1. خالدری م (1382) کتاب اصول پرورش گوسفند و بز. انتشارات جهاد دانشگاهی تهران، صص. 87-34.
2 . Abecia JA, Palac I, Forcada F and Valares JA (2006) The effect of melatonin treatment on the ovarian response of ewes to the ram effect. Domestic Animal Endocrinology. 31: 52-62.
3 . Atalay Uslua B, Tasalb I, Gulyuza F, Sendagb S, Ucarc O, Goerike S and Wehrendd A (2012) Effects of oestrus synchronisation using melatonin and norgestomet implants followed by eCG injection upon reproductive traits of fat-tailed Morkaraman ewes during suckling, anoestrus season. Small Ruminant Research. 108: 102-106.
4 . 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. Journal of Agriculture Science. 94: 69-88.
5 . 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.
6 . Mallampati RS, Pope AL and Casida LE (1971) Effect of suckling of postpartum anestrus in ewes lambing in different seasons of the year. Journal of Animal Science. 32: 673-676.
7 . Molik E, Misztal T, Romanowicz K and Wierzchos E (2007) Dependence of the lactation duration and efficiency on the season of lambing in relation to the prolactin and melatonin secretion in ewes. Livestock Science. 107: 220-226.
8 . 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.
9 . Gordon IR (1997) Controlled Reproduction in Farm Animals' Series. Controlled Reproduction in Sheep and Goats (2nd ed.) CAB International. New York, USA.
10 . 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 of Animal Science. 64: 216-225.
11 . 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 of Dairy Science. 75: 492-501.
12 . 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.
13 . McFadden TB, Daniel TE and Akers RM (1990a) Effects of plan of nutrition, growth hormone and unsaturated fat on mammary growth in prepubertal lambs. Journal of Animal Science. 68: 3117-3179.
14 . McFadden TB, Daniel TE and Akers RM (1990b) Effects of plan of nutrition, growth hormone and unsaturated fat on growth hormone, insulin and prolactin receptors in prepubertal lambs. Journal of Animal Science. 68: 3180-3189.
15 . McNatty KP, Reader K, Heath DA and Juengel DA (2007) Control of ovarian follicular development to the gonadotrophin-dependent phase. Reproduction in Domestic Ruminant. 12: 55-68.
16 . 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 Nutrition Development. 46: 339-354.
17 . Shimasaki S, Moore F, Otsukaan G and Erickson F (2004) The bone morphogenetic protein system in mammalian reproduction. Endocrinology. 25: 72-101.
18 . 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 of Dairy Science. 94: 189-204.
19 . 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 of Dairy Science. 94: 210-237.
20 . Ungerfeld R (2009) The induction of oestrus in ewes during the non-breeding season using pre-used CIDRs and oestradiol-17_ treatment. Small Ruminant Research. 84: 129-131.
21 . Wonnacott KE, Kwong W, Hughes V, Salter M, Lea RG, Garnsworthy C and Sinclair KD (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.
22 . 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.
23 . Wahle KW, Rotondo D and Heys SD (2003) Polyunsaturated fatty acids and gene expression in mammalian systems. Procedure Nutrition Society. 62: 349-36.