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Class Notes for Animal Science at University of Saskatchewan

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ANSC 460.3 Lecture Notes - Lecture 14: Pregnancy Rate, Obstructed Labour, Palpation

Reproductive Management Herd Fertility Infertility and reproduction is the highest reason for culling Inverse relationship between milk yield and fertility milk production has gone up in dairy population and fertility has...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 13: Udder, Mammary Gland, Antimicrobial Resistance

Vacuum problems if vacuum level inside unit is too high o unit creeps up teat, stops milk flow o teat lesions occur and cause risk of mastitis o teat congestion and teat damage if vacuum too low o milking unit falls off ...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 12: Udder, Pressure Measurement, Zebu

Milking Machines and Milking Parlor Design HandMilking Systems: Developing world Cannot milk fast enough for milk ejection physiology o Slow o Inefficient Lack of selection for handsized teats Handmilking Bos indicus ca...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 11: Antibody, Pregnancy, Cell Division

Dry period and mammary involution dry period o nonlactating period prior to an impending parturition o optimizes milk production in subsequent lactation dry period at least 4550 days o 2025 reduction in milk yield with n...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 10: Colostrum, Galactose, Rumen

Mammary Gland Anatomy and Milk Synthesis Milk secreting organ: one udder with four mammary glands Exocrine gland that secreted milk into duct system Provides easy access to milk for the newborn Suspended outside wall of...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 9: Short Ribs, Adipose Tissue, Ketosis

Body condition score: visual observation palpation o rump area (hip bones, pinbones, tailhead) amount of fat cover over vertebra have 2 people score independently and take mean BCS typical system use scale 15 1 = emac...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 8: Choline, Ketone Bodies, Niacin

FLS Accumulation of fat in cows liver Rate of TG synthesis is greater than TG export as VLDL Impairs liver function o Gluconeogenesis, ureagenesis impaired Fat stored reduced when in positive energy balance very littl...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 7: Acetoacetic Acid, Lipoprotein, Citric Acid Cycle

Displaced Abomasum Incidence in dairy hers 125 8090 occur in early lactation true stomach normally lies on floor of abdomen what is a displaced abomasum abomasum filled with gas and moves to left or right trapped betw...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 6: Palatability, Subcutaneous Injection, Zeolite

Metabolic disorders in Dairy cows nutritionallyrelated disorders Metabolic disorders occurs primarily in early lactation o due to stress, drastic changes in nutritional requirements energy metabolism related diseases: o...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 5: Rumen, Psps Pekanbaru, Overconsumption

Diagnosis of SARA time of sampling: o TMR fed once a day then take sample 58 hours after feeding o Forage and concentrate fed separately then take sample 25 hours after concentrate Sample 10 cows per group If >30 have p...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 4: Lipopolysaccharide, Hydrogenation, Bulk Tank

Rumen acidosis in Dairy Cows by definition it is not a metabolic disease but is a digestive upset feeding high starch diets feeding more processed grains can be a problem as well feeding high fermentable carbohydrates bact...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 3: Rumen, Adipose Tissue, Postpartum Period

there are many types of equipment available to push up feed hydraulic feed pushers have not been widely adopted, partly because the tack and plough can interfere with crossovers and with feed delivery the juno feed pushe...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 2: Silage

Adding ingredients to the TMR mixer: order of ingredients is important auger or reel mixers o grains, protein supplements o small inclusion feeds (mineralvitamin premixes, feed additives) o chopped hay and ensiled forage...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 460.3 Lecture Notes - Lecture 1: Delaval, Ad Libitum, Mammary Gland

Feeding systems for Dairy Cows Goals of feeding systems for dairy cows: Provide proper amount balance of nutrients to all cows o Optimize rumen fermentation and health o Steady supply of nutrients to microbes and tissues...

Animal Science
ANSC 460.3
Tim Mutsvangwa
ANSC 313 Lecture Notes - Lecture 1: Portuguese Water Dog, Tibetan Terrier, Golden Retriever

Ethical mate choice Example: homozygous dominant lethal Chinese crested Hair missing on much of body Hairlessness is a homozygous lethal pp= powder pu Pp= PP= lethal Examination of parents must be through because of comple...

Animal Science
ANSC 313
Fiona Buchanan
Laboratory Basics - Reference Guides

Lab safety is the cornerstone principle in this compelling Guide. All international safety symbols are clearly defined, with all basic lab glassware and equipment depicted by text description and diagrams. The Guide also p...

ANAT - Anatomy
ANAT 14
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