Nutrition for life stages (part 1)

Question 1

nutrition in boars influences what

Answer 1

libido
structural soundness
longevity
sperm production
semen quality

Question 2

what group is most often overlooked in terms of nutrition requirements

Answer 2

boars

**often fed gestation diet
**limit fed

Question 3

the primary goal for boars used in natural services is to minimize ________________ to allow boars to _____________

Answer 3

mature body weight
mate with smaller gilts/sows

Question 4

overfeeding boars can impair ___________ and lead to ______ problems and decreased ___________

Answer 4

libido
reproductive
length of service

Question 5

for natural service boars, is energy intake restricted

Answer 5

yes, slightly

still maintain high AA,vitamins, and minerals

Question 6

the nutrition program for AI boars should be managed to

Answer 6

optimize sperm production and quality of semen

Question 7

T/F there is a reduced emphasis placed on minimizing mature body size for AI boars compared to natural service

Answer 7

true

**doesnt matter since they use a mounting dummy

Question 8

feeding low protien to AI boars leads to

Answer 8

low libido

Question 9

too much fat causes what to happen in AI boars

Answer 9

harder to mount dummy
impact sperm production

Question 10

T/F boars require the same minerals and vitamins in similar amounts as gestating sows

Answer 10

true

Question 11

zinc and selenium are slightly elevated as they are directly involved in

Answer 11

sperm production

Question 12

vitamin C in some cases is added to boar diets to help offset

Answer 12

negative effects of heat stress

Question 13

what does zinc do for boars

Answer 13

role in testicular function and growth

Question 14

what does selenium do for boars

Answer 14

impact sperm concentration and fertility

Question 15

what do omega 3 fatty acids do for boars

Answer 15

positively influence boar fertility by improving sperm viability and motility

**alive longer, swim better
**add fish meal

Question 16

this is a beta-adrenergic agonist that is approved for inclusion in finishing diets, increases fat free lean and can reduce fat deposition

Answer 16

ractopamine hydrochloride (paylean)

Question 17

ractopamine hydrochloride (paylean) can increase fat free lean by how much

Answer 17

25-35%

Question 18

Ractopamine hydrochloride is typically fed _______g/ton of complete swine finishing feed containing at least _______%CP for the last __________pounds of gain

Answer 18

4.5-9
16%
45-90 lbs

Question 19

because of the increase protein deposition from ractopamine hydrochloride ___________ concentrations to support the ______________ need to be increases

Answer 19

amino acid
improvement of lean gain

Question 20

how much of a return is there from ractopamine hydrochloride

Answer 20

$2/pig

Question 21

advantages of ractopamine hydrochloride

Answer 21

increase ADG
increase lean gain
increase dressing %
lower backfat
better feed efficiency
fewer days on feed

Question 22

disadvantages of ractopamine hydrochloride

Answer 22

meat less tender
increased heart rate (PSS)
more sensitive to rough handling

Question 23

what countries does not allow their pork to have ractopamine hydrochloride

Answer 23

European union
Russia
china

Question 24

pigs eat to ______________________

Answer 24

meet their energy requirements

Question 25

if the diet is high in energy, by adding fat, pigs will

Answer 25

decrease their feed intake

Question 26

if the energy density of the diet is diluted by feeding fibrous feedstuffs what will happen

Answer 26

pigs will consume more

Question 27

a high energy will cause intake to decrease, therefore what needs to happen to nutrient concentration

Answer 27

need to be increased to maintain constant daily intake

Question 28

a diet low in energy should contain ________________________ because feed intake will be increased

Answer 28

lower concentration of nutrients

Question 29

what kind of diet is not recommended for finishers

Answer 29

low energy density diet

Question 30

separate sex feeding will ________________________

Answer 30

more closely match nutrient concentration to the requirement of the pig

Question 31

_______________ typically have a higher feed intake capacity without a larger potential for lean gain, thus diets should be fed that are somewhat lower in _________

Answer 31

barrows amino acids

Question 32

T/F gilts are fed an earlier phase diet than barrows at the same body weight

Answer 32

true

Question 33

since gilts are fed an earlier phase diet than barrows at the same body weight, they can be fed a ______________________ for the first phase in the finisher, followed by ______________ for their first diet

Answer 33

more nutrient dense diet the diet that barrows consumed

Question 34

do gilts have a high capacity for lean gain

Answer 34

yes

Question 35

barrows have a higher feed intake capacity, less lean gain, and diets lower in AA concentrations does this mean they will consume more or less feed per day

Answer 35

more

Question 36

phase feeding matches

Answer 36

diets with specific nutrient compositions to the growth of the pig

Question 37

phase feeding matches

Answer 37

diets with specific nutrient compositions to the growth of the pig

Question 38

phase feeding minimizes instances of

Answer 38

overfeeding wasting costly ingredients underfeeding not meeting the nutritional requirements

Question 39

phase feeding will reduce the overall

Answer 39

diet cost per day

Question 40

each additional phase in phase feeding will improve

Answer 40

profitability reduced nutrient excretion

Question 41

Feeding high levels of a protein that pigs cant utilize causes

Answer 41

increase in nitrogen excretion increases run-off problems

Question 42

feeding low levels of a protein that pigs cant utilize causes

Answer 42

decreases rate of gain increased time on feed

Question 43

what kind of phase feeding is used most often

Answer 43

6 phase feeding program

Question 44

SID lysine requirement is closest to what phase program

Answer 44

6 phase feeding program

Question 45

what kind of phase feeding is used least often

Answer 45

2 phase feeding program **doesn't meet requirements

Question 46

feed represents approx _______% of the total cost of production. Finishing pigs are fed ________

Answer 46

65-75 ad lib

Question 47

why are finishing pigs fed ad lib

Answer 47

helps encourage them to eat as much as they want = increase in gain/have high levels of ADG

Question 48

the nutritional requirements __________ as the animal grows heavier due to changes in ___________________

Answer 48

decrease maintenance requirement and the composition of growth