EC627 Revised 1953 Feeding Milk Cows

Extension circular 627 is a 1953 revised version of extension circular 627. It provides information on what and how to feed dairy cows during the various stages of their milking cycle

How to Interpret D.H.I.A. Records

Explanation and use of information on monthly heard reports (DHIA-200) discusses reading the sheet, goals for the herd, and individual cow records

EC630 Revised 1951 Grade A Milk

Extension circular 630-51 (Revised) provides information on producing Grade A milk

High-resolution infrared studies of perdeutero-spiropentane, C₅D₈

Perdeutero-spiropentane (C₅D₈) has been synthesized and infrared and Raman spectra are reported for the first time. Wavenumber assignments are made for most of the fundamental vibrational modes. Gas phase infrared spectra were recorded at a resolution (0.002 cm⁻¹) sufficient to resolve individual rovibrational lines and show evidence of strong Coriolis and/or Fermi resonance interactions for most bands. However a detailed rovibrational analysis of the fundamental ν₁₅ (b₂) parallel band proved possible and a fit of more than 1600 lines yielded a band origin of 1053.84465(10) cm⁻¹ and ground state constants (in units of cm⁻¹): B0 = 0.1120700(9), DJ = 1.51(3) x10⁻⁸, DJK = 3.42(15) x10⁻⁸. We note that the B0 value is significantly less than a value of Ba = 0.1140 cm⁻¹ calculated using structural parameters from an earlier electron diffraction (ED) study, whereas one expects Ba to be lower than B0 because of thermal averaging over higher vibrational levels. A similar discrepancy was noted in an earlier study of C₅H₈ [1]. The structural and spectroscopic results are in good accord with values computed at the anharmonic level using the B3LYP density functional method with a cc-pVTZ basis set

High-resolution infrared studies of perdeutero-spiropentane, C₅D₈

Perdeutero-spiropentane (C₅D₈) has been synthesized, and infrared and Raman spectra are reported for the first time. Wavenumber assignments are made for most of the fundamental vibrational states. Gas phase infrared spectra were recorded at a resolution (0.002 cm⁻¹) sufficient to resolve individual rovibrational lines and show evidence of strong Coriolis and/or Fermi resonance interactions for most bands. However a detailed rovibrational analysis of the fundamental v₁₅ (b₂) parallel band proved possible, and a fit of more than 1600 lines yielded a band origin of 1053.84465(10) cm⁻¹ and ground state constants (in units of cm⁻¹): B₀ = 0.1120700(9), Dⱼ = 1.51(3) x 10⁻⁸, Dⱼₖ = 3.42(15) x 10⁻⁸. We note that the B₀ value is significantly less than a value of Bₐ = 0.1140 cm⁻¹ calculated using structural parameters from an earlier electron diffraction (ED) study, whereas one expects Ba to be lower than B₀ because of thermal averaging over higher vibrational levels. A similar discrepancy was noted in an earlier study of C₅H₈ (Price et al., 2011). The structural and spectroscopic results are in good accord with values computed at the anharmonic level using the B3LYP density functional method with a cc-pVTZ basis set

EC60-635 Mastitis is a Costly Disease

Extension Circular 60-635: This is about the disease, Mastitis, and how it affects farmers and their cow

EC631 Revised 1955 Dairy Herd Management

Extension circular 631-55 is a 1955 revision of extension circular 631 on dairy herd management. It discusses how to save labor, selecting a breed, raising a heifer, reproduction, common diseases in dairy cattle, and general dairy cattle management practices

EC627 Revised no date New Method of Feeding Milk Cows

Extension circular 627nd is a revised version of extension circular 627. the original date is unknown. It provides information on what and how to feed dairy cows during the various stages of their milking cycle