2020 Animal Nutrition(Sichuan Agricultural University) 最新满分章节测试答案

本答案对应课程为:点我自动跳转查看
本课程起止时间为:2020-12-16到2021-02-28
本篇答案更新状态:已完结

Week 1 Nutrients and their sources Unit 1：Nutrients and their sources

1、 问题:(    ) is negatively related to animal body water.
选项：
A:Fat
B:Protein 
C:Mineral
D: Carbohydrate
答案: 【Fat】

2、 问题:（  ）is the most abundant chemical element in plants and animals.
选项：
A:Oxygen
B:Carbon 
C:Hydrogen
D:Nitrogen
答案: 【Oxygen】

3、 问题:Carbohydrates don’t include（  ）.
选项：
A:Cellulose 
B:Hemicellulose
C:Crude fiber
D:Lignin
答案: 【Lignin】

4、 问题:After deducting ADF from NDF, the remaining part is（   ）
选项：
A:Cellulose
B:Hemicellulose   
C:Crude fiber
D:Lignin
答案: 【Hemicellulose   】

5、 问题:The content of (    ) in plant seeds is lower than that in stems and leaves（  ）
选项：
A:Protein
B:Fat 
C:Nitrogen-free extract 
D:Crude fiber
答案: 【Crude fiber】

6、 问题:The content of (    ) in animals greatly exceeds that in plants.
选项：
A:Calcium 
B:Phosphorus
C:Potassium 
D:Sodium
E:Chlorine
答案: 【Calcium ;
Phosphorus;
Sodium】

7、 问题:Primary moisture is also called（  ）
选项：
A:Free water 
B:Bound water
C:Unbound water 
D:irreducible water
E:Adsorbed water
答案: 【Free water ;
Unbound water 】

8、 问题:（  ） can not be analyzed by proximate analysis methods.
选项：
A:Crude protein
B:Crude fiber
C:Amino acid
D:Calcium
E:Water
答案: 【Amino acid;
Calcium】

9、 问题:The main substance of ash in animals is（  ） 
选项：
A:Potassium 
B:Calcium
C:Phosphorus
D:Sodium
E:Sulfur 
答案: 【Calcium;
Phosphorus;
Sodium;
Sulfur 】

10、 问题:The feed proximate analysis method can measure the（  ）content in the feed.
选项：
A:Calcium
B:Phosphorus
C:Crude protein
D:Crude fat
E:Neutral detergent fiber
答案: 【Crude protein;
Crude fat;
Neutral detergent fiber】

11、 问题:Water can be classified as a pure nutrient.
选项：
A:正确
B:错误
答案: 【正确】

12、 问题:Nutrients can be simple chemical elements or complex compounds.
选项：
A:正确
B:错误
答案: 【正确】

13、 问题:The remaining part of the feed after the free water is removed is called dry matter.
选项：
A:正确
B:错误
答案: 【错误】

14、 问题:Animal diet is called feed.
选项：
A:正确
B:错误
答案: 【正确】

15、 问题:The content of nitrogen-free extracts in the feed can be directly determined.
选项：
A:正确
B:错误
答案: 【错误】

16、 问题:Animals and plants contain basically the same types of chemical elements, with carbon being the most common.
选项：
A:正确
B:错误
答案: 【错误】

17、 问题:The water in the feed includes free water and bound water.
选项：
A:正确
B:错误
答案: 【正确】

18、 问题:The average nitrogen content of crude protein in the feed sample was 16%.
选项：
A:正确
B:错误
答案: 【正确】

19、 问题:Crude fiber is the main component of plant cell walls, including cellulose, hemicellulose, lignin and cutin.
选项：
A:正确
B:错误
答案: 【正确】

20、 问题:Crude ash is mainly inorganic substances such as mineral oxides or salts, and sometimes contains a small amount of sediment.
选项：
A:正确
B:错误
答案: 【正确】

【作业】Week 1 Nutrients and their sources Unit process

1、 问题:What are the similarities and differences in the composition of nutrients in animals and plants? （10 points）
评分规则: 【 (1) Comparison of element composition. The types of components of plants and animals are basically the same, that is, oxygen is the most, followed by carbon and hydrogen, and Ca and P are less. （1 point）There is a large difference in the element content of different plant species, the difference is small among animals. The content of Ca, P, and Na in animals is higher than that of plants, while K is lower than that of plants. Other trace elements are relatively stable. （1 point）(2) Comparison of compound composition1) CarbohydratesCarbohydrates are the most different nutrients in animals and plants.Plants have the highest carbohydrate content, mainly composed of crude fiber and nitrogen-free extract. （1 point）The carbohydrate content in animals is below 1%, mainly glycogen and glucose, and no crude fiber. (1 point)2) ProteinIn addition to true protein in plants, there are non-protein and amides. Protein in animals are mainly true protein, free AA and hormones, without other amides. （1 point）The protein content in animal body is high and relatively stable, and the protein quality is better than plant protein. （1 point）3) LipidsLipids are energy storage substances in animals, and the fat content in animals is higher than that of plants except oil plants. （1 point）In addition to real fat in plants, there are fat-soluble substances, such as fatty acids, pigments, waxes, phospholipids, etc.; animal bodies are mainly real fats, fatty acids and fat-soluble vitamins. （1 point）4) Moisture and AshThe water content of plants varies greatly, and the water content of adult animals is basically constant. （1 point）In terms of dry matter, the ash content of animals is higher than that of plants. （1 point）
】

2、 问题:Briefly describe the main basic functions of various nutrients in feed? （10 points）
评分规则: 【 The main nutrients in the feed include water, crude ash, crude protein, crude fat, crude fiber, nitrogen free extract, etc.Its main basic functions are:（4 points）As a structural substance of an animal body. （2 points）As an energy source for animal survival and production. （2 points）As a regulator of normal activities of the animal body. （2 points）
】

Week 2 Metabolism & function of nutrients Week 2 Metabolism & function of nutrients

1、 问题:Expressions of net energy for production（NEp）are not included（ ）
选项：
A:Weight gain
B:Hair production
C:Service
D:Breathing
答案: 【Breathing】

2、 问题:Nitrogen-corrected metabolic energy（MEn）is often used in（ ）
选项：
A: Pig
B:Poultry
C:Ruminant
D:Aquatic animal
答案: 【Poultry】