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The effects of dietary supplementation with 3-nitrooxypropanol on enteric methane emissions, rumen fermentation, and production performance in ruminants: a meta-analysis
The aim of this study was to investigate the effects of 3-nitrooxypropanol (NOP) on gas production, rumen fermentation, and animal performances depending on animal type using a meta-analysis approach. A database consisted of data from 14 studies, 18 experiments and 55 treatments. The supplementation...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Korean Society of Animal Sciences and Technology
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7008120/ https://www.ncbi.nlm.nih.gov/pubmed/32082596 http://dx.doi.org/10.5187/jast.2020.62.1.31 |
Sumario: | The aim of this study was to investigate the effects of 3-nitrooxypropanol (NOP) on gas production, rumen fermentation, and animal performances depending on animal type using a meta-analysis approach. A database consisted of data from 14 studies, 18 experiments and 55 treatments. The supplementation of NOP linearly decreased methane (CH(4)) emissions [g/kg dry matter intake (DMI)] regardless of animal type and length of experimental period (beef, p < 0.0001, R(2) = 0.797; dairy, p = 0.0003, R(2) = 0.916; and long term, p < 0.0001, R(2) = 0.910). The total volatile fatty acids (VFA) concentration and the proportion of acetate, based on beef cattle database, were significantly decreased with increasing NOP supplementation (p = 0.0015, R(2) = 0.804 and p = 0.0003, R(2) = 0.918), whereas other individual VFAs was increased. Based on the dairy database, increasing levels of NOP supplementation linearly decreased proportion of acetate (p = 0.0284, R(2) = 0.769) and increased that of valerate (p = 0.0340, R(2) = 0.522), regardless of significant change on other individual VFAs. In animal performances, the DMI, from beef cattle database, tended to decrease when the levels of NOP supplementation increased (p = 0.0574, R(2) = 0.170), whereas there was no significant change on DMI from dairy cattle database. The NOP supplementation tended to decrease milk yield (p = 0.0606, R(2) = 0.381) and increase milk fat and milk protein (p = 0.0861, R(2) = 0.321, p = 0.0838, R(2) = 0.322). NOP is a viable candidate as a feed additive because of its CH(4) mitigation effects, regardless of animal type and experiment period, without adverse effects on animal performances. |
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