Dicalcium Phosphate and Soft Phosphate with Colloidal Clay as Sources of Phosphorus for Beef Heifers

Tan, Lei; Tillman, A. D.; Nelson, A. B.; Davis, B. E.; Gallup, Willis D.

doi:10.2527/jas1956.1541112x

Cited by 8 publications

(2 citation statements)

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“…The authors concluded that the P required for gain of 1.3 kg/d was .25% P, despite the fact that plasma concentrations were similar in cattle fed each treatment. Long et al (1956) fed growing, yearling beef heifers P levels of .07, .11, and .15% of DM and reported linear improvements in intake, gain, and plasma P. However, Call et al (1978) fed growing heifers primarily hay diets at either 66 (10.3 g/d) or 174% (26.1 g/d) of NRC-predicted P requirements (NRC, 1978) for 2 yr and observed no differences between dietary treatments in gain, body weight, intake, or calving performance.…”

Section: Discussionmentioning

confidence: 99%

Effect of dietary phosphorus on finishing steer performance, bone status, and carcass maturity.

Erickson

Klopfenstein

Milton

et al. 1999

Journal of Animal Science

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Yearling crossbred steers (n = 60; 386 kg) were individually fed in a completely randomized experimental design to determine their P requirement. Treatments were in a factorial arrangement with two levels of Ca (.35 or .70% of DM) and five concentrations of P (.14, .19, .24, .29, or .34% of DM). The finishing diet consisted of 34.5% dry-rolled corn, 22.5% brewers grits, 22.5% corn bran, 7.5% ground corncobs, 5% molasses, 3% fat, and 5% supplement. Supplemental P was provided as monosodium phosphate and Ca as limestone. Ash content was determined on the first phalanx bone from the lower front legs following slaughter, and rib bone breaking strength was determined with an Instron Universal Testing Machine. Carcass maturity and shear force were also evaluated on wholesale rib

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Section: Discussionmentioning

confidence: 99%

Effect of dietary phosphorus on finishing steer performance, bone status, and carcass maturity.

Erickson

Klopfenstein

Milton

et al. 1999

Journal of Animal Science

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show abstract

“…Gains and efficiencies were improved up to 0.25% P. No further improvement was noted when P was increased to 0.33%. Similarly, Long et al (1956) evaluated the P required for developing yearling heifers. The authors found linear increases in intake, weight gain, and plasma P over the range of 0.07, 0.11, and 0.15% dietary P. Call et al (1978) conducted a two-year experiment with maturing heifers.…”

Section: Feedlot Beefmentioning

confidence: 99%

The role of nutrition in reducing nutrient output from ruminants

Satter

Klopfenstein

Erickson

2002

Journal of Animal Science

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Much of the effort expended on nutrient management has focused on the post-excretion product. It is important to keep in mind that management of the diet can have important impacts on quantitative and qualitative aspects of the excreted nutrients. Surveys of nutritionists and extension specialists show that dairy producers are advised to feed 0.45 to 0.50% phosphorus (P) (DM basis) in their lactating cow diets. This is 20% in excess of NRC (2001) requirements. Feeding to requirement would reduce P excretion by 25 to 30% and would reduce solubility and potential for runoff of the P that is applied to fields. Nitrogen (N) excretion by dairy cows can also be decreased, but by a lesser amount. Balancing ruminally undegraded and degraded protein and use of protected methionine along with strategic selection of protein supplements that are relatively rich in lysine, may permit a 10 to 15% reduction in total N excretion, with most of the reduction occurring in urinary N. Urinary urea, following conversion to ammonia, is the N excretion product most vulnerable for loss to the environment. Feedlot cattle rou-

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The bioavailability of phosphorus from canola meal as measured by Holstein calves and mobile bag technique

Ingalls

Okemo

1994

Animal Feed Science and Technology

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Dicalcium Phosphate and Soft Phosphate with Colloidal Clay as Sources of Phosphorus for Beef Heifers

Cited by 8 publications

References 0 publications

Effect of dietary phosphorus on finishing steer performance, bone status, and carcass maturity.

Effect of dietary phosphorus on finishing steer performance, bone status, and carcass maturity.

The role of nutrition in reducing nutrient output from ruminants

The bioavailability of phosphorus from canola meal as measured by Holstein calves and mobile bag technique

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