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- Title
Tissue composition and allometric growth of carcass of lambs Santa Inês and crossbreed with breed Dorper.
- Authors
de Sousa, Marco Antonio Paula; Lima, Alyne Cristina Sodré; Araújo, Jonas Carneiro; Guimarães, Célia Maria Costa; Joele, Maria Regina Sarkis Peixoto; Borges, Iran; Daher, Luciara Celi Chaves; Silva, André Guimarães Maciel e
- Abstract
This study aimed to assess the tissue composition and allometric growth of carcasses of Santa Inês and crossbred Dorper x Santa Inês lambs confined for different periods at three body weight classes. Sixty-four lambs from Santa Inês (SI) and crossbred Dorper x Santa Inês (DSI) were slaughtered. The carcasses were refrigerated at 4 °C for 24 h, and half of the right side carcass was divided into five primary cuts, which were then dissected into bone, muscle, and fat. The corrected cold carcass weight (CCWc) was calculated based on the sum of the cuts. There was no effect of the interactions evaluated (P > 0.05) among the factors tested. CCWc, muscle (kg), fat (kg), bone (%), M:F, M:B, F:B, and M+F:B were influenced by the lambs' genetic group (P < 0.05). An effect of body weight at the beginning of confinement was found only for CCWc, muscle (kg), fat (kg), bone (kg), bone (%), and M:F. The crossbreeding of Santa Inês with breeds Dorper promotes improvements in the qualitative characteristics of the carcass. To obtain better relationships of the quantitative characteristics of the carcass, of sheep introduced in confinements with larger weights, the slaughter weight must be adjusted to that initial weight.
- Subjects
LAMBS; ERECTOR spinae muscles; CROSSBREEDING; TISSUES; BODY weight; BREEDING
- Publication
Tropical Animal Health & Production, 2019, Vol 51, Issue 7, p1903
- ISSN
0049-4747
- Publication type
Article
- DOI
10.1007/s11250-019-01886-2