Allometric growth of non-carcass components in crossed lambs

• Main Authors: Iraides Ferreira Furusho Garcia, Tharcilla Isabella Rodrigues Costa Alvarenga, Juan Ramon Olalquiaga Perez, Amelia Katiane de Almeida, Sarita Bonagurio Gallo, Idalmo Garcia Pereira, Nadja Gomes Alves, Flávio Augusto Pereira Alvarenga
• Format: Article
• Language: English
• Published: Universidade Federal de Santa Maria 2014-07-01
• Series: Ciência Rural
• Subjects: alometria; crescimento; desenvolvimento corporal; cruzamento; ovinos
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000701229&lng=en&tlng=en
• ISSN: 1678-4596

Males and females, including purebred Santa Inês lamb (SI) and crosses between Santa Inês dams and Texel (TxSI), Ile de France (IFxSI) and Bergamasca (BxSI) sires were feedlot finished and slaughtered at 15, 25, 35 and 45kg live weight. After slaughter, the following non- carcass components were weighed and calculated the allometric growth. Lungs of BxSI males grew faster than those of SI and TxSI. Trachea/esophagus in SI and TxSI males grew slower than IFxSI and BxSI. Kidneys BxSI males grew faster than TxSI and IFxSI. Livers of female TxSI lamb grew more rapidly than those of females in the other genetic groups. In both males and females, the rumen/reticulum grew faster in the TxSI group than SI and BxSI groups.