THE SYNCHRONIZATION OF OESTRUS IN CATTLE WITH PROGESTAGEN-IMPREGNATED INTRAVAGINAL SPONGES
نویسندگان
چکیده
منابع مشابه
Synchronization of Oestrus in Sheep by Intravaginal and Subcutaneous Application of Progestin Impregnated Sponges
Shelton ( 1964) has described the testing of a number of progestins in the search for one which meets the specifications laid down by the author (Robinson ( 1960) as being necessary for the practical control of ovulation in farm animals. He found one compound, namely 17a-acetoxy-9cr fluoro-1 lP-hydroxypregn-4-en 3, 20-dione (Searle, Chicago; Code No. SC-9880) which appeared to have all the char...
متن کاملSynchronization of oestrus in goats: dose effect of progestagen.
A trial was conducted to test the efficiency of different doses of intravaginal progestagen in the synchronization of different goat breeds, in the breeding season. Sixty Multiparous Boer and 60 Indigenous feral does were allocated to three treatment groups. The groups consisted of a control group (natural oestrus) (n=20/breed); 60mg MAP sponge groups inserted for 14 days plus 300IU PMSG at spo...
متن کاملThe Effect of Post-lambing Interval on Fertilisation in Lactating Ewes Treated with Progestagen Impregnated Sponges and Gonadotrophin
For Border Leicester x Merino ewes joined in October in their normal anoestrous period at 5 and 8 weeks post partum, the percentages raddled by rams within seven days after sponge removal were 78 and 82. The percentages of ewes with fertilised eggs (of raddled ewes yielding eggs) were 27 and 70. In Merino ewes joined at 4 and 8 weeks post partum, in July, the percentages of raddled ewes were 97...
متن کاملEstrus synchronization in ewes treated with sponges impregnated with different doses of medroxyprogesterone acetate.
The objectives of this study were to determine residual and absorbed levels of medroxyprogesterone acetate (MAP) after treatment with intravaginal sponges impregnated with different doses of MAP in an ewe herd and to determine the effects of such treatments upon estrus incidence, interval to estrus onset and pregnancy rate. Polyurethane sponges impregnated with 40, 50 and 60mg of MAP were prepa...
متن کاملSynchronization of Oestrus in Goats with Progestogen Sponges and Short Term Combined FGA, PGF2α Protocols
The study aimed to evaluated the reproductive performance response to short term oestrus synchronization during the transition period. One hundred and sixty-five indigenous multiparous non-lactating goats were subdivided into the following six treatment groups for oestrus synchronization: NT control Group (N= 30), Fe-21d, FGA vaginal sponge for 21days+eCG at 19d; FPe11d, FGA 11d + PGF2α and eCG...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1967
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0140021