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The objective of this guide is to describe the main events that take place during the dry period, both in the udder and in the cow, and to show how they can influence the subsequent lactation period. The book also provides basic guidelines for a proper drying-off technique and management of cows during this period in order to reduce the prevalence of intramammary infections and achieve optimal milk production.
1. Introduction
The importance of the dry period
Udder health
Strategies
Financial impact
2. Udder physiology during the dry period
Mammary involution
Active involution phase
Steady state phase
Colostrum production phase
Immunity in the mammary gland
Active involution phase
Steady state phase
Colostrum production phase
3. Risk of intramammary infections
Factors affecting susceptibility
Udder quarter-related factors
Cow-related factors
Herd-related factors
4. Welfare of the dairy cow
Welfare of the dairy cow
Consequences of drying-off
Stress caused by pain
Stress caused by nutritional changes
Stress caused by heat
5. Strategies to prevent new infections
Drying-off methods
Advantages and disadvantages of drying-off methods
Dry cow therapy
Intramammary therapy
Systemic therapy
Blanket therapy
Selective dry cow therapy
Teat protection
Internal sealants
External sealants
Nutritional management
Effect of reduced dry matter intake
Immune system support
Environmental control
Pasture
Cubicle housing
Straw yard housing
Compost bedded pack barns
Precalving milking
Epidemiological control during the dry period
6. References
- Autor/es Luis Miguel Jiménez Galán
- Fecha de edición julio 2018
- Nº Páginas 82
- Encuadernación Tapa blanda. Wire-o
- Tamaño 17 X 11
- Idioma Inglés