Animal Feeds and Feeding Unit 4

Step down weaning is used to mitigate the impacts of high plane of nutrition of feeding (know pros and cons),

True

What is MBW (dairy cattle) (dog or cat = metabolic body weight),

Mature body weight

Ideal body condition score for heifers at breeding,

3 in the middle to optimize breeding

Formulating dairy rations,

True

Lactating cows gestation = %50+ of total energy requirement,

False lactation = %60 energy requirement

NRC and NASEM models are foundation for feed formulation software in dairy cows,

True

Microbial fermentation is ___ of horses energy requirement,

60% (microbes in hindgut produce a lot of energy for animals)

Horse requirements are hard to meet with igh quality hay/pasture,

False they can only eat hay/pasture and be fine

Laminitoes can be caused by non-structural carbos in hindgut,

True overflow digestive system with starch/sugars, rapid fermentation, acidosis/acid buildup, endotoxin release, trigger inflamation and distrupt blood flow to hoof, causing laminitis

What is NCS

Non structural carbohydrates

____ energy requirement beef needs for maintience,

70 (so beef cows are inefficient bc so few of energy requirement towards growth)

Protein requirement of ruminants is metabolizable protein,

True

What is metabolizable protein,

Protein entering small intestine, which is what the animal can actually utilize. Accounts for bypass protein too.

Recieving diets for feedlot cattle are low in fiber,

False theyre high in fiber and low in concentrates to prevent acidosis, particularly bc theyre in high stress situation and you don’t know what they had eaten before

Which ingredient has a high concentration of xanophylls,

Marigold meal

Poultry are fed diets with higher 5% fish meal,

False because it changes smell of eggs to smell like fish

What are xanthophyls,

Cartenioid pigments making colors, (egg yolk color comes from this)

Ideal ca:p ratio for layers,

10:1

Fat is economical when its ____X corn price,

3 (susually it’s expensive, but if it gets that low it’s economical bc of how much energy it provides)

Pigs eat to protein need, False, they eat to energy needs

Sucrase is high before weaning, False

Enzyze high in digestive tract of pigs at weaning, Lactase

Sucrase is high after weaning, True no longer need lactase bc no more milk, so use sucrase and protease to digest carbohydrates

Pigs eat less in summer, so decrease nutrient conc Of diet, False, must increase nutrient conc.

Gilts have higher nutrient conc. Than barrows, True

Body condition of gestating sows is controlled by, Energy

If you want to decrease the energy content of the diet, add ___, fiber