Development of the Morphostructure and Meat Value in Chilota Lambs

Chilota sheep are typical of the Chiloé archipelago in southern Chile. The objectives of this study were: 1) To describe the development of the morphostructure of Chilota lambs in their first months of life using some variables that determine lamb meat value (zoometric traits and body weight) and 2)...

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Autores principales:	de la Barra,R, Martínez,M. E, Calderón,C, Morales,R, de la Fuente,L. F
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2012
Materias:	Sheep Postnatal development Morphology Body weight
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000400044
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spelling	oai:scielo:S0717-950220120004000442013-06-20Development of the Morphostructure and Meat Value in Chilota Lambsde la Barra,RMartínez,M. ECalderón,CMorales,Rde la Fuente,L. F Sheep Postnatal development Morphology Body weight Chilota sheep are typical of the Chiloé archipelago in southern Chile. The objectives of this study were: 1) To describe the development of the morphostructure of Chilota lambs in their first months of life using some variables that determine lamb meat value (zoometric traits and body weight) and 2) To determine the optimum slaughter age. Measurements were taken from 12 male single-born lambs. Body weight, Withers height; Perimeter of thorax, Chest depth, Shoulder point width and Body length were measured in each animal. The first measurements were taken at 7 days old, and the rest at 37, 67, 97, 127, 157 and 187 days old. The body weight variables and zoometric traits developed allometrically throughout the growth phase. The correlation coefficient between all the traits was very high, varying between 0.91 and 0.98. The zoometric variable that best predicted body weight was Perimeter of thorax (r2=0.93), which was fully developed in 90% of the animals at 97 days old. Maximum growth was recorded in all the studied variables during the first control month, days 7-37, but then it decreased gradually. This decrease was moderate until day 127, becoming very low from then on until end of the study. The optimum age for slaughtering fattened lambs is approximately four months, as from day 127 the daily growth rate slows down considerably, to 61.81 g/day, in comparison with the previous stage, which is 220.00 g/day. Therefore, the maintenance of lambs after four months is not productively efficient.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.30 n.4 20122012-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000400044en10.4067/S0717-95022012000400044
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Sheep Postnatal development Morphology Body weight
spellingShingle	Sheep Postnatal development Morphology Body weight de la Barra,R Martínez,M. E Calderón,C Morales,R de la Fuente,L. F Development of the Morphostructure and Meat Value in Chilota Lambs
description	Chilota sheep are typical of the Chiloé archipelago in southern Chile. The objectives of this study were: 1) To describe the development of the morphostructure of Chilota lambs in their first months of life using some variables that determine lamb meat value (zoometric traits and body weight) and 2) To determine the optimum slaughter age. Measurements were taken from 12 male single-born lambs. Body weight, Withers height; Perimeter of thorax, Chest depth, Shoulder point width and Body length were measured in each animal. The first measurements were taken at 7 days old, and the rest at 37, 67, 97, 127, 157 and 187 days old. The body weight variables and zoometric traits developed allometrically throughout the growth phase. The correlation coefficient between all the traits was very high, varying between 0.91 and 0.98. The zoometric variable that best predicted body weight was Perimeter of thorax (r2=0.93), which was fully developed in 90% of the animals at 97 days old. Maximum growth was recorded in all the studied variables during the first control month, days 7-37, but then it decreased gradually. This decrease was moderate until day 127, becoming very low from then on until end of the study. The optimum age for slaughtering fattened lambs is approximately four months, as from day 127 the daily growth rate slows down considerably, to 61.81 g/day, in comparison with the previous stage, which is 220.00 g/day. Therefore, the maintenance of lambs after four months is not productively efficient.
author	de la Barra,R Martínez,M. E Calderón,C Morales,R de la Fuente,L. F
author_facet	de la Barra,R Martínez,M. E Calderón,C Morales,R de la Fuente,L. F
author_sort	de la Barra,R
title	Development of the Morphostructure and Meat Value in Chilota Lambs
title_short	Development of the Morphostructure and Meat Value in Chilota Lambs
title_full	Development of the Morphostructure and Meat Value in Chilota Lambs
title_fullStr	Development of the Morphostructure and Meat Value in Chilota Lambs
title_full_unstemmed	Development of the Morphostructure and Meat Value in Chilota Lambs
title_sort	development of the morphostructure and meat value in chilota lambs
publisher	Sociedad Chilena de Anatomía
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022012000400044
work_keys_str_mv	AT delabarrar developmentofthemorphostructureandmeatvalueinchilotalambs AT martinezme developmentofthemorphostructureandmeatvalueinchilotalambs AT calderonc developmentofthemorphostructureandmeatvalueinchilotalambs AT moralesr developmentofthemorphostructureandmeatvalueinchilotalambs AT delafuentelf developmentofthemorphostructureandmeatvalueinchilotalambs
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Development of the Morphostructure and Meat Value in Chilota Lambs

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