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Texte intégral

(1)

ÉVALUATION

DU

BESOIN

EN LYSINE I)U

PORCELET SEVRÉ

J. LOUGNON

A. BRETTE

Société de Chimie

biologique

A. E.

C.,

03 -

Commentry

RÉSUMÉ

Une

expérience

est réalisée en vue de

préciser

les besoins en

lysine

du

porcelet

sevré. 24

«

paires

» de

porcelets âgés

de 6 semaines et

pesant

en moyenne 12

kg

sont

répartis

en 3 lots

expéri-

mentaux. Les animaux consomment ad libitum

(pendant

28

jours)

l’un des 3

régimes

contenant

0,8

5

. 0

,

95

ou 1,05 p. 100de

lysine, identiques

par ailleurs.

La consommation est peu différente d’un lot iL l’autre. L’aliment contenant o,95 p. 100 de

lysine (lot II)

assure une vitesse de croissance et une efficacité alimentaire

significativement supé-

rieures à celle des animaux recevant les

régimes

à

o,8 5

p. 100

(lot I)

ou 1,05 p. 100

(lot III).

Le

gain

de

poids

moyen

quotidien (g)

et l’indice de consommation sont ep moyenne les suivants : lot 1 :

59 6,

2,11; lot II :

6 50 ,

r,9!; lot III :

6 1 r,

2,04.

L’aliment II a ure teneur ep

lysine

de 3,0 g par kcal

d’énergie digestible,

3,1 g par kcal

d’énergie métabolisable,

4,5 g par kcal

d’énergie

nette. Les

porcelets

de ce lot II ont

ingéré

en

moyenne

m,8

g de

lysine

par

jour.

SUMMARY

ESTIMATION OF THE LYSINE

REQUIREMENT

OF WEANED PIGLETS

An

experiment

was carried out in view to

specify

the

Lysine requirements

of weaned

piglets.

24 «

pairs

a of 6 weeks old

weighing

about i

kg

were divided into 3

experimental

groups

(treatmentsl.

The animals were fed ad libitum

(during

28

days)

with one of the 3 diets

containing 0.8;;, o.o!

or 1.’)5 p. 100

Lysine.

These diets were similar as for the other

components .

The

consumption only

differed a little from one treatment to another. With the feed contai-

ning

0.95 p. 100

Lysine (treatment II),

the

growth

rate and food

efficiency

were

significantly higher

than those of the animals fed with diets at

o.8g

p. 100

(treatment I)

or 1.05 p. 100

lysine (treatment III).

On an average,

daily

mean

gain (gram)

and the food conversion ratio were as

follows :

The feed II had a

Lysine

content of 3.0 g per kcal.

digestible

energy, 3.1 g per kcal metabo- lizable energy, 4.5 g per kcal net energy. The

piglets

of treatment II had a mean intake of i i.8 g

Lysine

per

day.

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