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Morphological Description and Live Weight Prediction from Body Measurements of Socorro Island Merino Lambs
SIMPLE SUMMARY: Prediction equations allow small farmers who do not have a scale to estimate the live weight of animals from their body measurements. The aim of this study was to describe the morphology and estimate the live weight from body measurements of Socorro Island Merino lambs. A group of So...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10295714/ https://www.ncbi.nlm.nih.gov/pubmed/37370488 http://dx.doi.org/10.3390/ani13121978 |
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author | Castillo, Paola Estefanía Macedo, Rafael Julio Arredondo, Victalina Zepeda, José Luis Valencia-Posadas, Mauricio Haubi, Carlos Urban |
author_facet | Castillo, Paola Estefanía Macedo, Rafael Julio Arredondo, Victalina Zepeda, José Luis Valencia-Posadas, Mauricio Haubi, Carlos Urban |
author_sort | Castillo, Paola Estefanía |
collection | PubMed |
description | SIMPLE SUMMARY: Prediction equations allow small farmers who do not have a scale to estimate the live weight of animals from their body measurements. The aim of this study was to describe the morphology and estimate the live weight from body measurements of Socorro Island Merino lambs. A group of Socorro Island Merino lambs was recorded from birth to year for live weight, rump width, rump length, withers height, body length, cannon bone perimeter, and chest girth, width, and depth. Sex and crossbreeding with hair breeds affected weight and mainly thoracic morphology at birth and at the year of Socorro Island Merino lambs, with the greatest and smaller weights and body measurements being observed in crossbreed males and purebred females, respectively. The highly significant and positive correlation between LW and CG suggests that this variable can be used as the sole predictor in exponential and linear models and in combination with other measurements in multiple linear models to provide a good estimate of LW. Chest measurements could be used as an indirect selection criterion to improve growth traits in this breed. ABSTRACT: The aim of this study was to describe the morphology and estimate live weight from body measurements of Socorro Island Merino lambs. A group of Socorro Island Merino lambs was recorded from birth to year for live weight, rump width, rump length, withers height, body length, cannon bone perimeter, and chest girth, width, and depth. The effect of the lamb type on body measurements and live weight was analyzed using ANOVA, Pearson’s correlation analysis was performed to estimate the relationship between body measurements and live weight, multiple linear regressions were fitted to obtain prediction equations of live weight from the body measurements and finally, chest girth was used to generate prediction equations using linear and exponential models. At birth and at year, differences were observed in body measurements, especially those related to the thoracic region, with crossbred males showing the highest values. Live weight was correlated with almost all the body measurements, with the highest coefficients observed with chest girth, chest width, and chest depth. Live weight can be accurately predicted from multiple regression equations using several body measurements, but using only chest girth (CG) as a predictor, the exponential equation W(0–365) = 0.9142 exp((0.0462 CG)) showed the best accuracy. |
format | Online Article Text |
id | pubmed-10295714 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-102957142023-06-28 Morphological Description and Live Weight Prediction from Body Measurements of Socorro Island Merino Lambs Castillo, Paola Estefanía Macedo, Rafael Julio Arredondo, Victalina Zepeda, José Luis Valencia-Posadas, Mauricio Haubi, Carlos Urban Animals (Basel) Article SIMPLE SUMMARY: Prediction equations allow small farmers who do not have a scale to estimate the live weight of animals from their body measurements. The aim of this study was to describe the morphology and estimate the live weight from body measurements of Socorro Island Merino lambs. A group of Socorro Island Merino lambs was recorded from birth to year for live weight, rump width, rump length, withers height, body length, cannon bone perimeter, and chest girth, width, and depth. Sex and crossbreeding with hair breeds affected weight and mainly thoracic morphology at birth and at the year of Socorro Island Merino lambs, with the greatest and smaller weights and body measurements being observed in crossbreed males and purebred females, respectively. The highly significant and positive correlation between LW and CG suggests that this variable can be used as the sole predictor in exponential and linear models and in combination with other measurements in multiple linear models to provide a good estimate of LW. Chest measurements could be used as an indirect selection criterion to improve growth traits in this breed. ABSTRACT: The aim of this study was to describe the morphology and estimate live weight from body measurements of Socorro Island Merino lambs. A group of Socorro Island Merino lambs was recorded from birth to year for live weight, rump width, rump length, withers height, body length, cannon bone perimeter, and chest girth, width, and depth. The effect of the lamb type on body measurements and live weight was analyzed using ANOVA, Pearson’s correlation analysis was performed to estimate the relationship between body measurements and live weight, multiple linear regressions were fitted to obtain prediction equations of live weight from the body measurements and finally, chest girth was used to generate prediction equations using linear and exponential models. At birth and at year, differences were observed in body measurements, especially those related to the thoracic region, with crossbred males showing the highest values. Live weight was correlated with almost all the body measurements, with the highest coefficients observed with chest girth, chest width, and chest depth. Live weight can be accurately predicted from multiple regression equations using several body measurements, but using only chest girth (CG) as a predictor, the exponential equation W(0–365) = 0.9142 exp((0.0462 CG)) showed the best accuracy. MDPI 2023-06-14 /pmc/articles/PMC10295714/ /pubmed/37370488 http://dx.doi.org/10.3390/ani13121978 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Castillo, Paola Estefanía Macedo, Rafael Julio Arredondo, Victalina Zepeda, José Luis Valencia-Posadas, Mauricio Haubi, Carlos Urban Morphological Description and Live Weight Prediction from Body Measurements of Socorro Island Merino Lambs |
title | Morphological Description and Live Weight Prediction from Body Measurements of Socorro Island Merino Lambs |
title_full | Morphological Description and Live Weight Prediction from Body Measurements of Socorro Island Merino Lambs |
title_fullStr | Morphological Description and Live Weight Prediction from Body Measurements of Socorro Island Merino Lambs |
title_full_unstemmed | Morphological Description and Live Weight Prediction from Body Measurements of Socorro Island Merino Lambs |
title_short | Morphological Description and Live Weight Prediction from Body Measurements of Socorro Island Merino Lambs |
title_sort | morphological description and live weight prediction from body measurements of socorro island merino lambs |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10295714/ https://www.ncbi.nlm.nih.gov/pubmed/37370488 http://dx.doi.org/10.3390/ani13121978 |
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