TY - JOUR
T1 - Estimación de excreción fecal en alpacas (Vicugna pacos) bajo condiciones estabuladas usando dióxido de titanio
AU - Rosina Camargo, H.
AU - Carlos Vílchez, P.
AU - Juan Olazábal, L.
AU - Felipe San Martín, H.
N1 - Publisher Copyright:
© 2019 Universidad Nacional Mayor de San Marcos. All rights reserved.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019
Y1 - 2019
N2 - The aim of this study was to estimate the production of faeces in alpacas with the use of titanium dioxide (TiO2). A square 4x4 Latin design was used, with four animals, four treatments and four periods. Each period last for 14 days of evaluation and seven days of rest. The treatments were: T2.5 (1), 2.5 g of TiO2/animal/day; T1.25(2), 2.5 g of TiO2/animal/day divided into two doses (07:00, 16:00); T5(1), 5 g of TiO2/animal/day; T2.5(2), 5 g of TiO2/animal/day divided into two doses (07:00, 16:00). The percentages of the recovery of TiO2 were 90, 82, 78 and 52% for T2.5(1), T1.25(2), T5(1) and T2.5(2), respectively, being T2.5(2) different from the other treatments (p=0.00013). The parameters of the TiO2 excretion pattern were: intercept of the curve of TiO2 excretion at time zero (a), maximum excretion of TiO2 at time (b), constant rate of excretion of b (c), time needed of excretion of TiO2 so that it has excreted half of the initial concentration (T1/2), and time to reach the balance of excretion of the marker (T (a+b)). There was no difference between treatments for the values of a, c, mean T and T, but there was a significant difference in the value of b between the administration of the marker of 2.5 vs 5 g (p<0.0001). The averages of faecal production estimated with TiO2 vs. faecal production observed directly was different in T1.25(2), T5(1) and T2.5(2) (p<0.05), but not in T2.5(1). In conclusion, the time in which the excretion equilibrium of TiO2 is reached is approximately eight days and the dose of 2.5 g of TiO2 once a day more accurately estimates faecal production in alpacas.
AB - The aim of this study was to estimate the production of faeces in alpacas with the use of titanium dioxide (TiO2). A square 4x4 Latin design was used, with four animals, four treatments and four periods. Each period last for 14 days of evaluation and seven days of rest. The treatments were: T2.5 (1), 2.5 g of TiO2/animal/day; T1.25(2), 2.5 g of TiO2/animal/day divided into two doses (07:00, 16:00); T5(1), 5 g of TiO2/animal/day; T2.5(2), 5 g of TiO2/animal/day divided into two doses (07:00, 16:00). The percentages of the recovery of TiO2 were 90, 82, 78 and 52% for T2.5(1), T1.25(2), T5(1) and T2.5(2), respectively, being T2.5(2) different from the other treatments (p=0.00013). The parameters of the TiO2 excretion pattern were: intercept of the curve of TiO2 excretion at time zero (a), maximum excretion of TiO2 at time (b), constant rate of excretion of b (c), time needed of excretion of TiO2 so that it has excreted half of the initial concentration (T1/2), and time to reach the balance of excretion of the marker (T (a+b)). There was no difference between treatments for the values of a, c, mean T and T, but there was a significant difference in the value of b between the administration of the marker of 2.5 vs 5 g (p<0.0001). The averages of faecal production estimated with TiO2 vs. faecal production observed directly was different in T1.25(2), T5(1) and T2.5(2) (p<0.05), but not in T2.5(1). In conclusion, the time in which the excretion equilibrium of TiO2 is reached is approximately eight days and the dose of 2.5 g of TiO2 once a day more accurately estimates faecal production in alpacas.
KW - Alpacas
KW - External marker
KW - Faecal production
KW - Titanium dioxide
UR - http://www.scopus.com/inward/record.url?scp=85065556524&partnerID=8YFLogxK
U2 - 10.15381/rivep.v30i1.15765
DO - 10.15381/rivep.v30i1.15765
M3 - Artículo
AN - SCOPUS:85065556524
VL - 30
SP - 158
EP - 166
JO - Revista de Investigaciones Veterinarias del Peru
JF - Revista de Investigaciones Veterinarias del Peru
SN - 1682-3419
IS - 1
ER -