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학술저널
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한국축산학회(구 한국동물자원과학회) 한국축산학회지 한국축산학회지 제58권 제8호
발행연도
2016.1
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1 - 12 (12page)

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Background: The effect of choline chloride supplementation through forced drinking combined with concentrate diets containing Ca-fish oil on milk production and milk composition of Etawah Grade goats was evaluated. Choline chloride is an essential component in ruminant diets as it is required for fat metabolism. Method: The experiment was conducted in a completely randomized block design with three types of treatments and eight replications. The trial had two successive experimental periods; the first, during the eight weeks of late pregnancy, and the second, during the first 12 weeks of lactation. Twenty-four Etawah Grade does in the second gestation period were divided into three treatment groups. Commercial choline chloride 60 % in corncobs-based powder was used as a source of choline chloride. The treatments were no supplementation (control) and supplemented with either 4 g or 8 g/2days of choline chloride. Choline chloride was given to the animals through a forced drinking technique, after dissolving it in 60 ml drinking water. The initial body weight of does was 38.81 ± 3.66 kg. The does were penned individually, and were given fresh chopped King Grass ad libitum and 700 g/day of concentrate diets containing Ca-fish oil, starting eight weeks prior to expecting kidding and continuing for 12 weeks of parturition. Results: All nutrient intakes were not significantly different (p > 0.05) among the treatments during the late pregnancy and the lactation periods. Supplementation did not affect (p > 0.05) the average daily gains and feed conversion ratio during pregnancy but gave effects (p < 0.05) on the average daily gains, feed conversion ratio and income over feed cost during lactation. The highest average daily milk yields and 4 % fat corrected milk yields were found in goats supplemented with 4 g/2days of choline chloride and increased by 17.00 % and 24.67 %, respectively, compared to the control. Moreover, milk composition percentage and milk constituent yields improved significantly (p < 0.05) in those supplemented with 4 g/2days of choline chloride. Conclusion: The supplementation of 4 g/2days of choline chloride through forced drinking increased milk yields, the 4 % fat corrected milk yields, milk composition, milk constituent yields, and improved feed conversion ratio and income over feed cost of Etawah Grade goats.
#Choline chloride supplementation #Etawah Grade does #Forced drinking #Milk production #Milk composition

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참고문헌 (39)

참고문헌 신청
Windholz M / 1976 / The Merck Index an Encyclopedia of Chemicals and Drugs / Merck & Co., Inc :284 google schola Sleurink T / 2009 / A method of feeding choline. 2009. US Patent 20060073236 google schola Sales J / 2010 / Effect of dietary rumen-protected choline on milk production of dairy cows: A meta-analysis / J Dairy Sci 93:3746~3754 google schola Sharma BK / 1989 / In vitro degradation of choline from selected feedstuffs and choline supplements / J Dairy Sci 72:2772~2776 google schola Atkins KB / 1988 / Dietary choline effects on milk yield and duodenal choline flow / J Dairy Sci 71:109~116 google schola

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