The effect of including argane by-products (meal and pulp) in dairy ewe diet on milk quality and production, and lamb growth performance


The objective of this work was to study the effect of the incorporation of argane by-products (meal and pulp) in ewe’s diet on the production and quality of milk and the performance of lambs in the lactation phase. Twenty ewes were divided into two equal groups. The first one has been fed with argane by-product diet (AD), and the second with a control diet (CD). The results showed an improvement in milk production with an average of 26.3% for AD compared with the CD group. AD group lambs showed a significant difference (p < 0.05) compared with the CD group during lactation phase. The ash and protein levels were not affected by treatments; however, fat, lactose, density, and fusion point content show more fluctuations for both treatments (p < 0.05). The physicochemical parameters of sheep milk showed high (p < 0.01) to very high (p < 0.001) significant change, along the lactation weeks. Except the Zn which showed no significant difference (p > 0.05), the mineral composition of both milks (Na, K, Ca, Mg, P, and Fe) was significant (p < 0.05). It is concluded that, in terms of performances, argane by-products could replace the conventional diet for ewes without substantial detrimental effects. Therefore, argane by-product could be used as a cost-effective feed for sheep in dry areas.

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Appreciation is expressed to farmer Omar Dahman for the facilities provided for the experiment. Acknowledgement is also uttered to Abdenbi Saidi for assistance in conducting this study and laboratory analysis.


This study was financially supported by the National Institute of Agronomic Research.

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Correspondence to Sana Moutik or Nour Eddine Es-Safi.

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Moutik, S., Lakram, N., Bendaou, M. et al. The effect of including argane by-products (meal and pulp) in dairy ewe diet on milk quality and production, and lamb growth performance. Trop Anim Health Prod 51, 2437–2445 (2019).

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  • Argane by-products
  • Ewe
  • Lambs
  • Meal
  • Milk
  • Pulp