Cu-ID: https://cu-id.com/1996/ojs458 Redirecciones: 30 URL: https://cjascience.com/index.php/CJAS/article/view/458 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/458 BibTeX: @article{Degradation_and_recovery_of_swards, title = {Degradation and recovery of swards}, author = {Padilla, C?sar and Crespo, Gustavo and Sardi?as, Yurangel}, journal = {Cuban Journal of Agricultural Science}, volume = {43}, number = {4}, pages = {}, year = {2009-10-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/ojs458}, cu_id = {https://cu-id.com/1996/ojs458}, abstract = {The degradation of swards is produced, in general, together with the loss of the natural fertility of the soils causing the decrease in cattle productivity and great economic losses. It is considered that a sward is degraded when desired species have lost their vigor and productive capacity per unit of area and per animal and unpopulated areas and undesired plants of poor yield and low nutritive value occupy the land surface. This provokes the ecological and economical deterioration, being incompatible with the productive cattle systems. Among the main causes of degradation of swards, there are the indiscriminate use of burning, the invasion of weeds, pests, and diseases, the climatic factors and the poor fertility of the soils. Among the most used techniques for the effective rehabilitation of degraded swards, there is the use of the subsolator, the subsolator doble plowing, plowing + harrowing, plowing + harrowing +organic matter, and plowing + harrowing + complete formula (0.5 t/ha). Out of them, those of the lowest cost-benefit ratio and technical- productive impact have been plowing + harrowing and plowing + harrowing + complete formula. In this study, some reasons were identified supporting the preference for conducting recovery techniques and renewal of degraded swards instead of carrying out new sowings in degraded swards.Key words: swards, renewal, recovery.}, }
Cu-ID: https://cu-id.com/1996/ojs457 Redirecciones: 28 URL: https://cjascience.com/index.php/CJAS/article/view/457 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/457 BibTeX: @article{Improvement_of_Pennisetum_purpureum_in_Cuba, title = {Improvement of Pennisetum purpureum in Cuba}, author = {Herrera, Rafael Segundo}, journal = {Cuban Journal of Agricultural Science}, volume = {43}, number = {4}, pages = {}, year = {2009-10-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/ojs457}, cu_id = {https://cu-id.com/1996/ojs457}, abstract = {At the middle of the 80?s in the Institute of Animal Science, it started a program of improvement of Pennisetum purpureum through the useof biotechnology (in vitro tissue culture) and mutagenesis (radiation with 60Co). This responded to, at that time, the most spread and usedPennisetum varaiety was King grass, which occupied 85 % of the forage areas in the country. The object of this program was the obtainmentof new varieties with superior traits and that responded favorably to adverse conditions such as salinity and drought. Several clones wereobtained through in vitro tissue culture. Out of them, two were selected: Cuba CT-115 and Cuba CT-169. The former was used to developed the biomass bank technology for grazing and to fulfill the feed deficit in the dry season, whereas the latter is purely for forage. Through mutagenesis, two new clones were obtained Cuba MF-24 and Cuba MQ-1 which by being exploited in dry conditions and with moderate doses of nitrogenous fertilizer, surpass the yields of king grass. Also, others were obtained having better agronomic and quality indicators. Special care was paid to drought and salinity, and the clones managed to surpass the yields of their predecessors. It was concluded that plants were obtained having favorable traits for forage production, grazing, drought and salinity resistance, as well as with better agronomic and quality indicators. Further studies are suggested using fertilization strategically and introducing new plants in commercial production, having wide variety of germplasm for further studies.Key words: improvement, Pennisetum purpureum.}, }
Cu-ID: https://cu-id.com/1996/ojs456 Redirecciones: 42 URL: https://cjascience.com/index.php/CJAS/article/view/456 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/456 BibTeX: @article{The_global_climatic_change_and_its_impacts_in_Cuba._Actions_for_the_future, title = {The global climatic change and its impacts in Cuba. Actions for the future}, author = {Febles, Gustavo and Ruiz, Tom?s El?as}, journal = {Cuban Journal of Agricultural Science}, volume = {43}, number = {4}, pages = {}, year = {2009-10-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/ojs456}, cu_id = {https://cu-id.com/1996/ojs456}, abstract = {The objective of this review is to report and contribute to a more theoretic-practical conscience about the climatic change, its characteristics, and performance worldwide, particularly in Cuba. Some suggestions are offered for the future work. The material deals with the fundamental processes and concepts about the greenhouse effect and of the harmful gases that are released to the atmosphere. The content of the United Nations Framework Convention on Climate Change and its synergy with other agreements are profiled. Data of climate and its components, sea level rise, extreme events, and others are noteworthy. Emphasis is laid on small island countries. The information from Cuba is abundant and updated. The material provides the possibilities of adaptation and mitigation of the climatic change for the future, besides the results from the agricultural researches, as well as other elements related to the effect of the climatic change on human health. It is concluded that it is better to substitute the management of the crisis by the management of risk. Key words: climatic change, Cuba, greenhouse effect gases, mitigation.}, }
