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Effect of supplementary feeding and herbage mass on the intake and performance of grazing ewes in early lactation

Published online by Cambridge University Press:  02 September 2010

J. A. Milne ,
T. J. Maxwell  and
W. Souter
J. A. Milne
Affiliation:
Hill Farming Research Organisation, Bush Estate, Penicuik, Midlothian EH26 0PY
T. J. Maxwell
Affiliation:
Hill Farming Research Organisation, Bush Estate, Penicuik, Midlothian EH26 0PY
W. Souter
Affiliation:
Hill Farming Research Organisation, Bush Estate, Penicuik, Midlothian EH26 0PY
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Abstract

1. Two experiments were conducted to examine the effects of a cereal-based supplement and herbage mass on the intake and performance by Border Leicester × Scottish Blackface ewes nursing twin lambs in early lactation.

2. In one experiment 16 ewes, individually penned, were given one of four amounts of supplement (0, 320, 640 and 960 g organic matter per ewe per day) and offered ad libitum freshly-cut perennial ryegrass herbage (organic-matter digestibility 82%). Intake of herbage and total organic matter digestibility declined linearly with increasing intake of supplement (0·84 g organic matter of herbage per g organic matter of supplement and 0·50 percentage units per 100 g organic matter of supplement respectively).

3. In the second experiment three amounts of supplement (0, 480 and 960 g organic matter per ewe per day) were offered individually to groups of seven ewes grazing a perennial ryegrass sward of high digestibility, maintained at herbage masses of either 500 or 750 kg organic matter per ha. A further group of seven unsupplemented ewes were grazed on the same sward maintained at 1500 kg organic matter per ha. Intakes of herbage and digestible organic matter by ewes, and lamb live-weight gain, were all significantly greater and ewe live-weight loss significantly less at herbage masses of 750 and 1500 tha n at 500 kg organic matter per ha (P <0·05). The mean decline in herbage intake was 0·93g organic matter per g organic matter supplement consumed. Amount of supplement had no significant effect on lamb live-weight gain at either weight of herbage nor on ewe live-weight loss at the 750 kg organic matter per ha herbage mass. At 500 kg organic matter per ha herbage mass, intake of digestible organic matter was significantly greater and ewe live-weight loss was significantly less for 960 than for 0 and 480 g organic matter per day amounts of supplement (P <0·05).

Type
Research Article
Information
Animal Production , Volume 32 , Issue 2 , April 1981 , pp. 185 - 195
Copyright
Copyright © British Society of Animal Science 1981

