Revista Colombiana de Ciencias Pecuarias 2022-10-04T12:33:12-05:00 Editor-in-chief: Jorge Agudelo, PhD Open Journal Systems <ul> <li class="show"><strong>ISSN Impreso: </strong>0120-0690</li> <li class="show"><strong>ISSN electrónico: </strong>2256-2958</li> <li class="show"><strong>Periodicidad:</strong> Trimestral</li> <li class="show"><strong>Creative Commons:</strong> <a href="" target="_blank" rel="noopener">by-nc-sa</a></li> </ul> Subject index for Volume 35, 2022 2022-10-04T12:28:33-05:00 2022-10-04T00:00:00-05:00 Copyright (c) 2022 Revista Colombiana de Ciencias Pecuarias Peer-Reviewer index for Volume 35, 2022 2022-10-04T12:21:13-05:00 2022-10-04T00:00:00-05:00 Copyright (c) 2022 Revista Colombiana de Ciencias Pecuarias Índice temático Volumen 35, 2022 2022-10-04T12:33:12-05:00 2022-10-04T00:00:00-05:00 Copyright (c) 2022 Revista Colombiana de Ciencias Pecuarias Author index for Volume 35, 2022 2022-10-04T12:25:08-05:00 2022-10-04T00:00:00-05:00 Copyright (c) 2022 Revista Colombiana de Ciencias Pecuarias Effects of virginiamycin and galbanum (Ferula gummosa boiss) on performance, carcass traits, immune system and blood parameters of broiler chickens 2021-11-25T15:45:53-05:00 Amin Sarchahi Khosro Ghazvinian Khatereh Kafshdoozan Reza Jamshidi <p><strong>Background:</strong> Some medicinal plants can stimulate growth in poultry. <strong>Objective:</strong> To compare the effects of dietary addition of virginiamycin antibiotic and galbanum plant (<em>Ferula gummosa</em>) on the performance, carcass characteristics, immune system, and blood factors of broiler chickens. <strong>Methods:</strong> A total of 250 one-day-old male Ross 308 broiler chickens were randomly assigned to five treatments with five replicates (10 birds per replicate). The treatments were: control (basal diet), virginiamycin (basal diet plus 0.1 g virginiamycin/kg of diet) or one of three levels of galbanum powder (2.5, 5, and 10 g galbanum/kg of diet). <strong>Results:</strong> Body weight gain, feed intake and feed conversion ratio improved in the groups containing galbanum compared to the other groups (p&lt;0.05). The percentage of liver, heart and abdominal fat decreased in the treatments containing 5 and 10 g galbanum compared to the control (p&lt;0.05). Spleen weight and antibody titers against Newcastle disease and SRBC were significantly increased in the treatment containing 10 g of galbanum compared to the other treatments (p&lt;0.05). The addition of galbanum powder resulted in a significant decrease in serum cholesterol, triacylglycerol, and LDL (p&lt;0.05). Additionally, galbanum increased serum total protein, albumin, globulin, and HDL (p&lt;0.05). Conclusion: Galbanum improves performance and the immune system of broiler chickens, and has similar growth promoting effects as virginiamycin.</p> 2022-10-04T00:00:00-05:00 Copyright (c) 2021 Revista Colombiana de Ciencias Pecuarias Experimental protocol to repel opossums (Didelphis marsupialis) through an artisanal odor repellent device 2022-02-21T14:54:46-05:00 Karen N Rodríguez Diana R Aguirre Claudia P Ceballos <p><strong>Background:</strong> The human-opossum (<em>Didelphis marsupialis</em>) conflict has increased during the last decades mainly due to natural habitat loss, and mediated by generalist and opportunistic habits of opossums. A potential solution to reduce this conflict is to discourage the presence of opossums in human settlements without affecting the welfare of either part. <strong>Objective:</strong> To develop an artisanal odor device and test three chemical substances (citronella, ammonia, and creolin) for their separate effectiveness to drive away opossums. <strong>Methods:</strong> We first attracted local opossums using fruits or canned sardines as bait in an urban natural park (n=2 sites) and a peri-urban forest reserve (n=4 sites), both located in the Municipality of Envigado, Province of Antioquia, Colombia. Then we installed odor devices containing one of the three chemicals on each site and let them there during two weeks. The test was repeated with each of the chemicals in all sites. The number of opossum visits per night was recorded daily using camera-traps with bait and bait+chemical. <strong>Results:</strong> We found that ammonia and creolin were associated to fewer opossum visits per night. Citronella did not reduce the presence of opossums. In addition, the number of opossums/per night was higher in the urban park compared with the forest reserve. <strong>Conclusion:</strong> We suggest to further test the repellent effect of ammonia and creolin on real human-opossum conflict scenarios; however, caution is warranted given their irritant, flammable, and corrosive properties.</p> 2022-10-04T00:00:00-05:00 Copyright (c) 2021 Revista Colombiana de Ciencias Pecuarias Effect of tropical forage species in silvopastoral arrangements on methane production and in vitro fermentation parameters in a RUSITEC system 2021-12-21T09:29:44-05:00 Aldo J Ibarra-Rondón Pedro J Fragoso-Castilla Luis A Giraldo-Valderrama José E Mojica-Rodríguez <p><strong>Background:</strong> Supplementation of grazing cattle with native and naturalized forages using silvopastoral systems has been suggested as an affordable strategy to reduce methane production and improve nutrition, diminishing the environmental impact of cattle production. <strong>Objective:</strong> To evaluate the effect of three tropical forage species in a silvopastoral arrangement on methane production and fermentation parameters using an <em>in vitro</em> ruminal simulation system (RUSITEC). <strong>Methods:</strong> Four diets were evaluated. The control treatment was a basal diet of colosuana