Cu-ID: https://cu-id.com/1996/ojs861 Redirecciones: 47 URL: https://cjascience.com/index.php/CJAS/article/view/861 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/861 BibTeX: @article{Development_of_sustainable_cattle_rearing_in_silvopastoral_systems_in_Latin_America, title = {Development of sustainable cattle rearing in silvopastoral systems in Latin America}, author = {Murgueitio, E. and Chará, J. and R., Barahona and Rivera, J. E.}, journal = {Cuban Journal of Agricultural Science}, volume = {53}, number = {1}, pages = {}, year = {2009-03-01}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/ojs861}, cu_id = {https://cu-id.com/1996/ojs861}, abstract = {Tropical and subtropical regions of Latin America, due to their wide territorial extension with lower human population density than Asia and with an accelerated concentration of their inhabitants in the cities, enjoy less limiting agroclimatic conditions than a great part of Africa and Australia in such a way that they are called upon to supply a growing portion of the world demand for bovine, ovine, caprine and buffalo meat, and possibly also for bovine milk. It is predicted that this demand will continue to rise in the next decade (Steinfeld et al. 2006). Forage production, naturally and economically performed, is the basis of the feeding of the se domestic herbivores. An essential condition for this potential to be achieved one day is that small, medium and large scale producers strictly apply the agroecological principles in soil management, water care, and sustainable production of forage biomass and biodiversity conservation (Calle et al. 2013). But, in addition, it is mandatory to guarantee the welfare of animals (Broom et al. 2013), and that production systems reduce greenhouse gas emissions, while being more resilient to climate change effects (Montagnini et al. 2013, Gerber et al. 2013 and Chará et al. 2017).}, }
Cu-ID: https://cu-id.com/1996/ojs1036 Redirecciones: 24 URL: https://cjascience.com/index.php/CJAS/article/view/1036 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1036 BibTeX: @article{Meat_quality_of_non-castrated_males_(Holstein_x_Zebu),_fattened_in_a_silvopastoral_system, title = {Meat quality of non-castrated males (Holstein x Zebu), fattened in a silvopastoral system}, author = {Iraola, J. and García Orta, Yenny and Fraga, L. M. and Hernández-Báez, J. L.}, journal = {Cuban Journal of Agricultural Science}, volume = {55}, number = {4}, pages = {}, year = {2021-11-26}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/ojs1036}, cu_id = {https://cu-id.com/1996/ojs1036}, abstract = {Meat quality of non-castrated males in finishing stage was evaluated in a silvopastoral system with Leucaena leucocephala, supplemented with corn meal. Thirty-nine animals of the same genetic group (5/8 Holstein x 3/8 Zebu) were used, sacrificed in three groups, of 13 animals each, at different ages (25, 29 and 33 months, respectively), according to the technical standards of the Meat Center of the Institute of Animal Science of the Republic of Cuba. Analysis of variance was performed to evaluate instrumental (color, temperature, pH, texture) and sensory indicators in meat samples taken from the Longissimus dorsi muscle between the tenth and thirteenth rib. The criterion of 60 randomly selected consumers was analyzed for the evaluation. The pH was also determined in two carcass muscles (Semimembranosus and Longissimus dorsi). A difference (p <0.01) was observed in the luminosity indicator (L*) between the youngest age group compared to the oldest. Tenderness values differed (p <0.01) among all groups slaughtered at 25, 29 and 33 months (7.47, 8.82 and 9.75 kg, respectively). The youngest animals showed lower values of tenderness and greater luminosity with respect to the older groups.Keywords: cattle, grazing, beef}, }
