site stats

Hay rfv values

WebRFV = relative feed value 62.4 INTRODUCTION Oat (Avena sativa L.) hay acreage in North Dakota has averaged over 125,000 acres over the last 4 years. Pre-vious work on oat hay quality by Ernie French at Willis-ton in the 1960s indicated that the late-maturing cultivars had greater forage yield, but the early maturing cultivars Websor, 1.29 in the RFV calculation was chosen so that the RFVof full bloom alfalfa has a value of 100. Example: Alfalfa hay or haylage with 32% ADF and 40% NDF (Plug in values for …

Tracking Hay Quality With RFV Calculators and RFID Tracking

WebAug 22, 2014 · The hay that you buy should meet your horse's requirements. Table 1 lists a range of crude protein and ADF values suitable for meeting the nutrient requirements of … WebThe RFV index is made relative to the typical forage quality of alfalfa hay at full bloom. If a full bloom alfalfa hay contains about 41 percent NDF and 53 percent ADF, the calculated … quote of the dayssdddd https://grandmaswoodshop.com

Determining Relative Feed Value Pastures, Grazing, Hay and …

WebJul 19, 2024 · The top left panel shows RFV and RFQ values for legume hay are typically similar. As a report reviewer, I often do see alfalfa hay samples where RFV is equal to RFQ. In fact, approximately half of the legume samples displayed on Figure 1 have a difference in RFV and RFQ of plus or minus 10 or less. Grass Hay RFV and RFQ WebDec 22, 2024 · Perhaps most importantly, it’s critical to understand how, and within what situation, the data becomes meaningful. So, this time, let’s discuss relative feed value, or RFV. Relative feed value is used for forages, and in particular, for alfalfa forages, including dry hay and haylages of predominantly alfalfa composition. WebDec 21, 2024 · Then we combined those values to give an overall estimate of forage quality that we called RFV, which stands for relative feed value. RFV did a fair job of estimating digestibility of legume hay, but its major flaw is assuming all fiber has the same digestibility. quote of the dayssg

Understanding your forage analysis: Value ranges and definitions

Category:FORAGE QUALITY OF OAT HAY VARIETIES - North Dakota State University

Tags:Hay rfv values

Hay rfv values

Understanding your forage analysis: Value ranges and definitions

WebJun 3, 2015 · Alfalfa hay buyers and sellers now have a way to know the relative feed value (RFV) of every bale. A new on-baler system calculates and records RFV as each bale is made, and can assign that value by attaching an RFID tag to the bale’s string. The new precision measurement system has been developed by Harvest Tec, the company … WebThe RFV index is made relative to the typical forage quality of alfalfa hay at full bloom. If a full bloom alfalfa hay contains about 41 percent NDF and 53 percent ADF, the calculated RFV is 100. The RFV is useful in the market for comparing hays. For example, Hay A and B have RFV values of 110 and 90, respectively.

Hay rfv values

Did you know?

WebJan 1, 2012 · Alfalfa growers indicate that buyers often want to know the relative feed value (RFV) of alfalfa for sale. Yet, in this study, RFV was the third-most important objective measure of alfalfa quality, behind CP and TDN. The lowest acceptable RFV content, on average, was 157 for high-producing cows and 135 for dry cows. WebFeb 14, 2008 · RFV. The RFQ value will run higher or lower than the corresponding RFV index based on the NSC, NDF, and NDF digestibility of the sample. As a hay-crop …

WebJan 1, 2002 · These data were used to evaluate equations utilized in predicting relative feed value (RFV) of forages. High and low values of the hays for NDF and ADF were 56.0 to 39.5 and 43.6 to 32.7 ... WebRFV will result in too rapid of a rate of passage of for-age. Lower RFV forage should be included with unusu-ally high RFV hay to slow the rate of passage. FORAGE FACTS …

WebDec 13, 2010 · And it does this quite well, especially for legumes like alfalfa.”. Grass hay, though, is a bit more difficult. Grass has more fiber than alfalfa, which lowers its RFV. … WebApr 30, 2015 · Today there is a new technology emerging in the arena of relative feed value (RFV) testing for alfalfa hay. Because it provides the RFV for every bale produced, this method of testing will allow the dairyman or beef producer to know precisely what each bale is bringing to the ration (although RFV itself is not directly used to calculate rations in …

WebAug 19, 2015 · The higher the RFV, the better the quality of the hay. RFV values should not be used for making direct comparisons of forages. Rather, a range of RFV values should be used to classify a forage. For …

WebSep 3, 2024 · Grass hay, though, is a bit more difficult. Grass has more fiber than alfalfa, which lowers its RFV. But, that fiber often is more digestible than alfalfa fiber. So grass … quote of the day simpleWebAug 24, 2024 · Total digestible nutrients (TDN, %) are at the root of every hay valuation in one way or another. For relative feed value (RFV) and relative forage quality (RFQ), … quote of the day sillyWebHowever the range of RFQ values at any RFV point is great (e.g. RFQ ranges from 140 to 213 for RFV of 175). Observe as well that grasses tend to have higher RFQ than RFV … quote of the day sports