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A note on the effect of level of nutrition after weaning on the resumption of reproductive activity by ewes of two Spanish breeds lambing in spring

Published online by Cambridge University Press:  02 September 2010

J. A. Abecia ,
F. Forcada  and
L. Zarazaga
J. A. Abecia
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Miguel Servet 177, 50.013 Zaragoza, Spain
F. Forcada
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Miguel Servet 177, 50.013 Zaragoza, Spain
L. Zarazaga
Affiliation:
Departamento de Producción Animal y Ciencia de los Alimentos, Facultad de Veterinaria, Miguel Servet 177, 50.013 Zaragoza, Spain
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Abstract

Two experiments were carried out from April to September 1990 at Zaragoza, Spain. Fifty-three Rasa Aragonesa (RA) ewes, weaned in April, were studied in experiment 1, whilst 33 Salz (Sz) ewes, weaned in June, were studied in experiment 2. From weaning onwards, the animals were allocated to two groups receiving two planes of nutrition: high (H) and low (L). Mean time between weaning and the first detected oestrus was 113 (s.e. 2·7) and 52 (s.e. 3·0) days for RA and Sz ewes, without any significant effect of the plane of nutrition. Ewes of the H group showed a constantly higher ovulation rate than those of the L group with a significant effect of the plane of nutrition in the second fortnight of August (P < 0·05) and of September (P < 0·001) in RA ewes (1·68 v. 1·29 and 1·89 v. 1·38 corpora lutea for H and L groups, respectively) and in September (P < 0·01) in Sz ewes (2·53 v. 2·00 corpora lutea for H and L groups).

In conclusion, a slightly higher plane of nutrition after weaning in these sheep breeds, lambing in spring, cannot advance either the reproductive resumption or increase the ovulation rate of the first cycle. The high plane of nutrition after weaning exerts a significant effect on the ovulation rate in the medium term, in the early breeding season.

Keywords

ewesnutritionoestrusovulation rate
Type
Research Article
Information
Animal Production , Volume 56 , Issue 2 , April 1993 , pp. 273 - 276
Copyright
Copyright © British Society of Animal Science 1993

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References

Agricultural Research Council. 1980. The nutrient requirements of ruminant livestock. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Forcada, F., Abecia, J. A. and Sierra, I. 1992. Seasonal changes in oestrus activity and ovulation rate in Rasa Aragonesa ewes maintained at two different body condition levels. Small Ruminant Research 8: 313–324.CrossRefGoogle Scholar
Gabina, D. 1989. Improvement of the reproductive performance of Rasa Aragonesa flocks in frequent lambing systems. I. Effects of management system, age of ewe and season. Livestock Production Science 22: 69–85.CrossRefGoogle Scholar
Gunn, R. G. 1986. A note on the comparative reproductive performance of Friesland × North Country Cheviot and North Country Cheviot ewes on two levels of pasture prior to mating. Animal Production 42: 287–289.Google Scholar
Gunn, R. G., Maxwell, T. J., Sim, D. A., Jones, J. R. and James, M. E. 1991. The effect of level of nutrition prior to mating on the reproductive performance of ewes of two Welsh breeds in different levels of body condition. Animal Production 52:157–163.Google Scholar
Haresign, W. 1981. The influence of nutrition on reproduction in the ewe. 1. Effects on ovulation rate, follicle development and luteinizing hormone release. Animal Production 32: 197–202.Google Scholar
Montgomery, G. W., Scott, I. C. and Johnstone, P. D. 1988. Seasonal changes in ovulation rate in Coopworth ewes maintained at different live weights. Animal Reproduction Science 17:197–205.CrossRefGoogle Scholar
Quirke, J. F., Stabenfeld, G. H. and Bradford, G. E. 1983. Resumption of ovarian function in autumn lambing Dorset, Rambouillet and Finnish Landrace ewes. Therioyenology 19: 243–248.CrossRefGoogle ScholarPubMed
Quirke, J. F., Hanrahan, J. P., Loughnane, W. and Triggs, R. 1986. Components of the breeding and non-breeding season in sheep: breed effects and repeatability. Irish journal of Agricultural Research 25: 167–172.Google Scholar
Rhind, S. M., Robinson, J. J., Chesworth, J. M. and Phillippo, M. 1980. Effect of season, lactation and plane of nutrition on the reproductive performances and associated plasma LH and progesterone profiles in hormonally treated ewes. Journal of Reproduction and Fertility 58: 127–137.CrossRefGoogle ScholarPubMed
Rhind, S. M. and McNeilly, A. S. 1986. Follicle populations, ovulation rates and plasma profiles of LH, FSH and prolactin in Scottish Blackface ewes in high and low levels of body condition. Animal Reproduction Science 10: 105–115.CrossRefGoogle Scholar
Rhind, S. M., McMillen, S. and McKelvey, W. A. C. 1991. Effects of levels of food intake and body condition on the sensitivity of the hypothalamus and pituitary to ovarian steroid feedback in ovariectomized ewes. Animal Production 52: 115–125.Google Scholar
Russel, A. F. J., Doney, J. M. and Gunn, R. G. 1969. Subjective assessment of body fat in live sheep. Journal of Agricultural Science, Cambridge 72: 451–454.CrossRefGoogle Scholar
Schirar, A., Cognie, Y., Louault, F., Poulin, N., Levesseur, M. C. and Martinet, J. 1989. Resumption of oestrous behaviour and cyclic ovarian activity in suckling and non- suckling ewes. Journal of Reproduction and Fertility 87: 789–794.CrossRefGoogle ScholarPubMed
Sierra, I. 1982. [Development of a synthetic dam line between Romanov and Rasa Aragonesa.] Zootechnia XXXI: (1–2) 14–20.Google Scholar
Smith, J. F. 1985. Protein, energy and ovulation rate. In Genetics of reproduction in sheep (ed. Land, R. B. and Robinson, J. J.), pp. 349–359. Butterworths, London.CrossRefGoogle Scholar
Vails, M., Cognie, Y., Valdemoro, M. D. and Hallaver, J. 1977 [Romanov and Finnish crosses with Rasa Aragonesa. Effect on growing and reproduction.] Información Técnico Económica Agraria 26: 25–30.Google Scholar
Visscher, A. H. 1987. Length of breeding season of Finnish Landrace and Ile-de-France ewes. Proceedings of the thirty eighth annual meeting of the European Association for Animal Production, vol. 2, p. 920 (abstr.).Google Scholar
Whiteman, J. V., Zollinger, W. A., Thrift, F. A. and Gould, M. B. 1972. Post-partum mating performance of ewes involved a twice yearly lambing program. Journal of Animal Science 35: 836–842.CrossRefGoogle Scholar
Xu, Z. Z., McDonald, M. F. and McCutcheon, S. N. 1989. The effect of nutritionally-induced liveweight differences on follicular development, ovulation rate, oestrus activity and plasma follicle-stimulating hormone levels in the ewe. Animal Reproduction Science 19: 67–78.CrossRefGoogle Scholar