Effects of homofermentative and heterofermentative bacterial silage inoculants on potato hash silage fermentation and digestibility in rams
Abstract
Potato hash, a by-product from the food processing industry, was mixed with wheat bran (70:30) as fed basis and ensiled in 210l drum for 3 months. Three types of potato hash silages were prepared which were: the control (no additives), bonsilage forte (BF, a homofermentative additive) and Lalsil Fresh LB (LFLB, a heterofermentative additive). After 3 months, the silos were opened and sampled for fermentation characteristics. Diets were produced by mixing potato hash silage with soybean meal (90:10) as fed basis and a digestibility study was conducted using five South African Mutton Merino rams (37.2±2.21kg live weight) per diet. Inoculating potato hash silage with BF and LFLB reduced (P<0.05) pH, WSC, butyric acid and ammonia N while increasing the concentration of lactic acid compared to the control. A higher concentration of acetic acid was obtained with LFLB inoculation compared to the other silages. The aerobic stability of the silage was improved (P<0.05) with LFLB while it was reduced with BF inoculation as indicated by higher CO₂ production from the latter. Intakes of dry (DM) and organic matter (OM) were not affected while that of gross energy and CP were improved (P<0.05) with BF and LFLB inoculations. Inoculants increased CP, energy and aNDF digestibility, but did not alter DM or OM digestibility. Inoculating silage with BF improved (P<0.05) digestibility of ether extract compared to the other treatments, and inoculations resulted in higher (P<0.05) N intake and retention. It is concluded that BF and LFLB improved silage fermentation and diet digestibility of CP, aNDF and gross energy. Inoculation with LFLB improved aerobic stability whilst BF inoculation reduced it.
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Aksu et al. (2004) and Nkosi et al. (2010, 2011) reported increased silage digestibility in sheep due to inoculation of the silage.
“However, Aksu et al. (2004) and Nkosi et al. (2010Nkosi et al. ( , 2011) ) reported increased silage digestibility in sheep due to inoculation of the silage.”
From Effects of feeding corn silage inoculated with microbial additives on the ruminal fermentation, microbial protein yield, and growth performance of lambs1 (2014) · cites this paper as Nkosi et al., 2010
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- Authors
- Nkosi, B. D., Meeske, R., van der Merwe, H. J., & Groenewald, I. B.
- Affiliations
- Animal Production Institute (ZA)
- Department of Agriculture, Western Cape Government (ZA)
- University of the Free State (ZA)
- Corresponding author
- Nkosi, B.D.
- Venue
- Animal Feed Science and Technology
- Publisher
- Elsevier BV
- Published
- 2010-05
- Volume
- 157
- Issue
- 3-4
- Pages
- 195-200
- ISSN
- 0377-8401 (ISSN-L)
- OpenAlex
- W2022367785
- Cited by
- 54
- References
- 38
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 3 · 2023: 6 · 2022: 3 · 2021: 3 · 2020: 4 · 2019: 3 · 2018: 5 · 2017: 7 · 2015: 4 · 2014: 2 · 2013: 4 · 2012: 4
- FWCI
- 8.14
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Animal Feed Science and Technology (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
- Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
- Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
- Keywords
- silage inoculants, homofermentative bacteria, heterofermentative bacteria, silage fermentation, aerobic stability, digestibility, rams, Mutton Merino, nitrogen retention, volatile fatty acids, butyrate, ammonia nitrogen, food by-products
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