大学MOOC Cattle Production Science(Northwest A&F University)1458236174 最新慕课完整章节测试答案
Chapter five Genetic breeding of cattle
文章目录
- Chapter five Genetic breeding of cattle
- Chapter four Productivity of cattle and its evaluation method
- Chapter nine Feeding management of beef cattle
- Chapter one Introduction
- Chapter seven
- Chapter six
- Chapter ten Health care and disease control of cattle
- Chapter three Biological characteristics and physical appearance of cattle
- Chapter two Cattle species and breeds
Unit test
1、单选题：
（ ）which is a method to improve the quality and production performance of cattle through selection, selection and Cultivation in a cattle breed.
选项：
A: Hybrid breeding
B: MOET
C: Molecular breeding
D: Breeding of this variety
答案: 【 Breeding of this variety】
2、单选题：
Cross breeding is an effective way to create new varieties through ( ) varities.
选项：
A: two
B: three
C: three or more than three
D: two or more than two
答案: 【 two or more than two】
Chapter four Productivity of cattle and its evaluation method
Unit test
1、单选题：
Under good feeding conditions, cattle are prone to accumulate a large amount of ( ) at 24 months old.
选项：
A: Protein
B: carbohydrate
C: fat
D: connective tissue
答案: 【 fat 】
2、单选题：
The principle of measuring tenderness of beef with tenderness meter is to measure muscle fiber ( ).
选项：
A: Viscous resistance
B: shear resistance
C: elastic resistance
D: tensile resistance
答案: 【 shear resistance】
3、单选题：
The important substance for the special flavor of beef is ( ) in beef.
选项：
A: Benzoic acid
B: pyruvate
C: fatty acid
D: amino acid
答案: 【 fatty acid】
4、单选题：
Standard milk, also known as milk fat correction milk (FCM), has a milk fat ratio of ( ).
选项：
A: 4.5%
B: 4.0%
C: 3.5%
D: 3.0%
答案: 【 4.0% 】
Chapter nine Feeding management of beef cattle
Unit test
1、单选题：
The criteria for fattening cattle are mainly as follow ( ).
选项：
A: body condition
B: The chest
C: Body height
D: Body lengt