Abstract
BackgroundOne of the important by-products is sesame seed meal; it is a by-product of sesame seed pressing. Sesame oil cake or meal is a relatively good source of crude protein which can replace part of basic ingredients in diets such as soybean.MethodFifteen growing male Barki lambs aged 5–6 months (18.50 ± 0.98 kg) were used to investigate the influence of replacing soybean meal (SBM) that incorporated (16% of control ration) sesame meal (SM) at 50% or 100% on feed and water intakes, nutrient digestibility, growth performance, rumen parameters, and economic evaluation. Lambs received one of the three tested complete feed mixtures that contained 16% SBM (R1), replaced 50% of SBM with SM (R2), contained (8% SBM + 8% SM) or completely replaced 100% of SBM with SM (R3) and contained 16% SM.ResultsDietary treatments had no significant effect on all nutrient digestibility and total digestible nutrients value, meanwhile it decreased (P < 0.05) their contents of digestable crud protine when SBM was completely replaced by SM. Average daily gain (ADG) increased (P < 0.05) while increasing the level of replacement SBM by SM. Feed conversion expressed as g. gain improved (P < 0.05) with the increasing level of inclusion SM in the rations. Ruminal pH values increased (P < 0.05), meanwhile, values of NH3-N concentration insignificantly decreased; however, values of total volatile fatty acid concentration insignificantly increased when SBM was replaced at half or completely by SM. Economical efficiency improved by 147.9% and 163.5% for R2 and R3 compared to control (R1).ConclusionIt can be mentioned that SM is a good source of protein and can be successfully used as an unconventional source in growing lamb rations without causing any deleterious effect on their performance, digestibility, and ruminal fermentation while realizing a decrease in feed cost with improving economic efficiency, so it can incorporate SM in sheep rations to improve profitability or net revenue and decrease feed cost/kg gain.
Highlights
One of the important by-products is sesame seed meal; it is a by-product of sesame seed pressing
It can be mentioned that sesame meal (SM) is a good source of protein and can be successfully used as an unconventional source in growing lamb rations without causing any deleterious effect on their performance, digestibility, and ruminal fermentation while realizing a decrease in feed cost with improving economic efficiency, so it can incorporate SM in sheep rations to improve profitability or net revenue and decrease feed cost/kg gain
SSM was superior in their contents of Ether extract (EE), hemicellulose, and cellulose (5.43, 13.94, and 21.59%, respectively) in comparison with the soybean meal (SBM)
Summary
One of the important by-products is sesame seed meal; it is a by-product of sesame seed pressing. Sesame oil cake or meal is a relatively good source of crude protein which can replace part of basic ingredients in diets such as soybean. The feedstuff market is suffering from price fluctuations and quite often availability problems (Stillman et al 2009; Lawrence et al 2010; Nikolakakis et al 2014). These detrimental situations are usually observed for high-protein feed such as soybean meal (Indexmundi 2016a), but they can be observed for cereals such as maize (Indexmundi 2016b), barley (Indexmundi 2016c), and other feed ingredients. The sesame seeds contain on average 44–58% oil, 18–25% crude protein, 13.5% carbohydrates, and 5% ash (Yoshida et al 1995; Mohammed and Awatif 1998; Kahyaoglu and Kaya 2006; Elleuch et al 2007)
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