Evaluation of National Research Council and Cornell Net Carbohydrate and Protein Systems for predicting requirements of Holstein heifers

Journal of Dairy Science
M E Van AmburghL E Chase

Abstract

This experiment evaluated the effects of prepubertal energy intake and dietary protein source on average daily gain of Holstein heifers. Holstein heifers (n = 273) were assigned to one of three dietary energy treatments that were designed to achieve average daily gains of 0.6, 0.8, and 1.0 kg/d from 90 to 320 kg of body weight. Within each energy treatment, heifers were assigned to diets that were supplemented with animal and plant proteins or plant protein and urea. Diets were formulated using the Cornell Net Carbohydrate and Protein System. Actual mean daily gains by heifers on each energy treatment were 0.68, 0.83, and 0.94 kg/d and were not affected by protein source. Undegradable intake protein was predicted by the Cornell Net Carbohydrate and Protein System to be adequate to support the observed daily gain that was allowed by the amount of energy in the diet and was 13 to 25% lower than the recommendations for undegradable intake protein by the National Research Council. These results suggested that requirements for undegradable intake protein may be met at concentrations that are less than 35% of the dietary crude protein. Energy equations from the National Research Council and Cornell Net Carbohydrate and Protein System...Continue Reading

References

Apr 1, 1975·Journal of Dairy Science·W BurroughsD R Mertens
Nov 1, 1992·Journal of Animal Science·J B RussellC J Sniffen
Mar 1, 1990·Journal of Animal Science·E B Rayburn, D G Fox
Mar 1, 1987·Journal of Dairy Science·A J Heinrichs, G L Hargrove
Nov 1, 1985·Journal of Dairy Science·J G BaggJ B Stone
May 1, 1982·Journal of Dairy Science·K SejrsenR M Akers
May 1, 1993·Journal of Animal Science·S J AinslieM C Barry

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Citations

Nov 21, 2017·Journal of Dairy Science·A J HeinrichsC M Jones
Oct 16, 2004·Journal of Dairy Science·A F Kertz, H Chester-Jones
Oct 6, 1999·Journal of Dairy Science·D G FoxT P Tylutki
Dec 17, 2005·Journal of Dairy Science·M P CoffeyS Brotherstone
Sep 1, 2008·Animal : an International Journal of Animal Bioscience·Y Le CozlerC Disenhaus

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