# Comparison of mathematical models to estimate live weight through heart girth in growing Pelibuey sheep

## Authors

• Jorge-Rodolfo Canul-Solís Tecnológico Nacional de México/ Instituto Tecnológico de Tizimín
• Ricardo-A . García-Herrera Universidad Juárez Autónoma de Tabasco
• Epigmenio Castillo-Gallegos Universidad Nacional Autónoma de México
• Luis-Enrique Castillo-Sanchez Tecnológico Nacional de México/ Instituto Tecnológico de Tizimín
• Enrique Camacho-Perez Tecnológico Nacional de México/Instituto Tecnológico de Progreso
• Antonio-Leandro Chaves-Gurgel Instituto Federal de Educação, Ciência e Tecnologia do Sudeste de Minas Gerais
• Carolina Marques-Costa Universidade Federal de Mato Grosso do Sul
• Patrick Bezerra-Fernandes Universidade Federal de Mato Grosso do Sul
• Alfonso-Juventino Chay-Canul Universidad Juárez Autónoma de Tabasco

## Keywords:

animal growth, biometric measurements, body weight, heart girth, lambs, Pelibuey, predictive equations, sheep, weight prediction, prediction models

## Abstract

Background: Assessment of animal growth based on live weight (LW) in traditional sheep production systems is limited by the high cost of purchase and maintenance of livestock scales. Objective: To develop and evaluate equations for LW prediction using heart girth (HG) in growing Pelibuey sheep. Methods: A dataset (n=415) of clinically healthy male Pelibuey sheep from two months to one year of age, with an average LW of 25.96 ± 10.25 kg and HG of 68.31 ± 10.53 cm, were used. Three equations were evaluated: LW (kg) = −37.70 + 0.93 × HG (Eq. 1); LW (kg) = −1.74 + 0.19 × HG + 0.008 × HG2 (Eq. 2); and LW (kg) = 0.003 × HG2.68 (Eq. 3). Results: The correlation coefficient between LW and HG was r = 0.94 (p<0.001). The three equations showed a high concordance correlation coefficient (CCCs≥0.97). However, the random error was the main component of the mean square partition of the prediction error (≥82.78%) only for Eqs. 1 and 2. The test for parameter identity (intercept=0; slope=1) was accepted only for Eq. 2 (p>0.05). On the other hand, for Eqs. 1 and 3 the intercept was different from zero and the slope was different from one (p<0.05). Conclusion: The second-degree equation accurately and precisely estimated body weight of growing Pelibuey sheep using the HG as a sole predictor variable.

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## Author Biographies

### Jorge-Rodolfo Canul-Solís, Tecnológico Nacional de México/ Instituto Tecnológico de Tizimín

Tecnológico Nacional de México/ Instituto Tecnológico de Tizimín, Tizimín, Yucatán, México.
https://orcid.org/0000-0001-9934-4302

https://orcid.org/0000-0001-7253-3752

### Ricardo-A . García-Herrera, Universidad Juárez Autónoma de Tabasco

División Académica de Ciencias Agropecuarias. Universidad Juárez Autónoma de Tabasco: Villahermosa, Tabasco, México.
https://orcid.org/0000-0003-2456-4727

### Epigmenio Castillo-Gallegos, Universidad Nacional Autónoma de México

Universidad Nacional Autónoma de México, Facultad de Medicina Veterinaria y Zootecnia, Centro de Enseñanza, Investigación y Extensión en Ganadería Tropical.
https://orcid.org/0000-0002-2850-9795

### Luis-Enrique Castillo-Sanchez, Tecnológico Nacional de México/ Instituto Tecnológico de Tizimín

Tecnológico Nacional de México/ Instituto Tecnológico de Tizimín, Tizimín, Yucatán, México.
https://orcid.org/0000-0002-9848-0801

### Enrique Camacho-Perez, Tecnológico Nacional de México/Instituto Tecnológico de Progreso

Tecnológico Nacional de México/Instituto Tecnológico de Progreso, Progreso, Yucatán, México
https://orcid.org/0000-0002-2581-1921

### Antonio-Leandro Chaves-Gurgel, Instituto Federal de Educação, Ciência e Tecnologia do Sudeste de Minas Gerais

Instituto Federal de Educação, Ciência e Tecnologia do Sudeste de Minas Gerais, Rio Pomba, Minas Gerais, Brasil
https://orcid.org/0000-0001-5911-369X

### Carolina Marques-Costa, Universidade Federal de Mato Grosso do Sul

Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brasil
https://orcid.org/0000-0002-0312-6755

