Vie CONG. INTERN. REPROD. ANIM. INSEM. ARTIF., PARIS, 1968, VOL. I

TABLE 2 1pdeis. The effect of PMS on lambing

percentage
Group Number Ewes Lambing % of ewes
of ewes lambing % with 3 or
more live lamis
A (1500 e 63 (97%) 198 25
PMS) N.S. ¥k
B (O PMS) 60 56 (93%) 143 0

 

TABLE 3 BXPT 42 The effect of day of mating in
relation to sponge withdrawal

 

 

Treatment No. of Ewes Lambs Meanlitter
ewes lambing born size
group I (1st oestrus) 2L, 19 (79%) L5 2.37
N.S. N.S.
Group II (2nd oestrus) oL, 22 (92%) L7 20l

 

TABLE L4 The effect of the ram on the mean litter size
of superovulated ewes

 

 

Ram Mean % of % of
litter ewés with ewes with
size singles 3 or more
lambs
1966-7
Ram S.81 2.86 3.0 N.S B8 bily Newton & Betts
Other Rams 2.28 SRR s SRS (in press)
1967-8
Ram S.81 2.67 0 N.S L6.6 N.S Expt. 1
Other Rams 2.29 D Db S ¥R s N
1967-8
Ram S.81 2650 5 ¥ 45.0 N.S HIoEp G2
Other Ram 2.00 38.1 DB MG e
Total
Ram S.81 258 7.0 Sl D1 & Combined
Other Rams 2528 2Dl B2, Data

 

¥ P <005 R P OO0 SBNS ST=SN o/t SHign 1Rl cani

1493

43