Cu-ID: https://cu-id.com/1996/ojs1034 Redirecciones: 27 URL: https://cjascience.com/index.php/CJAS/article/view/1034 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1034 BibTeX: @article{Effect_of_inclusion_levels_of_dried_distillers_grains_with_solubles_(DDGS)_on_productivity_and_egg_quality_of_Hy-Line_Brown®_laying_hens, title = {Effect of inclusion levels of dried distillers grains with solubles (DDGS) on productivity and egg quality of Hy-Line Brown® laying hens}, author = {Castiblanco, F. and Paz, P. E. and Valdivié, M. and Martínez, Y.}, journal = {Cuban Journal of Agricultural Science}, volume = {55}, number = {4}, pages = {}, year = {2021-11-26}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/ojs1034}, cu_id = {https://cu-id.com/1996/ojs1034}, abstract = {The effect of four levels of inclusion of dried distillers grains with solubles on the productive performance and egg quality of Hy-line Brown® laying hens was evaluated. A total of 140 animals were distributed in four treatments, according to a completely randomized design, for 10 weeks. Seven repetitions per treatment and five birds per repetition were established. The treatments consisted of a control diet and the inclusion of 10, 15 and 20 % of dried distillers grains with solubles. The inclusion of 0 and 10 % promoted (P <0.05) laying intensity and mass conversion with respect to 15 and 20 %. In addition, diets with dried distillers grains with solubles increased (P <0.05) feed intake, nutrients and metabolizable energy, as well as shell thickness and yolk color (P <0.05), without notable changes (P> 0.05) for albumen height, Haugh unit and resistance to shell rupture. It is recommended the inclusion of 10 % of dried distillers grains with solubles in partial substitution of corn and soybean meal in diets intended for Hy-line Brown® laying hens.Key words: distillery byproducts, laying hens, productive indicator, egg external and internal quality}, }
Cu-ID: https://cu-id.com/1996/ojs1020 Redirecciones: 35 URL: https://cjascience.com/index.php/CJAS/article/view/1020 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1020 BibTeX: @article{Socio-economic_and_productive_characterization_of_sugarcane_farmers_in_Pastaza_province,_Ecuador, title = {Socio-economic and productive characterization of sugarcane farmers in Pastaza province, Ecuador}, author = {Valle, S.B.}, journal = {Cuban Journal of Agricultural Science}, volume = {55}, number = {2}, pages = {}, year = {2021-04-14}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/ojs1020}, cu_id = {https://cu-id.com/1996/ojs1020}, abstract = {This study was developed in Pastaza province, Ecuador, with the purpose of determining the main socio-economic and productive characteristics of sugarcane farmers in Pastaza. A survey was applied to 58 farmers, divided into three components, regarding farmer, farm and sugarcane production. Results showed that the age of most farmers is between 31 and 70 years, they are male and self-identified as mestizos, dedicated to production (11 to 50 years), with primary instruction. Farms have an extension between 2 and 5 ha, dedicated to sugarcane cultivation, with ballast and asphalt roads, with distances of up to 500 m from the main carriers and from other sugarcane productions. Sugarcane production focuses on the preparation of panela and stem marketing for tourist purposes (fruit sugarcane). Extensions of crops are about 5 ha. In phytosanitary supervisions, there was greater reporting of the use of herbicides and fertilization with biological fertilizers. The highest production costs were focused on biological fertilization, with an average of 122 USD/ha in product cost and 28 USD/ha in application cost. Most of them reported a production of 5 m3/ha of panela or fruit sugarcane, with sale prices of 1 USD per unit. Regarding materials and equipment, most of farmers has fumigation pump, with investment lower than 100 USD in tools. It is concluded that farmers combine sugarcane production with other activities on surfaces up to 5 ha. Sowing and harvest are traditional and are carried out manually. Production focuses on the cultivation of panela and fruit sugarcane.}, }
Cu-ID: https://cu-id.com/1996/ojs1014 Redirecciones: 37 URL: https://cjascience.com/index.php/CJAS/article/view/1014 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/1014 BibTeX: @article{Growth_and_development_of_Moringa_oleifera_seedlings,_produced_in_substrates_with_sewer_sludge_and_bovine_manure, title = {Growth and development of Moringa oleifera seedlings, produced in substrates with sewer sludge and bovine manure}, author = {Alonso, J. and Vieira, Iago Thomaz do Rosario and Ferrnandes, Mariana Ferreira Rabelo and Rocha, Leonardo Michel and Ferreira, Guilherme Augusto de Paiva and Junio, Gerardo Ribeiro Zuba and Santos, Leonardo David Tuffi and Sampaio, Regynaldo Arruda}, journal = {Cuban Journal of Agricultural Science}, volume = {55}, number = {2}, pages = {}, year = {2021-04-14}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/ojs1014}, cu_id = {https://cu-id.com/1996/ojs1014}, abstract = {The growth and development of Moringa oleifera seedlings, produced in substrates with sewer sludge and bovine manure, were studied. A randomized block design with four replications was applied. A total of 12 treatments were elaborated, plus the commercial substrate Bioplant as a control. During 22 days, the emergence speed index was determined, and before transplantation, physiological and morphological measurements were made and the Dickson quality index was calculated. The physiologicalmeasurements were made on a fully expanded leaf and a portable LI-6400 meter was used. The emergence speed index differed between