The Effect of Spirulina Supplementation into the Basal Diet on the Productivity and Environmental Cost of Thin-tailed Lambs Fattening

Authors

• Nadlirotun Luthfi, Department of Animal Science, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Semarang, IndonesiaFollow
• Edy Rianto, Department of Animal Science, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Semarang, IndonesiaFollow
• Sutaryo Sutaryo, Department of Animal Science, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Semarang, IndonesiaFollow
• Endang Purbowati, Department of Animal Science, Faculty of Animal and Agricultural Sciences, Universitas Diponegoro, Semarang, IndonesiaFollow
• Hasna Fajar Suryani, Department of Animal Science, Faculty of Animal Husbandry, University of Darul Ulum Islamic Centre Sudirman, Semarang Regency, IndonesiaFollow

Abstract

Spirulina platensis is a supplement that has a good impact on the growth performance of lambs, but information about the amount of this substance in feed efficiency and environmental impact is still required to be determined. The study aimed to examine the effect of the supplementation level of Spirulina platensis in the basal diet on the productivity and environmental costs of Thin-tailed lambs fattening. Twenty-four male lambs (aged 4 months; weighing 14.99 kg) were allocated to a completely randomized design with 4 treatments and six replications in each treatment. The treatments were 1) 100% basal diet without Spirulina supplementation (T0); 2) 99.5% basal diet + 0.5% Spirulina platensis supplementation (T1); 3) 99.0% basal diet + 1.0% Spirulina platensis supplementation (T2); and 4) 98.5% basal diet + 1.5% Spirulina platensis supplementation (T3). The parameters observed were dry matter intake (DMI), nutrient utilization, rumen fluid and blood profile, productivity, feed cost and nitrogen excretion and methane emission. The results showed that DMI of T3 was the highest among the treatments (985.66 g/d; p < 0.05). Retained protein of T2 (70.82 g/d) and T3 (72.49) was similar (p>0.05) and higher than that of others (p < 0.05). Acetic, propionic and butyric acids 3h after feeding in T3 were higher (p < 0.05) than those of the others (178. 21 mMol, 69.82 mMol and 12.42 mMol, respectively). Lambs fed T2 and T3 were similar (averaged 186.7 g/d; p>0.05) in average daily gain (ADG) and higher than that of the others. Feed conversion ratio (FCR) of T2 (4.74) was not significantly different from T3 (p > 0.05) but higher (p < 0.05) than that of T0 and T1, while T0, T1 and T3 were not significantly different (p > 0.05). Feed cost per gain (FC/G) of T2 (Rp 31,996/kgADG) was the lowest (p < 0.05) among the others. Nitrogen excretion per kg ADG of T2 and T3 was similar (p > 0.05; averaged 0.035 g/kgADG) and lower (p < 0.05) than that of T0 and T1. Methane emission per kg ADG of T2 (11.52 L/ADG) was the lowest (p < 0.05) among the other treatments. In conclusion, the supplementation of Spirulina platensis up to 1% (T2) increased productivity, reduced feed cost and environmental cost of Thin-tailed lambs production.

Keywords

Diet, Environmental cost, Lambs, Nutrient utilization, Productivity, Spirulina

Subject Area

Biology

Article Type

Article

First Page

1635

Last Page

1646

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite this Article

Luthfi, Nadlirotun; Rianto, Edy; Sutaryo, Sutaryo; Purbowati, Endang; and Suryani, Hasna Fajar (2026) "The Effect of Spirulina Supplementation into the Basal Diet on the Productivity and Environmental Cost of Thin-tailed Lambs Fattening," Baghdad Science Journal: Vol. 23: Iss. 5, Article 8.
DOI: https://doi.org/10.21123/2411-7986.5292