Data/hora: 10/06/2024 13:52:31

Provedor de dados: | 96
País: | Brazil
Título: | Weight and age at puberty and their correlations with morphometric measurements in crossbred breed Suffolk ewe lambs
Autores: | Ferra,Janine de Campos; Cieslak,Silvia; Sartori Filho,Roberto; McManus,Connie; Martins,Carlos Frederico; Sereno,José Robson Bezerra.
Data: | 2010-01-01
Ano: | 2010
Palavras-chave: | Chest perimeter; Progesterone; Radioimmnunoassay; Sheep.
Resumo: | The objective of this study was to identify and to correlate parameters that characterize puberty and estimate the age and weight of Suffolk ewe lambs in Mato Grosso do Sul. This study was carried out with twenty-two Suffolk ewe lambs for 256 days. Blood samples were collected from the jugular vein and centrifugated and the plasma were stored at -20°C until analysis of progesterone (P4) concentration by radioimmunoassay (RIA). The morphometric measurements included: head length and width, body length, elbow height, chest perimeter, back-sternal diameter, croup length, width and height, cannon bone perimeter and shoulder and hip width, using a tape. The animals became pubertal when the plasma progesterone concentration was &gt;1.0 ng/mL, at 34.1 ± 5.2 kg and 39.5 ± 8.5 weeks of age. Meanwhile, the lambs that did not reach puberty (37.7 ± 11.4 weeks of age) were lighter. The morphometric measurements has medium to low correlations with age and weight at puberty.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000100018
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982010000100018
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.39 n.1 2010
Fonte: | info:eu-repo/semantics/openAccess