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

Age..

“How does the milk production in the Israel Holstein-Friesian cow correlate with its age???”

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

Average daily milk yield by Lactation number of a Holstein dairy cow.

Average Dairy Milk in Litres by Age in months of a Holstein Dairy cow.

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.

Questions??

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.

THANKS TO YOU