The in vitro energy and enteric methane values of three microalgae species for ruminants

Nagehan Nur Altan; Muazzez Acar

Article Details

The in vitro energy and enteric methane values of three microalgae species for ruminants

Authors:

Nagehan Nur Altan | Muazzez Acar

Publisher:

Ege University

Main Topics:

Hayvan Besleme | Hayvan Beslenmesi

Journal:

Ege Üniversitesi Ziraat Fakültesi Dergisi Vol.62 Issue 2, pp.163-172

Document Type:

Article

Publication Date:

6/2025

Document Language:

English

Document ID (Org No.):

2001351365

pISSN:

1018-8851

Keywords:

Abstract:

 Objective: The aim of the study was to determine the in vitro energy and enteric methane values of the three microalgae Spirulina platensis SPTS, Chlorella vulgaris CVGS and Schizochytrium spp. SSPP species by in vitro Gas Production Technique. Materials and Method: The gas production GP of the microalgae were found based on 3, 6, 9, 12, 24, 48 and 72 hours incubation period. The IVOMD In Vitro Organic Matter Digestibility, ME Metabolic Energy and NEL Net Energy Lactation values were calculated by using 24-hours gas production and some crude nutrient contents. The CH4VFA Methane volatile fatty acids were found from volatile fatty acids VFA profiles of 48-hours of incubation residues. Results: For each microalgae, the differences between the IVOMD and NEL values were significant P0.05. The differences between IVOMD and NEL values were similar in SPTS and CVGS which were significantly higher than SSPP 31.10 DM , 1010 kcalkg P0.05. The VFA and CH4 VFA were found to be highest in CVGS and similar to each other in SPTS and SSPP. Although the CH4VFA values of SPTS and SPSS were similar to each other, the CH4VFA value of SSPP 0.70 molmol VFA was found to be the lowest. Conclusion: If it is produced economically, it may be recommended that CVGS can be used as an alternative feed source in ruminant nutrition due to high energy, crude protein and VFA concentrations, while SPTS and SSPP can be used as feed additives due to their low VFA and CH4VFA concentrations.

 Objective: The aim of the study was to determine the in vitro energy and enteric methane values of the three microalgae Spirulina platensis SPTS, Chlorella vulgaris CVGS and Schizochytrium spp. SSPP species by in vitro Gas Production Technique. Materials and Method: The gas production GP of the microalgae were found based on 3, 6, 9, 12, 24, 48 and 72 hours incubation period. The IVOMD In Vitro Organic Matter Digestibility, ME Metabolic Energy and NEL Net Energy Lactation values were calculated by using 24-hours gas production and some crude nutrient contents. The CH4VFA Methane volatile fatty acids were found from volatile fatty acids VFA profiles of 48-hours of incubation residues. Results: For each microalgae, the differences between the IVOMD and NEL values were significant P0.05. The differences between IVOMD and NEL values were similar in SPTS and CVGS which were significantly higher than SSPP 31.10 DM , 1010 kcalkg P0.05. The VFA and CH4 VFA were found to be highest in CVGS and similar to each other in SPTS and SSPP. Although the CH4VFA values of SPTS and SPSS were similar to each other, the CH4VFA value of SSPP 0.70 molmol VFA was found to be the lowest. Conclusion: If it is produced economically, it may be recommended that CVGS can be used as an alternative feed source in ruminant nutrition due to high energy, crude protein and VFA concentrations, while SPTS and SSPP can be used as feed additives due to their low VFA and CH4VFA concentrations.

