Development and evaluations of equations to predict empty body weight in pre-weaned hair sheep lambs
ABSTRACT This research aimed to assess the relationships among shrunk body weight (SBW) and empty body weight (EBW) to develop equations to estimate EBW in 121 pre-weaned hair sheep lambs from different genotypes (Pelibuey, n=39; Katahdin, n=27 and crossbred Pelibuey × Black Belly, n=55), sex (non-c...
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Universidade Federal de Minas Gerais
2025-04-01
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| Series: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352025000300500&lng=en&tlng=en |
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| author | C. Jardines-Pozos R. Salazar-Cuytun J. Oliva-Hernández R.J. Leon R.A. Garcia-Herrera J.C. Escobar-España A.L.C. Gurgel J.C.S. Santana L.C.V. Ítavo T.P. Dias-Silva A.J. Chay-Canul |
| author_facet | C. Jardines-Pozos R. Salazar-Cuytun J. Oliva-Hernández R.J. Leon R.A. Garcia-Herrera J.C. Escobar-España A.L.C. Gurgel J.C.S. Santana L.C.V. Ítavo T.P. Dias-Silva A.J. Chay-Canul |
| author_sort | C. Jardines-Pozos |
| collection | DOAJ |
| description | ABSTRACT This research aimed to assess the relationships among shrunk body weight (SBW) and empty body weight (EBW) to develop equations to estimate EBW in 121 pre-weaned hair sheep lambs from different genotypes (Pelibuey, n=39; Katahdin, n=27 and crossbred Pelibuey × Black Belly, n=55), sex (non-castrated male, n=65 and female, n=56) and litter size (single, n=42 and double, n=79). Linear model with intercept, Linear model without intercept and exponential regression models were used for data analysis. The correlation coefficients among SBW and EBW was high (r = 0.89). The regression equations had high determination coefficients (r2) of 0.97. The final model fitted to estimate the EBW as a function of SBW was: EBW (kg) = 0.0065 (±0.14*) + 0.88 (±0.0124***) ×SBW, since it presented better fit values and was statistically significant (P<0.001). The equation developed and evaluated in the present study revealed that the linear relationship between SBW and EBW can be used to predict EBW in pre-weaned hair sheep lambs. |
| format | Article |
| id | doaj-art-d2079aee1dd24d718f883867dc36f4fc |
| institution | OA Journals |
| issn | 1678-4162 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Universidade Federal de Minas Gerais |
| record_format | Article |
| series | Arquivo Brasileiro de Medicina Veterinária e Zootecnia |
| spelling | doaj-art-d2079aee1dd24d718f883867dc36f4fc2025-08-20T02:14:38ZengUniversidade Federal de Minas GeraisArquivo Brasileiro de Medicina Veterinária e Zootecnia1678-41622025-04-0177310.1590/1678-4162-13173Development and evaluations of equations to predict empty body weight in pre-weaned hair sheep lambsC. Jardines-PozosR. Salazar-Cuytunhttps://orcid.org/0000-0001-7911-1325J. Oliva-Hernándezhttps://orcid.org/0000-0002-6907-6404R.J. Leonhttps://orcid.org/0000-0002-0987-9053R.A. Garcia-Herrerahttps://orcid.org/0000-0003-2456-4727J.C. Escobar-Españahttps://orcid.org/0000-0001-9590-646XA.L.C. Gurgelhttps://orcid.org/0000-0001-5911-369XJ.C.S. Santanahttps://orcid.org/0000-0003-2303-3377L.C.V. Ítavohttps://orcid.org/0000-0001-6895-8483T.P. Dias-Silvahttps://orcid.org/0000-0003-4633-376XA.J. Chay-Canulhttps://orcid.org/0000-0003-4412-4972ABSTRACT This research aimed to assess the relationships among shrunk body weight (SBW) and empty body weight (EBW) to develop equations to estimate EBW in 121 pre-weaned hair sheep lambs from different genotypes (Pelibuey, n=39; Katahdin, n=27 and crossbred Pelibuey × Black Belly, n=55), sex (non-castrated male, n=65 and female, n=56) and litter size (single, n=42 and double, n=79). Linear model with intercept, Linear model without intercept and exponential regression models were used for data analysis. The correlation coefficients among SBW and EBW was high (r = 0.89). The regression equations had high determination coefficients (r2) of 0.97. The final model fitted to estimate the EBW as a function of SBW was: EBW (kg) = 0.0065 (±0.14*) + 0.88 (±0.0124***) ×SBW, since it presented better fit values and was statistically significant (P<0.001). The equation developed and evaluated in the present study revealed that the linear relationship between SBW and EBW can be used to predict EBW in pre-weaned hair sheep lambs.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352025000300500&lng=en&tlng=enbody weight estimation hair sheepsheep requirementsmathematical modelsnutritional requirements |
| spellingShingle | C. Jardines-Pozos R. Salazar-Cuytun J. Oliva-Hernández R.J. Leon R.A. Garcia-Herrera J.C. Escobar-España A.L.C. Gurgel J.C.S. Santana L.C.V. Ítavo T.P. Dias-Silva A.J. Chay-Canul Development and evaluations of equations to predict empty body weight in pre-weaned hair sheep lambs Arquivo Brasileiro de Medicina Veterinária e Zootecnia body weight estimation hair sheep sheep requirements mathematical models nutritional requirements |
| title | Development and evaluations of equations to predict empty body weight in pre-weaned hair sheep lambs |
| title_full | Development and evaluations of equations to predict empty body weight in pre-weaned hair sheep lambs |
| title_fullStr | Development and evaluations of equations to predict empty body weight in pre-weaned hair sheep lambs |
| title_full_unstemmed | Development and evaluations of equations to predict empty body weight in pre-weaned hair sheep lambs |
| title_short | Development and evaluations of equations to predict empty body weight in pre-weaned hair sheep lambs |
| title_sort | development and evaluations of equations to predict empty body weight in pre weaned hair sheep lambs |
| topic | body weight estimation hair sheep sheep requirements mathematical models nutritional requirements |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352025000300500&lng=en&tlng=en |
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