What is the difference between RFV and RFQ?
Comparison Between RFV and RFQ 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 material includes more grass with generally higher NDF digestibility, the RFQ will show an advantage to the forage over the RFV.
How is RFV calculated?
RFV is calculated by multiplying digestible dry matter by dry matter intake and then dividing by 1.29 (the expected digestible dry matter intake as % of body weight for full-bloom alfalfa).
What is a good Rfv for horse hay?
NDF levels under 65 percent are generally good for horses. Horses likely won’t eat hay with NDF values over 65. A RFV of 100 is about average.
What is Rfv in hay?
Relative feed value (RFV) is a term that has been used in the marketing of hays. It can be calculated for pure grass and legume or mixed hays. To calculate this value it is necessary to have a forage analysis for acid detergent fiber (ADF) and neutral detergent fiber (NDF).
What is a good Rfv in hay?
Alfalfa with a RFV less than 140 should not be considered good enough for early lactation cows. However, alfalfa with a RFV of 125 to 140 could be fed to dairy cows in late lactation. Lower RFV alfalfa would be adequate for growing heifers.
What does Rfv mean in hay?
RELATIVE FEED VALUE
RELATIVE FEED VALUE MEASURES FORAGE QUALITY INTRODUCTION. The most widely accepted measure of the quality of alfalfa is Relative Feed Value (RFV). RFV is an index used to compare the quality of forages relative to the feed value of full bloom alfalfa.
What is a good protein level for hay?
Protein levels can range from 8% to 14% in grass hay, and 15% to 22% in legume (alfalfa) hay. In general, a growing horse needs between 12% and 18% protein in their diet for proper growth and development, while most mature horses will do fine on lower protein hay (10% – 12%).
What is a good Rfv for alfalfa?
Table 1: Alfalfa guidelines
| Quality Designation | Relative Feed Value (RFV) | Acid Detergent Fiber (ADF) |
|---|---|---|
| Premium | 170-185 | 27-29 |
| Good | 150-170 | 29-32 |
| Fair | 130-150 | 32-35 |
| Utility | Under 130 | Over 35 |
Which cut of hay is best for horses?
second cutting
The most common choice of hay is second cutting, but first cutting is also good for horses, plus it is usually cheaper than the other two. Choose hay that is soft, green, and leafy, with thin stems, so it is easier for horses to eat.
What does TDN mean in hay?
Today, we will look at total digestible nutrients (TDN). Often, the terms TDN and energy are used interchangeably when discussing forages and feeds, but realistically TDN is only one measurement of energy. TDN is a combination of digestible fiber, lipids, soluble carbohydrates and proteins.
What is a good Rfv for horses?
What is the best hay to feed horses?
Timothy hay is one of the most popular hays fed to horses. It can be quite expensive, depending on whether it has to be shipped long distances. Timothy must be harvested in the pre- or early-bloom stage to ensure a high nutrient content.
What does RFV stand for?
All Acronyms lists 47 meanings of RFV: business medical broadcasting internet slang media medicine military radio technology television 1 / 7
What is RFV (relative feed value)?
Relative feed value ( RFV) is an accurate indicator for quality over protein content alone which provides an indication of digestibility and how much forage an animal can eat.
What is alfalfa RFV and how is it determined?
Alfalfa RFV is determined by its content of Acid Detergent Fiber (ADF) and Neutral Detergent Fiber (NDF). ADF evaluates the content on cellulose and lig- nin in a forage and is closely related to digestibility. ADF is also used to calculate the energy (NEM, NEL and NEG) content of a forage.