Data/hora: 11/06/2024 11:17:55

Provedor de dados: | 65
País: | Brazil
Título: | Development of a weight-estimation model to use in pregnant criollo-type mares
Autores: | Vieira,Patricia Soares; Nogueira,Carlos Eduardo Wayne; Santos,Alice Correa; Borba,Luciana de Araujo; Scalco,Rebeca; Brasil,Carolina Litchina; Barros,Willian Silva; Curcio,Bruna da Rosa.
Data: | 2018-01-01
Ano: | 2018
Palavras-chave: | Pregnant mares; Weight tape; Body weight estimation.
Resumo: | ABSTRACT: The aims of this study were: 1) to compare the tape weight and associated weight-estimation formula to evaluate weight gain in pregnant mares, and 2) to develop a mathematical model to estimate the weight of pregnant mares using body measurements. Thirty-four criollo-type mares were evaluated every two weeks during the middle and late pregnancy. The mares were weighed on a livestock scale, and we estimated body weight using tape weights and an associated body-weight estimation formula. Also, heart-girth circumference (heartgirth) and abdominal circumference were measured; the latter at the 12th intercostal space (12th ICS) and 18th rib (18th Rib), to use in a mathematical model to estimate the weight of pregnant mares. Observations were divided into three periods of pregnancy: 5th to 7 h month, 7th to 9 h month, and 9th to 11th month. Mares in late pregnancy showed an increase in actual weight and an increase in 12th ICS and 18th Rib measurements. Tape weight and body-weight estimation formula underestimated the weight of pregnant mares. However, the regression model using heart-girth circumference, 12th ICS, and 18th Rib measurements showed high correlation (r2 = 0.87, P&lt;0.001) with actual weight. Finally, the alternative methods usually used in horses are not accurate to estimate body weight in pregnant mares. In conclusion, the regression model Y=-540.143 + (heartgirth x 3.068) + (12th ICS x 1.278) + (18th Rib x 0.944) can be used to estimate body weight in pregnant mares from the 5th to 11th months of pregnancy.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000100701
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20160590
Formato: | text/html
Fonte: | Ciência Rural  v.48 n.1 2018
Fonte: | info:eu-repo/semantics/openAccess