| Autor: |
Felipe Amorim Caetano de Souza, Glaciane Lopes Teixeira, Tales Jesus Fernandes, Fabiana Rezende Muniz, Fabiana Oliveira Cunha, Sarah Laguna Conceição Meirelles, Joel Augusto Muniz, Raquel Silva de Moura |
| Jazyk: |
English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Revista Brasileira de Zootecnia, Vol 50 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1806-9290 |
| DOI: |
10.37496/rbz5020200047 |
| Popis: |
ABSTRACT The objective of this study was to evaluate the accuracy of the following six body weight (BW) estimation methods in Campolina (CAM) horses: A - weight tape placed at three different positions on the animal’s thorax; B - Crevat and Quetelet’s formula; C - Hall’s formula; D - Hintz and Griffiths’s table; E - Santos’s table; and F - Cintra’s formula. A total of 380 CAM horses were separated according to sex, age class, and gestational stage and evaluated. To determine their accuracy, weights measured on a scale and weight estimates of the six methods were compared by paired t-test, mean prediction error (MPE), and coefficient of determination (R2), using R software. The predictive capacity of method F was lower in the 6-12 months age class, so this formula is not indicated. The BW was overestimated compared with the actual weight by methods A (with weight tape placed in position 3) and B and underestimated by method C. Methods D and E accurately estimated BW of CAM horses. Correction factors are required to accurately estimate BW in this breed using methods B and C. Method A with the weight tape placed in position 2 is the most accurate for predicting BW, including pregnant female horses, and can, therefore, be considered the most suitable method for estimating BW of CAM horses. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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