### Patrick Bezerra-Fernandes, Universidade Federal de Mato Grosso do Sul

Universidade Federal de Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brasil
https://orcid.org/0000-0003-2368-943X

### Alfonso-Juventino Chay-Canul, Universidad Juárez Autónoma de Tabasco

División Académica de Ciencias Agropecuarias. Universidad Juárez Autónoma de Tabasco: Villahermosa, Tabasco, México.
https://orcid.org/0000-0003-4412-4972

## References

Afolayan RA, Adeyinka IA, Lakpini CAM. The estimation of live weight from body measurements in Yankasa sheep. Czech J Anim Sci 2006; 51(8): 343–348. https://doi.org/10.17221/3948-CJAS

Alexandre G, Rodriguez L, Arece J, Delgadillo J, García GW, Habermeier K, Almeida AM, Fanchone A, Gourdine JL, Archiméde H. Agroecological practices to support tropical livestock farming systems: a Caribbean and Latin American perspective. Trop Anim Health Prod 2021; 53(1): e111. https://doi.org/10.1007/s11250-020-02537-7.

Bautista-Díaz E, Mezo-Solis JA, Herrera-Camacho J, Cruz-Hernández A, Gomez-Vazquez A, Tedeschi LO, Lee-Rangel HA, Bello-Pérez EV, Chay-Canul AJ. Prediction of carcass traits of hair sheep lambs using body measurements. Animals 2020; 10(8): e1276. https://doi.org/10.3390/ani10081276

Bautista-Díaz E, Salazar-Cuytun ER, Chay-Canul AJ, García-Herrera RA, Piñeiro-Vázquez AT, Magaña-Monforte JG, Tedeschi LO, Cruz-Hernández A, Gómez-Vázquez, A. Determination of carcass traits in Pelibuey ewes using biometric measurements. Small Rumin Res 2017; 147(2): 115–119. https://doi.org/10.1016/j.smallrumres.2016.12.037.

Canul-Solis J, Angeles-Hernandez JC, García-Herrera RA, Razo-Rodríguez D, Lee-Rangle HA, Piñeiro-Vazquez AT, Casanova-Lugo F, Rosales-Nieto CA, Chay-Canul AJ. Estimation of body weight in hair ewes using an indirect measurement method. Trop Anim Health Prod 2020; 52(3): 2341–2347. https://doi.org/10.1007/s11250-020-02232-7.

Chay-Canul AJ, García-Herrera RA, Salazar-Cuytún R, Ojeda-Robertos NF, Cruz-Hernández A, Fonseca MA, Canul-Solís JR. Development and evaluation of equations to predict body weight of Pelibuey ewes using heart girth. Rev Mex Cienc Pecu 2019a; 10(3): 767–777. https://doi.org/10.22319/rmcp.v10i3.4911

Chay-Canul AJ, Aguilar-Urquizo E, Parra-Bracamonte GM, Piñeiro-Vazquez ÁT, Sanginés-García JR, Magaña-Monforte JG, García-Herrera RA, López-Villalobos N. Ewe and lamb pre-weaning performance of Pelibuey and Katahdin hair sheep breeds under humid tropical conditions. Ital J Anim Sci 2019b; 18(5): 850–857. https://doi.org//10.1080/1828051X.2019.1599305

Chay-Canul AJ, Magaña-Monforte JG, Chizzotti ML, Piñeiro-Vázquez ÁT, Canul-Solís JR, Ayala-Burgos AJ, Ku-Vera JC, Tedeschi LO. Energy requirements of hair sheep in the tropical regions of Latin America. Review. Rev Mex Cienc Pecu 2016; 7(1): 105–125.

Conrado VDC, Arandas JKG, Ribeiro MN. Modelos de regressão para predição do peso da raça Canindé através de medidas morfométricas. Arch de Zootec 2015; 64(1): 277–280. https://doi.org/10.21071/az.v64i247.400.

Franco MO, Marcondes MI, Souza-Campos JM, Freitas DR, Detmann E, Valadares-Filho SC. Evaluation of body weight prediction Equations in growing heifers. Acta Sci Anim Sci 2017; 39(2): 201–206. https://doi.org/10.4025/actascianimsci.v39i2.33118

Gurgel ALC, Difante GS, Emerenciano Neto JV, Araújo CGF, Costa MG, Ítavo LCV, Araujo IMM, Costa CM, Santana JCS, Ítavo CCBF, Fernandes PB. Prediction of carcass traits of Santa Inês lambs finished in tropical pastures through biometric measurements. Animals 2021; 11(8): 2329. https://doi.org/10.3390/ani11082329

