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Effect of supplemental feed in early lactation of Arabi ewes on wool and lamb growth

Published online by Cambridge University Press:  23 November 2017

N Dabiri
N Dabiri*
Affiliation:
Ramin Agricultural University, Ahwaz, Khuzestan, Iran
*
Email: [email protected]
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Extract

The growth rate of Arabi lamb during the suckling period (from birth to weaning at about day 100) is very slow particularly for lambs born in the autumn (Dabiri, 1999). Poor quality and limited quantity of feed for lactating ewes in free grazing system was shown to limit milk production, which was the main reason for slow lamb growth (Dabiri and Mosavi 2000). On the other hand, in conventional Iranian sheep production systems, offering a limited quantity of low quality supplemental (Sup) feed (or even no supplemental feed) to the lactating ewes was an important factor for severe reduction of the growth rate of the wool of lactating ewes during the autumn season (Dabiri, 2002). It was hypothesized that offering a high quality supplemental feed to ewes for a short period during early lactation would improve the growth rate of lambs and may alleviate the poor wool growth rate of lactating ewes during the autumn season. Therefore, the aims of this experiment were to 1) compare the growth of lambs suckled from experimental supplemented ewes with the growth of lambs suckled from conventionally ewes, and 2) compare the wool growth of lactating (wet) ewes with non-lactating (dry) ewes during autumn season

Type
Poster presentations
Information
Proceedings of the British Society of Animal Science , Volume 2006 , March 2006 , pp. 158
Copyright
Copyright © 2016 The American Society of International Law

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References

Dabiri, N. 1999. Effects of pre-lamb shearing on birth and weaning weight of lamb in Arabi breed ewes. The Scientific Journal of Agriculture. 21: 51-62.Google Scholar
Dabiri, N. and Mosavi, S. 2000. Estimation of correction factor for birth weight and live weights of 1, 3, 6, 8 and 12 months old of Arabi lamb. Final Report of Project No 281 for Shahid Chamran University, Ahwaz, Iran. 29P.Google Scholar
Dabiri, N. 2002. Effect of age and some physiological state on seasonal wool growth and fiber diameter of Arabi breed sheep in south west of Iran. Journal of Animal Science 80: 1: 76-77.Google Scholar
NRC. 1985. Nutrient requirements of sheep. National Academy Press, Washington, DC.Google Scholar