Post-weaning growth and carcase characteristics of Chianina, Brahman and Hereford cross, and Hereford steers in southern Queensland

Strachan, R. T.; Peart, W. J.; Coleman, R. G.; O'Rourke, PK

doi:10.1071/ea9800257

Cited by 4 publications

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“…Crosses involving late-maturing European breeds have consistently had lower fat depths than British breeds at the same carcass weight (Gartner and O'Rourke 1976;Strachan 1980;Hearnshaw and Doyle 1981;Hodge 1987). The lower fat depths in the A4SlH3 and A4S2H2 steers than in A4H4 steers would therefore be due to the Simmental content, but the influence of the European breed was not great enough to lead to fat depths that were commercially too low at carcass weights of about 220 kg.…”

Section: Discussionmentioning

confidence: 99%

“…Other studies show that late-maturing European breeds (e.g. Simmental) have weaning weights and post-weaning liveweight gains that are 10-20% greater than those of early-maturing British breeds under subtropical conditions (Pahnish 1969;Smith et al 1976; Barlow and O'Neill 1978;Strachan et al 1980). This suggests there is potential to increase growth rates of cattle reared in south-western Queensland by crossbreeding for the growth characteristics of European breeds and the adaptation of B. indicus breeds.…”

Section: Introductionmentioning

confidence: 99%

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Growth and carcass characteristics of three-way Africander multiply Simmental multiply Hereford crossbreds in south-western Queensland

Cavaye¹,

Knight²,

Tierney³

et al. 1992

Aust. J. Exp. Agric.

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Liveweight and carcass traits of 3-way Africander (A) x Simmental (S) x Hereford (H) crossbreds and purebred Herefords were monitored predominately on native pastures at Dirranbandi, Queensland, for 2 calf crops over 6 years. The relative breed compositions of the crossbreds were A4S2H2, A4S 1 H3 and A4H4. The mean liveweight of the A4S2H2 cattle ranked highest from about 250 days post-weaning to slaughter (520 days post-weaning) for steers, and at first joining for heifers (560 days post-weaning). Differences in liveweight were not significant at all times. The A4S2H2 and A4SlH3 steers had the highest (P<0.05) post-weaning average daily gains. Differences in weaning weight between crossbreds were carried through to slaughter for steers and to joining for heifers. The A4S2H2 steers had the highest (P<0.05) mean final liveweight (433 kg) and mean carcass weight (232 kg). There was no difference in carcass weight between the other crossbreds and Herefords. Fat depth at the P8 rump site of A4H4 crossbreds (8.5 mm) was higher (P<0.05) than that of Herefords (5.5 mm) and other crossbreds. Dressing percentages were similar for all breed types. The A4S2H2 maiden heifers had higher (P<0.05) liveweights at first joining (369 kg) than the A4S1H3 (353 kg) and A4H4 (337 kg) heifers. These data show that beef producers in southwestern Queensland can increase carcass weights with A4S2H2 crossbreds and produce carcasses that primarily meet the Korean-EC market and the requirements of domestic supermarket outlets.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Growth and carcass characteristics of three-way Africander multiply Simmental multiply Hereford crossbreds in south-western Queensland

Cavaye¹,

Knight²,

Tierney³

et al. 1992

Aust. J. Exp. Agric.

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Growth and carcass characteristics of crossbred and straightbred Hereford steers. III. Post-weaning growth in seven environments in New South Wales

Darnell¹,

Hearnshaw²,

Barlow³

1987

Aust. J. Agric. Res.