Heinrichs AJ, Heinrichs BS, Jones CM, Erickson PS, Kalscheur KF, Nennich TD, Heins BJ, Cardoso FC. Short communication: Verifying Holstein heifer heart girth to body weight prediction equations. J Dairy Sci 2017; 100(10): 8451–8454. https://doi.org/10.3168/jds.2016-12496

Kandoussi A, Petit D, Boujenane I. Morphologic characterization of the Blanche de Montagne, an endemic sheep of the Atlas Mountains. Trop Anim Health Prod 2021; 53(1): e154. https://doi.org/10.1007/s11250-021-02577-7

Kumar S, Dahiya SP, Malik ZS, Patil CS. Prediction of body weight from linear body measurements in sheep. Indian J Anim Res 2018; 52(1): 1263–1266. https://doi.org/10.18805/ijar.B-3360

Mahmud MA, Shaba P, Abdulsalam W, Yisa HY, Gana J, Ndagi S, Ndagimba R. Live body weight estimation using cannon bone length and other body linear measurements in Nigerian breeds of sheep. J Adv Vet Anim Res 2014; 1(4): 169–176. https://doi.org/10.5455/javar.2014.a29

Málkovám A, Ptáček M, Chay-Canul A, Stádník L. Statistical models for estimating lamb birth weight using body measurements. Ital J Anim Sci 2021; 20(1): 1063–1068. https://doi.org/10.1080/1828051X.2021.1937720

Mavule BS, Muchenje V, Bezuidenhout CC, Kunene NW. Morphological structure of Zulu sheep based on principal component analysis of body measurements. Small Rumin Res 2013; 111(1–3): 23–30. https://doi.org/10.1016/j.smallrumres.2012.09.008

Oliveira AS, Abreu DC, Fonseca MA, Antoniassi PMB. Short communication: Development and evaluation of predictive models of body weight for crossbred Holstein-Zebu dairy heifers. J Dairy Sci 2013; 96(10): 6697–6702. https://doi.org/10.3168/jds.2013–6988

Sabbioni A, Beretti V, Superchi P. Ablondi M. Body weight estimation from body measures in Cornigliese sheep breed. Ital J Anim Sci 2019; 19(1): 25–30. https://doi.org/10.1080/1828051X.2019.1689189

Salazar-Cuytun R, Garcia-Herrera RA, Munoz-Benitez AL, Ptacek M, Portillo-Salgado R, Bello-Perez EV, Chay-Canul AJ. Relationship between body volume and body weight in Pelibuey ewes. Trop Subtrop Agroecosystems 2021; 24(3): e125.

Sert NP, Hurst V, Ahluwalia A, Alam S, Avey MT, Baker M, Browne WJ, ClarkA, Cuthill IC, Dirnagl U, Emerson M, Garner P, Holgate SH, Howells DW, KarpI NA, Lazic SE, Lidster K, MacCallum CJ, MacleodI M, Pearl EJ, Petersen OH, Rawle F, Reynolds P, Rooney K, Sena ES, Silberberg SD, Steckler T, Wurbel H. The ARRIVE guidelines 2.0: Updated guidelines for reporting animal research. PLoS Biol 2020; 18(1): e3000410. https://doi.org/10.1371/journal. pbio.30004100

Tedeschi LO. Assessment of the adequacy of mathematical models. Agric Syst 2006; 89(2–3): 225–247. https://doi.org/10.1016/j.agsy.2005.11.004

Villiers JF, Gcumisa ST, Gumede SA, Thusi SP, Dugmore TJ, Cole M, Toit JF, Vatta AF, Stevens C. Estimation of live body weight from the heart girth measurement in KwaZulu-Natal goats. Appl Anim Husb Rural Dev 2009; 2(1): 1–8.

Yilmaz O, Cemal I, Karaca O. Estimation of mature live weight using some body measurements in Karya sheep. Trop Anim Health Prod 2013; 45(2): 397–403. https://doi.org/10.1007/s11250-012-0229-7

2022-07-28

## How to Cite

Canul-Solís, J.-R., Portillo-Salgado, R., . García-Herrera, R.-A., Castillo-Gallegos, E., Castillo-Sanchez, L.-E., Camacho-Perez, E., Chaves-Gurgel, A.-L., Marques-Costa, C., Bezerra-Fernandes, P., & Chay-Canul, A.-J. (2022). Comparison of mathematical models to estimate live weight through heart girth in growing Pelibuey sheep. Revista Colombiana De Ciencias Pecuarias, 36(2), 89–97. https://doi.org/10.17533/udea.rccp.v36n2a4

## Section

Original research articles