Table 1.

 

Palpable follicles and c.,l,'s before and duri treatment beginni at different cyclestages,

 
 

Incidence of heifers with Incidence of heifers
Cyclestage when Nr.of Duration of follicles % with C.l.'s %
treatment began animals treatment Day of treatment Day of treatment
days 0 4 S Sl 20816 0 4 B=S 1250116

T 80 " 80"  60L 60" 60 0 100" 10071 80 40

Early luteal stage
10 33 02" 6T == - 67 . BT 109, 3= -

(day of cycle: 1-6)

(day of cycle: T7=15) 10 0+ 50 0 = - 100 - 50~ 56% = -

Follicular stage
(day of oycle: 16-21)

17 5051003 100N 585 8% 83 07 LTs=55" 855

5
3
Full luteal stage 12 257 S5 B ISR AR ST SO B0 D 827100, :67s £33 8
2
6
5 10 60 20 100 = - 60 80 20 = -

 

1392

Percentage heifers Conception- Total conception
Duration of on heat, days post rate 1lst a,i, rate,lst and 2nd
Year Farm Group Nr of treatment Dose treatment a,i,
animals days mg/kg 142 3+4 5+6 7-10

1967 Sponga I A 13 17 T,7 61,5 30,8
1968 n VB 9% "
n  frby VI 14 "
" Sponga V A 19 e
1967 » T AS §12 "
" Rrby TIE % 515 x "
1968 Julita IVB 13 "
1967 Sponga I B 13 "
" " II B 12 "
1968 Julita IV A 14 10

X One heifer did not come on heat,
xx One heifer owing to technical reasons was not inseminated at the first heat.

2 Ty 1 33,3
4 11,1 88,9 1yt 44,4

42,9 50,0 61,5 11,4
5 100 42,1 52,6
s6 100 41,7 58,3
o 6,7 93,3 11,4 92,9
825 Il 5943 7649
100 61,5 76,9
100 41,7 75,0
Tl,4 14,3 14,3 35,7 57,1

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