| Evaluating percentage of roughage in lamb finishing diets containing 40% dried distillers grains: growth, serum urea nitrogen, nonesterified fatty acids, and insulin growth factor-1 concentrations and wool, carcass, and fatty acid characteristics. | |
| | |
MedLine Citation:
|
PMID: 20495127 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Effects of percentage of roughage on growth, serum urea N, NEFA, and IGF-1 concentrations and wool, carcass, and fatty acid (FA) characteristics were investigated in Rambouillet wether lambs (n = 33). Lambs were individually fed ad libitum pelleted diets for 98 d containing 40% dried distillers grains and other ingredients, with 10% (CSH10), 20% (CSH20), or 30% (CSH30) cottonseed hulls replacing an increasing amount of ground sorghum grain. Results indicated no interaction between diet and day for lamb BW, ADG, or G:F. Percentage of roughage did not affect lamb BW, even though ADG linearly increased (P = 0.005) as cottonseed hulls increased in the diet. Increasing percentage of cottonseed hulls in the diet linearly increased (P < 0.001) daily DMI, which resulted in a linear increase (P = 0.001) in degradable protein intake. All lambs had similar G:F: 0.200, 0.181, and 0.190 for lambs fed CSH10, CSH20, and CSH30 diets, respectively. Diet x day interactions were not observed (P > 0.45) for serum urea N, NEFA, or IGF-1 concentrations. Serum urea N linearly increased (P = 0.005) as percentage of cottonseed hulls increased in the diet. All lambs had similar NEFA concentrations, but serum IGF-1 linearly decreased (P = 0.001) as percentage of cottonseed hulls increased in the diet. Lambs had similar wool fiber characteristics except that average fiber curvature and SD of fiber curvature linearly increased (P = 0.03) as percentage of cottonseed hulls increased in the diet. Carcass characteristics and sensory panel traits were not affected (P > 0.19) by diet, except for body wall thickness (quadratic, P = 0.03) and a linear decrease in sustained tenderness (P = 0.02) as the percentage of cottonseed hulls increased in the diet. As cottonseed hulls increased in the diet, percentages of myristic and palmitoleic (linear, P < 0.05) and arachidic SFA (quadratic, P = 0.03) decreased and cis-9,trans-11 CLA increased (linear, P = 0.007). When sorghum grain and cottonseed hull prices are similar to those reported for this study, lamb feeders are advised to use the CSH30 diet vs. CSH10 or CSH20 diets because even though DMI was greater for lambs consuming CSH30 diet, those lambs had greater ADG and the least cost of feed x kg(-1) of BW gain. |
| | |
Authors:
|
T R Whitney; C J Lupton |
Related Documents
:
|
9419997 - Effects of locoweed (oxytropis sericea) on growth, reproduction, and serum hormone prof... 20622177 - Maternal obesity and increased nutrient intake before and during gestation in the ewe r... 8312437 - Adrenal axis and hypogonadotropism in the growth-restricted female lamb. 3693157 - Induced non-enzymatic browning of soybean meal. ii. ruminal escape and net portal absor... 288367 - Polycystic changes in rat kidney induced by biphenyl fed in different diets. 11831527 - Early-weaning and postweaning nutritional management affect feedlot performance, carcas... |
Publication Detail:
|
Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't Date: 2010-05-21 |
Journal Detail:
|
Title: Journal of animal science Volume: 88 ISSN: 1525-3163 ISO Abbreviation: J. Anim. Sci. Publication Date: 2010 Sep |
Date Detail:
|
Created Date: 2010-08-13 Completed Date: 2010-12-14 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8003002 Medline TA: J Anim Sci Country: United States |
Other Details:
|
Languages: eng Pagination: 3030-40 Citation Subset: IM |
Affiliation:
|
Texas AgriLife Research, 7887 US Hwy 87 N., San Angelo, TX 76901, USA. trwhitney@ag.tamu.edu |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animal Feed
/
analysis* Animals Blood Urea Nitrogen Body Composition Diet / veterinary* Dietary Fiber / pharmacology* Fatty Acids, Nonesterified / blood, chemistry, metabolism Insulin-Like Growth Factor I / metabolism* Male Meat / analysis Sheep / blood, growth & development* Wool |
| Chemical | |
Reg. No./Substance:
|
0/Fatty Acids, Nonesterified; 67763-96-6/Insulin-Like Growth Factor I |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Hyperleptinemia in mares and geldings: assessment of insulin sensitivity from glucose responses to i...
Next Document: Modeling variance structure of body shape traits of Lipizzan horses.