고온기에 있어서 중조와 Vitamin 급여가 착유우의 산유량 및 유조성분 변화에 미치는 효과
Effects of Sodium Bicarbonate and Vitamin Supplementation on Milk Production and Composition in Lactating Holstein Cows Under Heat Stress Condition
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Sixteen multiparous lactating Holstein cows were used to compare effects of supplementing 1)no additive(Control), 2)1.2% sodium bicarbonate(NaHCO₃); 3)niacin(80g/d), 4)vitamin A+E (140,000IU+1000IU) on feed intake, milk production, milk composition and somatic cell counts during the summer months. Insofar as possible, treatment groups were balanced for lactation number and days in milk. Cows were fed a diet of 9.1kg DM of concentrate and 10.2kg DM of corn silage. Daily maximum air temperature in free stall barn was 35℃ for 3 days of the pretreatment periods and decreased gradually up to 27℃ during the treatment periods of 15days. Dry matter intake of corn silage was higher(p<0.05) for cows consuming NaHCO₃ than those not consuming NaHCO₃. Daily milk production for niacin and vitamin A+E supplementations resulted in significant(p<0.001) increase in milk production from 3 day of trials than control and NaHCO3. Milk fat percentage tended(p=0.09) to increase and milk lactose percentage was increased significantly(p<0.001) for cows supplemented with NaHCO3, niacin and vitamin A+E. Milk protein percentages was higher significantly(p<0.05) with supplemental niacin and somatic cell counts was higher significantly(p<0.001) with supplemental vitamin A+E. These data strongly suggest that supplementation of NaHCO₃, niacin or vitamin A+E should be increased for improving milk production and mammary gland health of dairy cows under heat stress.
Abstract
Sixteen multiparous lactating Holstein cows were used to compare effects of supplementing 1)no additive(Control), 2)1.2% sodium bicarbonate(NaHCO₃); 3)niacin(80g/d), 4)vitamin A+E (140,000IU+1000IU) on feed intake, milk production, milk composition and somatic cell counts during the summer months. Insofar as possible, treatment groups were balanced for lactation number and days in milk. Cows were fed a diet of 9.1kg DM of concentrate and 10.2kg DM of corn silage. Daily maximum air temperature in free stall barn was 35℃ for 3 days of the pretreatment periods and decreased gradually up to 27℃ during the treatment periods of 15days. Dry matter intake of corn silage was higher(p<0.05) for cows consuming NaHCO₃ than those not consuming NaHCO₃. Daily milk production for niacin and vitamin A+E supplementations resulted in significant(p<0.001) increase in milk production from 3 day of trials than control and NaHCO3. Milk fat percentage tended(p=0.09) to increase and milk lactose percentage was increased significantly(p<0.001) for cows supplemented with NaHCO3, niacin and vitamin A+E. Milk protein percentages was higher significantly(p<0.05) with supplemental niacin and somatic cell counts was higher significantly(p<0.001) with supplemental vitamin A+E. These data strongly suggest that supplementation of NaHCO₃, niacin or vitamin A+E should be increased for improving milk production and mammary gland health of dairy cows under heat stress.
참고문헌 (28)
- A. O. A. C, "Official Methods of Analysis" (1990), Association of Official Analytical Chemists. Washington, D. C.
- Coppock, C. E, "Feeding energy to dairy cattle", pp.265~268 (1978), Large Dairy Management. University Presses of Florida, Gainesville
- Costanzo, A. D., "Supplementation of nicotinic acid for lactating cows under heat stress conditions", J. Dairy Sci, 80, pp.1200~1206 (1997)
- Dufva, G. S., "Effect of niacin supplement- ation on milk production and ketosis of dairy cattle", J. Dairy Sci, 66, pp.2329~2336 (1983)
- Erdman, R. A., "Effects of dietary calcium and sodium on potassium requirements for lactating dairy cows", J. Dairy. Sci, 63, pp.538~ (1980)
- Erdman. R. A., "Dietary sodium bicarbonate and magnesium oxide for early postpartum lactating dairy cows: effects on production, acid-base metabolism, and digestion", J. Dairy Sci, 65, pp.712~731 (1982)
- Erickson, P. S., "Supplementation of dairy cow diets with calcium silts of long-chain fatty acids and nicotinic acid in early lactation", J. Dairy Sci, 75, pp.1078~1089 (1992)
- Escobosa, A., "Effects of dietary sodium bicarbonate and calcium chloride in physiology responses of lactating dairy cows in hot ewather", J. Dairy Sci, 67, pp.574~ (1984)
- Gerald, T. S., "Bioavailability and interac- tion of vitamin A and vitamin E in ruminants", J. Nutr, 125, pp.1799S~1803S (1995)
- Jaster, E. H., "Feeding supplemental niacin for milk production in six dairy herds", J. Dairy Sci, 66, pp.1046~1051 (1983)
- Jaster, E. H, "supplemental nicotinic acid or nicotinamide for lactating dairy cows", J. Dairy Sci, 73, pp.2880~2887 (1990)
- Kadzere, C. T., "Heat stress in lactation dairy cows: a review", Livestock Production Science, 77, pp.59~91 (2002)
- Kilmer, L. H., "Addition of sodium bicarbonate to rations of postpartum dairy cows: physiology and metabolic effects", J. Dairy Sci, 64, pp.2357~ (1981)
- Mallonee, P. G., "Production and physiological responses of dairy cows to varying dietary potassium during heat stress", J. Dairy Sci, 68, pp.1479~1487 (1985)
- Michal, J. J., "Modulatory effects of dietary β-carotene on blood and mammary leukocyte function in periparturient dairy cows", J. Dairy cows, 77, pp.1408~1421 (1994)
- Muller, L. D., "Supplemental niacin for lactating cows during summer feeding", J. Dairy Sci, 69, pp.1416~1420 (1986)
- NRC, "Nutrient Requirements of Dairy Cattle" (1987), Natl. Acad. Sci., Washington, D.C
- NRC, "Nutrient Requirements of Dairy Cattle" (1989), Natl. Acad. Sci., Washington, D.C.
- NRC, "Nutrient Requirements of Dairy Cattle" (2001), Natl. Acad. Sci., Washington, D.C.
- Oldham, E. R., "Effects of supplemental vitamin A or β- carotene during the dry period and early lactation on udder health", J. Dairy Sci, 74, pp.3775~3781 (1991)
- Riddell, D. O., "Efect of nicotinic acid on microbial protein synthesis in vitro and on dairy cattle growth and milk production", J. Dairy Sci, 64, pp.782~ (1981)
- SAS User’s Guide: Statistics, (2002), SAS Inst., Inc., Cary, NC.
- Schneider, P. L., "Influence of dietary sodium and potassium bicarbonate and total potassium on heat stressed lactating dairy cows", J. Dairy Sci, 67, pp.2546~2553 (1984)
- Smith, K. L., "Dietary vitamin E and selenium affect mastitis and milk quality", J. Anim. Sci, 75, pp.1659~1665 (1997)
- "Second National Communication of the Republic of Korea Under the United Nations Framework Convention on Climate Change//The Government of the Republic of Korea/2003"[URL]
- West. J. W, "Effects of heat-stress on production in dairy cattle", J. Dairy Sci, 86, pp.2131~2144 (2003)
- Weiss, W. P., "Effect of vitamin E supplementation of selenium on mammary gland health of dairy cows", J. Dairy Sci, 80, pp.1728~1737 (1997)
- Weiss, W. P, "Requirements of fat-soluble vitamins for dairy cows: A review", J. Dairy Sci, 81, pp.2493~2501 (1998)