Term
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Definition
| LAI required to intercept 95% of incident light |
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Term
| how to calculate % dry matter (% DM) |
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Definition
| Percent DM = 100% - moisture % |
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Term
| how to calculate Estimated Digestible Dry Matter (DDM) |
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Definition
| Estimated Digestible Dry Matter = 88.9 – [0.779 x ADF(%)] |
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Term
| how to calculate Estimated Dry Matter Intake (DMI) |
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Definition
| Estimated Dry Matter Intake = 120 / NDF (%) |
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Term
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Definition
NFE = 100 –(CP + EE + CF + Ash + Moisture)
When crude protein, fat, water, ash, and fiber are added and the sum is subtracted from 100, the difference is NFE. |
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Term
| how to calculate dietary cation-anion difference (DCAD) |
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Definition
| DCAD, meq/100 grams of DM = [(%Na/.023) + (%K/.039)] – [(%Cl/.0355) + (%S/.016)] |
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Term
| how to calculate digestible dry matter (DDM) |
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Definition
| DDM% = 88.9 – (ADF% x 0.779) |
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Term
| how to calculate digestion coeffecient of a nutrient |
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Definition
| Digestion coefficient of a nutrient = 100 - (100 * ((% Indicator in feed * % Nutrient in feces) / (% Indicator in feces * % Nutrient in feed))) |
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Term
| how to calculate digestion coeffecient of dry matter |
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Definition
| Digestion coefficient of dry matter = 100 - (100 * (% Indicator in feed DM / % Indicator in fecal DM)) |
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Term
| how to calculate dry matter digestibility |
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Definition
| (kg dry matter intake - kg fecal dry matter)/(kg dry matter intake) |
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Term
| how to calculate dry matter intake (DMI) |
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Definition
| DMI (% of body weight) = 120/NDF% |
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Term
| how to calculate feed value |
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Definition
| Feed value = nutritive value * physical aspects of the forage |
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Term
| how to calculate nitrogen balance |
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Definition
(N in the food consumed) - (N in feces) - (N in urine)
(nitrogen retention.) |
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Term
| how to calculate nonfiber carbohydrates (NFC) |
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Definition
| NFC% = 100% - [%NDF + %CP + %fat + %ash] |
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Term
| how to calculate nutrient digestibility |
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Definition
| nutrient digestibility (%) = ((nutrient intake - nutrient in feces) / (nutrient intake)) * 100 |
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Term
| how to calculate protein equivalent |
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Definition
| protein equivalent (%) = 6.25 * % protein |
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Term
| how to calculate relative feed value (RFV) |
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Definition
RFV% = DDM (%) x DMI (% of body weight)/ 1.29
Relative Feed Value (RFV) = (DDM x DMI) / 1.29 |
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Term
| how to calculate the digestibility of a nutrient in the test feed stuff being fed in form of mixed feed |
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Definition
Digestibility of nutrient in test feed (%) = ((A)- (B) (C) X 100)/(D)
A = Digestibility of nutrient in total diet
B = Digestibility of nutrient in basal diet (usually already determined when fed alone
C = proportion of total nutrient in diet supplied by basal diet
D = proportion of total nutrient in diet supplied by test feed. |
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Term
| how to calculate yield of a grass forage |
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Definition
| Tiller Density x Weight = Yield |
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Term
| how to estimate Net energy of lactation (Mcal/lb) (NEL) |
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Definition
| NEL = 1.50 - (ADF% x 0.0267) |
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Term
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Definition
| ratio of leaf area to land area |
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Term
| how to calculate growing degree days (GDD) |
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Definition
| GDD = ((Tempmax + Tempmin)/ 2) - 32 |
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Term
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Definition
| In vitro dry matter digestibility |
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Term
| NDF basically measures... |
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Definition
| total cell wall content in the plant |
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Term
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Definition
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Term
| how to calculate Nutrients Needed in Supplement |
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Definition
| Animal Nutrient Requirements - Nutrients Supplied by Forage = Nutrients Needed in Supplement |
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Term
| how to calculate forage cost |
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Definition
| forage cost = (total cost / forage yield) |
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Term
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Definition
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Term
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Definition
| animal units per acre over all acres and a period of time |
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Term
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Definition
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Term
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Definition
| animals per acre at any one point in time |
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Term
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Definition
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Term
| how to calculate available acres |
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Definition
| available acres = (paddock size) x (# of paddocks) |
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Term
| how to calculate paddock size |
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Definition
| paddock size = (animal weight x %DMI x Head x Days in paddock) / (available foragediff x grazing efficiency %) |
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Term
| how to calculate number of paddocks |
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Definition
| (days of rest) / (days in paddock) + 1 |
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