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Post-weaning growth, liveweight and body condition at slaughter were examined in 289 steers comprised of straightbred Hereford and first cross Brahman x Hereford, Simmental x Hereford and Friesian x Hereford. The steers were grown from weaning in seven environments throughout New South Wales. All steers were slaughtered when the average fat cover of the Herefords was in the range of 6-10 mm at the 12/13th rib. Brahman crossbreds were in similar body condition to Herefords at slaughter, which in turn were generally in better condition than both Simmental and Friesian crossbreds. Crossbred steers were heavier than Herefords at slaughter. Simmental crosses and Friesian crosses were 53 kg (12%) heavier on average over all environments, and Brahman crosses 41 kg (10%) and 83 kg (16%) heavier in inland and coastal environments respectively. Mean average daily gain (ADG) of the crossbred steers was always greater than that of the Hereford steers. There was a trend for ADG to be greater among the Brahman crosses earlier in the post-weaning period, but for the Simmental and Friesian crosses to grow faster later in the post-weaning period. Simmental crosses maintained a constant ADG advantage relative to Friesian crosses throughout the post-weaning period in environments where growth was favoured. Significant genotype x environment interactions occurred. Relative to Herefords, Simmental and Friesian crossbreds responded more to improved conditions, while Brahman crossbreds maintained a constant growth advantage regardless of environmental conditions. Bos taurus crosses grew faster than Brahman crosses, and Simmental crosses faster than Friesian crosses, only when environments were highly favourable.

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Productivity of Hereford, highgrade Simmental and Belmont Red beef herds in central Queensland 5. Liveweights and carcass traits of steers

Tierney¹,

Burns²,

Mayer³

et al. 1992

Aust. J. Exp. Agric.

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Postweaning liveweights and carcass traits of Hereford, 1/4 Simmental-3/4 Hereford crossbreed, first-cross Simmental-Hereford, highgrade Simmental, and Belmont Red steers were compared from 3 cohorts bred at Brigalow Research Station, Theodore, Queensland. One half of each breed was grown and fattened at Brigalow Research Station, and the other half at a different site in southern Queensland, for each of 3 cohorts. When the mean liveweight of the Hereford steers reached 450 kg, a random selection of all breed groups was slaughtered (light group), while the remainder was slaughtered when the Hereford steers reached 550 kg liveweight (heavy group). Highgrade Simmental steers had higher (P<0.05) liveweights than 114 Simmentals and Herefords at each site in each year at all ages. While highgrade Simmentals were usually heavier than first-cross Simmental-Herefords and Belmont Reds, differences were not always significant. First-cross Simmental- Hereford and Belmont Red steers were usually heavier (P<0.05) than Herefords. Response to higher nutritional levels from provision of forage crop varied according to breed, with highgrade Simmentals showing the greatest liveweight response (268 kg by 27 months) and Belmont Reds the least (164 kg) over contemporaries grazing pasture only. Highgrade Sirnmental steers had the heaviest (P<0.05) carcasses in both slaughter groups (274 and 340 kg, respectively), and there were no significant (P>0.05) differences between Belmont Red and first-cross Simmental-Hereford steers (light group, 263 and 258 kg; heavy group, 318 and 327 kg). The 114 Simmental steers had heavier (P<0.05) carcasses than Hereford steers in both slaughter groups (light, 244 v. 235 kg; heavy, 307 v. 295 kg). Belmont Red carcasses had the greatest rib fat depth for both slaughter groups (6.6 and 8.4 mm), and highgrade Simmental carcasses were leanest (3.3 and 4.1 mm; P<0.05). Carcasses from 114 Simmental and from Hereford steers had similar rib fat depth in both slaughter groups (light, 5.0 and 5.1 mm; heavy, 6.8 and 6.8 mm), while the fat depths on first-cross Simmental-Hereford carcasses were 4.3 and 6.0 mm. Although highgrade Simmental steers yielded the heaviest carcasses, the lack of subcutaneous fat cover may reduce the value of these carcasses, on a unit weight basis. By contrast, Belmont Red carcasses were more likely to meet the range of market specifications for grass-fed carcasses.

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Post-weaning growth and carcase characteristics of Chianina, Brahman and Hereford cross, and Hereford steers in southern Queensland

Cited by 4 publications

References 0 publications

Growth and carcass characteristics of three-way Africander multiply Simmental multiply Hereford crossbreds in south-western Queensland

Growth and carcass characteristics of three-way Africander multiply Simmental multiply Hereford crossbreds in south-western Queensland

Growth and carcass characteristics of crossbred and straightbred Hereford steers. III. Post-weaning growth in seven environments in New South Wales

Productivity of Hereford, highgrade Simmental and Belmont Red beef herds in central Queensland 5. Liveweights and carcass traits of steers

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