Meat composition in genetically selected a control cattle from a serial slaughter experiment

Morris, C. A.; Kirton, A. H.; Hogg, B. W.; Brown, J M E; Mortimer, B.

doi:10.1016/0309-1740(94)e0009-u

Cited by 17 publications

(9 citation statements)

References 11 publications

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“…The BF muscle of wethers had 17% more fat than ram lambs (P B0.05), and also, animals implanted showed 24% more fat than those not implanted (P B0.05). These results were in accordance with those reported by Morris et al (1995) who stated that as a result of sexual earlier maturity, with the same chronological age, wethers presented higher fat content than the intact lambs. In addition, values found in this study are consistent with several studies performed in confined sheep which reported that meat from intact animals or implanted is leaner than in wethers (Solomon et al 1990;Wood et al 2008).…”

Section: Resultssupporting

confidence: 83%

Effects of castration and zeranol on fatty acid composition and cholesterol content of hair lamb meat

Villalobos-Villalobos

González‐Ríos

Núñez-González

et al. 2013

Journal of Applied Animal Research

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Hair lambs (n 072, crosses of Blackbelly, Dorper, and Katahdin breeds) with an average age of 90 days (21.49 2.3 kg of BW) were used to investigate the effects of sex class (CLASS: ram vs. wether) and zeranol implant (IMP: control vs. 12 mg) on fat and cholesterol content, and fatty acids (FAs) composition of intramuscular longissimus dorsi (LD) and biceps femoris (BF) and subcutaneous fat (SBC) depots of the loin area. Animals were assigned to one of four treatments with a factorial arrangement (n 018): (1) rams (R), (2) rams implanted with 12 mg zeranol (IR), (3) wether lambs (W), and (4) wether lambs implanted with 12 mg zeranol (IW). FAs C12:0 and C15:0 FAs were significantly higher in the wether's LD. The amount of C22:1 n-9 and C24:1 in rams' LD was higher than those of wethers. Wethers had a higher content of C18:1 cis 9 than R group, and the content of this cis isomer was significantly lower in the implanted group. LD of rams contained a higher amount of polyunsaturated fatty acid (PUFA) and a higher PUFA/saturated fatty acid ratio. Cholesterol content in the three tissues (LD, BF, and SBC) was affected significantly by the CLASS)IMP interaction and was higher in wethers without implant. The sex class was the most important factor affecting lipid composition in hair lambs. The higher PUFA content in meat from rams may suggest a nutritional advantage in comparison to meat from wethers.

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Section: Resultssupporting

confidence: 83%

Effects of castration and zeranol on fatty acid composition and cholesterol content of hair lamb meat

Villalobos-Villalobos

González‐Ríos

Núñez-González

et al. 2013

Journal of Applied Animal Research

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“…Os valores de proteína variaram de 18,19 a 18,62% e o de cinzas, de 0,96 a 0,98% ,independentemente do sexo e do sistema de terminação (Tabela 3). Esses valores estão de acordo com as citações de Pérez et al (2002), que observaram valores de 18,1 a 18,4% de proteína na carne de cordeiros Suffolk, enquanto Morris et al (1995) e Solomon et al (1980) registraram valores de 0,77 a 1,16% para cinzas em carne ovina. No entanto, Monteiro et al (2001), em pesquisa com cordeiros Texel × Corriedale criados em regime de pasto, encontraram 22% de proteína no músculo longissimus dorsi, enquanto Klein Junior et al (2006) registraram valores de 20,38 a 20,72% de proteína na carne de cordeiros mestiços com predominância da raça Ideal.…”

Section: Resultsunclassified

Influência do sexo e do sistema de terminação de cordeiros Texel × Corriedale na qualidade da carcaça e da carne

