Body weight increase of alpaca (Lama pacos) from birth to 6 month old in four regions of Chile
Body weight in alpacas from birth up to 6 month of age was studied in 4 different regions of Chile. Animals were located in the Andean high plateau (I region) (n=37); Magallanes (XII region) (n= 12); coastal dryland (VI region) (n=20, and semiarid interior valley nearby the Andean mountains (metropolitan region) (n=32). Each animal was weighed at birth and then once a month. No statistical differences in body weight by sex were observed in any group. All newborns double their birth weight at the second month of age, except in Magallanes where it took them 3 months. At six month of age, body weight in the subjects at the Andean high plateau represent 54.64% of mature weight and 179.26% of birth weight being the higher values obtained. The lower values correspond to the subjects in Magallanes 31.41% and 123.75% respectively. The best average weight gains were observed during the first month in all groups. After the fifth month animals continued to grow but with a declining rate of growth as compared to the first month. Again, the slower declining was observed in alpacas in the Andean high plateau and the higher declining was seen in the Magallanes and coastal dryland alpacas. Equations describing weight as a function of age monthly growing alpacas for each region were developed.
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Facultad de Ciencias Agrarias. Universidad Austral de Chile
1997
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rev-agrosur-cl-article-37852019-10-01T21:20:01Z Body weight increase of alpaca (Lama pacos) from birth to 6 month old in four regions of Chile CARACTERIZACION DE LA GANANCIA DE PESO CORPORAL DE ALPACAS (Lama pacos) DESDE EL NACIMIENTO Y HASTA LOS SEIS MESES DE EDAD EN CUATRO REGIONES DE CHILE Raggi, L. A. MacNiven, V. Rojas, R. Castellaro, G. Zolezzi, M. Latorre, E. Parraguez, V. H. Ferrando, G. camelids body weight lactation Body weight in alpacas from birth up to 6 month of age was studied in 4 different regions of Chile. Animals were located in the Andean high plateau (I region) (n=37); Magallanes (XII region) (n= 12); coastal dryland (VI region) (n=20, and semiarid interior valley nearby the Andean mountains (metropolitan region) (n=32). Each animal was weighed at birth and then once a month. No statistical differences in body weight by sex were observed in any group. All newborns double their birth weight at the second month of age, except in Magallanes where it took them 3 months. At six month of age, body weight in the subjects at the Andean high plateau represent 54.64% of mature weight and 179.26% of birth weight being the higher values obtained. The lower values correspond to the subjects in Magallanes 31.41% and 123.75% respectively. The best average weight gains were observed during the first month in all groups. After the fifth month animals continued to grow but with a declining rate of growth as compared to the first month. Again, the slower declining was observed in alpacas in the Andean high plateau and the higher declining was seen in the Magallanes and coastal dryland alpacas. Equations describing weight as a function of age monthly growing alpacas for each region were developed. El propósito de este estudio fue determinar la evolución del peso corporal en crías de alpacas en su periodo más crítico, primeros 6 meses de vida, en 4 regiones de Chile. Para ello se contó con 4 grupos de crías ubicadas en: Altiplano (I región) (n=37); Magallanes (XII región) (n=12); Secano costero (VI región) (n=20) y precordillera (región metropolitana) (n=32). En cada zona se siguió el manejo tradicional para la especie. Se realizó pesaje al nacimiento y luego en forma mensual. No se observaron diferencias significativas en los pesos de machos y hembras a lo largo del estudio. Todos los rebaños doblaron su peso al nacimiento al segundo mes, excepto el grupo Magallanes que lo hace en el tercero. Como porcentaje del peso adulto y del peso al nacimiento, el peso corporal alcanzado a los seis meses tuvo su mayor expresión en el grupo altiplano, 54,64% y 179,26% respectivamente y el menor en el grupo Magallanes, 31,41% y 123,75%. Tanto en Magallanes como en el secano costero las crías no experimentan ganancias de peso e incluso muestran valores negativos entre el quinto y sexto mes. En todos los grupos, durante el primer mes de vida, se presentan las mayores ganancias de peso diarias. Fueron elaboradas ecuaciones describiendo el peso corporal en función de la edad, para cada región. Facultad de Ciencias Agrarias. Universidad Austral de Chile 1997-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://revistas.uach.cl/index.php/agrosur/article/view/3785 10.4206/agrosur.1997.v25n2-10 Agro sur; Vol. 25 Núm. 2 (1997); 219-226 0719-4196 0304-8802 spa http://revistas.uach.cl/index.php/agrosur/article/view/3785/4664 Derechos de autor 1997 Agro sur |
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author |
Raggi, L. A. MacNiven, V. Rojas, R. Castellaro, G. Zolezzi, M. Latorre, E. Parraguez, V. H. Ferrando, G. |
spellingShingle |
Raggi, L. A. MacNiven, V. Rojas, R. Castellaro, G. Zolezzi, M. Latorre, E. Parraguez, V. H. Ferrando, G. Body weight increase of alpaca (Lama pacos) from birth to 6 month old in four regions of Chile |
author_facet |
Raggi, L. A. MacNiven, V. Rojas, R. Castellaro, G. Zolezzi, M. Latorre, E. Parraguez, V. H. Ferrando, G. |
author_sort |
Raggi, L. A. |
title |
Body weight increase of alpaca (Lama pacos) from birth to 6 month old in four regions of Chile |
title_short |
Body weight increase of alpaca (Lama pacos) from birth to 6 month old in four regions of Chile |
title_full |
Body weight increase of alpaca (Lama pacos) from birth to 6 month old in four regions of Chile |
title_fullStr |
Body weight increase of alpaca (Lama pacos) from birth to 6 month old in four regions of Chile |
title_full_unstemmed |
Body weight increase of alpaca (Lama pacos) from birth to 6 month old in four regions of Chile |
title_sort |
body weight increase of alpaca (lama pacos) from birth to 6 month old in four regions of chile |
description |
Body weight in alpacas from birth up to 6 month of age was studied in 4 different regions of Chile. Animals were located in the Andean high plateau (I region) (n=37); Magallanes (XII region) (n= 12); coastal dryland (VI region) (n=20, and semiarid interior valley nearby the Andean mountains (metropolitan region) (n=32). Each animal was weighed at birth and then once a month. No statistical differences in body weight by sex were observed in any group. All newborns double their birth weight at the second month of age, except in Magallanes where it took them 3 months. At six month of age, body weight in the subjects at the Andean high plateau represent 54.64% of mature weight and 179.26% of birth weight being the higher values obtained. The lower values correspond to the subjects in Magallanes 31.41% and 123.75% respectively. The best average weight gains were observed during the first month in all groups. After the fifth month animals continued to grow but with a declining rate of growth as compared to the first month. Again, the slower declining was observed in alpacas in the Andean high plateau and the higher declining was seen in the Magallanes and coastal dryland alpacas. Equations describing weight as a function of age monthly growing alpacas for each region were developed. |
publisher |
Facultad de Ciencias Agrarias. Universidad Austral de Chile |
publishDate |
1997 |
url |
http://revistas.uach.cl/index.php/agrosur/article/view/3785 |
work_keys_str_mv |
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