Skip to main content

Ruminant Nitrogen Usage (1985) / Chapter Skim
Currently Skimming:

10 Application to Ruminant Feeding
Pages 66-74

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 66...
... . In acldition, these processes affect the quantity of amino acids available to the animal and the makeup of the mixture of the amino acids absorbed compared to that in the diet.
Read the entire page →
From page 67...
... Concerns offers associated with the in situ technique include: (1) loss of undegraded proteins that are soluble or become small enough to pass the bag pores with fluid ire the rumen or during washing, (2)
Read the entire page →
From page 68...
... . A value of RP = 0.15 IP fits the lactating dairy cow data reasonably well and is proposed as the factor to use, but it does not fit the data from beef cows fed diets with IPDM of 0.05 to 0.08.
Read the entire page →
From page 69...
... Metabolic fecal N represents a major loss of a portion of the dietary N in many feeding instances, particularly the mature ruminant fed near maintenance. It has been common to plot the relationship between N in the diet dry matter (g/kg)
Read the entire page →
From page 70...
... = 90 IDM IDM = daily indigestible dry matter excretion (kg) , calculated from: DM (1 ATDN)
Read the entire page →
From page 71...
... : 0.80. Application to Ruminant Feeding 71 CALCULATION OF FLOW OF TRUE PROTEIN TO SMALL INTESTINE The protein flow to the small intestine is the combined sum of microbial protein and the protein in feedstuffs that escapes degradation in the rumen.
Read the entire page →
From page 72...
... EXAMPLE AND FORM FOR CALCULATING PROTEIN NEED AND DIETARY PROTEIN CHARACTERISTICS A Example: 600-kg BW dairy cow, 30 kg 3.S percent fat milk, 3.3 percent protein, lSO days pregnant, + 0.10 kg/day body weight change.
Read the entire page →
From page 73...
... In addition, Appendix Tables 7 and 8 present clata, computed from these same concepts, on the concentration of clietary protein needed for a va riety of conditions for beef cattIe as well as the percent age of that protein that should escape ruminal degrada tion to result in the optimum feeding program for that animal. These latter tables can also be used to evaluate the potential for using NPN and to aid in selecting sup plemental protein sources.
Read the entire page →
From page 74...
... , the amino acid balance of the UIP becomes important in evaluating the transfer coefficients. Formulation of diets only on the basis of how much AP is presented to the animal will in some cases be inappropriate because of poor distribution of essential amino acids in the AP.
Read the entire page →

Key Terms

  • amino acids
  • absorbed protein
  • fecal protein
  • nitrogen usage
  • dietary protein

  • dry matter
  • slowly degraded
  • fed diets
  • ruminant nitrogen
  • body weight

  • metabolic fecal
  • dairy cow
  • amino acid
  • crude protein
  • percent roughage

  • absorbed true
  • low ipdm
  • microbial protein
  • ruminal degradation
  • situ procedure

  • empty body
  • microbial growth
  • transfer coefficients
  • cattle consuming
  • protein produced

  • intake protein
  • dairy cows
  • lactating dairy
  • feed analysis
  • total requirement


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.