Beef 1 - Emily Flashcards

1
Q

What is a cow-calf operation?

A

-Basic production unit
-Small herds
-Forage-based

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2
Q

What is backgrounding/stocking?

A

-Intermediate phase
-Feed cattle for growth before feedlot
-Short period and moderate weight gain
-Forage-based

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3
Q

What is a feedlot?

A

-Large operations
-Fed in pens
-Grain-based

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4
Q

What is the main goal of a cow-calf operation?

A

Produce 1 calf per year

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5
Q

What is the typical diet in a cow-calf operation?

A

Forage-based
-Cheap
-Enough nutrients to support reproduction
-Supplementation as needed

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6
Q

What is the most common time for calving?

A

Spring

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7
Q

How old are calves when they start grazing?

A

~3-4 months old

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8
Q

What are the two types of cow-calf operations?

A
  1. Purebred
  2. Commercial
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9
Q

What does a purebred cow-calf operation consist of?

A

-Breeding stock
-Intensive management
-More supplemental feed
-Calving season in winter

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10
Q

What does a commercial cow-calf operation consist of?

A

-Market cattle
-Less intensive
-Less supplemental feed
-Calving season in spring

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11
Q

Beef dams will typically produce colostrum of a _______ volume but with ________ IgG concentrations

A

Lower; higher

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12
Q

When should there be intervention for calves?

A

-If the calf hasn’t gotten up and nursed within 2 hours of birth
-Dystocia calves

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13
Q

What can you do to estimate colostrum and serum IgG?

A

Brix refractometry

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14
Q

A colostrum replacement should have a minimum of ______ IgG

A

100g

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15
Q

What should the average daily gain of a beef calf be?

A

0.6-1.4 kg/day

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16
Q

What is creep feeding?

A

Supplementation before weaning to increase ADG

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17
Q

What are some reasons we’d want to creep feed?

A

-Milk and pasture are not enough (droughts)
-Increased stocking density in an area
-Fall-born calves (relies more on dam’s milk because no pasture)
-Pre-weaning program

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18
Q

Approximately how much should a calf weigh at 7 months of age?

A

240 kg

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19
Q

Most calves are sold within _____ after weaning

A

60 days

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20
Q

What are 3 weaning methods?

A
  1. Abrupt
  2. Two-stage
  3. Fence-line
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21
Q

What is abrupt weaning and what are the pros and cons?

A

Cows are moved to a new location out of sight and sounds from calves

Pros: Calves are handled once, fewer equipment/labour
Cons: Calves eat less (pen wandering, brawling), increased treatment rates

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22
Q

What is two-stage weaning and what are the pros and cons?

A

1st calves wear nose paddles; 2nd nose paddles are removed (4-7 days) and calves are separated from dams

Pros: Improved feed intake, decreased treatment rates
Cons: Nose paddle costs, calves need to be handled twice

23
Q

What is fence-line weaning and what are the pros and cons?

A

Cows and calves are separated for 3-4 days by a fence but can still see, hear, and smell each other

Pros: Calves are handled once, improved intake, decreased treatment rates
Cons: Extra fencing

24
Q

What is pre-conditioning?

A

Certain treatments that facilitate transition

25
Pre-conditioned calves are.....
-Vaccinated -Dewormed -Castrated -Fence-line weaned -Trained to eat from a bunk and drink from a trough
26
What is beef-on-dairy?
Breeding dairy cows with beef bulls
27
What are the 3 stages of beef-on-dairy?
1. Rearing as dairy calves 2. Moved to rearing operations at 10 weeks old 3. Feedlot (for 1 year)
28
What kind of diet should replacement bulls be fed?
A high-energy diet (but make sure to not overfeed)
29
What is the most important period for bull development?
Prepubertal (nursing bull calves)
30
Post-weaning nutrition has a ______ effect on sexual development
Small
31
What kind of diet should replacement heifers be fed?
A forage-based diet
32
What is the goal with feeding replacement heifers?
60% mature body weight at breeding (13-15 months)
33
What is the consequence of inadequate nutrition for replacement heifers?
More heifers will be open at the end of breeding season
34
How many days post-partum should a cow become pregnant again at?
~80 days
35
What is a reason for postpartum anestrus?
Inadequate nutrition
36
What are the 3 beef cow groups?
-Heifers -Primiparous -Multiparous
37
What is a heifer?
-Never calved -Earlier breeding season than mature cows
38
What is a primiparous cow?
-A cow that has calved only once before -Still growing, with a calf nursing during breeding season
39
What is a multiparous cow?
A cow that has had more than one calf -Maintenance, with a calf nursing during breeding season -Least demanding group
40
What are 2 strategies for greater nutrient intake?
-High quality pasture -Protein/energy supplementation
41
How do we know if cows need more energy?
BCS
42
What are some consequences of an overconditioned cow?
-Mobility impaired -Increased risk of calving problems (dystocia)
43
What are some consequences of an underconditioned cow?
-Weak -Stress intolerant -Poor calf performance due to decreased milk supply
44
Why would we wean a calf early?
If the cow is underconditioned, weaning earlier could improve the cows BCS
45
What is fetal programming?
The process by which environmental factors during pregnancy can influence the development of the fetus and have long-term effects on the offspring's health, even into adulthood
46
What is the fetal stage crucial for?
Myogenesis and intramuscular adipocyte generation (since muscle fibers do not increase after birth)
47
What is extended grazing in winter feeding?
1. Stockpiling 2. Swath grazing 3. Bale grazing 4. Crop residues
48
What are some strategies employed during winter feeding?
-Limit daily machinery and fuel use -Lower overall winter feed costs -Better spread of manure -Add organic matter and nutrients to the soil
49
What is stockpiling?
-Saving pasture for grazing in fall/winter after a killing frost - eliminates the potential for forage to regrow -Deferred grazing
50
What is swath grazing?
-Annual cereal before killing frost - barley/oats -Swaths are left on the field for the cattle to graze -Electric fence to improve feed utilization -Challenge with thaw cycles, ice, and deep snow
51
What is bale grazing?
-Pre-setting of bales in october -One row at a time - portable electric fence
52
What is crop stubble?
-Leaf and stem after harvesting grains (mature plant) -Better access in years of heavy snowfall -Fed silage - supplement
53
What are 4 common nutritional disorders of grazing cattle?
1. Frothy bloat 2. Hypomagnesemia (grass tetany) 3. Nutritional Muscular Dystrophy (white muscle disease) 4. Nitrate poisoning