Document Type : Research Paper
Abstract
The aim of this study was to compare the effect of glycogenic and/or lipogenic diets fed in Baluchi ewes treated with an estrus synchronization method to reduce delivery distance and improving reproductive parameters. Ninety heads of Baluchi ewes selected and randomly placed into three parallel groups. Each ewe of group was fed in with three different diets based on the fat and starch sources. In order to do the estrus synchronization, all ewes were put CIDR in 30 day of the trial. After 14 days, they were removed, then four hundred IU eCG hormone were injected. As soon as estrus signals was observed, ewes were inseminated. Ultrasonography was done to observe the number of dominant follicle, CL and pregnancy diagnosis. After parturition, reproductive parameters like lambing and twining rate were analyzed. The most of examined ewes showed clearly estrus signals. The consequence of ovary sonography did not indicate significant effect in average of dominant follicles numbers among the experimental diets. The number of dominant follicles was increased significantly from time of estrus to artificial insemination. Ovulation, pregnancy and twining rate were considerably (P< 0.05) higher in glycogenic and glycogenic+lipogenic rations compared with lipogenic ration. Generally, the feeding of starch source alone and or along with low proportion of fat sources might improve the effect of estrus synchronization on reproductive performance of Baluchi ewes.
Keywords
- خالدری م (1382) کتاب اصول پرورش گوسفند و بز. انتشارات جهاد دانشگاهی تهران.32-86.
- 2. Ali (2007 (Effect of time of eCG administration on follicular response and reproductive performance of FGA-treated Ossimi ewes. Small Ruminant Research 72: 33-37.
- 3. Allen MS (2000) Effect of diet on short term regulation feed intake by lactating dairy cows. Journal dairy Science 83:1598-1624
- 4. Barrett DMW, Bartlewski PM, Symington A and Rawlngs NC (2004) Ultrasound and endocrine evaluation of the ovarian response to a single dose of 500 IU eCG following a 12-day treatment with progestagen-releasing intravaginal sponges in the breeding and non-breeding season in ewes. Theriogenology 61: 311-327.
- 5. Bell JA, Griinari JM and Kennnelly JJ (2006) Effect of safflower oil, flaxseed oil, monensin and vitamin E on concentration of conjugated linoleic acid in bovine milk fat. Journal Dairy Science. 89:733-748
6. Boland MP, Crosby TF and Gordon I (1981) Effect of mating management and PMSG dose on lambing outcome in ewes bred in late anoestrus. Journal Agriculture Science Camb 97: 445-449.
7. Boscos CM, Samartzi FC, Dellis S, Rogge A, Stefanakis A and Krambovitis E (2002) Use of progestagen-gonadotrophin treatment in estrus synchronization of sheep. Theriogenology 58: 1261-1272.
8. Evans G and Robinson TJ (1980) the control of fertility in sheep: endocrine and ovarian response to progestagen-PMSG treatment in the breeding season and in anoestrus. J Agriculture Science 94: 69-88.
9. Fthenakisa GC, Arsenosb G, Brozosb C, Fragkoua IA, Giadinisb ND, Giannenasa I, Mavrogiannia VS, Papadopoulosb E and Valasia I (2012) Health management of ewes during pregnancy. Animal Reproduction Science. 130:198– 212
10. Fouladi-Nashta AA, Wonnacott KE, Gutierrez CG, Gong JG, Sinclair KD, Garnsworthy PC and Webb R (2009) Oocyte quality in lactating dairy cows fed on high levels of n-3 and n-6 fatty acids. Reproduction. 138:771–781.
11. Godfrey R, Collins W, Hensley JR and Wheaton JE (1999). Estrus synchronization and artificial insemination of hair sheep ewes in the tropics. Theriogenology, 51(5), 985-997.
12. Gordon, IR (1997) Controlled Reproduction in Farm Animals' Series. Controlled Reproduction in Sheep and Goats (2nd ed.) CAB International. New York, USA.
13. He ML, Mir PS, Beauchemin KA, Ivan M and Mir Z (2005) Effect dietary sunflower on lactation performance and conjugated linoleic acid content of milk. Can. Journal Animal Science. 85:75-83.
14. Hashemi, M, Safdarian M and Kafi, M (2006) Estrous response to synchronization of estrus using different progesterone treatments outside the natural breeding season in ewes. Small Ruminant Research, 65(3), 279-283.
15. Kamali AA, Crosby TF, Boland MP, Kelleher DL and Gordon I (1990). Effects of progesterone type and PMSG source on lambing outcome in ewes following artificial insemination. Irish Vet J 43: 99-103
16. Lewis GS and Bolt DJ (1987) effects of Suckling, Progestogen-Impregnated Pessaries or Effects of Suckling, Progestogen-Impregnated Pessaries or Hysterectomy on Ovarian Function in Autumn-Lambing Postpartum Ewes. Journal Animal Science 64:216-225.
- 17. Khorasani GR, Boer G, Robinson PH and kennelly JJ (1992) Effect of canola fat on ruminal and total tract digestion, plasma hormones, and metabolites in lactating dairy cows. Journal Dairy Science75:492-501.
18. Martemucci G and Alessandro AG (2011) synchronization of oestrus and ovulation by short time combined FGA, PGF2_, GnRH, eCG treatments for natural service or AI fixed-time. Animal Reproduction Science 123:32–39.
19. Scaramuzzi RJ, Campbell BK, Downing JA, Kendall NR, Khalid M, Mun˜oz-Gutie´rrez M and Somchit A (2006) A review of the effects of supplementary nutrition in the ewe on the concentrations of reproductive and metabolic hormones and the mechanisms that regulate folliculogenesis and ovulation rate. Reproduction Nutrion Development. 46:339–354.
20. Scaramuzzi RJ and Radford HM (1983) Factors regulating ovulation rate in ewes. Journal Reproduction Fertility 69: 353-367.
21. Silvestre FT, Carvalho TS, Francisco N, Santos JE, Staples CR, Jenkins TC and Thatcher W (2011) Effects of differential supplementation of fatty acids during the peripartum and breeding periods of Holstein cows: I. Uterine and metabolic responses, reproduction, and lactation. Journal Dairy Science 94:189–204.
22.Silvestre FT, Carvalho TS, Crawford C, Santos JE, Staples CR, Jenkins T and Thatcher W (2012) Effects of differential supplementation of fatty acids during the peripartum and breeding periods of Holstein cows: II. Neutrophil fatty acids and function, and acute phase proteins. Journal Dairy Science 94:210–237.
23. Timurkan H and Yildiz H (2005) Synchronization of oestrus in Hamdani ewes: the use of different PMSG doses. Bull Vet Inst Pulawy 49: 311-31.
24. Wonnacott KE, Kwong W, Hughes V, Salter AM, Lea RG, Garnsworthy CP and Sinclair K (2010) Dietary omega-3 and -6 polyunsaturated fatty acids affect the composition and development of sheep granulosa cells, oocytes and embryos. Reproduction 139:57–69.
25. Yia, D, Zengb S and Guoa Y (2012) diet rich in n-3 polyunsaturated fatty acids reduced prostaglandin biosynthesis, ovulation rate, and litter size in mice. Theriogenology.78:28–38
26. Zeleke M, Greyling J and Schwalbach L (2005) Effect of progestagen and PMSG on oestrous synchronization and fertility in Dorper ewes during the transition period. Small Ruminant Research 56:47-53.
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