The aim of this study was to investigate the effect of hempseed cake on production traits, metabolic profile and antioxidant status of lambs. The research was conducted on 20 Merinolandschaf lambs of similar live body weight (24.03 kg ± 2.22 and 24.06 ± 1.84 kg in control and experimental group, respectively). The experiment started after the weaning of lambs at their average age of 70 days. Lambs were divided by gender (50% male: 50% female) and then allocated in two groups. The research lasted for 30 days during the fattening period. Lambs in the control group were fed with feed mixtures, where main protein source was soybean meal and extruded soybean (SB), while lambs in the experimental group were fed feed mixtures in which soybean was replaced by hempseed cake (HSC) at 12% of dry matter. Higher values of daily weight gain (P<0.05) compared to SB lambs were observed from the 15^th to 30^th day. HSC lambs showed no significant differences in hematology and biochemical blood parameters, except for lower (P<0.001) urea concentrations on days 15^th and 30^th, as well as higher (P<0.05) Mg concentrations in serum on the 30^th day. Hempseed cake in lambs′ diets did not influence (P>0.05) activity of the enzymes, like AST, ALT, ALP, GGT and CK, as well as SOD and GPx enzymes, thus not affecting the antioxidant status of lambs′ blood. Concentrations of DHA and n-3 fatty acids were higher (P<0.05) in HSC group than in SB group. The present study confirmed that the inclusion of HSC as soybean replacement up to 12% in the lambs’ diet is justified when considering production traits, metabolic profile and antioxidant status of Merinolandschaf lambs.

中文翻译：

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麻饼对美利奴羊羔羊羔的生产性状，代谢特性和抗氧化状态的影响

这项研究的目的是调查麻饼对羔羊生产性状，代谢特性和抗氧化状态的影响。这项研究是对20只活体重相似的Merinolandschaf羔羊（对照组和实验组分别为24.03 kg±2.22和24.06±1.84 kg）进行的。实验是在平均年龄为70天的羔羊断奶之后开始的。将羔羊按性别划分（男性占50％：女性占50％），然后分成两组。在育肥期间，研究持续了30天。对照组的羔羊饲喂混合饲料，其中主要的蛋白质来源是豆粕和膨化大豆（SB），而实验组的羔羊饲喂混合饲料，其中大豆被12％的麻饼（HSC）代替干物质。每日体重增加值较高（P <0。^第30天到^第30天。HSC羊羔显示出在血液学和除了降低（P <0.001）脲天15无浓度差异显著血生化参数，^第30^日，以及更高（P <0.05）的Mg浓度在血清在30^日天。羔羊日粮中的大麻饼不影响AST，ALT，ALP，GGT和CK等酶以及SOD和GPx酶的活性（P> 0.05），因此不影响羔羊血液的抗氧化剂状态。HSC组中DHA和n-3脂肪酸的浓度高于SB组（P <0.05）。本研究证实，考虑到美利奴羊羔的生产特性，代谢特性和抗氧化状态，在羔羊的日粮中添加高达12％的HSC作为大豆替代品是合理的。