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References

REFERENCES

Alexander, R. H. and McGowan, Mary. 1966. The routine determination of in vitro digestibility of organic matter in forages—an investigation of th e problems associated with continuous large-scale operation. J. Br. Grassld Soc. 21: 140–147.CrossRefGoogle Scholar
Allden, W. G. and Whittaker, I. A. McD. 1970. The determinants of herbage intake by grazing sheep: the interrelationship of factors influencing herbage intake and availability. Aust. J. agric. Res. 21: 755–766.CrossRefGoogle Scholar
Arnold, G. W. 1960. The effect of the quantity and quality of pasture available to sheep on their grazing behaviour. Aust. J. agric. Res. 11: 1034–1043.CrossRefGoogle Scholar
Balch, C. C. and Campling, R. C. 1969. Voluntary intake of food. In Handbuch der Tiererndhrung (ed. Lenkeit, W., Breirem, K. and Crasemann, E.), Vol. 1, pp. 554–579. Parey, Hamburg.Google Scholar
Blaxter, K. L. and Wilson, R. S. 1963. The assessment of a crop husbandry technique in terms of animal production. Anim. Prod. 5: 27–2.Google Scholar
Chambers, A. R. M., Hodgson, J. and Milne, J. A. 1981. The development and use of equipment for the automatic recording of ingestive behaviour in sheep and cattle. Grass Forage Sci. In press.Google Scholar
Coop, I. E. and Abrahamson, M. 1973. Effect of teeth condition on intake of grazing sheep. JV.Z. J. Exp. Agric. 1: 58–64.Google Scholar
Hodgson, J. 1977. Factors limiting herbage intake by the grazing animal. In Proc. int. Meet, on Anim. Prod, from Temperate Grassld., Dublin, pp. 70–75.Google Scholar
Hodgson, J. and Milne, J. A. 1978. The influence of weight of herbage per unit area and per animal upon the grazing behaviour of sheep. In Proc. 7th gen. Meet. Eur. Grassld Fed., Ghent, pp. 431–438.Google Scholar
Hodgson, J. and Rodriguez, J. M. 1971. The measurement of herbage intake in grazing studies. Rep. Grassld Res. Inst., 1970, pp. 132–140.Google Scholar
Holder, J. M. 1962. Supplementary feeding of grazing sheep—its effect on pasture intake. Proc. Aust. Soc. Anim. Prod. 4: 154–159.Google Scholar
Holmes, W. and Jones, J. G. W. 1964. The efficiency of utilization of fresh grass. Proc. Nutr. Soc. 23: 88–99.CrossRefGoogle ScholarPubMed
Jamieson, W. S. and Hodgson, J. 1979. The effects of variation in sward characteristics upon the ingestive behaviour and herbage intake of calves and lambs under a continuous stocking management. Grass Forage Sci. 34: 273–282.CrossRefGoogle Scholar
Langlands, J. P. 1975. Techniques for estimating nutrient intake and its utilization by the grazing ruminant. In Digestion and Metabolism in the Ruminant (ed. McDonald, I. W. and Warner, A. C. I.), pp. 320–332. University of New England Publishing Unit, Armidale.Google Scholar
Leaver, J. D., Campling, R. C. and Holmes, W. 1969. The influence of flexible and rigid grazing management and of supplementary feed on output per hectare and per cow. Anim. Prod. 11: 161–172.Google Scholar
Maxwell, T. J., Doney, J. M., Milne, J. A., Peart, J. N., Russel, A. J. F., Sibbald, A. R. and MacDonald, D. 1979. The effect of rearing type and prepartum nutrition on the intake and performance of lactating Greyface ewes at pasture. J. agric. Sci, Camb. 92: 165–174.CrossRefGoogle Scholar
Oddy, V. H. 1978. Milk production in ewes fed high grain diets. Proc. Aust. Soc. Anim. Prod. 12: 145.Google Scholar
Robinson, J. J., McHattie, I., Calderon cortes, J. F. and Thompson, J. L. 1979. Further studies on the response of lactating ewes to dietary protein. Anim. Prod. 29: 257–269.Google Scholar
Russel, A. J. F., Maxwell, T. J., Sibbald, A. R. and McDonald, D. 1977. Relationships between energy intake, nutritional state and lamb birt h weight in Greyface ewes. J. agric. Sci., Camb. 89: 667–673.CrossRefGoogle Scholar
Tilley, J. M. A. and Terry, R. A. 1963. A two-stage technique for the in vitro digestion of forage crops. J. Br. Grass/dSoc. 18: 104–111.CrossRefGoogle Scholar
Tribe, D. E. 1950. Influence of pregnancy and social facilitation on the behaviour of the grazing sheep. Nature, Lond. 166: 74.CrossRefGoogle ScholarPubMed
Williams, C. H., David, D. J. and Iismaa, O. 1962. The determination of chromic oxide in faeces samples by atomic absorption spectrophotometry. J. agric. Sci., Camb. 59: 381–385.CrossRefGoogle Scholar
Van Soest, P. J. and Wine, R. H. 1967. Use of detergents in the analysis of fibrous feeds. IV. Determination of plant cell-wall constituents. J. Ass. Off. Analyt. Chem. 50: 50–55.Google Scholar