Genetic and Phenotypic Parameters of Carcass Traits in Ram Lambs Reared Artificially in a Controlled Environment

Shrestha, J. N. B.; Fortin, A.; Heaney, D. P.

doi:10.4141/cjas86-100

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…The phenotypic correlations observed between the various growth and carcass traits are similar to those observed in other studies (Singh et al 2006;Brito et al 2015), but with some exceptions. The correlations between loin, shoulder, leg and total yield were moderate or strong and positive in this study, but were negligible in the study of Shrestha et al (1986). The correlation between birth weight and pre-weaning growth rate was 0.562, but Singh et al (2006) reported a value of 0.18.…”

Section: Discussioncontrasting

confidence: 61%

Growth and carcass trait association with variation in the somatostatin receptor 1 (SSTR1) gene in New Zealand Romney sheep

Zhao

Zhou

et al. 2018

New Zealand Journal of Agricultural Research

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Somatostatin receptors (SSTRs) are thought to regulate the growth inhibitory effect of somatostatin and play a role in regulating growth hormone secretion. In this study, polymerase chain reaction-single-stranded conformational polymorphism (PCR-SSCP) analysis was used to screen for variation in the 3 ′untranslated region of the SSTR1 gene (SSTR1) in 941 New Zealand Romney sheep. Phenotypic data were available for birth weight, weaning weight, pre-weaning growth rate, hot carcass weight (HCW), subcutaneous fat depth [measured as VIAscan-GR (V-GR)], and leg, loin, shoulder and total lean meat yield. Weaning weight was correlated (r = 0.854; P < .001) with pre-weaning growth rate; and leg, loin and shoulder lean meat yield were correlated with total lean meat yield (r = 0.878, 0.835 and 0.739, respectively, all P < .001). Three PCR-SSCP banding patterns were detected and DNA sequencing revealed three different nucleotide sequences (A-C). The presence of A was found to be associated with a decrease in HCW, while the presence of C was found to be associated with an increase in V-GR and lower birth weights.

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Section: Discussioncontrasting

confidence: 61%

Growth and carcass trait association with variation in the somatostatin receptor 1 (SSTR1) gene in New Zealand Romney sheep

Zhao

Zhou

et al. 2018

New Zealand Journal of Agricultural Research

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“…Wolf (1982) also estimated a positive genetic correlation of 0.17 for the relationship between average daily gain from birth to slaughter and the proportion of total lean in the higher-priced cuts. Shrestha et al (1986a) reported heritability estimates from 0.38 to 0.67 for shoulder and leg (trimmed and lean), total trimmed retail cuts, total lean, chilled carcass weight, and lean weight gain per day. Estimates based on loin, rack, front, back, total retail cuts, kidney fat weight, dressing percentage, and chilled carcass weight gain per day showed lower and nonsignificant relationships with total trimmed retail cuts or total lean.…”

Section: Product Qualitymentioning

confidence: 99%