Prediction of live weight based on body measurements in crossbred animals Holstein/Gir
DOI:
https://doi.org/10.36560/17320241929Keywords:
Association of variables, dairy cattle, body weight estimationAbstract
The use of zootechnical indices in the production environment is essential to work assertively, with live weight being a crucial factor in monitoring the development and decision-making with animals.The present study aims to use morphometric measurements to predict the weight of heifers ½H and ¾H. A total of 299 heifers ¾ H and 32 heifers 1/2H were weighted (kg) in scale, measured (cm) with a tape to obtain the chest girth (CG) and forearm perimeter (FP), using a hypometer to measure wither height (WH), rump height (RH), and body length (BL). The procedures used were “proc means”, “proc cor” and “proc reg” parts of the Statistical Analysis System (SAS) to obtain the means, correlations between weight, measures, and the regressions equations, respectively. The equations “ Body Weight = 61,49 + 0,000056 * CG^3” and “ Body Weight = 52,82 + 0,000061 * CG^3” allowed a greater accuracy when estimating the weight of heifers ½ H and ¾H, respectively. Some equations presented slightly superior coefficients of determination, however, they needed a higher number of measures than the two equations previously mentioned. The selected equations presented, respectively R2 equals 0,83 and 0,93, requiring only one measure (CG) to estimate the animal's weight.
References
WOOD, S. et al. Comparison of visual assessment and heart girth tape measurement for estimating the weight of cattle in clinical practice. The Veterinary Journal, v. 203 issue 3, 2015. https://doi.org/10.1016/j.tvjl.2014.12.034
MAHECHA, L. et al. Estudio bovinométrico y relaciones entre medidas corporales y el peso vivo en la raza Lucerna. Revista Colombiana de Ciência Pecuária, v.15, n.1, p.80-87, 2002. https://doi.org/10.17533/udea.rccp.323791
MILNER J; HEWITT D. Weight of horses: improved estimates based on girth and length. Can Vet J. 1969 Dec;10(12):314-6. PMID: 5392700; PMCID: PMC1697704.
VEIGA, J. B. da; CARVALHO, LOD de M.; TEIXEIRA NETO, J. F. Mineralização de bovinos e bubalinos. 1989. http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381220
FRANCO, M de O. et al. Evaluation of Body Weight Prediction Equations in Growing Heifers. Acta Scientiarum. Animal Sciences, vol. 39, no. 2,, p. 201, 2017. https://doi.org/10.4025/actascianimsci.v39i2.33118
GRUBER, L. et al. Body weight prediction using body size measurements in Fleckvieh, Holstein, and Brown Swiss dairy cows in lactation and dry periods, Arch. Anim. Breed., 61, 413–424, https://doi.org/10.5194/aab-61-413-2018, 2018.
HEINRICHS, A.J. et al. Predicting body weight and wither height in Holstein heifers using body measurements. Journal of Dairy Science, v.75, p.3576-3581, 1992. https://doi.org/10.3168/jds.S0022-0302(92)78134-X
REIS, G. L. et al. Predição do peso vivo a partir de medidas corporais em animais mestiços Holandês/Gir. Ciência Rural [online]. 2008, v. 38, n. 3,.Epub 04 Abr 2008. ISSN 1678-4596. https://doi.org/10.1590/S0103-84782008000300029
RESENDE, M. A. et. al. Fita de pesagem do IFTM para animais da raça girolando. Scientific Electronic Archives Issue ID: Sci. Elec. Arch. Vol. 16 (4), April 2023. https://doi.org/10.36560/16420231700
LEITE, A. C. S. P. et al. Avaliação do peso corporal a partir de medidas corporais em vacas. In: XXVII Semana de Zootecnia da UFRPE - Universidade Federal Rural de Pernambuco - 52171-900, Rua Manuel de Medeiros, s/n , Dois Irmãos , Recife, Pernambuco, 2019.
MIELKE, L. et al. Predição de peso corporal de terneiras em aleitamento através da fita torácica e sua interação racial. Revista Congrega Urcamp, Bagé, v. 5, n. 5, nov. 2011. 1 CD-ROM.
WEBER, V. A. de M et al. Prediction of Girolando cattle weight by means of body measurements extracted from images. Revista Brasileira de Zootecnia, v. 49, 2020. https://doi.org/10.37496/rbz4920190110
LITTELL, R.C.; STROUP, W. W. AND FREUND, R. SAS system for linear models. Fourth Edition, SAS Institute, Cary, North Carolina, 2002.
Published
How to Cite
Issue
Section
License
Copyright (c) 2024 Scientific Electronic Archives
This work is licensed under a Creative Commons Attribution 4.0 International License.
The journal reserves the right to make changes to the original rules, spelling and grammatical order, in order to keep the language of worship default, respecting, however, the style of the authors. The finals will be sent to authors. Articles published are the property of Scientific Electronic Archives magazine, becoming its total or partial reprint, subject to the express authorization of the direction of the journal. The original source of publication should be retained. The originals will not be returned to the authors. Opinions expressed by authors of articles are solely your responsibility.
This journal uses the License Creative Commons Atribuição 4.0 Internacional.
1.png)
