3. Gestation

a) restrict energy, but not other nutrients last 1/3 of gestation

b) increase intake for gilts, for sows a constant diet appears effective (12% CP recommended - NRC)

c) How to restrict Energy Intake

(1) Individually feed - no competition & feed to individuals pig need

(2) Feed high fiber - low energy diet (free-choice)

(3) Compounds that regulate appetite (3.5% CaCl in the diet)

(4) Every third day feeding

(a) gilts should have more access (24 hr. feeding) than sows (8hr. feeding)

(b) èDo not mix sows with gilts

4. Lactation

a) Demands of milk production must be met

b) Added fat (6-8%) 10-15% is optimal - but feed deteriorates and feed is sticky (use 0-10 day prior to and 0-21 day after farrowing)

Benefits	Considerations
- fat content of colostrums	- expensive
- concentration of pigs liver glycogen	- little effect on liter size at birth, birth wts., or weaning wts.
- slight in piglet carcass fat at birth	(survivability??)
- improves baby pig survival

II. Market Pigs Protein is the most important nutrient for swine rations, the key is proper amino acid balance. Limiting amino acids in typical diets include LYS, TRP, THR, MET

Limiting Amino Acids in common feedstuffs

	1^st	2^nd
Corn	LYS	TRP
High-lys-corn	TRP	LYS
Barley	LYS	MET
Wheat	LYS	THR
Sorghum	LYS	THR
SBM	MET&CYS	THR
Corn/SBM	LYS	THR (MET)

1. Prestarter fed to early weaned pigs (prior to 3 wk.) To fortify the diet of pigs not receiving enough milk

2. Starter

a) 3^rd to 6^th week of age; should be used as a creep ration

b) 18-20% CP

c) contains ~10-20% dried whey to enhance digestible carbohydrate

d) at least ½ of the grain should be corn, & add appropriate antibiotic

3. Grower-Finisher

a) grower - (14-16% CP) usually fed from 40-120 lb.

b) finisher - (12-14% CP) 120 lb. to market