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Improved beef production from supplementation of Hereford, Brahman and crossbred cattle grazing low and medium quality pastures in the subtropics of Australia

Published online by Cambridge University Press:  02 September 2010

D. W. Hennessy ,
P. J. Williamson ,
D. J. McLennan ,
R. J. Farquharson ,
S. G. Morris  and
R. E. Darnell
D. W. Hennessy
Affiliation:
NSW Agriculture, Agricultural Research and Advisory Station, PMB 2, Grafton, NSW 2460, Australia
P. J. Williamson
Affiliation:
NSW Agriculture, Agricultural Research and Advisory Station, PMB 2, Grafton, NSW 2460, Australia
D. J. McLennan
Affiliation:
NSW Agriculture, Agricultural Research and Advisory Station, PMB 2, Grafton, NSW 2460, Australia
R. J. Farquharson
Affiliation:
NSW Agriculture, Agricultural Research and Advisory Station, PMB 2, Grafton, NSW 2460, Australia
S. G. Morris
Affiliation:
NSW Agriculture, Agricultural Research Institute, Wollongbar, NSW 2480, Australia
R. E. Darnell
Affiliation:
University of Southern Queensland, Darling Heights, Qld 4350, Australia
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Abstract

Subtropical grasslands are low in organic matter digestibility (OMD) (0·60) and nitrogen (N) (15 g/kg) for much of the year and this limits cattle production which is characterized by low calving rates and low weaning weights. Production has been based on Bos taurus British breeds of cattle but this is changing and now many breeding herds comprise B. indicus cows and their crosses. This change has increased some aspects of production, but low calving rates persist.

A 4-year study was undertaken with a view to improve calving rates and weaner output by supplementing cows grazing either native or improved pastures with a high protein oilseed meal (cottonseed meal; CSM) on four sites. These sites were subdivided into a total of 36 paddocks to allow for two replications in a 3 breeds × 3 supplementation rates × 2 pastures factorial design. Selected cows (no. = 216) from Hereford (H), Brahman (B) and Brahman × Hereford (BH) breed types were set to graze either native pastures (0·45 to 0·62 OMD, 8 to 15 gN per kg; low quality) or improved pastures (0·47 to 0·67 OMD, 10 to 22 g N per kg; medium quality). Cows were given either 0, 750 or 1500 glday of CSM for 130 days from calving until 4 weeks into a 12- to 13-week mating period. The CSM was given as two meals per week.

Live weight at mating of cows on the low quality pasture was increased (P < 0·01) over those not supplemented by feeding either 750 g CSM per day (H and B cows) or 1500 g CSM per day (all cows). There was no significant effect of supplementation on the mating weights ofB cows grazing the medium quality sites. Calving rate ofB cows was not increased by their supplementation on either low (4-year mean 58·3 %) or medium quality pastures (66·8%) but did tend to be higher in H cows when supplemented at 1500 g CSM per day on the low (66·7 v. 78·0 (s.e. 6·09) %; P < 0·1) and medium quality pastures (70·5 v. 93·5 (s.e. 4·72) %). An increased calving rate (65·8 (s.e. 6·6) % to 83·2 (s.e. 5·82) % in supplemented BH cows grazing low quality pastures approached significance (P < 0·1) when given CSM at 1500 glday but there was no increased trend in calving rate when this breed type was supplemented on medium quality pastures.

Weaning weights of calves from and B and BH cows were increased (P < 0·05) by supplementation of their dams at 750 glday and for calves weaned from H cows supplemented at 1500 glday of CSM. Supplementation at 1500 glday on low quality pastures increased weaner output per cow mated by 120% for H, by 65% for BH cows and by 50% for B cows. Weaner output was increased by 34 and 40%, respectively, for B and H cows when supplemented at 750 glday and grazing medium quality pastures but there was no significant effect of supplementation on output from BH cows. Responses in many parameters differed between years. These results were interpreted as a response to the protein in the oilseed meal supplement by B. taurus and B. taurus × B. indicus cross cows grazing on the subtropical pastures. The study also highlighted that responses to the meal differed between breed types, between the quality of the grazed pasture and between the years of supplementation.

Keywords

beefproductioncalving ratecottonseed oil-mealsubtropics
Type
Research Article
Information
Animal Science , Volume 66 , Issue 1 , February 1998 , pp. 93 - 104
Copyright
Copyright © British Society of Animal Science 1998

