cu_id = {https://cu-id.com/1996/v59e06}, abstract = {Consequences of climate change affect islands such as Cuba, where its impact on agricultural landscapes is evident. Jimaguayú municipality in Camagüey, which has long been dedicated to intensive agricultural production, has affected its landscapes due to the inadequate use of its resources and services. The implementation of tools is necessary to achieve, on a larger scale, the application of good practices, because of their effectiveness in productive sites. The objective of this study is to offer a geoecological assessment of the “Llanura alta en suelos pardos y húmicos” landscape, in relation to sustainable land management and climate change adaptation. Methods and techniques for obtaining, analyzing, and processing data and information were applied, such as a bibliographic review, landscape analysis method, and the use of Geographic Information Systems. The study area is analyzed, and a methodological argument is made for landscape assessment in relation to sustainable land management. An evaluation of the landscape under study is presented, resulting in severe environmental problems and an altered geo-ecological state. The need to establish management actions aimed at climate change adaptation at landscape scale was demonstrated.}, }
Cu-ID: https://cu-id.com/1996/v59e05 Redirecciones: 101 URL: https://cjascience.com/index.php/CJAS/article/view/1176 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1176 BibTeX: @article{Characterization_and_scarification_of_Neltuma_spp._Seeds_from_soil_and_trees, title = {Characterization and scarification of Neltuma spp. Seeds from soil and trees}, author = {Atarama-Castillo, S. A. and Chanduví-García, R. G. and Morocho-Romero, H. and Peña-Castillo, R. A. and Montero Salazar, Ana and Ruesta-López, Madai and Maza-Córdova, L. and García-Zapata, M. and Morales-Pizarro, D. A.}, journal = {Cuban Journal of Agricultural Science}, volume = {59}, number = {}, pages = {https://cu-id.com/1996/v59e05}, year = {2025-07-16}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v59e05}, cu_id = {https://cu-id.com/1996/v59e05}, abstract = {The carob tree (Neltuma/Prosopis spp.), a native species from Piura region (northeast Peru), is of great importance in the socioeconomic and ecological activity of the area. This tree is an important food source for humans and animals. There is little information about its sexual propagation. Therefore, in this study, the carob fruit and seed are characterized and chemical and biological scarification in the germination of carob collected from the soil and tree are evaluated. The evaluated treatments were: T0 (48 h imbibition), T1 (5 % tinner for 1 h), T2 (15 % tinner for 1 h), T3 (25 % tinner for 1 hour), T4 (35 % tinner for 1 hour), T5 (25 % biol for 20 min), T6 (50 % biol for 20 min), T7 (75 % biol for 20 min) and the germination variables: germination percentage, germination speed and germination index and first day of germination. The characterization of the fruit coincides with that reported in other studies on the identification of Neltuma piurensis. In soil-derived seeds, treatments T3 and T7 improved GP (62.5 % and 56.5 %), GS (0.87 and 0.75 germinated seeds per day), and GI (5.36 and 4.79). However, the FDG occurred one day after sowing compared to T0.}, }
Cu-ID: https://cu-id.com/1996/v59e03 Redirecciones: 84 URL: https://cjascience.com/index.php/CJAS/article/view/1174 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1174 BibTeX: @article{Effect_of_natural_and_synthetic_pigments_on_growth_performance,_relative_weight_of_some_organs_and_cecal_characteristics_of_young_broilers, title = {Effect of natural and synthetic pigments on growth performance, relative weight of some organs and cecal characteristics of young broilers}, author = {Sánchez DiPalma, R. and Amaya Gonzalez, F. and Rodríguez Bertot, R. and Aroche Ginarte, R. and Martínez, Y.}, journal = {Cuban Journal of Agricultural Science}, volume = {59}, number = {}, pages = {https://cu-id.com/1996/v59e03}, year = {2025-05-08}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v59e03}, cu_id = {https://cu-id.com/1996/v59e03}, abstract = {To evaluate whether dietary supplementation with pigments (natural and synthetic) had a growth-promoting effect in broilers at the early stage (0-10 days), 480 one-day-old Ross 308® male chickens were randomly assigned to four treatments (four replicates and 30 birds). The experimental treatment consisted of a control diet and the supplementation with 1 % of Bixa orellana, 1 % of Murraya koenigii and 0.03 % of canthaxanthin. The experimental diets did not affect (P>0.05) the viability, however, Bixa orellana