- Volume 36 Issue 2
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Effects of TDN/CP Ratio on Nutrient Intake, Body Weight Gain, Blood Characteristics of Dairy Heifers from 12 to 14 Months of Age
TDN/CP 비율이 젖소 12~14개월령 육성우 영양소 섭취량, 증체량 및 혈액성상에 미치는 영향
- Kim, Gyeom-Heon (Department of Animal Science and Technology, Konkuk University) ;
- Hwang, Won-Uk (Department of Animal Science and Technology, Konkuk University) ;
- Kim, Hyun-Jin (Research Institute for Agriculture and Life Sciences, Seoul National University) ;
- Kim, Soo-Ki (Department of Animal Science and Technology, Konkuk University)
- Received : 2016.04.29
- Accepted : 2016.05.18
- Published : 2016.06.30
In this study, the effect of energy and protein ratio on the nutrient availability and body weight gain was determined to find the proper nutrient level for the stage of replacement dairy heifers before fertilization at approximately 12~24 months old after birth. Dry matter intake showed that the TDN/CP rate of T1 (5.0:1), T2 (4.5:1) and T3 (4.0:1) resulted in similar values. Among feces, the ash content of T1 was 11.07%, which was significantly (p < 0.05) higher than that of T3 (9.69%). It was also significantly (p < 0.05) higher than that of T2 (10.32%). When the TDN/CP rate was increased, the ash content in the feces was also increased. Regardless of the initial weight, weight gain was increased significantly as the CP rate in the feed was increased on the
Supported by : 농림수산식품기술기획평가원
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