The effect of including argane by-products (meal and pulp) in dairy ewe diet on milk quality and production, and lamb gr
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The effect of including argane by-products (meal and pulp) in dairy ewe diet on milk quality and production, and lamb growth performance Sana Moutik 1,2 & Nazha Lakram 3 & Mohammed Bendaou 2 & El Haj Maadoudi 2 & Mohammed Rachid Kabbour 2 & Ahmed Douaik 2 & Abdelmajid Zouahri 2 & Abdellah El Housni 2 & Nour Eddine Es-Safi 1 Received: 21 June 2018 / Revised: 22 May 2019 / Accepted: 24 May 2019 # Springer Nature B.V. 2019
Abstract 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 costeffective feed for sheep in dry areas. Keywords Argane by-products . Ewe . Lambs . Meal . Milk . Pulp
Introduction Sheep farming plays a major socio-economic role in Morocco. This livestock is considered one of the main sources of income for farmers. However, due to the succession of drought years and the rising of raw material prices in the international market, ruminants suffer from acute food problems. This situation has led to excessive use pastoral areas possibly because of bad * Sana Moutik [email protected] * Nour Eddine Es-Safi [email protected] 1
Mohammed V University in Rabat, LPCMIO, Materials Science Center (MSC), Ecole Normale Supérieure, Rabat, Morocco
2
Rabat Institutes, INRA, CRRA-Rabat, P.O. Box 6570, 10101 Rabat, Morocco
3
Laboratory of Zoology and General Biology, Faculty of Sciences, Mohammed V University in Rabat, Ibn Battuta 4 Avenue, P.O. Box 1014, Rabat, Morocco
pasture management, and consequently, a degradation and decrease of the forage availability on the rangelands. As a result, pastoralists were confronted with a change in the traditional food system based primarily on the contribution of rangelands to a system based on concentrate supplementation (Jorfi et al. 2014). However, this high dependence on concentrated foods can affect the profitability and sustainability of the farms. Faced to th
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