diet increased (P<0.05) the body weight compared to the other experimental groups, although this treatment did not change (P>0.05) the feed intake and feed conversion ratio in relation to the control diet. The treatments did not modify the relative weight of the gizzard, pancreas, and heart (P>0.05). However, the Bixa orellana and Murraya koenigii groups decreased (P<0.05) the relative weight of the proventriculus and cecum and the liver and abdominal fat, respectively. Furthermore, the canthaxanthin group increased (P<0.05) the relative weight of lymphoid organs and small intestine (P<0.05). Moreover, Bixa orellana diet decreased (P<0.05) the pH, total coliforms, Enterobacteriaceae and Escherichia coli in the cecum compared to the other diets, and the Murraya koenigii group increased (P<0.05) the population of lactic acid bacteria. Also, in this organ (cecum), yeast quantification decreased (P<0.05) due to canthaxanthin and the fungal population did not change among treatments (P>0.05). Dietary supplementation with Bixa orellana has a natural growth-promoting effect, as well as a marked antimicrobial effect against common cecal Enterobacteriaceae of broilers.}, }
Cu-ID: https://cu-id.com/1996/v59e02 Redirecciones: 76 URL: https://cjascience.com/index.php/CJAS/article/view/1170 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1170 BibTeX: @article{Pancreatic_trypsin_enzymatic_activity_in_broilers_which_intake_royal_palm_nut_meal, title = {Pancreatic trypsin enzymatic activity in broilers which intake royal palm nut meal}, author = {Martínez-Pérez, Madeleidy and Vives Hernández, Yesenia and Alberto Vázquez, Maryen and Hernández Lemus, Susan K.}, journal = {Cuban Journal of Agricultural Science}, volume = {59}, number = {}, pages = {https://cu-id.com/1996/v59e02}, year = {2025-01-13}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v59e02}, cu_id = {https://cu-id.com/1996/v59e02}, abstract = {To study the pancreatic trypsin enzymatic activity in broilers which intake royal palm nut meal, a total of 40 animals (HE21) distributed in a completely random design were used. Four treatments were designed: control and inclusion of 5, 10 and 15 % royal palm nut meal. The animals were weighed and sacrificed at 42 days and the pancreas were extracted, they were weighed and expressed relative to live weight and the trypsin enzymatic activity was determined, which increased with the inclusion of 5 and 10 % compared to the control and 15 % (5744.50 and 5131.50 vs 2415.67 and 1540.67 mg of released tyrosine. min-1. mg-1 of protein, respectively). It is concluded that the inclusion of royal palm nut meal up to 10 % in broilers diets increase the pancreatic trypsin enzymatic activity to digest proteins in the gastrointestinal tract.}, }
Cu-ID: https://cu-id.com/1996/v59e01 Redirecciones: 137 URL: https://cjascience.com/index.php/CJAS/article/view/1169 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1169 BibTeX: @article{Classification_of_small-scale_dairy_production_in_the_Ecuador-Colombia_border_area._A_comparative_study_of_automatic_learning_techniques, title = {Classification of small-scale dairy production in the Ecuador-Colombia border area. A comparative study of automatic learning techniques}, author = {Carvajal-Pérez, L. and Montenegro-Arellano, F. and Terán-Rosero, G. and Urgilés-Urgilés, Gladys and Chulde-Chulde, Nayeli and Cobo-Cuña, R. and Herrera-Villafranca, Magaly}, journal = {Cuban Journal of Agricultural Science}, volume = {59}, number = {}, pages = {https://cu-id.com/1996/v59e01}, year = {2025-01-09}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/v59e01}, cu_id = {https://cu-id.com/1996/v59e01}, abstract = {The socioeconomic factors determining production in dairy farms were researched. The classification of small-scale farmers in the border area between Ecuador and Colombia was involved. A total of 532 farmers participated in the survey and the data collected was analyzed using automatic learning techniques. The data were subjected to an exhaustive preprocessing to remove errors and outliers related to socioeconomic factors in milk production in Carchi, Ecuador. Among the variables examined, economic income, the price per liter of milk and the quantity of liters used for cheese production emerged as the most influential factors. The results showed that automatic learning techniques can effectively classify small-scale dairy production, with accuracy above 96 %. The presence of a child who provides economic support to the house, the allocation of milk for the production and sale of cheese, together with its use for family consumption, significantly influenced 90 % of the surveyed participants.}, }
