846 research outputs found
Relationship of herd average somatic cell count and spontaneous recovery from subclinical mastitis
The rate of spontaneous recovery from subclinical mastitis was evaluated in
56 Kansas. DHI herds participating in the Somatic Cell Count (SCC) program. Herds
were classified as low (>300,000) or high (>600,000) based on herd sec average.
Comparisons between low and high SCC-herds were made for each cow's ability to
recover from a subclinical case of mastitis (>600,000 SCC). Low-SCC herds had a
rate of spontaneous recovery that was more than three times greater than that of
high-SCC herds. Average SCC of cows with subclinical mastitis was similar in low
and high herds J as well as the average sec of cows following spontaneous
recovery. Results illustrate the importance of monitoring monthly sec reports.
Proper attention to good procedures of milking management includes: attention to
milking techniques, proper function of milking equipment, and attention to
sanitation and housing conditions. As a result, herds with low SCC tests will have
higher production and fewer subclinical cases of mastitis
Nutrient requirements of dairy cattle revised
The 1988 National Research Council's (NRC) Nutrient Requirements of Dairy Cattle have
been revised. Adjustments have been made in the recommended requirements for net energy for
lactation (NEL); crude protein (CP); calcium (Ca); phosphorus (P); and vitamins A, D, and E.
In addition, suggestions are made for using undegraded intake protein (UIP) and degraded intake
protein (DIP) for diet formulation
Abstract alphabet distortion-rate functions
Two definitions have been given for the distortion-rate function of a sourceuser pair—one involving test channel induced pair probability measures and the other involving general pair probability measures. It is established that both definitions are equivalent for all source-user pairs. Examples are given which exhibit some kinds of the possible pathological behavior of the distortionrate function for general source-user pairs
Milk urea nitrogen: a nutritional management tool
Milk urea nitrogen (MUN) analyses can be used to evaluate the nutritional status of dairy herds and for fine tuning the feeding program. MUN values \u3e18 mg/100 ml indicate that dietary protein is being wasted and feed costs could be reduced with ration adjustments. Higher than desired MUN values also indicate the need for additional undegradable intake protein (UIP; bypass protein) in the ration. High MUN values can also indicate the need for more nonstructural carbohydrates (NSC) in the diet. MUN readings \u3c14 mg/100 ml indicate dietary crude protein deficiencies or too much UIP in the ration. Reduced milk production or low milk protein tests can occur when feeding rations that produce low MUN tests. Poor reproductive performance may be the result of feeding rations that produce high MUN measurements. Conception rates may be reduced as much as 20 percentage points when MUN is \u3e18 mg/100 ml.; Dairy Day, 1996, Kansas State University, Manhattan, KS, 1996
Recommended from our members
Earthquake Slip Between Dissimilar Poroelastic Materials
A mismatch of elastic properties across a fault induces normal stress changes during spatially nonuniform in-plane slip. Recently, Rudnicki and Rice showed that similar effects follow from a mismatch of poroelastic properties (e.g., permeability) within fluid-saturated fringes of damaged material along the fault walls; in this case, it is pore pressure on the slip plane and hence effective normal stress that is altered during slip. The sign of both changes can be either positive or negative, and they need not agree. Both signs reverse when rupture propagates in the opposite direction. When both elastic and poroelastic properties are discontinuous across the fault, steady sliding at a constant friction coefficient, f, is unstable for arbitrarily small f if the elastic mismatch permits the existence of a generalized Rayleigh wave. Spontaneous earthquake rupture simulations on regularized slip-weakening faults confirm that the two effects have comparable magnitudes and that the sign of the effective normal stress change cannot always be predicted solely from the contrast in elastic properties across the fault. For opposing effects, the sign of effective normal stress change reverses from that predicted by the poroelastic mismatch to that predicted by the elastic mismatch as the rupture accelerates, provided that the wave speed contrast exceeds about 5–10% (the precise value depends on the poroelastic contrast and Skempton's coefficient). For faults separating more elastically similar materials, there exists a minimum poroelastic contrast above which the poroelastic effect always determines the sign of the effective normal stress change, no matter the rupture speed.Earth and Planetary SciencesEngineering and Applied Science
MF890
Edward P. Call & James R. Dunham, A guide to successful AI, Kansas State University, September 1992
Viola Day Recital
Kemp Recital Hall Sunday Afternoon April 13, 2008 4:00p.m
- …