REPRODUCTIVE PERFORMANCE OF GILTS SYNCHRONIZED WITH ALTRENOGEST
- 1. Faculty of Agriculture, Trakia University, Stara Zagora
- 2. Kubus S.A., P. Tecn. Europolis, Madrid
Description
The introduction of gilts into herds is a key element of management in commercial pig farms and this requires an efficient method for estrus synchronization of young animals. In this case the objective of this study was to evaluate the efficacy of Altrenogest treatment on reproductive performance of synchronized gilts in comparison with nonsynchronized animals depending of the age and the live weight of the animals. Two hundred sixty and two gilts were randomly assigned to two different groups: control group (55) and treated group (207) receiving 20 mg. of Altrenogest for 18 consecutive days. All animals were inseminated twice per estrus with semen dose of 80 ml. containing 3.0×109 spermatozoa. The conception rate and farrowing rate numerically increased in treated gilts in comparison to the control group – respectively with 7.46% and 7.72% (p>0.05). The same tendencies were found for litter parameters – 0.34 piglets more in total born and 0.39 piglets more born alive per litter. The age and the live weight of gilts had not statistically significant effect on their reproductive performance, but always the better reproductive performance was obtained in treated animals. The treatment with Altrenogestproved to be a highly effective method for managing the estrus in replacement gilts.
Files
17 DIMITROV ET AL..pdf
Files
(210.1 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:78b0ed85801db6e0f3da1f1fed2d5224
|
210.1 kB | Preview Download |
Additional details
References
- GOSS J: Prepare your gilts. Pig International, 33(11)21-24, 2003.
- KAEOKET K: Study on the oestrus synchronization in gilts by using progestin altrenogest and hCG: its effect on the follicular development, ovulation time and subsequent reproductive performance. Reproduction in Domestic Animals, 43(1)127-129, 2008.
- KIRKWOOD RN: Pharmacological intervention in swine reproduction. Swine Health Prod., 7(1)29-35, 1999.
- KRAELING RR, WEBEL SK: Current strategies for reproductive management of gilts and sows in North America. Journal of Animal Science and Biotechnology, 6:1-14, 2015.
- KREJCI R, JACOB S, ISAKA N, HORVATH A: Comparison of Altresyn with another altrenogest product in synchronizing the estrus in gilts. Proceedings of the 6th European symposium of porcine health management, Sorrento, Italy, 7-9 May, 2014.
- MARTINAT-BOTTE F, BARITEAU F, FORGERIT Y, MACAR C, MOREAU A, TERQUI M, SIGNORET JP: Control of oestrus in gilts II. Synchronization of oestrus with a progestagen, altrenogest (Regumate): Effect on fertility and litter size. Animal Reproduction Science, 22: 227–233, 1990.
- MARTINAT-BOTTE F, BARITEAU F, FORGERIT Y, MACAR C, MOREAU A, TERQUI M: Control of reproduction with progestagen, Altrenogest (Regumate) in gilts and at weaning in primiparous sows: Effect on fertility and litter size. Reproduction in Domestic Animals, 29:362-363, 1994.
- MARTINAT-BOTTE F, BARITEAU F, FORGERIT Y, MACAR C, POIRIER P, TERQUI M: Synchronization of oestrus in gilts with altrenogest: Effect on ovulation rate and foetal survival. Animal Reproduction Science, 39: 267-274, 1995.
- SOEDE NM, BOUWMAN EG, LANGENDIJK P, VAN DER LAAM I, KANORA A, KEMP B: Follicle development during luteal phase and altrenogest treatment in pigs. Reprod. Dom. Anim., 42: 329-332, 2007.
- WITTMANN M, HOENING C, MÖLLER S, SCHULTE-SIENBECK H, VIEBAHN S: Biological and economical effects of adding oestrus synchronized gilts to a medium sized piglet farm with batch farrowing in Nordrhein-Westfalen. Proceedings of the 19th International Pig Veterinary Society (IPVS) Congress, Copenhagen, Denmark, 16-19 July, 1, pp. 259, 2006.