Document Detail

Nitrogen utilization, nutrient digestibility, and excretion of purine derivatives in dairy cattle consuming rations containing corn milling co-products.
MedLine Citation:
PMID:  20655434     Owner:  NLM     Status:  MEDLINE    
The objectives of this experiment were to determine the effects of feeding a combination of modified wet distillers grains with solubles (WDGS) and wet corn gluten feed (WCGF) on nutrient digestion, purine derivative excretion, and N utilization. Multiparous (n=20) and primiparous (n=20) cows were arranged in a replicated 5 x 5 Latin square with 21-d periods. Animals were fed one of 5 treatment diets during each period: 1) 0% co-products (control); 2) 15% WDGS (15WDGS); 3) 15% WCGF (15WCGF); 4) 7.5% WDGS and 7.5% WCGF (15MIX); and 5) 15% WDGS and 15% WCGF (30MIX; dry matter basis). A portion of forages, corn, and soy-based protein was replaced with WDGS, or WCGF, or both. Dry matter intake was greater for 15WDGS (25.1 kg/d) and 30MIX (25.5 kg/d) than for control (22.4 kg/d), 15WCGF (23.2 kg/d), or 15MIX (23.5 kg/d). Dry matter digestibility was greatest for 15WCGF and 30MIX (63.6 and 64.1%, respectively) and least for 15WDGS (59.8%), and neutral detergent fiber and N digestibility were greatest for 30MIX (50.7 and 68.6%, respectively) and lowest for 15WDGS (41.3 and 61.5%, respectively). Excretion of purine derivatives in urine was greater for co-product treatment diets than for control. Fecal N was greatest for 15WDGS compared with other treatment diets (311.0 vs. 263.3 g/d), whereas urinary N was greatest for 30MIX (330.0 g/d), intermediate for 15WCGF and 15MIX (319.3 and 320.5 g/d, respectively), and lowest for control and 15WDGS (308.5 and 312.2 g/d, respectively). Manure N (fecal+urinary N) was greatest for 15WDGS, intermediate for 15MIX and 30MIX, and lowest for control and 15WCGF. Treatment diets did not differ in 4% fat-corrected milk production. Compared with the ration containing WDGS, the ration with a 30% mixture of WDGS and WCGF improved nutrient digestibility and N utilization with reduced manure N excretion and increased N retention. Thus, it appears feeding WDGS and WCGF in combination reduces some of the negative effects of feeding WDGS alone.
A M Gehman; P J Kononoff
Related Documents :
20439554 - Starch-entrapped biopolymer microspheres as a novel approach to vary blood glucose prof...
11906564 - Hydrolysis of phytic acid by intrinsic plant or supplemented microbial phytase (aspergi...
1931904 - Measurement and prediction of digestible energy values in feedstuffs for the herbivorou...
9419994 - Estimating endogenous amino acid flows at the terminal ileum and true ileal amino acid ...
25047124 - A novel method to establish a rat ed model using internal iliac artery ligation combine...
3632754 - Failure of foreign serum injections to induce immune vasculitis and to accelerate spont...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of dairy science     Volume:  93     ISSN:  1525-3198     ISO Abbreviation:  J. Dairy Sci.     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-26     Completed Date:  2010-11-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985126R     Medline TA:  J Dairy Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3641-51     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2010 American Dairy Science Association. Published by Elsevier Inc. All rights reserved.
Department of Animal Science, University of Nebraska, Lincoln 68583-0908, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Animal Feed*
Animal Nutritional Physiological Phenomena
Cattle / metabolism,  physiology*
Cereals / metabolism
Digestion / physiology*
Feces / chemistry
Manure / analysis
Nitrogen / metabolism*,  urine
Purines / metabolism*,  urine
Zea mays* / metabolism
Reg. No./Substance:
0/Manure; 0/Purines; 7727-37-9/Nitrogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Technical note: Evaluation of a scoring system for rumen fill in dairy cows.
Next Document:  Inclusion of psyllium in milk replacer for neonatal calves. 1. Effects on growth, digesta viscosity,...