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The lactation of Persian Blackhead ewes and the growth of lambs: The effect of three different nutritional regimes during gestation on subsequent growth

Published online by Cambridge University Press:  27 March 2009

M. H. Butterworth  and
T. W. D. Blore
M. H. Butterworth
Affiliation:
Faculty of Agriculture, Imperial College of Tropical Agriculture, University of the West Indies, Trinidad
T. W. D. Blore
Affiliation:
Faculty of Agriculture, Imperial College of Tropical Agriculture, University of the West Indies, Trinidad
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Summary

Forty-two Persian Blackhead ewes were used to investigate the effect of three prenatal planes of nutrition 6 weeks before lambing on birth weights and weights at 4 and 12 weeks after birth of their progeny. Nutritional regimes were: good grazing with concentrate supplement (high), good grazing without supplement (medium) and poor grazing without supplement (low). Pastures used were rotationally grazed Pangola grass. High-plane ewes gained significantly more weight during the last 6 weeks of gestation than ewes of the other two groups. Ewes nursing twin lambs lost significantly more weight than ewes nursing singles during the first 4 weeks of lactation. Birth weights of male single lambs and lambs from mature ewes were significantly affected by the prenatal plane of nutrition of the ewe. Lambs from mature ewes weighed significantly more than lambs from maiden ewes and male lambs weighed significantly more than females. Live-weight gains to 4 weeks were significantly affected by prenatal plane of nutrition in all cases. Type of birth was an important factor affecting growth rate and maturity of the ewe less so. Male lambs gained more weight than females during this period. Similar tendencies were apparent during the growth period of 4–12 weeks after birth although rate of gain was lower.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 73 , Issue 1 , August 1969 , pp. 133 - 137
Copyright
Copyright © Cambridge University Press 1969

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References

REFERENCES

Barnicoat, C. R., Logan, A. G. & Grant, A. I. (1949). Milk secretion studies with New Zealand Romney ewes. Parts I and II. J. agric. Sci., Camb. 39, 44–5.Google Scholar
Barnicoat, C. R., Murray, P. F., Roberts, E. M. & Wilson, G. S. (1956). Milk secretion studies with New Zealand Romnoy ewes. Parts V–XI. J. agric. Sci., Camb. 48, 9–35.Google Scholar
Bonsma, F. N. (1939). Factors influencing the growth and development of lambs with special reference to cross-breeding of Merino sheep for fat lamb production in South Africa. Publ. Univ. Pretoria (series 1, agric.), no. 48, 214 pp.Google Scholar
Butterworth, M. H., Houghton, T. R., McCartney, J. C., Prior, A. J., Middlemiss, C. P. & Edmond, D. E. (1968). Somo observations on the lactation of Blackhead ewes and tho growth of lambs: the composition and yield of milk. J. agric. Sci., Camb. 70, 203.Google Scholar
Coop, I. E. (1950). The effect of level of nutrition during pregnancy and during lactation on lamb and wool production of grazing sheep. J. agric. Sci., Camb. 40, 311–40.Google Scholar
Curson, H. H. & Malan, A. P. (1935). The changing proportions of the Merino lamb from the second to the fifth month of prenatal life. Onderstepoort J. vet. Sci. 4, 481–92.Google Scholar
Guyer, P. Q. & Dyer, A. J. (1954). Study of factors affecting sheep production. Bull. Miss agric. Exp. Stn., p. 558. 74 pp.Google Scholar
Papadopoulos, J. C. & Robinson, T. J. (1957). Fat lamb studies in Victoria. II. The interaction between pre- and postnatal planes of nutrition on the production of wool and lambs by cross-breed sheep. Aust. J. agric. Res. 8, 471–93.CrossRefGoogle Scholar
Peart, J. N. (1967). The effect of different levels of nutrition during late pregnancy on the subsequent milk production of Blackface ewes and on the growth of their lambs. J. agric. Sci., Camb. 68, 365–71.Google Scholar
Peart, J. N. (1968). Some effects of live weight and body condition on the milk production of Blackface ewes. J. agric. Sci., Camb. 70, 331–8.Google Scholar
Thomson, W. & Thomson, A. M. (1953). Effect of diet on the milk yield of the ewe and growth of her lamb. Brit. J. Nutr. 7, 263–74.Google Scholar
Wallace, L. R. (1948). The growth of lambs before and after birth in relation to the level of nutrition. J. agric. Sci., Camb. 38, 93–153, 243–302, 367–401.CrossRefGoogle Scholar