Differences in Swine Performance and Carcass Characteristics because of Dietary Protein Level, Sex and Breed

Hale, O. M.; Southwell, B. L.

doi:10.2527/jas1967.262341x

Cited by 32 publications

(22 citation statements)

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“…There was little difference between purebred Durocs and Yorkshlres for these traits. These differences among carcass traits of the three pure breeds agree very closely with reports in the literature (Hale and Southwell, 1967;Bruner and Swiger, 1968;Quijandria et al, 1970).…”

Section: Feedlot Per]ormance and Probe Back]at O] Giltssupporting

confidence: 81%

“…This difference was significant only between Durocs and Yorkshires. Similar differences in growth rate between purebreds of these three breeds have previously been reported (Bruner and Swiger, 1968;Hale and Southwell, 1967;Quijandria, Woodard and Robison, 1970). However, the last two studies cited reported Durocs also gained weight more efficiently than the other two breeds; while in the present study, the Yorkshire was the most efficient pure breed.…”

Section: Feedlot Per]ormance and Probe Back]at O] Giltscontrasting

confidence: 43%

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Evaluation of Purebreds and Two-Breed Crosses in Swine: Feedlot Performance and Carcass Merit

Johnson

Omtvedt

Walters

1973

Journal of Animal Science

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Summary FEEDLOT performance of 941 barrows and gilts and carcass traits of 190 barrows of purebreds and crossbreds of the Duroc, Hampshire and Yorkshire breeds were evaluated for differences between purebreds and reciprocal crosses and for heterosis. Purebred and crossbred litters were farrowed contemporaneously at the Ft. Reno Experiment Station in the 1971 spring and fall farrowing seasons.Rather distinct differences between the pure breeds were evident for most traits. In general, Durocs gained weight more rapidly than Hampshires and Yorkshires while Yorkshires were the most efficient pure breed. Hampshire barrows had less backfat, more loin eye area and more total yield of lean cuts than Duroc or Yorkshire barrows, however Duroc barrows were superior to the other breeds for quality scores of marbling, firmness and color.Heterosis, defined as significant deviation from the average of parental breeds, was found for average daily gain on test (10.2%), age at 100 kg (5.2%) and average daily feed intake (5.9%). There was little evidence for heterosis for carcass measurements or yield of lean cuts. There was positive heterosis for marbling and firmness scores in crosses involving Durocs; however, Hampshire-Yorkshire crosses had negative heterosis for each of these traits.Reciprocal differences between Duroc and Hampshire crosses were small and nonsignificant for all traits. However, most reciprocal differences in crosses involving Yorkshires were significant indicating a difference in the maternal influence of the three breeds.

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Section: Feedlot Per]ormance and Probe Back]at O] Giltssupporting

confidence: 81%

Section: Feedlot Per]ormance and Probe Back]at O] Giltscontrasting

confidence: 43%

Evaluation of Purebreds and Two-Breed Crosses in Swine: Feedlot Performance and Carcass Merit

Johnson

Omtvedt

Walters

1973

Journal of Animal Science

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“…In addition, no significant sex difference was observed between the Gene Pool barrows and gilts. This is in contrast to results presented by Cahill et al (1960), Brunet et al (1958), Hale and Southwell (1967) and Bruner and Swiger (1968).…”

Section: Fed Under Two Diets 77contrasting

confidence: 56%

Gain, Feed Conversion and Carcass Traits of Swine Fed under Two Nutritional Regimes

Cunningham

Socha

Peo

et al. 1973

Journal of Animal Science

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“…Parity and the parity-maternal heterosis interaction were non-significant sources of variation for all carcass traits studied. (1976) indicated that the sex differences for days required to produce 85 pounds of fat corrected muscle was 2.0 whereas the remaining estimates agreed in sign and relative magnitude with other published estimates (Hale and Southwell, 1967;Bruner and Swiger, 1968;Quijandria e^ ^1. , 1970).…”

Section: Carcass Traitssupporting

confidence: 67%

“…, 1961;Hale and Southwell, 1967;Bruner and Swiger, 1968;Quijandria et al, 1970;Bereskin et al, 1973;Bereskin and Davey, 1974). Bereskin et al (1971), however, found no significant differences between sexes for any carcass traits.…”

Section: Non-genetic Effects On Swine Performancementioning

confidence: 99%

Individual and maternal heterosis estimated from single crosses and backcrosses of swine

Schneider

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Differences in Swine Performance and Carcass Characteristics because of Dietary Protein Level, Sex and Breed

Cited by 32 publications

References 0 publications

Evaluation of Purebreds and Two-Breed Crosses in Swine: Feedlot Performance and Carcass Merit

Evaluation of Purebreds and Two-Breed Crosses in Swine: Feedlot Performance and Carcass Merit

Gain, Feed Conversion and Carcass Traits of Swine Fed under Two Nutritional Regimes

Individual and maternal heterosis estimated from single crosses and backcrosses of swine

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