The effect of stocking rate on the performance of steers in central coastal New South Wales

1977 ◽  
Vol 17 (89) ◽  
pp. 899 ◽  
Author(s):  
Davies H Lloyd
Keyword(s):  
New South ◽  
Average Daily Gain ◽  
New South Wales ◽  
First Year ◽  
Stocking Rate ◽  
Paspalum Dilatatum ◽  
Period Effects ◽  
South Wales ◽  
The University ◽  
Daily Gain

The effect of stocking rate and sowing one-eighth of the area to lucerne on the liveweight change and carcase characteristics of Hereford steers grazing pastures dominated by Paspalum dilatatum was studied at the Wolverton Farm of the University of Sydney, Bringelly, New South Wales from 1971 to 1974. Stocking rate (1.5, 2.0, 2.5 and 3.0 steers ha-1) had an effect upon mean daily liveweight gain in some periods and this was reflected in the number of days taken to achieve 450 kg. (1.5 ha-1 took 509 days, 2.0 took 595, 2.5 took 802 and 3.0 took 842 days). There were significant differences in average daily gain between replicates in most periods. The lucerne did not persist after the first year. Having one-eighth of the area sown to lucerne did not significantly affect daily liveweight gain. There were highly significant period effects with the highest daily gain occurring in spring and summer, the lowest in winter and gain in autumn being dependent upon rainfall and stocking rate. In many periods increasing stocking rate above 2.0 steers ha-1 did not increase the per hectare liveweight gain.

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

1987 ◽  
Vol 38 (5) ◽  
pp. 941 ◽  
Author(s):  
RE Darnell ◽  
H Hearnshaw ◽  
R Barlow
Keyword(s):  
Body Condition ◽  
Bos Taurus ◽  
New South ◽  
Average Daily Gain ◽  
New South Wales ◽  
Coastal Environments ◽  
South Wales ◽  
Similar Body ◽  
Daily Gain ◽  
Constant Growth

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.

Preweaning growth of Brahman, Braford, and Africander first-cross calves in the subtropics of New South Wales

1995 ◽  
Vol 35 (1) ◽  
pp. 1
Author(s):  
H Hearnshaw ◽  
PF Arthur ◽  
R Barlow ◽  
W Hoffman
Keyword(s):  
Body Length ◽  
New South ◽  
Average Daily Gain ◽  
New South Wales ◽  
Coat Colour ◽  
The Other ◽  
Colour Pattern ◽  
South Wales ◽  
Daily Gain ◽  
Preweaning Period

Preweaning growth of 435 first-cross Brahman x Hereford (BH), Braford x Hereford (BM) and Africander x Hereford (AM) calves was evaluated at Ballina in the subtropics of New South Wales. Thirty-five Brahman, 32 Braford, and 23 Africander sires were mated to Hereford females over 3 years to produce the calves. Mean gestation of BH calves (290 days) was 4 and 6 days longer than BfH and AfH calves, respectively. BH and AfH calves had more eyelid pigmentation (88 and 98%, respectively) than BM calves (59%). For males, birth weights of BH calves were higher than BfH, which, in turn, were heavier than AfH calves (38.6 v. 34.8 v. 31.5 kg). For females, birth weights of BH and BfH calves were not significantly different but were higher than those of AfH calves (33.3 and 32.6 v. 30.4 kg). BH calves had higher average daily gain (ADG) than BfH and AfH calves during the second half of the preweaning period, resulting in 200-day liveweights of 175.4, 167.5, and 167.3 kg for BH, BfH, and AfH calves. BH calves were taller and had larger girths than the other crosses at birth, but AM calves exhibited the greatest increase in height and body length from birth to weaning. For BH, BMI, and AfH calves, 34,6, and 94% were predominantly red, whereas 6, 94, and 5% were also red but had a Hereford coat colour pattern.

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