treatments and showed high correlation with respect to the physical properties of the substrate. The physiological indicators were similar, with values between 5.86-9.73 (μmol m-2 s-1) of liquid photosynthesis; 0.02-0.13 (mol m-2 s-1) of stomatal conductance and 1.04-1.76 (μmol CO2 mmol H2O-1) of transpiratory rate. The morphological variables plant height and stem diameter were higher (P <0.0143 and P <0.0077) in the prepared substrates, although some of them did not differ from the control. The number of leaves/plant was lower (P <0.0001) in the commercial substrate. In this treatment, the root volume (8.25 cm3) and the Dickson index (0.56) reached the highest values. The use of sewer sludge and bovine manure in substrates for seedlings production did not affect the growth and development of M. oleifera.Key words: emergency speed index, seedlings production, substrates, Moringa oleifera}, }
Cu-ID: https://cu-id.com/1996/ojs998 Redirecciones: 36 URL: https://cjascience.com/index.php/CJAS/article/view/998 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/998 BibTeX: @article{Chemical_and_microbiological_characterization_of_the_zootechnical_additive_VITAFERT,_under_small-scale_production_conditions, title = {Chemical and microbiological characterization of the zootechnical additive VITAFERT, under small-scale production conditions}, author = {Beruvides, A. and Elías, A. and Valiño, Elaine C. and Milián, Grethel and Rondón, Ana J. and Rodríguez, Marlén and Milián, J.}, journal = {Cuban Journal of Agricultural Science}, volume = {55}, number = {1}, pages = {}, year = {2021-01-14}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/ojs998}, cu_id = {https://cu-id.com/1996/ojs998}, abstract = {The objective of this research was to chemically and microbiologically characterize the zootechnical additive VITAFERT and evaluate its stability for 90 days. To analyze the results of the chemical and microbiological characterization, descriptive statistics (mean, standard deviation and coefficient of variation) was applied. One-way analysis of variance was used to study stability. INFOSTAT package, version 2012, was also used. The performance of the chemical composition was similar similar in the five studied batches, with mean for dry matter (9.70%), ashes (10.5%), calcium (1.33%), phosphorus (0.65%), crude protein (7.12%) and pH (4.0). The additive showed high counts of lactic acid bacteria, with values between 3.24 x 1012 CFU.mL-1 and 4.95 x 1012 UFC.mL-1 and yeasts between 7.00 x 107 CFU.mL-1 and 9.66 x 107 CFU.mL-1 respectively, as well as a pH of 4.0. The stability study showed that the product maintains a pH of 4.0 up to 90 days. It is concluded that the zootechnical additiveVITAFERT has chemical and microbiological characteristics for its application in animal feed.Key words: microbial preparation, stability, lactic acid bacteria, yeasts}, }
Cu-ID: https://cu-id.com/1996/ojs979 Redirecciones: 26 URL: https://cjascience.com/index.php/CJAS/article/view/979 OAI: https://cjascience.com/index.php/CJAS/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:ojs.pkp.sfu.ca:article/979 BibTeX: @article{Impact_of_biomass_bank_technology_with_Cuba_CT-115_grass_on_a_dairy_farm_from_the_topical_area_of_the_center_of_Veracruz,_Mexico, title = {Impact of biomass bank technology with Cuba CT-115 grass on a dairy farm from the topical area of the center of Veracruz, Mexico}, author = {Gudiño Escandon, R.S. and Díaz Untoria, J.D. and Torres Cárdenas, Verena and Retura González, Cynthia O. and Padilla Corrales, C.R. and Martínez Zubiaur:, R.O. and Vega Morrillo, V.E.}, journal = {Cuban Journal of Agricultural Science}, volume = {54}, number = {3}, pages = {}, year = {2020-07-08}, publisher = {Instituto de Ciencia Animal}, language = {eng}, url = {https://cu-id.com/1996/ojs979}, cu_id = {https://cu-id.com/1996/ojs979}, abstract = {To evaluate the impact of biomass bank technology with Cenchruspurpureus cv. Cuba CT-115 in dual-purpose livestock, data wascollected from 14 indicators during six years. For three years,the area had normal management and biomass banks for theother three. Trimester-year combination allowed to create a datamatrix with a total of 24 rows. The Statistical Model for ImpactMeasurement was used to interpret the results. Three principalcomponents (PC) were selected, which explained 83.87% ofthe variability. PC1 explained 56%, PC2 16.47% and PC 311.3%. The three new variables were renamed as production,supplements and productivity, respectively, according to thevariables that had a preponderance superior to 0.65 in eachcomponent. With these variables, impact indexes of each scenariowere estimated. Production component changed its impact values,from negative to positive, in the three years with biomass banks,which showed the advantage of technology introduction. Throughlinear correlations, it was estimated that, in each trimester, thetotal number of cows increased by 1.84 ± 0.14; milk productionat 298.37 ± 45.87 kg, weaned live weight at 44.81 ± 9.59 kg andstocking rate at 0.057 ± 0.07 LAU/ha. Biomass bank technologyallowed to important indicators for dual-purpose livestock.}, }
