Growth performance and carcass traits of purebred and crossbred fattening lambs from Ghezel ram with Grey Shirazi ewe

Karimi, Abdolhamid; Abarghuei, Mohammad Javad; Boostani, Alidad

doi:10.1007/s11250-021-03017-2

Cited by 3 publications

(5 citation statements)

References 34 publications

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“…Rams had a lower dry matter percentage than ewes, possibly due to the lower percentage of fat in ram carcasses. This concurs with results of Cloete et al (2004b), Kemp et al (1976), andKarimi et al (2022), who found that ewes had lower moisture percentages than rams or wethers. The findings of Cloete et al (2004b) for protein and ash content also concurred with that of this study, namely that no statistical differences existed between sexes.…”

Section: Discussionsupporting

confidence: 92%

“…Therefore, crossbred slaughter lambs appear to be more profitable from a meat-producing perspective than their purebred contemporaries as they can be sold off in a shorter time, and at similar live weights, produce a higher percentage of saleable carcass meat. Although this study did not find any statistical differences between genotypes for slaughter weight, literature points to such differences existing (Scales et al, 2000;Kiyanzad, 2002;Cloete et al, 2006;Kader Esen et al, 2020;Karimi et al, 2022). The superiority of crossbred lambs for these traits is likely attributable to heterosis and the levels of dimorphism between the sire and dam breeds.…”

Section: Discussioncontrasting

confidence: 58%

“…Given that ewes had a substantially higher percentage of fat in the carcass as determined from the three-rib cut, it was expected that they would also have a substantially higher percentage of total lipids in the proximate analysis, as was found by Cloete et al (2004b). However, although their total lipid values were higher in absolute terms, the difference was not statistically significant, similar to Kemp et al (1976) and Karimi et al (2022).The lipid values found in this study exceeded that of Cloete et al (2004b) due to the inclusion of subcutaneous and intermuscular fat in the samples used in this study.…”

Section: Discussionmentioning

confidence: 86%

“…The findings of Cloete et al (2004b) for protein and ash content also concurred with that of this study, namely that no statistical differences existed between sexes. Karimi et al (2022), however, found that ewes had lower crude protein levels and higher ash contents than rams.…”

Section: Discussionmentioning

confidence: 87%

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Slaughter and carcass characteristics of cross- and purebred lambs finished in a pasture-based system

Theron,

Brand,

Cloete

et al. 2024

SA J. An. Sci.

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One hundred and twelve cross- and purebred pasture-reared lambs were slaughtered at optimal backfat thickness (4 mm). Selected slaughter, carcass, and meat quality characteristics of these animals were assessed. Slaughter age, but not weight, was influenced by genotype, whereas rams were younger and heavier at slaughter than ewes. Throughout, the crossbred genotypes were younger at slaughter than their purebred contemporaries. Merinos had a lower dressing percentage (40.74%) than Dohne Merinos (43.89%), which in turn dressed out substantially lower than all crossbred combinations (~47%). Genotype did not influence the fat or bone percentage in the carcass, but differences existed for the meat percentage. Meat from all groups could be described as very tender (<32.96 N) and acceptable even to consumers not preferring pasture-produced lamb. The reduced slaughter age of crossbred lambs presents the possibility of shortening the production cycle of lamb while simultaneously increasing carcass yields.

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Section: Discussionsupporting

confidence: 92%

Section: Discussioncontrasting

confidence: 58%

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 87%

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Slaughter and carcass characteristics of cross- and purebred lambs finished in a pasture-based system

Theron,

Brand,

Cloete

et al. 2024

SA J. An. Sci.

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“…In the fattening groups examined as part of the study, males performed better than females in terms of daily live weight increase. Superiority due to anabolic-acting hormones is expected in animals used as male breeding material (22). The values were higher than the those obtained in a study by Omar (29) or the one reported by Haddad and Husein (18).…”

Section: Tab 3 Correlations Between Fattening Performance and Blood F...contrasting

confidence: 58%

The use of metabolomics tools in the evaluation of the fattening performance of lambs

KAHRAMAN¹,

DAŞ²,

GÜNGÖREN³

et al. 2022

Medycyna Weterynaryjna

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This study aimed to determine the metabolomic characteristics associated with the fattening performance of the Awassi lamb breed under intensive fattening for 90 days. Twenty-four lambs were used in the research. The lambs were divided into two groups according to their fattening performance (good fattening performance, n = 12, and poor fattening performance, n = 12), and their metabolomic properties were evaluated. The differences between the two research groups in the amino acids of alloisoleucine, aspartic acid, histidine, hydroxylysine, isoleucine, lysine, methionine, phenylalanine, tryptophan, valine, and 1-methylhistidine were found to be statistically significant (P ≤ 0.001). Moderately significant negative correlations were found between daily concentrate feed intake and 3-methylhistidine (r = −0.469; P = 0.021), hydroxylysine (r = −0.408; P = 0.048), and serotonin (r= −0.467; P = 0.021); as well as between the average daily weight gain (ADWG) and alloisoleucine (r = −0.528; P = 0.008), 3-methylhistidine (r = −0.440; P = 0.032), and hydroxylysine (r = −0.577; P = 0.003). A moderate positive correlation was found between hydroxyisovalerylcarnitine and ADWG (r = 0.476; P = 0.019), and a negative correlation was found between hydroxyisovalerylcarnitine and the feed conversion ratio (r = −0.430; P = 0.036). Pathway analysis revealed that the most important biological pathway was the phenylalanine, tyrosine, and tryptophan biosynthesis pathway. The results of the research reveal the potential for plasma free amino acid and carnitine profiles to be used as candidate biomarkers in the evaluation of fattening performance in lambs.

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Transcriptomics and metabolomics reveal improved performance of Hu sheep on hybridization with Southdown sheep

Kong

Yuan

et al. 2023

Food Research International

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Growth performance and carcass traits of purebred and crossbred fattening lambs from Ghezel ram with Grey Shirazi ewe

Cited by 3 publications

References 34 publications

Slaughter and carcass characteristics of cross- and purebred lambs finished in a pasture-based system

Slaughter and carcass characteristics of cross- and purebred lambs finished in a pasture-based system

The use of metabolomics tools in the evaluation of the fattening performance of lambs

Transcriptomics and metabolomics reveal improved performance of Hu sheep on hybridization with Southdown sheep

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