1.
J Reprod Fertil
; 84(1): 43-50, 1988 Sep.
Article
in English
| MEDLINE
| ID: mdl-3184059
ABSTRACT
Ewes that were untreated, fed lupins or fed lupins and immunized against androstenedione were artificially inseminated. The percentage of ewes pregnant at 36-45 days after insemination (fertility) was 8% higher in ewes that had more than one ovulation than in those that had only one ovulation. Maximum fertility was achieved with 50 x 10(6) spermatozoa and this did not vary with the number of ovulations that ewes had. Among the pregnant, twin-ovulating ewes, embryo survival increased as the number of spermatozoa inseminated increased from 25 x 10(6) to 400 x 10(6). Immunization of ewes against androstenedione increased ovulation rate but reduced fertility, and reduced embryo survival among twin-ovulation ewes.
Subject(s)
Androstenedione/physiology , Fertility , Insemination, Artificial/veterinary , Ovulation , Animals , Female , Fetal Death , Male , Pregnancy , Sheep , Spermatozoa/physiology
2.
Theriogenology
; 8(4): 183, 1977 Oct.
Article
in English
| MEDLINE
| ID: mdl-924006
Subject(s)
Blastocyst/physiology , Fertilization , Ovulation , Prostaglandins, Synthetic/pharmacology , Animals , Female , Male , Time Factors
3.
Aust Vet J
; 45(2): 78-9, 1969 Feb.
Article
in English
| MEDLINE
| ID: mdl-5813401
4.
Aust Vet J
; 45(1): 39, 1969 Jan.
Article
in English
| MEDLINE
| ID: mdl-5812803