Vle CONG. INTERN. REPROD. ANIM. INSEM. ARTIF., PARIS, 1968, VOL. Il

paid to litter size.
TABLE

Farrowing rate and average litter size of gilts treated with \
methallibure, pregnant mares' serum and chorionic gonadotrophin i

No. pregnant | Farrowing Total No,
Rate % pigs bo
80

 
    

No. treated gilts
inseminated

   
 

 
  
   

   
 

    
  

¥ 4 7.2
2 vi 78 8.0 1
3 16 76 6.9 |
5 13 6.6 |
6 8 .2
i 4 4.7
8 5 8.7
9 3 BST

3 Sel

S et

1 5ok

2 7.0

2 6.5

2 9.0

X 2.0

 

ACKNOWLEDGMENTS

Thanks are due to Imperial Chemical Industries Ltd. for supplies of
'AImax' and to Burroughs Wellcome & Co. Ltd. for providing Pregnant
Mares' Serum (PMS) and 'Lutormone®.

REFERENCES

Groves, T.W. (1967) Vet. Rec. 80 470-475.

Pitkjenen, I.G. (1955) Izv. Akad. Nauk S.S.S.R. Ser.biol. 1955 (3)
120, (Cited Anim. Breed. Abstr. 24, 51. No. 247).

Polge, C., Day, B.N., and Groves, T.W. (1968) Vet. Rec. In press.

1513