Browse > Article

Blood Urea Nitrogen and Body Condition Score on Reproductive Efficiency in Korean Cattle  

정영훈 (농촌진흥청 축산연구소 한우시험장)
이명식 (농촌진흥청 축산연구소 한우시험)
전기준 (농촌진흥청 축산연구소 한우시험)
장선식 (농촌진흥청 축산연구소 한우시험)
서국현 (농촌진흥청 축산연구소 한우시험)
박정준 (농촌진흥청 축산연구소 한우시험)
이창우 (농촌진흥청 축산연구소 한우시험)
나기준 (농촌진흥청 축산연구소 한우시험)
노규진 (경상대학교 수의과대학 동물의학연구소)
Publication Information
Journal of Embryo Transfer / v.19, no.1, 2004 , pp. 53-59 More about this Journal
Abstract
The environmental impact of nutrient waste from agriculture has become an area of concern as ways to produce more food and of offspring. In dairy cattle, as the genetic capacity for milk production has increased, decreased fertility has become a severe problem by feeding high dietary protein, resulting in high concentration of blood urea nitrogen (BUN). There are numerous reports on BUN which is associated with reduced conception rates and closely related to body condition score (BCS) in lactating cattle, but not in Korean native cattle. This study was therefore performed to investigate the relation of BUN to both BCS and conception rates in Korean cattle. A total of 400 female Korean cattle (2∼5 years) in Daewanryong were used for this experiment. Feeding condition divided into two groups depending on grazing and darn feeding period. In grazing period, the mixture of Timothy, Orchard grass and Tall fescue, and concentrates (2.5 kg/day) was fed whereas hay (6.5 kg/day) and corn silage (20 kg/day) were fed while barn feeding period. Average BUN concentration at grazing and barn feeding were 7.39$\pm$2.65 mg/㎗ and 12.36$\pm$2.92 mg/㎗, respectively. During grazing period, high rates of pregnancy showed at 4∼8 mg/㎗ BUN concentration. In barn feeding period, 66%, of cattle were in pregnant at 8∼l4 mg/㎗ BUN concentration. The BCS for obtaining high rate of pregnancy raged at 2.5∼3.5. However, BUN did not directly relate to BCS in Korean cattle.
Keywords
Korean cattle; BUN; BCS; reproductive efficiency;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Carroll DJ, Barten BA, Anderson GW and Smith RD. 1988. Influence of protein intake and feeding strategy on reproductive performance of dairy cows. J. Dairy Sci., 71:3470-3478   DOI   ScienceOn
2 Folman Y, Newmark H, Kaim M and Kaufmann W. 1981. Performance, rumen, and blood metabolites in high yielding cows fed varying protein percents and protected soybean. J. Dairy Sci., 64:759-767   DOI
3 Herd DB and Sprott LR. 1986. Body condition, nutrition and reproduction of beef cows. Texas Agricultural Extention Service Bulletin., B-1526
4 양부근, 김종복, 정희태, 박춘근, 김정익, 황환섭, 김현철. 1999. 저수태 한우와 번식장애 한우의 혈액 화학치 및 호르몬 분석, 한국가축번식학회지, 23:175-180
5 Hand RK, Gould SR, Basarab JA and Engstrom DF. 1986. Condition score, body weight and hip height as predictors of gain in various breed crosses of yearling steers on pasture. Can. J. Anim. Sci., 66:837-842   DOI
6 Kim IH and Suh GH. 2003. Effect of the amount of body condition loss from the dry to near calving periods on the subsequent body condition change, occurrence of postpartum disease, metabolic parameters and reproductive performance in Holstein dairy cows. Theriogenology, 60:1445-1456   DOI   ScienceOn
7 Dunn TG, Ingalls JE, Zimmerman DR and Wiltbank JN. 1969. Reproductive performance of 2 year-old Hereford and Angus heifers as influenced by pre- and post-calving energy intake. J. Anim. Sci., 29:719-726   DOI
