Feed Quality Evaluation

Question 1

involves examination of the physical and chemical features of feeds under study

Answer 1

Feed quality evaluation

Question 2

performed to ensure that nutritional standards are maintained for accurate feed formulation and optimal production performance of animals

Answer 2

Feed quality evaluation

Question 3

major problems in feed production that can be addressed by feed quality evaluation

Answer 3

Poor quality
Adulteration

Question 4

the usual observations made with the naked eye or with the use of hard lens / microscope to detect off-quality feed ingredients or finished feeds

Answer 4

Physical evaluation

Question 5

involves in the examination of appearance of the feed sample under a microscope

Answer 5

Feed microscopy

Question 6

done to detect purity of the sample or presence of any adulterants and contaminants

Answer 6

Feed microscopy

Question 7

the identification and evaluation of ingredients and foreign materials by surface features or by internal cellular characteristics

Answer 7

Qualitative feed microscopy

Question 8

the proportioned measurement of each ingredient in finished feed or of contaminants and adulterants in ingredients

Answer 8

Quantitative microscopy

Question 9

also called Weende system

Answer 9

Proximate analysis

Question 10

is a quantitative method to determine different macronutrients in feed

Answer 10

Proximate analysis

Question 11

allows the partition of feed compounds into six categories by means of common chemical properties
(MC, ash, CP, ether extracts, CF, NFE)

Answer 11

Proximate analysis

Question 12

represents the inorganic or mineral portion if the feed

Answer 12

Ash

Question 13

MC is determined by heating the oven at ___ C

Answer 13

105 C at least one night until the water has been driven off

Question 14

Ash is determined by burning off DM at a furnace set at ___C

Answer 14

550 C

Question 15

Nitrogen of a feed sample is determined using what method

Answer 15

Kjeldahl method

Question 16

percent CP is calculated by multiplying the percent N with a factor of ____

Answer 16

6.25

Question 17

all the portion of a feed soluble in ether

Answer 17

Crude fat / Ether extract

Question 18

most unstable component of feeds

Answer 18

fat

Question 19

a variable mixture (cellulose, hemicellulose, lignin)

Answer 19

Crude fiber

Question 20

represents the non-structural carbohydrate of feed sample

Answer 20

NFE

Question 21

is a measure of soluble carbohydrates

Answer 21

NFE

Question 22

composed of fibrous portions of plants

Answer 22

CF

Question 23

a measure of feed digestibility

Answer 23

CF

Question 24

the first analysis given on the feed tag

Answer 24

CP

Question 25

amount contained in the feed as it would be fed to the animals

Answer 25

As-fed basis

Question 26

amount contained in a sample which is generally assumed to be approx 90% DM

Answer 26

Air-dry basis

Question 27

amount contained in only the dry matter fraction

Answer 27

Dry matter basis

Question 28

alternative to the mathod of CF determination by proximate analysis

Answer 28

Neutral Detergent FIber (NDF) Acid Detergent Fiber (ADF)

Question 29

represents the total fiber in fibrous feed which includes the hemicellulose, cellulose, lignin

Answer 29

Neutral Detergent Fiber (NDF)

Question 30

represents the pectins, starch, sugars, protein, fat content

Answer 30

Neutral Detergent Soluble (NDS)

Question 31

represents lignocellulose in feed

Answer 31

Acid Detergent Fiber (ADF)

Question 32

represents the hemicellulose content of the sample

Answer 32

Acid Detergent Soluble (ADS)

Question 33

represents the lignin content of the feed

Answer 33

Acid Detergent Lignin (ADL)

Question 34

NDF - NDS ADF - ADS ADL represents:

Answer 34

NDF: total fibrous feed (hemicellulose, cellulose, lignin) NDS: pectins, starch, sugars, proteins, fat content ADF: lignocellulose ADS: hemicellulose ADL: lignin content

Question 35

non-consumptive, instrumental method for fast, accurate and precise evaluation of chemical composition and other attributes of feedstuffs

Answer 35

Near infrared spectroscopy

Question 36

rapid, convenient, and economical method for screening or evaluating the feeding value of roughages used in ruminant nutrition research and development studies

Answer 36

In vitro rumen fermentation

Question 37

involves laboratory test for the presence of feed-borne microorganisms such as E. coli and Salmonella especially oil seed meals and animal derived protein meals

Answer 37

Microbiological test

Question 38

test carried out using test animals

Answer 38

Biological test

Question 39

provides an indication of the acceptability of a feed and measures animal response relative to the ingested feed

Answer 39

Feeding trial

Question 40

used to determine the proportion of the nutrients form the feed that is digested as absorbed through the GI tract

Answer 40

Digestion trial

Question 41

involves gathering of the feed intake, fecal output, nutrient content of feed, and fecal samples

Answer 41

Total collection method

Question 42

involves the use of inert reference substance as an indicator

Answer 42

Indicator method