grass (COL; <em>Bothriochloa pertusa</em>), while the other diets consisted of 70% COL complemented with 30% shrub forage from either <em>Leucaena leucocephala </em>(CL), <em>Guazuma ulmifolia</em> (CG), or <em>Crescentia cujete</em> (CT). A randomized complete block design with repeated measurements over time was used. <strong>Results:</strong> The inclusion of shrub forage did not affect pH, organic matter degradation (OMD) or volatile fatty acids (VFA). The inclusion of shrub forage affected the degradation of structural components. The concentration of N-NH<sub>3</sub> increased in the CL diet compared to COL (p&lt;0.05). In general, methane production in terms of mL/day, mL/g DMi, mL/g DMd, and mL/gOMd was reduced for CL compared to COL (p&lt;0.05). <strong>Conclusions:</strong> Based on these results, inclusion of <em>Leucaena leucocephala</em>, <em>Guazuma ulmifolia</em> or <em>Crescentia cujete</em> on <em>B. pertusa</em>-based diets improves ruminal fermentation parameters and reduces <em>in vitro</em> methane production.</p> 2022-10-04T00:00:00-05:00 Copyright (c) 2021 Revista Colombiana de Ciencias Pecuarias Effect of iron-binding polypeptides and non-starch polysaccharides supplementation on growth performance and fecal scores of weaning pigs 2022-05-24T09:47:36-05:00 Jamil Talukder Clare F Mclnerney Kathryn L Nelson Baylee C Close Ajay K Srivastava Young D Jang <p><strong>Background: </strong>Weaning is the most stressful event in pig’s life, resulting in postweaning diarrhea and growth retardation. The supplementation of Advanced Digestion Enhancing Protein Plus Technology (ADEPPT<sup>TM</sup>), which contains iron-binding polypeptides and non-starch polysaccharides, to nursery diets may reduce the occurrence of diarrhea and enhance growth performance of weaning pigs. <strong>Objective:</strong> To evaluate the effect of ADEPPT<sup>TM</sup> supplementation on growth performance and fecal score in weaning pigs. <strong>Methods:</strong> At weaning, a total of 54 weaning pigs (initial body weight: 7.42 ± 0.52 kg) were assigned to 3 treatments in 3 replicates with 6 pigs per pen based on sex, breed, and body weight for a 28-d feeding trial. The pigs were fed corn-soybean meal-based diets containing 0.0, 0.5, and 1.0% of the ADEPPT<sup>TM</sup> product in 2 phases (d 0-14 and d 15-28 postweaning, respectively). In the first week (d 3-5 postweaning) of the trial, a pig was removed from each pen when diarrhea was observed, housed in a separate pen within treatment, and then treated for 3 days with a 100-ml solution of electrolytes and ADEPPT<sup>TM</sup> by drenching. Growth performance and fecal score (1=normal to 4=watery diarrhea) were measured. <strong>Results:</strong> In the feeding trial, there were no significant differences in body weight, average daily gain, and average daily feed intake throughout the overall period. However, a quadratic trend was observed in gain to feed ratio (p=0.09) for d 0-7 postweaning and overall period with increasing ADEPPT<sup>TM</sup> supplementation levels in which the greatest value was observed in the 0.5% ADEPPT<sup>TM</sup> level. The fecal score tended to decrease linearly with increasing ADEPPT<sup>TM</sup> levels during d 0-7 (p=0.11) and 0-14 (p=0.12) postweaning. There was no significant difference on fecal score of diarrheic pigs and average daily gain tended to increase linearly in d 21-28 postweaning (p=0.08) with increasing ADEPPT<sup>TM</sup> levels. <strong>Conclusion:</strong> These results indicate that 0.5% ADEPPT<sup>TM</sup> supplementation has a potential to enhance growth performance of weaning pigs and might be effective to prevent and control postweaning diarrhea.</p> 2022-10-04T00:00:00-05:00 Copyright (c) 2021 Revista Colombiana de Ciencias Pecuarias Collateral damage of fipronil in economic and ecologically important non-target species 2022-02-21T15:52:13-05:00 David Villar David J Schaeffer <p>Fipronil is an insecticide and acaricide widely used in agriculture and domestic animals worldwide. Ecotoxicology studies have shown that, even at the low concentrations used on target species, fipronil and its degradation products have a significant impact on non-target species, either by direct toxicity or indirect effects affecting the food chain. The negative effects of fipronil on non-target species of terrestrial and aquatic invertebrates and indirect effects on food chains have led to its use being banned or severely restricted in numerous countries, including all of the European Union, China, and the United States. Some of the species highly susceptible to fipronil are of great economic and ecological importance, including crayfish, brown shrimp, and bees. In particular, the impact on decimating bee hives worldwide is an example of fipronil´s undesirable effects on agriculture. Other species affected by fipronil -for which there are few studies- are biological predators of the same pests controlled by fipronil. Considering all the impacts on non-target species, the commercialization and indiscriminate use of fipronil in agriculture seem irresponsible. In Colombia, as of September 2021 and pressed by local beekeepers, the Instituto Colombiano Agropecuario (ICA) prohibited its use on avocado, coffee, citrus, and passiflower plantations. However, as long as its use is not prohibited in all agricultural applications, farmers could divert its use and continue using it in any other type of plantation. This paper describes the impact of fipronil on some of the beneficial invertebrate species of outmost economic and ecological importance.</p> 2022-10-04T00:00:00-05:00 Copyright (c) 2021 Revista Colombiana de Ciencias Pecuarias