| Effect of dietary cation-anion difference on urinary pH, feedlot performance, nitrogen mass balance, and manure pH in open feedlot pens. | |
| | |
MedLine Citation:
|
PMID: 21262979 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
Six experiments were conducted to evaluate dietary cation-anion difference (DCAD) in concentrate diets on urinary pH, feedlot performance, and N mass balance. In Exp. 1, 15 wether lambs (33.5 ± 3.0 kg) in five 3 × 3 Latin squares were fed a basal diet of 82.5% dry-rolled corn (DRC), 7.5% alfalfa hay, 5% molasses, and 5% supplement with different proportions of anionic and cationic salts. The DCAD was -45, -24, -16, -8, 0, +8, +16, +24, +32, and +40 mEq per 100 g of DM with the control basal diet (DCAD = +8) included in each square. Urinary pH increased (cubic, P < 0.01) as DCAD increased and DMI increased linearly (P < 0.01) with increasing DCAD. In Exp. 2 and 3, 8 Holstein steers (312 ± 24 kg) were used in 2 consecutive 4 × 4 Latin squares. Steers were fed either the same basal diet as Exp. 1 or a basal diet with 20% wet distillers grains (WDGS) replacing DRC. In Exp. 2, DCAD was adjusted to -2, -12, and -22 mEq per 100 g of DM from the basal diet (DCAD = +8) and DCAD was adjusted in Exp. 3 to -12, -22, and -32 mEq per 100 g of DM from the basal WDGS diet (DCAD = -2). Urinary pH decreased linearly as DCAD decreased (P < 0.01) in both experiments, whereas DMI decreased linearly in Exp. 2 (P = 0.02) but not Exp. 3 (P = 0.96). In Exp. 4, 6 crossbred steers (373 ± 37 kg) were used in a 2-period crossover design. Steers were fed the same basal diet as Exp. 3 with DCAD of -16 (NEG) and +20 (POS) mEq per 100 g of DM. Urinary pH and DMI (P < 0.05) were less for cattle fed the NEG diet compared with POS. In 2 experiments, steers (n = 96 each) were fed NEG or POS as calves (260 ± 22 kg of BW) for 196 d from November to May (Exp. 5) or as yearlings (339 ± 32 kg of BW) for 145 d from June to October (Exp. 6). Final BW, DMI, ADG, and HCW were not different (P > 0.11) among treatments in either experiment. Efficiency of BW gain was increased (P = 0.05) for steers fed NEG compared with POS in Exp. 5 but was not different (P = 0.11) in Exp. 6. Amount of N intake, retention, excretion, and manure N (kg/steer) were not different (P > 0.11) among treatments in either experiment. Manure pH (soil, feces, and urine) was decreased (P < 0.01) in pens fed NEG compared with POS in both experiments. Amount of N lost (kg/steer) was not different (P = 0.44) in Exp. 5, but tended (P = 0.09) to be 10.6% greater for POS compared with NEG in Exp. 6. Urinary pH was decreased by reducing DCAD, but this had minimal effect on N losses in open feedlot pens in these experiments. |
| | |
Authors:
|
M K Luebbe; G E Erickson; T J Klopfenstein; M A Greenquist; J R Benton |
Related Documents
:
|
8404399 - Proximal colonic response and gastrointestinal transit after high and low fat meals. 8440229 - Day- and shiftworkers' leisure time. 19344899 - The -1131t>c snp of the apoa5 gene modulates response to fenofibrate treatment in patie... 9465759 - Physiologic effects of cisapride on gastric emptying after pylorus-preserving gastrecto... 7491939 - Effect of meal timing on diurnal rhythm of human cholesterol synthesis. 6822909 - Gastric histamine metabolism and acid secretion in rats as influenced by diet and nutri... 14641959 - Prebiotics affect nutrient digestibility but not faecal ammonia in dogs fed increased d... 3610769 - Laminitis and decreased milk production in first-lactation cows improperly fed a dairy ... 1662069 - The effects of dietary levels of inorganic phosphorus, calcium and cholecalciferol on t... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of animal science Volume: 89 ISSN: 1525-3163 ISO Abbreviation: J. Anim. Sci. Publication Date: 2011 Feb |
Date Detail:
|
Created Date: 2011-01-25 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8003002 Medline TA: J Anim Sci Country: United States |
Other Details:
|
Languages: eng Pagination: 489-500 Citation Subset: IM |
Affiliation:
|
Department of Animal Science, University of Nebraska, Lincoln 68583. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Winter-feeding systems for gestating sheep II. Effects on feedlot performance, glucose tolerance, an...
Next Document: Left ventricular filling pressure assessment using left atrial transit time by cardiac magnetic reso...