Efecto de las enfermedades en posparto temprano sobre el intervalo parto concepción: estudio de cohorte en vacas lecheras de Pasto, Colombia

Dario Antonio Antonio Vallejo Timaran, Carmenza Janneth Benavides Melo, Diana Patricia Morillo Patiño, Juan Manuel Astaiza Martinez, Carlos Alberto Chaves Velazques

Resumen


La mayor predisposición de las vacas lecheras a enfermar y presentar un bajo desempeño reproductivo se da durante las primeras semanas de lactancia. Con el objetivo de determinar la incidencia de enfermedades en posparto temprano y su efecto en el incremento del intervalo parto – concepción se realizó un estudio longitudinal de cohorte en vacas (n=706) de sistemas de producción lechera especializada del municipio de Pasto, Colombia. El seguimiento se realizó durante los primeros 45 días post-parto en 47 hatos para determinar la presencia de enfermedad en el posparto, posteriormente se realizaron seguimientos mensuales para diagnóstico de gestación. Mediante regresión logística se estableció el efecto de la exposición a enfermedad en el posparto temprano sobre el incremento de días abiertos (IPC >120 días). En el estudio se determinó que las enfermedades que aportan significativamente al incremento del Intervalo parto – concepción a un número mayor a 120 días fueron: neumonía (p=0,001; OR=4,2); mastitis clínica (p=0,001; OR=7,3); metritis (p=0,014; OR=48,1); retención de placenta (p=0,001; OR=17,07); alteración cardiaca (p=0,0001; OR=2,9) y cojeras / claudicaciones (p=0,014; OR=2,9). El estudio permitió concluir que la ocurrencia de signos clínicos relacionados con enfermedad en el posparto temprano tiene efecto sobre el incremento de días abiertos con intervalos parto – concepción mayores a 120 días. La ocurrencia de enfermedad durante el posparto temprano, puede predecir la probabilidad de ocurrencia de bajo desempeño reproductivo.

 

Effect of early postpartum diseases on calving – conception interval: a cohort study in dairy cows from Pasto, Colombia

Major predisposition of dairy cattle to disease and shown low reproductive performance occurs during the first weeks of lactation. With the objective of determine the incidence of early postpartum diseases and their effect on the increase of the conception interval, a longitudinal cohort study was carried out in cows (n = 706) of dairy production systems in the municipality of Pasto, Colombia. Follow-up was performed during the first 45 days postpartum in 47 herds to determine the presence of postpartum disease, and monthly follow-ups were performed for gestation diagnosis. The effect of exposure to disease in the early postpartum period on the increase of open days was established through logistic regression. In the study, the diseases that contribute significantly to the increase of calving - conception interval to a number greater than 120 days were: pneumonia (p-value=0.001; OR=4.2); Clinical mastitis (p-value=0.001; OR=7.3); Metritis (p-value=0.014, OR=48.1); Placenta retention (p-value=0.001; OR=17.07); Cardiac alteration (p-value=0.0001, OR=2.9) and lameness (p-value=0.014; OR=2,9). The study allowed to conclude that occurrence of early postpartum disease has an effect on the increase of open days with calving – conception intervals greater than 120 days. Occurrence of disease during early postpartum can predict the probability of occurrence of low reproductive performance.

Keywords: cattle, clinical symptoms, infertility, lactation.

 

Efeito da doença no intervalo parto concepção pós-parto: estudo de coorte em vacas leiteiras Pasto, Colômbia

A maioria predisposição vaca ficar doente e apresentar problemas de reprodução ocorre durante as primeiras semanas de lactação. A fim de determinar a incidência da doença no pós-parto precoce e seu efeito sobre o aumento do intervalo parto - concepção foi realizado um estudo longitudinal de coorte em vacas (n = 706) dos sistemas de produção de leite especializados no município de Pasto, Colômbia. O monitoramento foi realizado durante os primeiros 45 dias pós-parto em 47 rebanhos para determinar a presença da doença no pós-parto, em seguida, foram feitas mensalmente follow-ups para diagnóstico de gestação. A regressão logística estabeleceu-se o efeito da exposição a doença no início da pós-parto em aumentar dias abertos (IPC >120 dias). No estudo, foi determinado que as doenças que contribuem significativamente para o aumento do intervalo parto - concepção até a um número superior a 120 dias foram: pneumonia (p = 0,001; OR = 4.2); mastite clínica (p = 0,001; OR = 7,3); metrite (p = 0,014; OR = 48,1); retenção de placenta (p = 0,001; OR = 17,07); disfunção cardíaca (p = 0,0001, OR = 2,9) e claudicação / claudicação (p = 0,014; OR =). Em conclusão, a ocorrência de sinais clínicos relacionados com a doença no início da pós-parto tem um efeito sobre o aumento dos dias abertos com intervalos de nascimento – concepção maior até 120 dias. A ocorrência da doença durante o início do pós-parto, pode prever a probabilidade de ocorrência de baixo desempenho reprodutivo.

Palavras chave: bovino, infertilidade, manifestações clínicas, lactação.

DOI: http://dx.doi.org/10.21615/cesmvz.12.1.3


Palabras clave


bovino, infertilidad, lactancia, manifestaciones clínicas.

Citas


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