참고문헌
- Ansari-Lari and Abbasi S. 2008. Study of reproductive performance and related factors in four dairy herds in Far province (southern Iran) by Cox proportional-hazard model. Prev. Vet. Med. 85:158-165 https://doi.org/10.1016/j.prevetmed.2008.02.004
- Asimwe L and Kifaro GC. 2007. Effect of breed, season, year and parity on reproductive performance of dairy cattle under smallholder production system in Bukoba district, Tanzania. Livestock Research for Rural Development 19(10):1-9
- Baek KS, Ko YG, Seong HH, Lee MS, Ryu IS and Na SH. 1998. Survey on the effect of the parity on reproductive traits of Korean native cows. Korean J. Anim. Reprod. 22(4):359-366
- Bellows RA and Short RE. 1978. Effects of precalving feed level on birth weight, calving difficulty and subsequent fertility. J. Anim. Sci. 46:1522-1528 https://doi.org/10.2527/jas1978.4661522x
- Deutscher GH, Stotts JA and Nielsen MK. 1991. Effect of breeding season length and calving season on range cow productivity. J. Anim. Sci. 69:3453-3460
- Fallon GR. 1962. Body temperature and fertilization in the cow. J. Reprod. Fertil. 3:116 https://doi.org/10.1530/jrf.0.0030116
- Gebeyehu G, Kelay Band Abebe B. 2007. Effect of parity, season and year on reproductive performance and herd life of Friesian cows at Stella private dairy farm, Ethiopia. Livestock Research for Rural Development 19(7):1-8
- Han CK, Lee NH, Park YJ and Chung YC. 1989. Survey on the reproductive traits of Korean native cattle. Korean J. Anim. Reprod. 13(1):1-6
- Houghton PL, Lemenager RP, Horstman LA, Hendrix KS and Moss GE. 2000. Effects of body composition, pre- and postpartum energy level and early weaning on reproductive performance of beef cows and preweaning calf gain. J. Anim. Sci. 68:1438-1446
- Loyacano AF, Nipper WA and Vincent CK. 1974. Effects of supplemental energy and season of breeding on the reproductive performance of beef cattle. J. Anim. Sci. 39:281-285 https://doi.org/10.2527/jas1974.392281x
- Mahadevan P. 1951. The effect of environmental and heredity on lactation. J. Agric. Sci. 41:80-93 https://doi.org/10.1017/S0021859600058561
- Melendez P, Duchens M, Perez A, Moraga L and Archbald L. 2008. Characterization of estrus detection, conception and pregnancy risk of Holstein cattle from the central area of Chile. Theriogenology 70:631-637 https://doi.org/10.1016/j.theriogenology.2008.04.033
- Morris ST, Morel PCH and Kenyon PR. 2006. The effect of individual liveweight and condition of beef cows on their reproductive performance and birth and weaning weights of calves. N. Z. Vet. J. 54:96-100 https://doi.org/10.1080/00480169.2006.36619
- Morrison DG, Spitzer JC and Perkins JL. 1999. Influence of prepartum body condition score change on reproduction in multiparous beef cows calving in moderate body condition. J. Anim. Sci. 77:1048-1054
- Osoro K and Wright IA. 1992. The effect of body condition, live weight, breed, age, calf performance, and calving date on reproductive performance of spring-calving beef cows. J. Anim. Sci. 70:1661-1666 https://doi.org/10.2527/1992.7061661x
- Rae DO, Kunkle WE, Chenoweth PJ, Sand RS and Tan T. 1993. Relationship of parity and body condition score to pregnancy rates in Florida beef cattle. Theriogeonlogy 39:1143-1152 https://doi.org/10.1016/0093-691X(93)90013-U
- Short RE, Bellows RA, Staigmiller RB, Berardinelli JG and Custer EE. 1990. Physiological mechanisms controlling anestrus and infertility in postpartum beef cattle. J. Anim. Sci. 68:799-816
- Son CH, Kang HG and Kim SH. 2001. Application of progesterone measurement for age and body weight at puberty, and postpartum anestrus in Korean native cattle. J. Vet. Med. Sci. 63:1287-1291 https://doi.org/10.1292/jvms.63.1287
- Spitzer JC, Morrison DG, Wettemann RP and Faulkner LC. 1995. Reproductive responses and calf birth and weaning weights as affected by body condition at parturition and postpartum weight gain in primiparous beef cows. J. Anim. Sci. 73:1251-1257
- Walsh S, Buckley F, Berry DP, Rath M, Pierce K, Byrne N and Dillon P. 2007. Effects of breed, feeding system, and parity on udder health and milking characteristics. J. Dairy Sci. 90:5767-5779 https://doi.org/10.3168/jds.2007-0389
- Wettemann RP, Lents CA, Ciccioli NH, White FJ and Rubio I. 2003. Nutritional- and suckling-mediated anovulation in beef cows. J. Anim. Sci. 81:E48-E59
- Wiltbank IN, Rowden WW, Ingalls JE and Zimmerman DR. 1964. Influence of post-partum energy level on reproductive performance of Hereford cows restricted in energy intake prior to calving. J. Anim. Sci. 23:1049-1053 https://doi.org/10.2527/jas1964.2341049x