8 Bastidas P, Forrest DW, Del Vecchio RP and Randel RD. 1990. Biological and immunological luteinzing hormone activity and blood metabolites in postpartum Brahman cows. J. Anim. Sci., 68: 2771-2778   DOI
9 Bellow RA and Short RE. 1978. Effect of precalving feed level on birth weight, calving difficulty and subsequent fertility. J. Anim. Sci., 46:1522-1529   DOI
10 Ducker MJ, Morant SV, Fisher WJ and Haggett RA. 1985. Nutrition and reproductive performance of dairy cattle. 2. Prediction of reproductive performance in first lactation dairy heifers subjects to controlled nutritional regimens. Anim. Prod., 41:13-19   DOI
11 Odde KG. 1997. Reproductive efficiency precalving nutrition and improving calf survival. Proc. Bovine Connection, 86-92
12 Edwards JS, Bartley EE and Dayton AD. 1980. Effects of dietary protein concentration on lactating cows. J. Dairy Sci., 63:243-251   DOI
13 Domecq JJ, Skidmore AL, Lloyd JW and Kaneene JB. 1997. Relationship between body condition scores and conception at first artificial insemination in a large dairy herd of high yielding Holstein cows. J. Dairy Sci., 80:113-120   DOI   ScienceOn
14 Kauffman AJ and St-Pierre NR. 2001. The relationship of milk urea nitrogen to urine nitrogen excretion in Holstein and Jersey cows. J. Dairy Sci., 84:2284-2294   DOI   ScienceOn
15 Wiltbank JN, Rowden WW, Ingalls JE, Gregory KE and Koch RM. 1962. Effect of energy level on reproductive phenomera of masture Hereford cows. J. Anim. Sci., 21:219-226   DOI
16 문진산, 주이석, 장금찬, 윤용덕, 이보균, 박용호, 손창호. 2000, 젖소에서 유성분 분석을 통한 영양상태 평가 및 건강관리에 관한 연구. 고능력 위주의 대규모 목장에서 우유 중 단백질과 요소태질소 수준이 수태율에 미치는 영향. 대한수의학회지, 40:383-391
17 백광수, 성환후, 고응규, 이명식, 류일선, 강희설, 조원모, 신기준. 1997. 한우 암소의 번식장애에 관한 조사 연구. 한국가축번식학회지, 21:411-421   과학기술학회마을
18 Butler WR, Calaman JJ and Beam SW. 1996. Plasma and milk urea nitrogen in relation to pregnancy rate in lactating dairy cattle. J. Anim. Sci., 74:858-865   DOI
19 박수봉, 김현섭, 이명식, 박진기, 장원경, 이정규. 1997. 우유내 요소태 질소 농도와 관련된 우군의 번식성. 한국가축번식학회지, 21:191-195   과학기술학회마을
20 Klosterman EW, Sanford LG and Parker CF. 1968. Effect of cow size and condition and ration protein content upon maintenance requirments of mature beef cows. J. Anim. Sci., 27:242-246   DOI
21 Ferguson JD, Galligan DT, Balanchard T and Reeves N. 1993. Serum urea nitrogen and conception rate : The usefulness of test information. J. Dairy Sci., 76:3742-3746   DOI   ScienceOn
22 박수봉, 김현섭, 김창근, 정영채, 이종완, 김천호. 1997. 젖소의 수태율과 요소태 질소의 관계. 한국가축번식학회지, 21:185-189
23 Paputungan U and Markarechian M. 2000. The influence of dam weight, body condition and udder scores on calf birth weight and preweaning growth rates in beef cattle. Asian American Journalists Association, 13 (4):435-439
24 Jordan ER and Swanson LV. 1979. Effect of crude protein on reproductive efficiency, serum total protein, and albumin in the high-producing dairy cow. J. Dairy Sci., 62:58-64   DOI
25 Elrod CC and Butler WR. 1993. Reduction of fertility and alteration of uterine pH in heifers fed excess ruminally degradable protein. J. Dairy Sci., 71:694-701
26 SAS, 1990, SAS/STAT User's guide vol 2. SAS institute Inc., Cary, NC, USA
27 Sonderman JP and Larson LL. 1989. Effects of dietary protein and exogenous Gonadotropinreleasing hormone on circulating progesterone concentrations and performance of Holstein cows. J Dairy Sci., 72:2179-2183   DOI   ScienceOn