Evaluation of ruminal development of woolly lambs and half blood Santa Inés lambs

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In recent years, studies on the growth and development of certain animal organs and their implications for their future productivity have been emphasized. The objective of the present work was to evaluate the ruminal development of woolly lambs and halfblood Santa Inés lambs at different slaughter w...

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Autores principales: Martinez, E, Yáñez, E. A., Quintana, C., Fernández, J. A.
Formato: Artículo revista
Lenguaje:Español
Publicado: Universidad Nacional del Nordeste 2019
Materias:
Ovino
crecimiento
biotipo
desarrollo ruminal
sexo
peso
Sheep
growth
biotype
ruminal development
sex
weight
Acceso en línea:https://revistas.unne.edu.ar/index.php/vet/article/view/4130
Aporte de:
Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
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record_format ojs
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Español
format Artículo revista
topic Ovino
crecimiento
biotipo
desarrollo ruminal
sexo
peso
Sheep
growth
biotype
ruminal development
sex
weight
spellingShingle Ovino
crecimiento
biotipo
desarrollo ruminal
sexo
peso
Sheep
growth
biotype
ruminal development
sex
weight
Martinez, E
Yáñez, E. A.
Quintana, C.
Fernández, J. A.
Evaluation of ruminal development of woolly lambs and half blood Santa Inés lambs
topic_facet Ovino
crecimiento
biotipo
desarrollo ruminal
sexo
peso
Sheep
growth
biotype
ruminal development
sex
weight
author Martinez, E
Yáñez, E. A.
Quintana, C.
Fernández, J. A.
author_facet Martinez, E
Yáñez, E. A.
Quintana, C.
Fernández, J. A.
author_sort Martinez, E
title Evaluation of ruminal development of woolly lambs and half blood Santa Inés lambs
title_short Evaluation of ruminal development of woolly lambs and half blood Santa Inés lambs
title_full Evaluation of ruminal development of woolly lambs and half blood Santa Inés lambs
title_fullStr Evaluation of ruminal development of woolly lambs and half blood Santa Inés lambs
title_full_unstemmed Evaluation of ruminal development of woolly lambs and half blood Santa Inés lambs
title_sort evaluation of ruminal development of woolly lambs and half blood santa inés lambs
description In recent years, studies on the growth and development of certain animal organs and their implications for their future productivity have been emphasized. The objective of the present work was to evaluate the ruminal development of woolly lambs and halfblood Santa Inés lambs at different slaughter weights. The trial was conducted in Monte Caseros Department, Corrientes Province, Argentina. A batch of sheep of dual-purpose woolly biotype (Ideal base), was used. For the service, half of the woolly sheeps were crossed with Santa Inés males, and the other half with Ideal breeding animals, which were synchronized. The test was carried out with the woolly lambs and half-blood Santa Inés lambs (woolly females x males Santa Inés). The experimental approach used was a factorial design by biotype, sex and slaughter weight. Five animals were slaughtered by biotype (wool and half-blood), sex (males and females) and by each slaughter weight: 10, 17 and 24 kg (30 males and 30 females). The samples were fixed and then subjected to routine histological processing. The morphometric analysis were performed using an image analyzer system. The thickness of the mucous membrane, epithelium and muscle tunic of the rumen were determined, as well as the length and amplitude of the papillae, obtaining the averages of the measurements. The data were subjected to a multivariate statistical analysis, making correlations between the variables, analysis of principal components and analysis of the variance. The most influential variables in the process of ruminal development were length and width of papillae, thickness of the epithelium and thickness of the muscular wall. The largest sizes of them were observed in the animals slaughtered at 24 kg of live weight. It appears that the half blood biotype affects the development of the variables, more in females than in males. 
publisher Universidad Nacional del Nordeste
publishDate 2019
url https://revistas.unne.edu.ar/index.php/vet/article/view/4130
