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Name | Definition |
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NDF |
NDF, fraction of the cell walls according to Van Soest, considered to be roughly equivalent to hemicellulose, true cellulose and lignin. |
NE growing pig |
Net energy for growing pig. Difference between the metabolizable energy and the energy lost in heat during metabolization process. |
Nitrogen degradability (effective, k=4%) |
Effective degradability of nitrogen in ruminants, calculated with a hourly disappearance rate of 4%. The effective degradability is calculated as D = a + ((b*c)/(k+c)) where a = fraction immediately degradable, b = fraction potentially degradable, c = degradation rate of particles and k = hourly disappearance rate of particles (Ørskov and MacDonald, 1979). |
Nitrogen degradability (effective, k=6%) |
Effective degradability of nitrogen in ruminants, calculated with a hourly disappearance rate of 6%. The effective degradability is calculated as D = a + ((b*c)/(k+c)) where a = fraction immediately degradable, b = fraction potentially degradable, c = degradation rate of particles and k = hourly disappearance rate of particles (Ørskov and MacDonald, 1979). |
Nitrogen digestibility, growing pig |
Nitrogen digestibility for the growing pig, calculated as percentage of digestible (total tract) nitrogen relative to the nitrogen content of the feed. |
Nitrogen digestibility, rabbit |
Nitrogen digestibility for the rabbit, calculated as percentage of digestible (total tract) nitrogen relative to the nitrogen content of the feed. |
Nitrogen digestibility, ruminants |
Nitrogen digestibility for ruminants, calculated as percentage of digestible (total tract) nitrogen relative to the nitrogen content of the feed. |
Nitrogen digestibility, salmonids |
Nitrogen digestibility for salmonids (salmons and trouts), calculated as percentage of digestible (total tract) nitrogen relative to the nitrogen content of the feed. |