DAIRY CATTLE PRODUCTION AND EFFECT OF MILK ON HUMAN HEALTH - - PowerPoint PPT Presentation

DAIRY CATTLE PRODUCTION AND EFFECT OF MILK ON HUMAN HEALTH

Katherine Swanson M.S. PhD Candidate Oregon State University

OREGON STATE UNIVERSITY 1

Transition Cows

• 4 weeks before and 4 weeks

after calving

• More susceptible to diseases
• Cost $100+ per cow
• Decreased DMI, increased
• xidative stress
• Depressed immune function

OREGON STATE UNIVERSITY 2

Blackberry Antioxidants

• Contain anthocyanins and phenols that

can function as antioxidants

• Phenols can inhibit oxidation of lipids
• Help maintain immune cell structure

OREGON STATE UNIVERSITY 3

Materials and Methods

• 24 Holstein and Jersey cows, 2st-5th

lactation

• Cows randomly assigned to one of

three groups: control, 2oz, or 4oz

• Fed diets using Calan gate in AM

for 4 weeks prior to and following calving

• Measured immune status,

metabolic health, and reproductive function

OREGON STATE UNIVERSITY 4

F irs t H e a t F irs t B re e d in g D a ys O p e n 5 0 1 0 0 1 5 0 2 0 0

R e p ro d u c tiv e P e rfo rm a n c e

P o s tp a rtu m (D a y s ) C o n tro l L o w B B P H ig h B B P

High BBP cows showed first heat 12 d earlier, were first bred 15 d earlier, and were open for 49 d less than Control cows, as more cows tended to be confirmed pregnant from their first breeding

OREGON STATE UNIVERSITY 5

7 1 4 2 1 2 8 1 2 3 4

P ro g e s te ro n e

P o s tp a rtu m (d a y s ) P ro g e s te ro n e (n g /m L ) C o n trol L o w B B P H ig h B B P

7 1 4 2 1 2 8 2 0 4 0 6 0

E s tra d io l

D a y s (P o s tp a rtu m ) E s tra d io l (p g /m L )

C o n tro l L o w B B P H ig h B B P

OREGON STATE UNIVERSITY 6

Conclusions

• Some improvement in metabolic status;

significant improvement in reproductive function

• Utilize blackberry waste to save farmers

and processors money

OREGON STATE UNIVERSITY 7

Milk Consumption

• Down 52 lbs/person in last 20 years (USDA 2017)
• Production up 2,700 lbs/cow/year in last 10 years (USDA 2017)
• Lactose intolerance
• Availability of “healthier” products
• Fear of link to obesity? Protein, Ca, Saturated Fat?

OREGON STATE UNIVERSITY 8

Milk and Obesity

• 12 male Duroc-Berkshire crosses 8-9

weeks old

• Fed iso-caloric supplement of milk or

sugar water for 11 weeks

• Measured ADI, ADG, FCR, weight,

back/neck fat thickness

OREGON STATE UNIVERSITY 9

OREGON STATE UNIVERSITY 10

Overall

Milk = no effect on body weight or adipose tissue in growing piglets

OREGON STATE UNIVERSITY 11

Acknowledgements

• Dr. Gerd Bobe
• Dr. Massimo Bionaz
• Oregon Raspberry and Blackberry

Commission

• USDA
• Townsend Farms, Troutdale, OR
• Mark Keller
• Matt Kennedy
• All of my interns and dairy and swine

center employees