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Journal of Agriculture and Animal Sciences

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Este obra está bajo una licencia Creative Commons Atribución-NoComercial-SinDerivadas 2.5 Colombia.

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Browsing Journal of Agriculture and Animal Sciences by Author "Abreu Vélez, Adrián Manuel"

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    Aspectos sobre Rinotraqueítis Infecciosa Bovina
    (Corporación Universitaria Lasallista, 2014-10-22) Duque, Daniel; Ramón Estévez, Josué N; Abreu Vélez, Adrián Manuel; Moncada Velásquez, Marcela; Durango, Juan Carlos; Molina Palacios, Daniel
    The infectious bovine rhinotracheitis (IBR) is a contagious disease that affects bovines. It is essentially characterized by the presence of an exudative rhinotracheitis that can affect large bronchi of infected animals. Although the abortion is just a sequel of the respiratory disturbance, there are reports of viral groups with some abortive potential that can cause abortion outbreaks. In lactating cows, it causes milk production decrease and infertility. In Colombia there had been reported important data of serum-prevalence in the Caribbean, Andine and Pie de Monte Llanero regions, with important epidemiologic and economic impact. Here is presented a review about infectious bovine rhinotracheitis caused by herpesvirus, highlighting aspects of biologic properties of the virus, pathogenesis and clinical signs of the different ways of presentation of the disease.
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    Efecto protector de un sellador de barrera artificial en el post-sellado de pezones de 50 vacas en ordeño mecánico en el Norte de Antioquia
    (Corporación Universitaria Lasallista, 2014-10-22) R., Miguel Ángel; Giraldo, Juliana; Durango, Juan Carlos; Molina Palacios, Daniel; Abreu Vélez, Adrián Manuel; Moncada Velásquez, Marcela; Ramón E, Josué Nicolás
    Introduction. At the end of milking of the bovine female, the teat sphincter remains open and expanded for about 30 to 60 minutes. This time favors the entry of environmental microorganisms into the mammary gland, causing new infections and compromising the health of the cow. Objective. Bactericidal disinfectants used, such as iodine to prevent entry of microorganisms into the mammary gland after the milking routine, can easily be inactivated by contact with milk, manure, mud and urine; the nipple then remain unprotected and exposed to the entry of different microorganisms. The protective effect of artificial barrier sealant in dipping post-milking routine prevents the contact of the nipple with environmental microorganisms. Materials and method. The effect of a teat dip artificial barrier sealant was evaluated on the post;dipping in a mechanic milking routine preventing the contact between microorganisms and the nipple after the milking. Also the sealant forms a film on the nipple preventing the entry of bacteria into the udder. Two groups of animals (25 per group) were selected, a group was treated with the artificial barrier dipping in the post-milking period and in the control group was perform the normal routine process. In each group the hygienic quality was tested by Colony Forming Units (CFU/mL). Randomness, independence and normality of experimental errors, homogeneity of variance associated with the effects of variables, independence of action and variances: attached to the model assumptions were validated. There was perform descriptive statistics and ANOVA using SAS 9.0 software. Results. It was demonstrated that de use of a barrier protector decreases the amount of bacteria on the nipple surface in the moment of the milking routine.