Department of Biology, College of Sciences and Arts in Unayzah, Qassim University, Buraydah, Kingdom of Saudi Arabia.
Department of Animal and Poultry Production, Faculty of Agriculture, Damanhour University, Damanhur, Egypt.
Open Vet J. 2023 Jun;13(6):772-781. doi: 10.5455/OVJ.2023.v13.i6.12. Epub 2023 Jun 19.
The fertility and genetic value of the flock can be enhanced by selecting lambs with highly developed early puberty characteristics. Spirulina (SP) has been evaluated as a natural product supplement to boost lamb growth, immunity, and productivity.
Study growth performance, blood metabolites, puberty development traits, semen quality, and seminal plasma biochemical concentrations of growing Barki lambs when supplemented with SP at different levels.
in a 24 weeks study, 30 Barki male lambs weighing an average of 21.78 ± 2.56 kg, with a body condition score of 3.20 ± 0.55 and an age of about 16 ± 0.24 weeks were used. The lambs were randomly assigned to three groups (10 lambs each) of daily SP supplementation levels per lamb of 0 ml (control), 50 ml (SP1), and 100 ml (SP2). The SP powder was made into a water suspension using SP to water ratio of 1 g:10 ml. The growth characteristics, as well as the development of puberty, blood metabolites, and semen quality analysis of every lamb, were measured.
The growth performance was greater ( < 0.05) in SP2 lambs compared with other lambs. While daily dry matter intake was not affected by SP treatment, feed efficiency had significantly improved in SP2 groups. Furthermore, the SP2 lambs have attained puberty at early ages than the control lambs. The testes volume of SP2 lambs was bigger ( < 0.05) than other groups throughout the pre-pubertal up to the puberty stage. The addition of SP had no effects on the total protein, glucose, and triglycerides concentrations. Meanwhile, the cholesterol concentration was lowest ( < 0.05) in the SP2 lambs. The blood and seminal plasma levels of alanine aminotransferase and aspartate aminotransferase decreased ( < 0.05) in the SP lambs more than their control counterparts. The levels of superoxide dismutase reduced glutathione, and total antioxidants had increased ( < 0.05) in the treated lambs compared with the control group. Further, the malondialdehyde levels decreased ( < 0.05) in the SP-treated lambs. Additionally, the SP2 lambs produced better semen quality than the control lambs.
SP supplementation (100 ml/head/day) enhanced growth performance, feed efficiency, and antioxidative status, exerting a positive influence on the physiological parameters and sexual behavioral patterns at puberty in Barki lambs.
通过选择具有早期发情特征的羔羊，可以提高羊群的繁殖力和遗传价值。螺旋藻（SP）已被评估为一种天然产物补充剂，可促进羔羊生长、免疫力和生产力。
研究不同水平 SP 补充对生长巴克里羔羊生长性能、血液代谢物、发情发育特征、精液质量和精液生化浓度的影响。
在 24 周的研究中，使用 30 只平均体重为 21.78 ± 2.56 kg、体况评分 3.20 ± 0.55、年龄约为 16 ± 0.24 周的雄性巴克里羔羊。羔羊随机分为三组（每组 10 只），每日每只 SP 补充水平分别为 0 ml（对照）、50 ml（SP1）和 100 ml（SP2）。将 SP 粉与水按 1 g：10 ml 的比例制成水悬浮液。测量每只羔羊的生长特性、发情发育、血液代谢物和精液质量分析。
SP2 组羔羊的生长性能（<0.05）大于其他组。虽然 SP 处理对干物质日摄入量没有影响，但 SP2 组的饲料效率显著提高。此外，SP2 组羔羊的发情年龄比对照组羔羊早。在整个青春期前到青春期阶段，SP2 组羔羊的睾丸体积大于其他组。SP 添加对总蛋白、葡萄糖和甘油三酯浓度没有影响。同时，SP2 组羔羊的胆固醇浓度最低（<0.05）。血液和精液中丙氨酸氨基转移酶和天冬氨酸氨基转移酶水平（<0.05）在 SP 处理的羔羊中比对照羔羊下降。超氧化物歧化酶、还原型谷胱甘肽和总抗氧化剂水平（<0.05）在处理组羔羊中比对照组羔羊升高。此外，SP 处理的羔羊的丙二醛水平（<0.05）降低。此外，SP2 组羔羊的精液质量优于对照组羔羊。
SP 补充（100 ml/头/天）可提高生长性能、饲料效率和抗氧化状态，对巴克里羔羊的生理参数和发情行为模式产生积极影响。
