HW 02 Spring 2024 (2)
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Sam Houston State University *
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Course
318
Subject
Health Science
Date
Feb 20, 2024
Type
docx
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2
Uploaded by MinisterMoonRaccoon17
ANSC 318
Name:
______________________
Homework #2
Section: ___________________
Spring 2024
1.
2 Points:
Using the results from a metabolism experiment, calculate the nutrient digestibility for the experimental forage.
Component
Kg per day (AF)
% DM
Kg per day (DM)
Feed intake
8.8
86.5
Fecal output
5.4
50.5
DM digestibility, % : _________
2.
2 Points:
Based on the results of the proximate analysis presented below:
Proximate Analysis
Concentration, % (DM)
Nitrogen
4.0
Ash
7.0
Crude Fiber
10.5
Ether Extract
8.0
Moisture
20.5
Determine the following:
DM, %:__________
Organic matter, % (DM) :______________ CP, % (DM):______________ NFE, % (DM): ____________ 3.
2 Points:
Based on the ADF and NDF chemical analysis results, calculate the DDM, DMI, and RFV for each of the following forages.
Nutrient
Forage A
Forage B
ADF, % DM Basis
26.5
31.4
NDF, % DM Basis
65.8
55.2
DM Digestibility, %
DM intake, % of BW
Relative feed value
1
4.
2 Points:
Given the following information:
Item
Amount, g
Pan weight
138.5
Pan + feed weight (wet)
360.8
Pan + feed weight (dry)
322.4
Determine the following:
DM, %:_________________
Moisture, % :__________________ 5.
2 Points: Use the following data from a grazing trial to determine TDN concentrations for late-season and early-season Tifton-85 Bermuda-grass fed to cattle. Late season Tifton 85
(DM Basis)
Early season Tifton 85 (DM Basis)
Component
Analysis, %
Dig. Coeff, %
Analysis, %
Dig. Coeff, %
Crude Protein
12.2
45.4
11.6
44.21
Ether Extract
5.5
68.7
2.72
60.8
Crude Fiber
18.8
28.54
11.80
28.9
Nitrogen-free Ext.
49.6
53.1
35.6
51.64
Late season Tifton 85
Early season Tifton 85
Component
Digestible Nutrients
Digestible Nutrients
Crude Protein, %
Ether Extract, %
Crude Fiber, %
Nitrogen-free Extract, %
TDN, % (DM Basis)
2
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