Bonacina¹,

Osório²,

Osório³

et al. 2011

R. Bras. Zootec.

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RESUMO -Neste trabalho o objetivo foi avaliar o efeito do sexo e do sistema de terminação de cordeiros Texel × Corriedale sobre as características subjetivas da carcaça e as medidas instrumentais e químicas da carne. Foram utilizados 90 animais, 45 deles cordeiros machos não-castrados e 45 fêmeas, mantidos em pastagem com a mãe até o desmame (70 dias); e terminados em três sistemas de produção: apenas pastagem; mantidos na pastagem com a mãe e pastagem com suplementação (casca de soja em nível correspondente a 1% do peso vivo dos cordeiros). Após o abate dos animais, as carcaças foram armazenadas em câmara fria (1ºC, 24 horas) para medidas de pH, marmoreio, estado de engorduramento, cor e textura.Na sequência, foi retirado o músculo longissimus dorsi da meia-carcaça, para a análise instrumental e química. A análise de variância e o teste de Tukey foram utilizados para comparação da média a 5% de significância. Não ocorreu interação de sexo e sistema de terminação dos animais nas características avaliadas na carcaça. Igualmente, não ocorreu interação entre sexo e sistema de terminação, porém os fatores isolados tiveram efeito significativo na força de cisalhamento e nos teores de umidade e gordura. A carne dos machos e dos animais terminados mantidos com a mãe apresentam maior resistência à força de cisalhamento ABSTRACT -In this work we aimed to evaluate the effect of sex and finishing systems on individual characteristics of carcass, instrumental and chemical meat measurements of Texel × Corriedalle lambs. Ninety animals were used; 45 noncastrated rams and 45 females. Lambs were kept on pasture with mother to weaning (70 days) and assigned to one of three production systems: pasture, pasture with mother, and on pasture receiving a soy peel supplement at 1% of live weight basis.After slaughtering, carcasses were stored under vacuum in a freezer at 1 ºC for pH, marbling, fat condition, color and texture measurements. The longissimus dorsi muscle was separated from the half carcass to proceed instrumental and chemical analysis. Analysis of variance and Tukey test were used for comparison of the mean at 5% significance. There was no interaction for sex and finishing system on carcass characteristics. Similarly, there was no interaction between sex and termination system as related to instrumental measurements and meat chemical composition. Conversely, the isolated factors affected significantly the shearing force, moisture and fat content. Rams meat and the meat of the lambs kept on pasture with mother presented better resistance to shearing force and moisture, but less fat content.

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“…Tenderness Evaluation. The muscle samples were prepared for evaluation as described by Morris et al (1995) and subjected to Warner-Bratzler shear force determination as described by Taylor and Cornell (1985).…”

Section: Methodsmentioning

confidence: 99%

The effects of long-term administration of recombinant bovine somatotropin (Posilac) and Synovex on performance, plasma hormone and amino acid concentration, and muscle and subcutaneous fat fatty acid composition in Holstein-Friesian bull calves.

Holzer

Aharoni

Brosh

et al. 1999

Journal of Animal Science

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The effect of recombinant somatotropin (rbST), Synovex (Syn), and their combination (rbST+Syn) on intact male calves was examined in an experiment that lasted an average of 238 d. Holstein-Friesian bull calves were allotted to one of four subtreatments (n = 14/treatment) in a factorial arrangement. There were two levels of rbST (0; rbST) and two levels of the estrogenic growth promoter Synovex (0; Syn). The rbST was administered once every 2 wk as injections of 500 mg of Posilac. Synovex (C and S) was implanted at 90-d intervals. The animals were fed for ad libitum consumption a diet with a metabolizable energy concentration of 11.7 MJ/kg DM and 15% crude protein. The hot carcasses were weighed after the removal of kidney, pelvic, and cod fats, which were weighed separately. The 12th rib cut was saved for analysis. Average daily gain and feed conversion efficiency were increased by rbST treatment by 9% (P < .005) and 10% (P < .016), respectively. There was no significant effect of Syn treatment, nor was there a rbST x Syn interaction. The proportion of the fat of the large depots in the carcass was reduced by 34% (P < .0001) and in the longissimus muscle by 32% (P < .16) owing to the rbST treatment. The plasma concentrations of GH, insulin, and thyroxin were increased by rbST treatment (P < .001, P < .01, and P < .03, respectively). The concentration of IGF-I was not affected. Synovex had no effect on plasma hormone concentration. Plasma essential and nonessential amino acid concentrations were reduced by 14 and 9%, respectively, when rbST was injected. Concentrations of cholesterol and fatty acids in muscle and subcutaneous fat were not affected (P > .072) by the rbST treatment. Synovex increased the monounsaturated fatty acids (MUFA), and the combinaton of Syn with rbST reduced polyunsaturated fatty acid (PUFA) concentration in the longissimus muscle (at the 12th rib). The reduced muscle fat content of the rbST-treated animals was associated with a trend toward an increase in polyunsaturated fatty acids.

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Meat composition in genetically selected a control cattle from a serial slaughter experiment

Cited by 17 publications

References 11 publications

Effects of castration and zeranol on fatty acid composition and cholesterol content of hair lamb meat

Effects of castration and zeranol on fatty acid composition and cholesterol content of hair lamb meat

Influência do sexo e do sistema de terminação de cordeiros Texel × Corriedale na qualidade da carcaça e da carne

The effects of long-term administration of recombinant bovine somatotropin (Posilac) and Synovex on performance, plasma hormone and amino acid concentration, and muscle and subcutaneous fat fatty acid composition in Holstein-Friesian bull calves.

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