Relationship between Body Condition Score (BCS), Blood Urea Nitrogen(BUN) Concentration and Estrous Expression in Holstein Cows
![]() |
Son, J.K.
(Dairy Cattle Research Division, National Livestock Research Institute, RDA)
Park, S.B. (Dairy Cattle Research Division, National Livestock Research Institute, RDA) Park, S.J. (Dairy Cattle Research Division, National Livestock Research Institute, RDA) Baek, K.S. (Dairy Cattle Research Division, National Livestock Research Institute, RDA) Ahn, B.S. (Dairy Cattle Research Division, National Livestock Research Institute, RDA) Kim, H.S. (Dairy Cattle Research Division, National Livestock Research Institute, RDA) Hwang, S.J. (Dairy Cattle Research Division, National Livestock Research Institute, RDA) Park, C.K. (College of Animal Life Sciences, Kangwon National University) |
1 | Austin EJ, Mihm M, Ryan MP, Williams DH and Roche JF. 1999. Effect of duration of dominance of the ovulatory follicle on onset of estrus and fertility in heifers. J. Anim. Sci., 77:2219-2226 DOI PUBMED |
2 | Butler WR, Calaman JJ and Beam AW. 1996. Plasma and milk urea nitrogen in relation to pregnancy rate in lactating dairy cattle. J. Anim. Sci., 74:858-865 DOI PUBMED |
3 | De Vries MJ, Van Der Beek S, Kaal-Lansbergen LMTE, Ouweitjes W and Wilmink JBM. 1998. Modeling of energy balance in early lactation and the effect of energy deficits in early lactation on first detected estrus postpartum in dairy cows. J. Dairy Sci., 82:1927-1934 DOI ScienceOn |
4 | Markusfeld O, Galon N and Ezra E. 1997. Body condition score, health, yield and fertility in dairy cows. Vet. Rec., 141:67-72 DOI ScienceOn |
5 |
Pankowski JW, Galton DM, Erb HN, Guard CL and Grohn YT. 1995. Use of prostaglandin |
6 | Phillips CJC and Schofield SA. 1990. The effect of environment and stage of the oestrous cycle on the behaviour of dairy cows. Appl. Anim. Behav. Sci., 27:1-2 DOI ScienceOn |
7 | Roche JF, Mackey D and Diskin MD. 2000. Reproductive management of postpartum cows. Anim. Reprod. Sci., 60: 703-712 DOI ScienceOn |
8 |
Pursley JR, Mee MO and Wilbank MC. 1995. Synchronization of ovulation in dairy cows using |
9 | Dransfield MBG, Nebel RL, Pearson RE and Warnick L. 1998. Timing of insemination for dairy cows identified in estrus by a radiotelemetric estrus detection system. J. Dairy Sci., 81: 1874-1882 DOI PUBMED ScienceOn |
10 | Carroll DJ, Barten GW, Anderson GW and Smith RD. 1988. Influence of protein intake and feeding stratege on reproductive performance of dairy cows. J. Dairy Sci., 71 :3470-3478 DOI PUBMED ScienceOn |
11 | Butler WR and Smith RD. 1989. Interrelationships between energy balance and postpartum reproductive function in dairy cows. J. Dairy Sci., 72:767-783 DOI PUBMED ScienceOn |
12 | Lowman BG. 1985. Feeding in relation to suckler cow management and fertility. Vet. Rec., 117:80-85 DOI PUBMED ScienceOn |
13 | Trimberger GW. 1984. Breeding efficiency in dairy cattle from artificial insemination at various intervals before and after ovulation. Nebr. Agr. Exp. Sta. Res. Bul., 153:3-25 |
14 | Canfield RW, Sniffen CJ and Butler WR. 1990. Effects of excess degradable protein on postpartum reproduction and energy balance in dairy cattle. J. Dairy Sci., 73:2342-2349 DOI PUBMED ScienceOn |
15 | Lucy MC. 2001. Reproductive loss in high producing dairy cattle: Where will it end? J. Dairy Sci., 84:1277-1293 DOI PUBMED ScienceOn |
16 | Ferguson JD, Galligan DT, Blanchard T and Reeves N. 1993. Serum urea nitrogen and conception rate : The usefulness of test information. J. Dairy Sci., 76:3742-3746 DOI PUBMED ScienceOn |
17 | Rounsaville TR, Oltenacu PA, Milligan RA and Foote RH. 1979. Effects of heat detection, conception rate and culling policy on reproductive performance in dairy herds. J. Dairy Sci., 62:1435-1442 DOI |
18 | Xu ZZ, McKnight DJ, Vishwanath R, Pitt CJ and Burton LJ. 1998. Estrus detection using radiotelemetory or visual observation and tail painting for dairy cows on pasture. J. Dairy Sci., 81 :2890-289 DOI PUBMED ScienceOn |
19 | Beam SW and Butler WR. 1999. Effects of energy balance on follicular development and first ovulation in postpartum dairy cows. J. Reprod. Fertil., 54:411-424 |
20 | Park SB, Kim HS, Kim CK, Chung YC, Lee JW and Kim CH. 1997. Relation of conception rate and plasma urea nitrogen in dairy cattle. Korean J. Anim. Reprod., 21:185-189 |
21 | Pelssier CL. 1976. Dairy cattle breeding problems and their consequence. Theriogenology, 6:575-583 DOI ScienceOn |
22 | At-Taras EE and Spahr SL. 2001. Detection and characterization of estrus in dairy cattle with an electronic heat mount detector and an electronic activity tag. J. Dairy Sci., 84: 792-798 DOI PUBMED ScienceOn |
23 | Van Eerdenburg FJCM, Loeffler SH and Van Vliet JH. 1996. Detection of oestrus in dairy cows: a new approach to an old problem. Vet. Q., 18:52-54 PUBMED |
24 | Senatore EM, Butler WR and Oltenacu PA. 1996. Relationships between energy balance and post-partum ovarian activity and fertility in first lactation dairy cows. Anim. Sci., 62:17-23 DOI |
25 | Wiltbank M, Lopes H, Sartori R, Sangsritavong S and Gumen A. 2006. Changes in reproductive physiology of lactating dairy cows due to elevated steroid metabolism. Theriogenology, 65:17-29 DOI ScienceOn |
![]() |