This study was conducted at Carimagua Research Centre in a high savanna area in the eastern plains of Colombia. The objectives were to identify the pathogenic parasites prevalent in the area and to study their seasonal variations and ecological conditions for use in planning control measures. The calves from two groups of 50 cows each (zebu crossbred) were used. Group I calves were born at the beginning of the rainy season and Group II calves later in the same period. The highest faecal egg counts observed were of trichostrongylid eggs. In necropsied animals Cooperia had high populations followed by Haemonchus. Throughout the rainy season there were favourable conditions for development and transmission of calf nematodes; animals born towards the end of the rainy season developed a lower infestation level which is probably easier to control. The animals were particularly susceptible to infestation with gastro-intestinal parasites at weaning. From these observations and in view of the relatively low stocking rate and the sequential burning of the savanna it is suggested that deworming be done at eight and 18 months of age.
Interpretations and recommendations on professional practices from the project "Technical assistance for the strengthening of dairy production in Caldas-Colombia" ABSTRACT: The professional practices at the University constitute a set of activities carried out by students in perspective of acquiring useful skills for their professional training. The project "Technical assistance for the strengthening of milk production in the Department of Caldas" linked 88 interns to make up 16 Local Work Units in each municipality in the Department. The students were interns of the of Veterinary Medicine and Animal Science (33%), Agricultural Engineering (15%), Food Engineering (8%), Social Work and Family Development (7% each), Animal Science (6%) and Marketing (1%) programs. At the technical level, trainees from SENA from different specialties (15%) and Forestry technicians of CINOC (9%), also participated. To systematize the experience, which allowed to recover the learnings and recommendations arising from the project and provided input to strengthen the institutional policies that guide the practices at Universidad de Caldas, 96 semistructured interviews to key actors, 12 municipal forums and a focus group with 35 participating students were applied. The analysis of the information was carried out in three relational phases: descriptive, interpretative and construction of meaning. Systematization results provide an important extension of the meanings attributed to the practice as: meaningful learning community; social space for encounters, tensions and tacit knowledge, and strategy of regionalization of the University. Likewise, the systematization allowed recovering policy proposals to strengthen practices, which were grouped into three orders: pedagogical, curricular and administrative.
Summary External parasites were evaluated in cattle from 12 farms in Brazil and 16 in Colombia, both areas located in the tropics using extensive management conditions. Ticks were found in 12% of adult animals from the Colombian Eastern Plains and the Cerrados of Mato Grosso, and 19% of cattle from the Cerrados of Goias. Dermatobia hominis larvae (“berne”, “nuche”) were found in 32% of animals from Mato Grosso, 3.7% of animals from the Colombian Eastern Plains, and 0.8% of animals from Goias. In addition, infestation due to cattle lice (Haematopinus quadripertusus) was observed in 62% of animals from Goias, in 41% of animals from Mato Grosso, and in 10% of animals from the Colombian Eastern Plains. High infestations of horn flies were found in animals from the Colombian Eastern Plains, and frequent skin lesions were produced by Stephanofilaria sp, in the same region. These two parasites, however, were not seen in animals from either Cerrados regions in Brazil. Prophylactic schemes for parasites are almost completely absent in all three areas studied. Dermatobia hominis larvae were found to be one of the most important external parasites affecting cattle from extensive livestock operations in tropical areas of Latin America. It is suggested that a method of preventive medical control be developed for this parasite. Zusammenfassung Epidemiologische Bestimmung der Ektoparasiten von Rindern aus den brasilianischen Cerrados und den columbianischen Ostebenen Ektoparasiten wurden bei Rindern aus 12 Farmen in Brasilien und 16 in Columbien ermittelt beide Gebiete liegen in den Tropen und wenden extensive Haltungsbedingungen an. Zecken wurden bei 12% der erwachsenen Tiere von den columbianischen Ostebenen und den Cerrados des Mato Grosso gefunden, und bei 19% der Rinder aus den Cerrados von Goias. Dermatobia hominis Larven („berne”, „nuche”) wurden in 32% der Tiere vom Mato Grosso gefunden, bei 3,7% der Tiere von den columbianischen Ostebenen und bei 0,8% der Tiere von Goias. Zusätzlich wurde ein Befall mit der Rinderlaus (Haemutopinus quadripertusus) bei 62% der Tiere von Goias beobachtet, bei 41% der Tiere vom Mato Grosso und bei 10% der Tiere von den columbianischen Ostebenen. Ein starker Befall mit Hornfliegen wurde bei den Tieren von den columbianischen Ostebenen gefunden, und haufige Hautlasionen wurden durch Stephanofilaria sp. in der selben Region verursacht. Diese beiden Parasiten kamen jedoch bei den Tieren aus den Cerrado Gebieten in Brasilien nicht vor. Vorbeugende Maßnahmen gegen Parasiten sind in allen drei untersuchten Gebieten nahezu vollstandig unbekannt. Es wurde festgestellt, daß Dermatobia hominis Larven eine der wichtigsten Ektoparasiten sind, die Rinder von extensiven Tierhaltungsbetrieben in den tropischen Gebieten von Lateinamerika befallen. Es wird vorgeschlagen, daß für diesen Parasit eine Methode für eine vorbeugende medizinische Kontrolle entwickelt wird. Résumé Evaluation épidémiologique des ectoparasites des bovins de Cerrado brésiliens et des plaines de l'est en Colombie On a relevé les ectop...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.