The Feeding Value of U. S. No. 1 Alfalfa Hay and U. S. No. 2 Alfalfa Heavy Timothy Mixed Hay

Officially Graded Hay and Its Chemical Composition1,2

“…The results of this study are in substantial agreement with findings of actual feeding trials in which high grade hay was found to be superior to the lower grades ( 3,4,5,6,11).…”

“…Part of the study on which this report is based was made under the authority of the Agricultural Marketing Act (RMA Title II). 3 Formerly Research Associate in farm crops, now Assistant Professor of agronomy, University of Rhode Island; Agriculturist, Grain Division, Agricultural Marketing Service, U.S.D.A. ; formerly Extension Associate in farm crops, now Extension Agronomist, University of Minnesota; Research Specialist in farm crops; and State Chemist, New Jersey Agr.…”

A 100-Year Review: A century of dairy heifer research

“…Feedstuff digestibility for Holstein heifers fed diets that contained no roughage (Mead and Goss, 1935) was shown to be consistent with what would be calculated from ingredient digestibility coefficients determined from the book values of Henry and Morrison (1923), which had been determined when forage was fed. Differing hay quality grades affected gains and feed efficiency (Kelkar and Gullickson, 1950;Gordon et al, 1954Gordon et al, , 1956; however, it was noted that the current chemical and physical analyses were insufficient to completely characterize the value of hays for heifer growth (Gordon et al, 1952). Donker et al (1968) published a method for evaluating forage energy production formulas by comparing various published energy intake estimates with heifer requirements.…”