Forced molting should be carried out at ( )
A: Late stage of egg production
B: Before Birth
C: The period of increasing laying rate
D: Peak egg production
A: Late stage of egg production
B: Before Birth
C: The period of increasing laying rate
D: Peak egg production
举一反三
- What are the clinical symptoms of Dermanyssus gallinae? ( ) A: Irritation B: Decrease of egg production rate C: Anemia D: Dermatitis
- The clinical stage of vitamin D deficiency rickets is A: Early period, middle period, late period B: Initial period, peak period, recovery period C: Early stage, acute period, recovery period, sequelae period D: none of the above
- Under the premise of technological production, preventive maintenance should be carried out at least twice a year to master the operating status of the system and eliminate the hidden trouble.
- Did the chicken come before the egg, or the egg before the chicken? This is a question of how life began in general.(whether... or...)
- That model won't go into ______ before late 2007. A: contribution B: retribution C: evolution D: production