• https://revistaelectronica.unlar.edu.ar/

https://www.produccioncientificaluz.org/index.php/agronomia/issue/feed 2026-04-01T14:28:58+00:00 Jorge Vilchez Perozo agrorevistaluz@gmail.com Open Journal Systems <p>The Journal of the Faculty of Agronomy, Universidad del Zulia is a publication of the Agronomic Research Institute of the Faculty of Agronomy, Universidad del Zulia, published since 1968 and is supported by the Universidad del Zulia, in order to disseminate the results of researchers Venezuelans and other parts of the world, related to the agricultural field. The Rev. Fac. Agron. (LUZ) publishes four issues per year, i. e., every three months, under continuous publication format (rolling pass). , with original and unpublished scientific articles, technical notes, review articles, quick communications, extensive summaries of congresses and scientific meetings related to the agricultural area for the consideration of the Editorial Committee. The journal publishes research products of high scientific quality and promotes the exchange of publications and scientific activity at the agricultural level, in the areas of Plant Production, Animal Production, Food Technology and Socioeconomics. The topics included in these areas are: agrosystem management, environment, agricultural biotechnology, meat science, milk science, rural development, agricultural economics, agricultural entomology, fertilizers, post-harvest physiology, plant physiology, physiology and animal reproduction, pastures and forages, animal and plant genetics and improvement, weeds, animal nutrition, plant pathology, agri-food safety, agri-food systems and soils.</p> https://www.produccioncientificaluz.org/index.php/agronomia/article/view/45341 2026-03-26T22:42:39+00:00 Abdenour Bir birabdenour@univ-setif.dz Aissa Meredef a.meredef@gmail.com Mohamed Benidir moh19ina@yahoo.fr Charef Eddine Moufok mouffokcharefeddine@yahoo.fr

<p>This study explores the potential of hydroponic barley as an innovative feed strategy to address shortages in intensive livestock production, with a focus on small-scale landless farms. Twelve three-parous Normande cows, averaging 717 ± 34 kg, were allocated into two homogeneous groups based on body weight, calving date, and previous lactation performance. Both groups received identical total mixed rations (TMR), while the experimental group was supplemented with 10 kg of hydroponic barley per cow per day. Over the lactation period, cows in the experimental group exhibited higher daily dry matter intake (20.62 ± 1.21 vs. 19.13 ± 1.14 kg.d^-1) and milk production (22.17 vs. 18.91 kg.d^-1), resulting in a 17.25 % increase in total lactation yield (6,760.80 vs. 5,765.68 kg). Feed efficiency improved by 9.09 %, and milk composition analysis revealed elevated fat (40.13–42.49 g.kg^-1) and protein (32.21–34.87 g.kg^-1) concentrations. Daily fat and protein yields were also significantly higher in the experimental group (942 and 758.06 g.d^-1, respectively) compared to the control (777.76 and 609.09 g.d^-1). No significant differences were observed in body weight or body condition score between groups. These results suggest that hydroponic barley supplementation can enhance both milk yield and quality by improving nutrient intake and digestibility. However, to fully understand the mechanisms underlying these benefits, further investigations are needed to assess its effects on rumen metabolism and gut microbiota. Overall, this study highlighted the practical potential of hydroponic barley as a sustainable, high-value feed supplement in modern dairy systems.</p>

2026-03-26T00:00:00+00:00 Copyright (c) 2026 Abdenour Bir, Aissa Meredef, Mohamed Benidir, Charef Eddine Moufok https://www.produccioncientificaluz.org/index.php/agronomia/article/view/45406 2026-04-01T14:28:58+00:00 Julia Martínez julia.martinez.j@gmail.com Fátima Urdaneta fatimaurdanet@gmail.com María Peña mariaelenapena2006@hotmail.com Ángel Casanova† fatimaurdanet@gmail.com

<p>In the South of Lake Maracaibo, fine aroma cocoa production systems (FACPS) have been developed where good quality beans are produced, but with low yields; this situation can beassociated with multiple social, technical and economic factors, whose interrelationships require a comprehensive analysis to be able to identify their limitations and potentialities. This research was proposed with the objective of explaining how the functional relationships of the FACPS affect its productivity, as well as weighing the productive factors. A sample of 84 producers from the South of Lake Maracaibo was taken. Data were analyzed by Cluster analysis to group the production units by their functional similarities according to four calculated indices: Agronomic Practices Index (API), Labor Force Index (LFI), Production Means Index (PMI) and Socioeconomic Environment Index (SEI), then an analysis of variance was performed to establish the productivity differences between groups. The factors weighting was carried out by a logistic regression model. Results showed the formation of four functional groups with their arrangement of components and relationships. Productivity indicators were significantly different (p ≤ 0.05) among groups, this indicates that the way the system's components are arranged affects its productive outputs. The logistic regression model indicated that the educational level, the low percentage of flat surface and the farm size are the main factors that increase the probability that a production unit belongs to the group with the highest yields.</p>

2026-03-31T00:00:00+00:00 Copyright (c) 2026 Julia Martínez Sthormes, Fátima Urdaneta Ortega, María Elena Peña, Ángel Casanova Araque†