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References

Alexander, R. H. and McGowan, M. 1961. A filtration procedure for the in vitro determination of digestibility of herbage. Journal of the British Grassland Society 16: 275–277CrossRefGoogle Scholar
Barlow, R., Ellis, K. J., Williamson, P. J., Costigan, P., Stephenson, P. D., Rose, G. and Mears, P. T. 1988. Dry-matter intake of Hereford and first-cross cows measured by controlled release of chromic oxide on three pasture systems. Journal of Agricultural Science, Cambridge 110: 217–231.CrossRefGoogle Scholar
Barlow, R., Hearnshaw, H., Arthur, P. F. and Darnell, R. E. 1994. Evaluation of Hereford and first-cross cows on three pasture systems. I. Calf growth and reproductive performance of young cows. Journal of Agricultural Science, Cambridge 122: 121–129.CrossRefGoogle Scholar
Boniface, A. N., Murray, R. M. and Hogan, J. P. 1986. Optimum level of ammonia in the rumen liquor of cattle fed tropical pasture hay. Proceedings of the Australian Society ofAnimal Production 16: 151–154.Google Scholar
Duncan, R. C. 1967. An economic survey of the beef cattle industry in the north coast area of New South Wales. Miscellaneous bulletin no. 2, Division ofMarketing and Economics, Department of Agriculture, Sydney.Google Scholar
Genstat 5 Committee. 1987. Genstat 5 reference manual Clarendon Press, Oxford.Google Scholar
Haydock, K. P. and Shaw, N. H. 1975. The comparative yield method for estimating dry matter yield of pasture. Australian Journal of Experimental Agriculture and Animal Husbandry 15: 663–670.Google Scholar
Hearnshaw, H. 1995. Effect of preweaning nutrition on postweaning growth, carcass and meat quality traits. In Growth and development workshop (ed. Hennessy, D., McLennan, S. and Oddy, H.), pp. 59–67. CRC for Cattle and Beef Industries, Armidale.Google Scholar
Hearnshaw, H., Arthur, P. F., Williamson, P. J., Stephenson, P. D. and Dibley, K. 1996. Effect of cow genotype and pasture quality on milk yield. Proceedings the Australian Society of Animal Production 21: 401.Google Scholar
Hearnshaw, H. and Barlow, R. 1984. Evaluation of crossbred cattle on diverse pasture systems in New South Wales. Proceedings of second world conference on sheep cattle, section 7, pp. 32–36.Google Scholar
Hennessy, D. W. and Williamson, P. J. 1988. Effects of protein meal supplements on the growth and reproduction of Hereford heifers and cows grazing a native grass pasture in the subtropics. Australian Journal of Experimental Agriculture 28: 439–446.CrossRefGoogle Scholar
Hunter, R. A. and Siebert, B. D. 1985. Utilization of low quality roughage by Bos taurus and Bos indicus cattle. II. The effect of rumen degradable nitrogen and sulphur on voluntary food intake and ruminal characteristics. British Journal ofNutrition 53: 649–656.CrossRefGoogle Scholar
Lee, G. J., Hennessy, D. W., Williamson, P. J., Nolan, J. V., Kempton, T. J. and Leng, R. A. 1985. Responses to protein meal supplements by lactating beef cattle given a low-quality pasture hay. Australian Journal of Agricultural Research 36: 729–741.CrossRefGoogle Scholar
McCullagh, P. and Nelder, J. A. 1989. Generalised linear models, second edition. Chapman and Hall, Cambridge University Press.CrossRefGoogle Scholar
O'Rourke, P. K., Doogan, V. J., McCosker, T. H. and Eggington, A. R. 1991. Prediction of conception rate in extensive beef herds in north-western Australia. 1. Seasonal mating and improved management. Australian Journal Experimental Agriculture 31: 1–7.CrossRefGoogle Scholar
Rutledge, J. J., Robison, O. W., Ahlschwede, W. T. and Legates, J. E. 1971. Milk yield and its influence on 205-day weight of beef calves. Journal ofAnimal Science 33: 563–567.Google ScholarPubMed
Sawyer, G. J., Barker, D. J. and Morris, R. J. 1991a. Performance of young breeding cattle in commercial herds in the south-west of Western Australia. 1. Liveweight, body condition, conception and fertility in heifers. Australian Journal of Experimental Agriculture 31: 431–441.CrossRefGoogle Scholar
Sawyer, G. J., Barker, D. J. and Morris, R. J. 1991b. Performance of young breeding cattle in commercial herds in the south-west of Western Australian. 2. Liveweight, body condition, timing of conception and fertility in first-calf heifers. Australian Journal of Experimental Agriculture 31: 443–454.CrossRefGoogle Scholar
Smith, J. F. and Stewart, R. D. 1992. Effects of nutrition on the ovulation rate of the ewe. In Reproductive physiology Merino sheep, concepts and consequences (ed. Martin, C. M. G. B. and Purvis, I. W.), pp. 85–102. University of Western Australia, Perth.Google Scholar
Sparke, E. J. and Lamond, D. R. 1968. The influence of supplementary feeding on growth and fertility of beef heifers grazing natural pastures. Australian Journal of Experimental Agriculture and Animal Husbandry 8: 277–280.Google Scholar
Stokes, S. R., Goetsch, A. L., Jones, A. L. and Landis, K. M. 1988. Feed intake and digestion by beef cows fed prairie hay with different levels of soybean meal and receiving postruminal administration of antibiotics. Journal of Animal Science 66: 1778–1789.CrossRefGoogle ScholarPubMed
Wilkins, J. F., Hoffman, W. D., Larsson, S., Larsson, K., Hamilton, B. A., Hennessy, D. W. and Hillard, M. A. 1996. Protected lipid/protein supplement improves synchrony of oestrus and conception rate in beef cows. Proceedings of the 13th international congress on animal reproduction (ed. Stone, G. and Evans, G.), vol. 3, pp. 19–20, 30 June-4 July, Sydney.Google Scholar
Wiltbank, J. N., Gregory, K. E., Swiger, L. A., Ingalls, J. E., Rothlisberger, J. A. and Koch, R. M. 1966. Effects of heterosis on age and weight at puberty in beef heifers. Journal ofAnimal Science 25: 744–751.Google Scholar