Cargando…
A live weight–heart girth relationship for accurate dosing of east African shorthorn zebu cattle
The accurate estimation of livestock weights is important for many aspects of livestock management including nutrition, production and appropriate dosing of pharmaceuticals. Subtherapeutic dosing has been shown to accelerate pathogen resistance which can have subsequent widespread impacts. There are...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Netherlands
2012
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3552367/ https://www.ncbi.nlm.nih.gov/pubmed/22923040 http://dx.doi.org/10.1007/s11250-012-0220-3 |
_version_ | 1782256667734310912 |
---|---|
author | Lesosky, Maia Dumas, Sarah Conradie, Ilana Handel, Ian Graham Jennings, Amy Thumbi, Samuel Toye, Phillip de Clare Bronsvoort, Barend Mark |
author_facet | Lesosky, Maia Dumas, Sarah Conradie, Ilana Handel, Ian Graham Jennings, Amy Thumbi, Samuel Toye, Phillip de Clare Bronsvoort, Barend Mark |
author_sort | Lesosky, Maia |
collection | PubMed |
description | The accurate estimation of livestock weights is important for many aspects of livestock management including nutrition, production and appropriate dosing of pharmaceuticals. Subtherapeutic dosing has been shown to accelerate pathogen resistance which can have subsequent widespread impacts. There are a number of published models for the prediction of live weight from morphometric measurements of cattle, but many of these models use measurements difficult to gather and include complicated age, size and gender stratification. In this paper, we use data from the Infectious Diseases of East Africa calf cohort study and additional data collected at local markets in western Kenya to develop a simple model based on heart girth circumference to predict live weight of east African shorthorn zebu (SHZ) cattle. SHZ cattle are widespread throughout eastern and southern Africa and are economically important multipurpose animals. We demonstrate model accuracy by splitting the data into training and validation subsets and comparing fitted and predicted values. The final model is weight(0.262) = 0.95 + 0.022 × girth which has an R (2) value of 0.98 and 95 % prediction intervals that fall within the ±20 % body weight error band regarded as acceptable when dosing livestock. This model provides a highly reliable and accurate method for predicting weights of SHZ cattle using a single heart girth measurement which can be easily obtained with a tape measure in the field setting. |
format | Online Article Text |
id | pubmed-3552367 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Springer Netherlands |
record_format | MEDLINE/PubMed |
spelling | pubmed-35523672013-01-24 A live weight–heart girth relationship for accurate dosing of east African shorthorn zebu cattle Lesosky, Maia Dumas, Sarah Conradie, Ilana Handel, Ian Graham Jennings, Amy Thumbi, Samuel Toye, Phillip de Clare Bronsvoort, Barend Mark Trop Anim Health Prod Original Research The accurate estimation of livestock weights is important for many aspects of livestock management including nutrition, production and appropriate dosing of pharmaceuticals. Subtherapeutic dosing has been shown to accelerate pathogen resistance which can have subsequent widespread impacts. There are a number of published models for the prediction of live weight from morphometric measurements of cattle, but many of these models use measurements difficult to gather and include complicated age, size and gender stratification. In this paper, we use data from the Infectious Diseases of East Africa calf cohort study and additional data collected at local markets in western Kenya to develop a simple model based on heart girth circumference to predict live weight of east African shorthorn zebu (SHZ) cattle. SHZ cattle are widespread throughout eastern and southern Africa and are economically important multipurpose animals. We demonstrate model accuracy by splitting the data into training and validation subsets and comparing fitted and predicted values. The final model is weight(0.262) = 0.95 + 0.022 × girth which has an R (2) value of 0.98 and 95 % prediction intervals that fall within the ±20 % body weight error band regarded as acceptable when dosing livestock. This model provides a highly reliable and accurate method for predicting weights of SHZ cattle using a single heart girth measurement which can be easily obtained with a tape measure in the field setting. Springer Netherlands 2012-08-25 2012 /pmc/articles/PMC3552367/ /pubmed/22923040 http://dx.doi.org/10.1007/s11250-012-0220-3 Text en © The Author(s) 2012 https://creativecommons.org/licenses/by/4.0/ This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. |
spellingShingle | Original Research Lesosky, Maia Dumas, Sarah Conradie, Ilana Handel, Ian Graham Jennings, Amy Thumbi, Samuel Toye, Phillip de Clare Bronsvoort, Barend Mark A live weight–heart girth relationship for accurate dosing of east African shorthorn zebu cattle |
title | A live weight–heart girth relationship for accurate dosing of east African shorthorn zebu cattle |
title_full | A live weight–heart girth relationship for accurate dosing of east African shorthorn zebu cattle |
title_fullStr | A live weight–heart girth relationship for accurate dosing of east African shorthorn zebu cattle |
title_full_unstemmed | A live weight–heart girth relationship for accurate dosing of east African shorthorn zebu cattle |
title_short | A live weight–heart girth relationship for accurate dosing of east African shorthorn zebu cattle |
title_sort | live weight–heart girth relationship for accurate dosing of east african shorthorn zebu cattle |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3552367/ https://www.ncbi.nlm.nih.gov/pubmed/22923040 http://dx.doi.org/10.1007/s11250-012-0220-3 |
work_keys_str_mv | AT lesoskymaia aliveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT dumassarah aliveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT conradieilana aliveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT handeliangraham aliveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT jenningsamy aliveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT thumbisamuel aliveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT toyephillip aliveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT declarebronsvoortbarendmark aliveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT lesoskymaia liveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT dumassarah liveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT conradieilana liveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT handeliangraham liveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT jenningsamy liveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT thumbisamuel liveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT toyephillip liveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle AT declarebronsvoortbarendmark liveweightheartgirthrelationshipforaccuratedosingofeastafricanshorthornzebucattle |