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spelling I48-R154-article-41302025-02-12T21:59:01Z Evaluation of ruminal development of woolly lambs and half blood Santa Inés lambs Evaluación del desarrollo ruminal de corderos lanados y corderos media sangre Santa Inés faenados a diferentes pesos Martinez, E Yáñez, E. A. Quintana, C. Fernández, J. A. Ovino crecimiento biotipo desarrollo ruminal sexo peso Sheep growth biotype ruminal development sex weight In recent years, studies on the growth and development of certain animal organs and their implications for their future productivity have been emphasized. The objective of the present work was to evaluate the ruminal development of woolly lambs and halfblood Santa Inés lambs at different slaughter weights. The trial was conducted in Monte Caseros Department, Corrientes Province, Argentina. A batch of sheep of dual-purpose woolly biotype (Ideal base), was used. For the service, half of the woolly sheeps were crossed with Santa Inés males, and the other half with Ideal breeding animals, which were synchronized. The test was carried out with the woolly lambs and half-blood Santa Inés lambs (woolly females x males Santa Inés). The experimental approach used was a factorial design by biotype, sex and slaughter weight. Five animals were slaughtered by biotype (wool and half-blood), sex (males and females) and by each slaughter weight: 10, 17 and 24 kg (30 males and 30 females). The samples were fixed and then subjected to routine histological processing. The morphometric analysis were performed using an image analyzer system. The thickness of the mucous membrane, epithelium and muscle tunic of the rumen were determined, as well as the length and amplitude of the papillae, obtaining the averages of the measurements. The data were subjected to a multivariate statistical analysis, making correlations between the variables, analysis of principal components and analysis of the variance. The most influential variables in the process of ruminal development were length and width of papillae, thickness of the epithelium and thickness of the muscular wall. The largest sizes of them were observed in the animals slaughtered at 24 kg of live weight. It appears that the half blood biotype affects the development of the variables, more in females than in males.  En los últimos años se acentuaron los estudios del crecimiento y desarrollo de determinados órganos de los animales y sus implicancias en la productividad futura de los mismos. El objetivo del presente trabajo fue evaluar el desarrollo ruminal de corderos lanados y media sangre Santa Inés en diferentes pesos de faena. El ensayo fue realizado en el Departamento Monte Caseros, Provincia de Corrientes, Argentina. Se utilizó un lote de ovejas del biotipo lanado doble propósito de base Ideal. Para el servicio, la mitad de las ovejas lanadas fueron cruzadas con machos Santa Inés y la otra mitad, con reproductores Ideal, que fueron sincronizadas. El ensayo se realizó con los corderos lanados y media sangre (hembras lanadas x machos deslanados). El planteo experimental utilizado fue un diseño factorial por biotipo, sexo y peso de faena. Fueron sacrificados cinco animales por biotipo (lanados y media sangre), sexo (machos y hembras) y por cada peso de faena: 10, 17 y 24 kg de peso vivo promedio (en total 60 animales, 30 machos y 30 hembras). Las muestras fueron fijadas y posteriormente sometidas al procesamiento histológico de rutina. Los análisis morfométricos se realizaron utilizando un sistema analizador de imágenes. Se determinaron los espesores de la mucosa, epitelio y túnica muscular del rumen, así como la longitud y amplitud de las papilas, obteniéndose los promedios de las medidas. Los datos fueron sometidos a un análisis estadístico multivariado, realizando correlaciones entre las variables, análisis de componentes principales y análisis de la varianza. Las variables más influyentes en el proceso de desarrollo ruminal fueron: largo y ancho de papila, espesor del epitelio y grosor de la pared muscular. Los mayores tamaños de las mismas se observaron en los animales faenados a los 24 kg de peso vivo. Surge que el biotipo media sangre afecta el desarrollo de las variables, más en las hembras que en los machos.  Universidad Nacional del Nordeste 2019-12-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/vet/article/view/4130 10.30972/vet.3024130 Revista Veterinaria; Vol. 30 Núm. 2 (2019); 21-30 1669-6840 1668-4834 spa https://revistas.unne.edu.ar/index.php/vet/article/view/4130/3767 Derechos de autor 2019 E Martinez, E. A. Yáñez, C. Quintana, J. A. Fernández https://creativecommons.org/licenses/by-nc/4.0

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