Allometric growth of non-carcass components in crossed
               lambs

Garcia, Iraides Ferreira Furusho; Alvarenga, Tharcilla Isabella Rodrigues Costa; Perez, Juan Ramon Olalquiaga; Almeida, Amelia Katiane de; Gallo, Sarita Bonagurio; Pereira, Idalmo Garcia; Alves, Nadja Gomes; Alvarenga, Flávio Augusto Pereira

doi:10.1590/0103-8478cr20130489

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Animal Production • Cienc. Rural 44 (7) • July 2014 • https://doi.org/10.1590/0103-8478cr20130489 copy

Allometric growth of non-carcass components in crossed lambs

Crescimento alométrico dos não componentes da carcaça de cordeiros cruzados

Authorship SCIMAGO INSTITUTIONS RANKINGS

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.

allometry; growth; crossbreed; body development; sheep

Component	--------------------------------------------------------Genetic Group---------------------------------------------------------
	SS	TS	FS	BS
Feet/ankles	0.7781**	0.6283**	0.6715**	0.7660**
Head	0.7619**	0.662**	0.6067**	0.7689**
Skin	1.1407^ns	0.9809^ns	1.1769^ns	1.1722^ns
Tail	1.2691^ns	1.2370^ns	1.1950^ns	1.1648^ns
Diaphragm	0.9941^ns	1.0000^ns	1.0000^ns	0.4302^ns
Lung	0.4906**	0.4784**	0.6786*	0.8132^ns
Trachea/esophagus	0.7176*	0.7269*	1.3225^ns	1.0815^ns
Heart	0.9899^ns	1.0926^ns	0.8094^ns	1.0572^ns
Pancreas	0.4722*	0.5249**	0.6547*	0.5391**
Spleen	0.8646^ns	1.1199^ns	0.7492^ns	1.0576^ns
Kidneys	0.7061^ns	0.6187**	0.5659**	1.0471^ns
Bladder	0.4717*	0.6102^ns	0.8665^ns	1.3586^ns
Liver	0.7385**	0.8984*	0.7530^ns	0.7691*
Rumen/reticulum	0.6802**	0.8256**	0.6684**	0.5128**
Omasum	0.7881^ns	0.7894^ns	0.7115^ns	0.7143^ns
Abomasum	0.6885*	0.6048*	0.8274^ns	0.6860*
Small intestine	0.7858^ns	0.7156*	0.5247^ns	0.5840^ns
Large intestine	0.4772**	0.5624**	0.5729*	0.5849**
Omental fat	0.3797^ns	0.3890^ns	1.0441^ns	0.6126^ns
Mesentery and fat	2.0516*	1.6081**	1.2561^ns	1.6446**
Pelvic fat	1.6093**	1.9625**	1.6498*	1.9927**
Kidney fat	2.0516*	2.3114**	2.2698**	2.7463**
Testicles	2.5319**	2.3247**	2.2581**	2.4772**

Component	------------------------------------------------------Genetic Group------------------------------------------------------
	SS	TS	FS	BS
Feet/ankles	0.6882^ns	0.6700^ns	0.5684**	0.6179**
Head	0.6972**	0.7022**	0.6715**	0.6507^ns
Skin	0.9594^ns	0.9345^ns	0.8759^ns	1.0136*
Tail	1.5238**	1.2538^ns	1.4186**	1.3303*
Diaphragm	0.8328*	0.9088^ns	0.9381^ns	1.0022^ns
Lung	0.4128**	0.5434**	0.4632*	0.4069**
Trachea/esophagus	0.6303^ns	1.2101^ns	0.7052^ns	0.8075^ns
Heart	0.7216^ns	0.7097^ns	0.6510*	0.8468*
Pancreas	0.7237*	0.6079^ns	0.4616^ns	0.5282**
Spleen	1.1831^ns	0.9144^ns	0.8798*	0.8701^ns
Kidneys	0.4903**	0.5559**	0.5340**	0.4769**
Bladder	0.7931^ns	1.8428^ns	0.3473^ns	1.2949^ns
Liver	0.5735**	1.0273^ns	0.6563**	0.5391**
Rumen/reticulum	0.3980**	0.7076*	0.5251**	0.5777**
Omasum	0.6633**	0.8646^ns	0.7999^ns	0.6425**
Abomasum	0.6836*	0.6153**	0.7830^ns	0.5991**
Small intestine	0.7472**	0.7119**	0.5701**	0.5567**
Large intestine	0.4187**	0.4795**	0.4579**	0.5243**
Omental fat	0.8879^ns	0.7563^ns	0.7575^ns	0.7955^ns
Mesentery and fat	1.7841^ns	1.6381^ns	1.6484^ns	1.8172^ns
Pelvic fat	2.0591**	2.2390**	1.2451^ns	1.9443**
Kidney fat	2.6156^ns	3.4010^ns	2.8076**	2.6601^ns
Mammary Gland	1.6571^ns	2.0012**	1.2493^ns	1.3370^ns

Universidade Federal de Santa Maria Universidade Federal de Santa Maria, Centro de Ciências Rurais , 97105-900 Santa Maria RS Brazil , Tel.: +55 55 3220-8698 , Fax: +55 55 3220-8695 - Santa Maria - RS - Brazil
E-mail: cienciarural@mail.ufsm.br

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