Korean Journal of Veterinary Service (한국동물위생학회지)

The Korean Society of Veterinary Service (한국동물위생학회)
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Analysis of total mixed ration (TMR) nutrition and metabolic diseases in Korean dairy farm

국내 고능력우 Holsteins 농가의 TMR 영양성분 및 대사성 질병 분석

  • Kim, SeonHo (Department of Animal Science and Technology, Sunchon National University) ;
  • Cho, Yong-il (Department of Animal Science and Technology, Sunchon National University)
  • 김선호 (순천대학교 동물자원과학과) ;
  • 조용일 (순천대학교 동물자원과학과)
  • Received : 2019.03.14
  • Accepted : 2019.05.25
  • Published : 2019.06.30
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Abstract

A variety of livestock feed resources were used in Korean dairy farm due to a lack of the endemic feed. However, there is inadequate real farm data to support farmers' decisions on the choice of options. The main objective of this study was to evaluate the nutritional value of total mixed ration (TMR) as well as the metabolic diseases status in Korean dairy farms. TMR samples were collected from nine feed companies and eight selected self-formulated by the dairy farms. The nutrient contents were examined by AOAC methods. The frequency of metabolic diseases such as ketosis and hypocalcemia were surveyed. The average moisture content was 36.2% although the min. and max. value were varied from 21.7% and 50.6% among farms. The mean${\pm}$standard deviation of crude fiber (CF), crude ash (CA), ether extract (EE), and crude protein (CP) were $21.4{\pm}2.5$, $4.6{\pm}0.4$, $3.2{\pm}0.5$ and $9.8{\pm}1.7$, respectively. However, the average ADF and NDF was $17.3{\pm}3.7$ and $31.0{\pm}5.7$, respectively. The compositions of TMR were varied significantly among the dairy farms. The frequency of clinical Ketosis (CK), subclinical ketosis (SCK) and hypocalcemia were higher in early lactation period with 4.5%, 11.0% and 3.0%, respectively. Also, the frequency of SCK was higher than CK and hypocalcemia throughout the lactation. Periodic TMR nutrient analysis based on herd production or physiology change would maximize the effects of TMR feeding. Furthermore, the study results would be useful to the farm practitioner and producer for their farm management.

Keywords

Table 1. The number of cattle for each lactation period

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Table 2. Frequency of clinical ketosis, subclinical ketosis and hypocalcemia in the dairy cattle

GCOSBX_2019_v42n2_67_t0002.png 이미지

Table 3. The chemical composition of the total mixed ration in Korea dairy farm (Dry matter basis)

GCOSBX_2019_v42n2_67_t0003.png 이미지

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