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The lactation performance of red deer on hill and improved species pastures

  • A. S. I. Loudon (a1), A. D. Darroch (a1) and J. A. Milne (a1)
Abstract
Summary

Three groups of red deer hinds of 9–10 years of age were grazed upon an indigenous hill pasture (A), an improved species grass sward (predominantly perennial ryegrass) maintained at < 1500 kg D.M./ha (B), and one maintained at 2000 kg D.M./ha (C) from immediately after calving on 29 May until weaning on 22 September. Numbers of hinds in each treatment were 8, 6 and 9 respectively. Milk yields of hinds were estimated on swards A and C by the calf-suckling technique and hind and calf live-weight changes and hind grazing behaviour were recorded on all three swards during lactation.

Hinds on award C yielded on average 60% more milk over the lactation period than hinds on sward A, day 40 yields being 2·2 and 1·5 kg/day respectively. Calf growth rates (treatment A, 257 ± 9·5, B, 324 ± 12·1 and C, 369 ± 14·5 g/day) were higher on the improved species sward than on the hill sward and higher on the improved sward with the greater herbage mass. On treatments A and C calf growth rates were significantly (P < 0·05, r = 0·69) correlated with milk yield throughout lactation. At weaning, calves on sward C were 7·5 and 4·5 kg heavier than those on swards A and B respectively. Biting rates were lower (33 v. 56 bites/min) and grazing times higher (11.7 v. 6.0 h) on sward A than swards B and C. The poorer performance of hinds and their calves on sward A was considered to be due to a lower quality of diet ingested, and to behavioural limitations on intake occurring when hinds graze indigenous swards of relatively high species diversity. These results are discussed in relation to the grazing behaviour of cattle and sheep on similar swards.

The significance of the results to red deer farming in the U.K. is briefly discussed.

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R. H. Alexander & M. McGowan (1966). The routine determination of in vitro digestibility of organic matter in forages – an investigation of the problems associated with continuous large-scale operation. Journal of the British Grassland Society 21, 140147.

W. G. Allden & I. A. McD. Whittaker (1970). The determinants of herbage intake by grazing sheep: the interrelationship of factors influencing herbage intake and availability. Australian Journal of Agricultural Research 21, 755766.

P. Arman , R. N. B. Kay , G. D. Good All & G. A. M. Sharman (1974). The composition and yield of milk from captive red deer (Cervus elaphus L.). Journal of Reproduction and Fertility 37, 6784.

A. R. M. Chambers , J. Hodgson & J. A. Milne (1981). The development and use of equipment for the automatic recording of ingestive behaviour in sheep and cattle. Grass and Forage Science 36, 97105.

S. A. Grant , W. J. Hamilton & C. Souter (1981). The responses of heather-dominated vegetation in north-east Scotland to grazing by red deer. Journal of Applied Ecology 69, 189204.

R. F. Hunter (1962). Hill sheep and their pasture: a study of sheep grazing in south-east Scotland. Journal of Ecology 50, 651680.

R. W. Kelly & K. R. Drew (1976). Shelter-seeking and suckling behaviour of the red deer calf (Cervus elaphus) in a farmed situation. Applied Animal Ethology 2, 101111.

A. Kryzwinski , K. Krywinska , J. Kisza , A. Roskosz , & A. Kruk (1981). Milk consumption, lactation and the artificial rearing of red deer. Acta Theriologica 25, 341347.

A.S.I. Loudon , A. S. McNeilly & J. A. Milne (1983). Nutrition, milk yield and suckling behaviour in red deer: implications for lactational control of fertility. Nature, London 302, 145147.

J. A. Milne , L. Bagley & S. A. Grant (1979). Effect of season and level of grazing on the utilisation of heather by sheep. 2. Diet selection and intake by sheep. Grass and Forage Science 34, 4553.

R. M. F. S. Saddleir (1980). Energy and protein intake in relation to growth of suckling black-tailed deer fawns. Canadian Journal of Zoology 58, 13471354.

B. Staines (1978). The dynamics and performance of a declining population of red deer (Cervus elaphus). Journal of Zoology 184, 403419.

J. M. A. Tilley & R. A. Terry (1963). A two stage technique for the in vitro digestion of forage crops. Journal of the British Grassland Society 18, 104111.

J. Trudeli & R. G. White (1981). The effect of forage structure and availability on food intake, biting rate, bite size and daily foraging time of reindeer. Journal of Applied Ecology 18, 6381.

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The Journal of Agricultural Science
  • ISSN: 0021-8596
  • EISSN: 1469-5146
  • URL: /core/journals/journal-of-agricultural-science
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