The start of fattening is the most critical and risky period of beef cattle farming. Newly arrived animals face transportation stress, environmental change and ration change. Correct management of the first 30 days determines the success of the entire fattening period.
1. The Importance of the Beginning Period of Fattening
1.1 Critical Period
- The highest risk of illness and death in the first 30-45 days
- Respiratory diseases (BRD) peak period
- Romanian adaptation process
- suppression of the immune system
1.2 Goals of the Initial Period
- Minimizing animals' stress
- Adapting the rumen microflora to concentrated feed
- Preventing/early treatment of respiratory diseases
- Initiating and increasing feed consumption
- Supporting the immune system
2. Animal Adoption
2.1 Pre-Arrival Preparation
- Cleaning and disinfection of paddocks
- Control of feeders and waterers
- Quality dry herb ready
- Clean, fresh water
- quarantine area
2.2 Arrival Protocol
- Provide immediate access to water
- For the first 24 hours use only quality dried grass.
- Individual assessment (patient/vulnerable separation)
- Weighing and recording
- Electrolyte supplements if necessary
2.3 First 24-48 Hours
- Rest is a priority
- Unlimited water and hay
- Stress minimization (quiet environment)
- Sick animal observation
- Concentrated feed is not given yet
3. Stress Management
3.1 Sources of Stress
- Shipping stress: long journey, congestion
- Social stress: New group, hierarchy
- Environmental stress: New environment, climate change
- Nutritional stress: ration change
- Process stress: Vaccination, ear tag
3.2 Effects of Stress
- Increased cortisol → Immunosuppression
- Decrease in feed consumption
- Predisposition to respiratory diseases
- rumen dysfunction
- weight loss
3.3 Stress Reduction Strategies
- Short shipping times
- Rest time upon arrival
- Similar weight/age grouping
- Sufficient space (15-20 m²/head)
- Quiet, quiet operation
- Spreading transactions over time
4. Romanian Adaptation
4.1 Why is Adaptation Necessary?
- Rumen flora is different in pasture/roughage
- Concentrate feed requires different bacterial population
- Sudden change → Acidosis, swelling
- Romanian papillae should develop
4.2 Adaptation Process
| day | roughage | concentrated | Total KM |
|---|---|---|---|
| 1-3 | free dry herb | 0 | ~1.5% CA |
| 4-7 | free | 0.5-1kg | ~1.8% CA |
| 8-14 | Decreasing | 2-3kg | ~2.0% CA |
| 15-21 | Decreasing | 4-5 kg | ~2.2% CA |
| 22-30 | Minimum | 6-7kg | ~2.5% CA |
4.3 Adaptation Rules
- concentrate feed 10-15% every 3-4 days increase
- Gradually reduce the roughage ratio
- Monitor stool consistency (watery = very fast)
- Track feed consumption
- Watch out for signs of acidosis
5. Starter Ration
5.1 Starter Ration Characteristics
| Parameter | target |
|---|---|
| Energy (ME) | 2.4-2.6 Mcal/kg KM |
| crude protein | %13-15 |
| NDF | %25-30 |
| NFC | %35-40 |
| Roughage ratio | 40-50% (initially) |
| calcium | %0.6-0.8 |
| phosphorus | %0.35-0.45 |
5.2 Feed Raw Materials
- Roughage: Quality hay, corn silage
- Energy: Barley, corn (cracked), wheat bran
- Protein: Soybean meal, sunflower meal
- Fiber: Wheat straw, beet pulp
5.3 Additives
- Buffer: Sodium bicarbonate (0.5-1%)
- Ionophore: Monensin (rumen efficiency)
- Vitamin-mineral premix
- Yeast: Romanian function support
6. Water Management
6.1 Importance of Water
- Directly affects feed consumption
- Dehydration → Poor performance
- Critical after shipping
6.2 Water Requirements
- Daily: 30-50 liters/head (depending on temperature)
- Drinker area: 5-7 cm/head
- Clean, fresh, cool water
- 24/7 access
7. Health Management
7.1 Arrival Health Protocol
- individual examination
- Separation of sick/weak animals
- Parasite treatment (if necessary)
- Vaccination schedule (after stress subsides)
7.2 Vaccination Timing
- Not upon arrival, 7-14 days after
- Better immune response when stress is reduced
- Respiratory diseases vaccines are a priority
7.3 BRD (Respiratory Disease) Monitoring
Early symptoms:
- runny nose
- cough
- Rapid/difficult breathing
- Fever (>39.5°C)
- loss of appetite
- Depression, leaving the group
7.4 Daily Observation
- early in the morning
- Behavior around the feeder and drinker
- Breathing, stool, general condition
- Separate sick animals immediately
8. Immune Support
8.1 Immunity through Nutrition
- Vitamin E: 400-1000 IU/day
- Selenium: 0.3 ppm
- Zinc: 75-100ppm
- Copper: 10-15 ppm
- Vitamin A: 30,000-50,000 IU/day
8.2 Additional Supports
- probiotics
- Mayan culture
- Beta-glucan
9. Performance Monitoring
9.1 Initial Period Targets
| Parameter | target |
|---|---|
| Daily live weight gain | 0.8-1.2 kg (adaptation) |
| Feed consumption (30th day) | 2.5% live weight |
| disease rate | <%15 |
| mortality rate | <%2 |
9.2 Record Keeping
- Arrival weight
- Weekly/2 weekly weighing
- feed consumption
- Disease and treatment records
- death records
10. Common Mistakes
- ❌ Give concentrated feed immediately upon arrival
- ❌ Very fast ration change
- ❌ Inadequate water access
- ❌ Immediate vaccination upon arrival
- ❌ Overcrowding
- ❌ Noticing sick animals too late
- ❌ Mixing animals from different sources
Conclusion
Successful management of the fattening start-up period determines the overall fattening performance. Patience, careful observation and gradual adaptation are key.
Basic principles:
- Rest and water are priority upon arrival
- Gradual transition to concentrated feed (21-30 days)
- Stress minimization
- Daily health monitoring
- Early disease detection and treatment
- immune support
- Detailed record keeping
Bibliography
Duff, G. C., & Galyean, M. L. (2007). Board-invited review: Recent advances in management of highly stressed, newly received feedlot cattle. Journal of Animal Science, 85(3), 823-840.
Step, D. L., et al. (2008). Effects of commingling beef calves from different sources and weaning protocols during a forty-two-day receiving period on performance and bovine respiratory disease. Journal of Animal Science, 86(11), 3146-3158.