| Supplemental fat and nicotinic acid for Holstein cows during an entire lactation. | |
| | |
MedLine Citation:
|
PMID: 9493095 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The objectives of this experiment were to determine long-term responses to supplemental fat (from whole soybeans and liquid animal fat) and to determine whether the supplementation of nicotinic acid would enhance milk protein content or yield. From wk 4 through 43 postpartum, 44 multiparous Holstein cows (10 to 12 per treatment) were assigned to one of four dietary treatments: 1) control, 2) control plus 12 g/d of nicotinic acid, 3) supplemental fat, and 4) supplemental fat plus 12 g/d of nicotinic acid. The dry matter intake of cows did not differ among dietary treatments. Yields of milk, solids-corrected milk, and 3.5% fat-corrected milk were increased by nicotinic acid; the yield of fat-corrected milk during wk 4 to 25 was increased by supplemental fat. Contents of crude protein (CP) and true protein in milk were less for cows fed diets supplemented with fat or nicotinic acid; casein content was decreased by nicotinic acid. Intake of net energy for lactation was greater for cows fed supplemental fat; energy balance was greater during wk 4 to 25 for cows fed diets supplemented with fat. Body condition score and body weight were less when nicotinic acid was added to the control diet than when it was added to the diet supplemented with fat. Supplemental fat increased the concentration of nonesterified fatty acids (NEFA) in plasma; nicotinic acid increased NEFA when it was added to the control diet but decreased NEFA when it was added to the diet supplemented with fat. Nicotinic acid did not prevent the decrease in milk CP content that was induced by dietary fat, but it did increase milk yield and tended to increase the yield of milk CP. |
| | |
Authors:
|
J K Drackley; D W LaCount; J P Elliott; T H Klusmeyer; T R Overton; J H Clark; S A Blum |
Related Documents
:
|
8182175 - Soyhulls as a replacement for forage fiber in diets for lactating dairy cows. 20723695 - Effect of dietary concentrate on rumen fermentation, digestibility, and nitrogen losses... 10629815 - Response of dairy cows fed grass silage diets to abomasal infusions of histidine alone ... 12867725 - Relationships of metabolic profiles to milk production and feeding in dairy cows. 12433205 - Hypocholesterolemic activity of bifidobacteria isolated from a healthy korean. 22847675 - The effects of dietary fatty acid composition in the post-sucking period on metabolic a... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of dairy science Volume: 81 ISSN: 0022-0302 ISO Abbreviation: J. Dairy Sci. Publication Date: 1998 Jan |
Date Detail:
|
Created Date: 1998-04-03 Completed Date: 1998-04-03 Revised Date: 2006-11-15 |
Medline Journal Info:
|
Nlm Unique ID: 2985126R Medline TA: J Dairy Sci Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 201-14 Citation Subset: IM |
Affiliation:
|
Department of Animal Sciences, University of Illinois, Urbana 61801, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
3-Hydroxybutyric Acid Animals Body Composition Body Weight Caseins / analysis Cattle / physiology* Diet Dietary Fats / administration & dosage* Eating Energy Intake Energy Metabolism Fatty Acids, Nonesterified / blood Female Hydroxybutyrates / blood Lactation / physiology* Milk / chemistry Milk Proteins / analysis Niacin / administration & dosage* Nitrogen / analysis Time Factors |
| Chemical | |
Reg. No./Substance:
|
0/Caseins; 0/Dietary Fats; 0/Fatty Acids, Nonesterified; 0/Hydroxybutyrates; 0/Milk Proteins; 300-85-6/3-Hydroxybutyric Acid; 59-67-6/Niacin; 7727-37-9/Nitrogen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Effects of nonfiber carbohydrate and niacin on periparturient metabolic status and lactation of dair...
Next Document: Milk yield and composition of lactating cows fed steam-flaked sorghum and graded concentrations of r...