agrostudies final research presentation
TRANSCRIPT
Life age vs Milk production
Holstein Friesian cow
GROUP II
Givat Hayyim Dairy farm
Supervised By Mr. Dan Bachrach
CLASS III
Presentation outline
• Israel Holstein-friesian cow• Factors affecting milk quantity and quality• Research question• Objectives,hypothesis• Methodology• Research results, Analysis and discussion• Limitations, conclusion, questions and
acknowledgements.
• highest milk producers
• distinctive black and white spots
• from local breeding stock
• Israel Genetic Improvement system.
Israel Holstein Friesian Cows
Factors affecting milk quantity and quality in Holstein Dairy cows.
Age.
Individuality.
lactation stage.
Breed.
Estrus.
Pregnancy.
Temperature.
Humidity
Hypothesis:
Milk production in Holstein-Friesian dairy cows correlates positively with the age up to a maximum and there after a negative correlation occurs.
Main objective
To determine, the correlation between the age and milk production in Holstein-Friesian dairy cows.
Other objectives
the age at which Holstein-Friesian cows first calve down daily average maximum milk production per cow age at which a Holstein Friesian cow reaches its highest peak in milk production.
Methodology.
Work plan,.
activity period personality
planning 24-28th/11/2014 Group 2 members
Research proposal writing 30th -27th 2014 Group 2 members
Submission of proposal 29/12/2014 Omia Razaki Iganachi
Data collection January 2015 Bunanyike Collins
Statistical analysis and report writing Feb-May 2015 Group 2 members
Report submission June 2015 Omia Razaki Iganachi
Preparation of a Power point presentation July 2015 Precious and Isaac
Presenting the power point August 2015 Group 2 members
Data collection;
GIVAT HAYYIM DAIRY FARM. meuhad Kibutiz over 480 lactating Holstein Friesian cows on this farm.
sample space, 40 cows (partriated in a month's time)
Randomly selected.• fed at the same time,
same type and proportion of feed,
• same milker, milking machine and time of milking.
• for 30days - daily data collection.
Results.
Lactation Tag Average Daily Age in Age in years
number milk(ltrs) months
2 4,612,186 46.20 37.30 3.11
2 4,613,387 49.40 37.7 3.14
2 4,613,090 45.90 37.70 3.14
2 4,613,072 55.40 38.40 3.20
2 4,604,974 47.80 39.00 3.25
2 4,606,386 53.70 39.20 3.27
2 4,605,635 48.60 39.30 3.28
3 4,597,758 51.00 49.70 4.14
3 4,612,605 47.40 50.50 4.21
3 4,602,821 52.20 50.80 4.23
3 4,613,561 53.50 51.10 4.26
3 4,612,515 51.80 51.70 4.31
Givat Hayyim Dairy farm
Discussion of results
Factors that lead to the increase in milk yield in relation to age.
Digestive system/rumen size increases
Mammary gland development.Udder development – increase cell
size and numbers (Alveoli ) increase in milk.
Body weight gain.
Result Discussion cont'd
Factors that lead to the decrease in milk yield in relation to age.
With time,a) milk secreting cells
degenerates (Alveoli)
b) Fertility problems Retained placenta, anoestrousmetabolic diseases (ketosis)
c) Incidences of diseases Mastitis
Conclusion
• Milk yield in Holstein-Friesian dairy cows correlates positively with the age up to a maxmum and there after a negative correlation occurs at the age of 4-5 years.(polynomial relationship)
Recommendations.
• Attention to fertility
• Grouping animals ( maturity time)
• Culling older animals (after 4-5 calving)
• Proper management practice (Feeding, health care for early maturity.
Acknowledgements.
• We acknowledge all our lecturers
• Mr. Dan Bachrach, and Agrostudies team
• Givat Hayyim Farm
• All group members and course mates
• And above all God Almighty.