Penampilan Reproduksi dan Pertumbuhan Tikus Putih (Rattus rattus)

I W T A l?I3T"uETMT&J ( I 386), 11 g

94

-

103

mBMP1LAN. RXPRODUKSI DUT P Z R m U I W . T TIiiZTS PUTDI ( h t t u s r a t t u s )

.

-

Oloh

Falcultas Poternakan (1 ) FaIcultss i<edol:leran H e m ( 2 ) I n s t i t u t Portmian' Eogor

&3%PRA.CT0 Zighty fivo h o d s of white r a t e s ( ~ a t t u s r a t t u s ) were ~ ~ e d t o study on'tho growth &nd reproduction porform~~nco.

F i r s t mating i n r ~ r n l c i s a t 11 woclcs of age/l80

-

220 g of body weight. The averago period of estrous i s

8

days, gastation period is 21 dEqfs. first b i r t h i s a t Idr wooks of ago and tho intorval i s

58

&s f o r young and 82 days f a r old fcnaloa. L i t t o r s i z e 'and b i r t h

wef&t

axe

4.5

+

1.9 h o d s and 5.4-1

+

1.03 g f o r old male X old female3

7.

0

2

1

4

~ Q J ~ S - ~ I I ~

4.49

2

0.46 g fo; old malo

x

young fomale j

and

6.

8

+

2.7 heads and 4.81

+

0.51 g for young malo X young fomale. Overall

-

mean of b i r t h weight Ts 4.99

+

0.80 g and that of l i t t o r s i z e i s 6.0

2.4 haads, Sex r a t i o (malo P-fomale) from 16 t i n o s of b i r t h i s 155 :

100. _{We- weight} i s 31.6

-

+

6.9 g a t 28 days of age.

Young has no hair. Skin i s pink i n colour, Ems and eyo are oloso at birth. Ba,rs mo open a t 11 wooks and eyes a r e a t 14.75. f 0.96 da;ys of Y o u n g s loam tho cage a t 18.00

+

1.41 of age.

Tho growth curve shows that the i n f l ~ x i o n i s roachod a t 76.72 g of body m i g h t ( a t 6 weeks of ago). For t h o a o c o l e r a t d owth, the bi1-Y gain i s 1.71

2

0.78 g. Tho curve i s

wt

= 5.3361 00007%.

For

deooo~exata3 growth tho d a i l gain i s -2.30

+

0.40 go Tho cum0 i s '

(284

-

Y

3 = 4 6 6 . ~ 6 b ~ e 4 e o 1 8 t e Relafivc gr&-tl~

(OW)

decreases

2.43

p0-t k t h increase ono day i n ago. '

W

RINGKASAN. Ponolitian untuk ruompola jari ponampilan roproduksi d m

fumbuhan

t e M

dildmkan pa,da

85

e l m t i k u s putill ( b t t u o

m t t ~ ) .

Induk &pat d i k a w - un-t;uk port- kalinya paAa

urmu:

11

-pads bobot tubuh 180

-

220 go Lama masa lmwin pada induk t i k u s PUta

b~rkisaf: delapan hari, l a m bunting 21 hari d m BoMulaSc p~rtama psda

umur

14 m h g g u , srzdand.can untuk b i b i t tua 82 hari.

T e a P a t perm ratam bobot lahirg porlsawjnm antara jantavl t u a d e n g a lmtina nongbafiilka..n anal;: dongan bobo-t lahir 5.41

+

1 403 g

j d a h

d

c

N r kolahiran

4.5

+

1.9

ckor, jantan

tua

d e w %tins

mudEI

menghasilkan anak den- bobot-lzhir

4.49

+

0,46 g dan jumlah &

7.0

&

1

a 4

okor, dan j a e m ~ d s bet-ina mudn rnen&asilkan Ewzak dm