Blood metabolic indicators of dairy genotypes grazing in the province of Napo-Ecuador

• Published in: La Granja: Revista de Ciencias de la Vida 2017-07 (2), p.119-130
• Main Authors: Vargas Burgos, Julio César, Barbona, Ivana, Marini, Pablo Roberto, Quinteros Pozo, Orlando Roberto
• Format: Article
• Language: eng ; spa
• Subjects: Creatinina; Creatinine; gene groups; glucosa; glucose; grazing system; grupos génicos; proteínas totales; sistema a pastoreo; total proteins; urea
• ISSN: 1390-8596; 1390-3799; 1390-8596
• DOI: 10.17163/lgr.n26.2017.10

The aim of this study was to evaluate the energy-blood protein metabolism in dairy cows four genotypes first lactationunder grazing in Canton Arosemena Tola, Napo, Ecuador. 36 dairy cows in first parity crosses of the genotypes wereevaluated: Bos Indicus x Gir (GIR), Bos Indicus x Brown Swiss (BS), Bos Indicus x Jersey (J) and Bos indicus x Sahiwal(S). Blood samples coccygeal vein on days 60 and 21 were taken before of calving, the time of calving and at 30, 60and 90 days after of calving. Values were determined in plasma, glucose, urea, creatinine, and total protein. Noneof the variables showed significant differences (p 0.05) between races and the values obtained for all they werebelow normal values for dairy cows. Glucose showed no significant difference (p 0.05) over time. However, forurea, creatinine and total proteins were significant differences (p0,001) over time. One set was used Local regressionsmoothing parameter equal to 0.8 was to study how the trajectory of the variable over time. A mixed linear model foreach variable then adjusted, considering a node in cases for which a change in the trajectory was observed at someparticular time (as noted in the graph 1, 2, 3 Local regression). It was concluded that for the four dairy genotypesstudied no differences were found in the concentration of metabolic indicators El objetivo de este trabajo fue evaluar el metabolismo energético/proteico en sangre de vacas lecheras de cuatrogenotipos de primera lactancia en condiciones de pastoreo en el cantón Arosemena Tola, Napo, Ecuador. Se evaluaron36 vacas lecheras de primer parto cruzas de los genotipos: Bos Indicus x Gir (GIR), Bos Indicus x Brown Swiss (BS),Bos Indicus x Jersey (J) y Bos Indicus x Sahiwal (S). Se tomaron muestras de sangre de la vena coccígea los días 60 y21 antes del parto, al momento del parto y a los 30, 60 y 90 días después del parto. Se determinaron los valores enplasma de, glucosa, urea, creatinina y proteínas totales. Ninguna de las variables presentó diferencias significativas(p0,05) entre razas y los valores obtenidos para todos se encontraron por debajo de los valores normales para lasvacas lecheras. La glucosa no mostró diferencias significativas (p0,05) en el tiempo. En cambio, para Urea, Creatininay Proteínas Totales existieron diferencias significativas (p0,001) a través del tiempo. Utilizando una regresión localcon parámetro de suavizado igual a 0,8 para estudiar cómo era la trayectoria de la variable en el tiempo. Luego, seaj