A comparison of three terminal sire breeds for crossbred lamb production. 1. Growth performance and carcass classification

Merrell, B. G.; Webster, G. M.; Ellis, Michael

doi:10.1017/s0263967x00002263

Cited by 4 publications

(7 citation statements)

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“…Collectively, these data demonstrate a consistent advantage of the Texel as a terminal sire in terms of carcass lean, although this is achieved at the expense of daily live-weight gain (Wolf et al, 1980;Cameron and Drury, 1985;Merrell et al, 1990). The significantly higher proportion of bone in the carcasses of Suffolk crosses than in the Texels was also found by Wolf et al (1980) when compared at the same level of fatness.…”

Section: Discussionmentioning

confidence: 65%

“…Details of the ewe flock, the selection of rams and the management of the sheep are described by Merrell et al (1990). The crossbred progeny of the three terminal sire breeds (Suffolk, Texel and Charollais) were selected for slaughter when it was estimated that they would produce carcasses of Meat and Livestock Commission (MLC) fat class 2 to 3L.…”

Section: Methodsmentioning

confidence: 99%

“…However, while a number of sire breed comparisons have been undertaken in the past (Wolf, Smith and Sales, 1980;Cameron and Drury, 1985;Kempster, Croston, Guy and Jones, 1987), none has compared directly three breeds of current interest -Suffolk, Texel and Charollais. This paper therefore reports on the evaluation of carcasses from crossbred lambs sired by rams of these three breeds which had been used in the performance trial described in the companion paper (Merrell, Webster and Ellis, 1990).…”

Section: Introductionmentioning

confidence: 99%

“…

Link to this article: http://journals.cambridge.org/abstract_S0263967X00002275How to cite this article: G. M. Webster, M. Ellis and B. G. Merrell (1990). A comparison of three terminal sire breeds for crossbred lamb production 2.

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mentioning

confidence: 99%

“…How to cite this article: G. M. Webster, M. Ellis and B. G. Merrell (1990). A comparison of three terminal sire breeds for crossbred lamb production 2.…”

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confidence: 99%

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A comparison of three terminal sire breeds for crossbred lamb production 2. Carcass evaluation

Webster¹,

Ellis

Merrell

1990

BSAP Occas. Publ.

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Section: Discussionmentioning

confidence: 65%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…

…”

mentioning

confidence: 99%

“…How to cite this article: G. M. Webster, M. Ellis and B. G. Merrell (1990). A comparison of three terminal sire breeds for crossbred lamb production 2.…”

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A comparison of three terminal sire breeds for crossbred lamb production 2. Carcass evaluation

Webster¹,

Ellis

Merrell

1990

BSAP Occas. Publ.

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Genetic analyses of live weight and carcass composition traits in purebred Texel, Suffolk and Charollais lambs

Fitzmaurice

Conington

Fetherstone

et al. 2020

Animal

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Lamb live weight is one of the key drivers of profitability on sheep farms. Previous studies in Ireland have estimated genetic parameters for live weight and carcass composition traits using a multi-breed population rather than on an individual breed basis. The objective of the present study was to undertake genetic analyses of three lamb live weight and two carcass composition traits pertaining to purebred Texel, Suffolk and Charollais lambs born in the Republic of Ireland between 2010 and 2017, inclusive. Traits (with lamb age range in parenthesis) considered in the analyses were: pre-weaning weight (20 to 65 days), weaning weight (66 to 120 days), post-weaning weight (121 to 180 days), muscle depth (121 to 180 days) and fat depth (121 to 180 days). After data edits, 137 402 records from 50 372 lambs across 416 flocks were analysed. Variance components were derived using animal linear mixed models separately for each breed. Fixed effects included for all traits were contemporary group, age at first lambing of the dam, parity of the dam, a gender by age of the lamb interaction and a birth type by rearing type of the lamb interaction. Random effects investigated in the pre-weaning and weaning weight analyses included animal direct additive genetic, dam maternal genetic, litter common environment, dam permanent environment and residual variances. The model of analysis for post-weaning, muscle and fat depth included an animal direct additive genetic and litter common environment effect only. Significant direct additive genetic variation existed in all cases. Direct heritability for pre-weaning weight ranged from 0.14 to 0.30 across the three breeds. Weaning weight had a direct heritability ranging from 0.17 to 0.27 and postweaning weight had a direct heritability ranging from 0.15 to 0.27. Muscle and fat depth heritability estimates ranged from 0.21 to 0.31 and 0.15 to 0.20, respectively. Positive direct correlations were evident for all traits. Results revealed ample genetic variation among animals for the studied traits and significant differences between breeds to suggest that genetic evaluations could be conducted on a per-breed basis. ImplicationsThis study demonstrated the existence of genetic variation between different breeds of sheep for the three main live weight and two carcass composition traits in the Irish sheep production system suggesting that genetic evaluations should be conducted on a per-breed basis. This would allow for more informed and accurate selection decisions on farm, resulting in superior productivity and profitability within Irish sheep flocks. †

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Evaluating Texel-, Suffolk-, and Columbia-Sired Offspring: I. Prolificacy, Survival, and Preweaning Growth Traits Under a Forage-Based Lambing System

Ali

Morrical

Hoffman³

2005

The Professional Animal Scientist

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A comparison of three terminal sire breeds for crossbred lamb production. 1. Growth performance and carcass classification

Cited by 4 publications

References 4 publications

A comparison of three terminal sire breeds for crossbred lamb production 2. Carcass evaluation

A comparison of three terminal sire breeds for crossbred lamb production 2. Carcass evaluation

Genetic analyses of live weight and carcass composition traits in purebred Texel, Suffolk and Charollais lambs

Evaluating Texel-, Suffolk-, and Columbia-Sired Offspring: I. Prolificacy, Survival, and Preweaning Growth Traits Under a Forage-Based Lambing System

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