 Objective: The aim of the study was to determine the in vitro energy and enteric methane values of the three microalgae Spirulina platensis SPTS, Chlorella vulgaris CVGS and Schizochytrium spp. SSPP species by in vitro Gas Production Technique. Materials and Method: The gas production GP of the microalgae were found based on 3, 6, 9, 12, 24, 48 and 72 hours incubation period. The IVOMD In Vitro Organic Matter Digestibility, ME Metabolic Energy and NEL Net Energy Lactation values were calculated by using 24-hours gas production and some crude nutrient contents. The CH4VFA Methane volatile fatty acids were found from volatile fatty acids VFA profiles of 48-hours of incubation residues. Results: For each microalgae, the differences between the IVOMD and NEL values were significant P0.05. The differences between IVOMD and NEL values were similar in SPTS and CVGS which were significantly higher than SSPP 31.10 DM , 1010 kcalkg P0.05. The VFA and CH4 VFA were found to be highest in CVGS and similar to each other in SPTS and SSPP. Although the CH4VFA values of SPTS and SPSS were similar to each other, the CH4VFA value of SSPP 0.70 molmol VFA was found to be the lowest. Conclusion: If it is produced economically, it may be recommended that CVGS can be used as an alternative feed source in ruminant nutrition due to high energy, crude protein and VFA concentrations, while SPTS and SSPP can be used as feed additives due to their low VFA and CH4VFA concentrations.

 Amaç: Bu çalışmanın amacı, üç mikroalg türünün Spirulina platensis SPTS, Chlorella vulgaris CVGS ve Schizochytrium spp. SSPP in vitro enerji ve enterik metan değerlerinin in vitro Gaz Üretim Tekniği ile belirlenmesidir. Materyal ve Yöntem: Mikroalglerin 3, 6, 9, 12, 24, 48 ve 72 saatlik gaz üretimleri GÜ, IVOMD In Vitro Organik Madde Sindirilebilirliği, ME Metabolik Enerji, NEL Net Enerji Laktasyon değerleri; 24 saatlik gaz üretimi ve bazı ham besin içerikleri kullanılarak hesaplanmıştır. Ayrıca, CH4VFA Metan uçucu yağ asitleri, uçucu yağ asitleri UYA profilleri de 48 saatlik artıkta bulunmuştur. Araştırma Bulguları: Her bir mikroalg için IVOMD ve NEL değerleri arasındaki farklar önemlidir P0.05. IVOMD ve NEL değerleri arasındaki farklar, SPTS ve CVGSde birbirine benzer ve SSPPden 31.10, KM, 1010 kcalkg yüksek bulunmuştur P0.05. C2, UYA ve CH4 VFA CVGSde en yüksek, SPTS ve SSPPde ise birbirine benzer bulunmuştur. SPTS ve SPSSin CH4VFA değerleri birbirine benzer olmasına rağmen, SSPPnin CH4VFA değeri 0.70 molmol VFA en düşük bulunmuştur. Sonuç: Sonuç olarak, ruminant beslemede yüksek enerji, ham protein ve UYA içeriği nedeniyle ekonomik olarak üretilirse CVGSnin alternatif yem kaynağı olarak kullanılabileceği, SPTS ve SSPPnin ise UYA ve CH4VFA konsantrasyonunun düşük olması nedeniyle yem katkı maddesi olarak kullanılabileceği söylenebilir.

Article Details

The in vitro energy and enteric methane values of three microalgae species for ruminants

Authors:

Nagehan Nur Altan | Muazzez Acar

Publisher:

Ege University

Main Topics:

Hayvan Besleme | Hayvan Beslenmesi

Journal:

Ege Üniversitesi Ziraat Fakültesi Dergisi Vol.62 Issue 2, pp.163-172

Document Type:

Article

Publication Date:

6/2025

Document Language:

English

Document ID (Org No.):

2001351365

pISSN:

1018-8851

In vitro

metan

mikroalg

protein

yem değeriIn vitro

methane

microalgae

protein

feed value

Issues

Article Details

Authors: Nagehan Nur Altan | Muazzez Acar

Publisher: Ege University

Main Topics: Hayvan Besleme | Hayvan Beslenmesi

Journal: Ege Üniversitesi Ziraat Fakültesi Dergisi Vol.62 Issue 2, pp.163-172

Document Type: Article

Publication Date: 6/2025

Document Language: English

Document ID (Org No.): 2001351365

pISSN: 1018-8851

Issues

Authors:

Nagehan Nur Altan | Muazzez Acar

Publisher:

Ege University

Main Topics:

Hayvan Besleme | Hayvan Beslenmesi

Journal:

Ege Üniversitesi Ziraat Fakültesi Dergisi Vol.62 Issue 2, pp.163-172

Document Type:

Article

Publication Date:

6/2025

Document Language:

English

Document ID (Org No.):

2001351365

pISSN:

1018-8851