Effects of ambient temperature and rumen–protected fat supplementation on growth performance, rumen fermentation and blood parameters during cold season in Korean cattle steers
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초록
Objective: This study was performed to evaluate whether cold ambient temperature and dietary rumen-protected fat (RPF) supplementation affect growth performance, rumen fermentation, and blood parameters in Korean cattle steers. Methods: Twenty Korean cattle steers (body weight [BW], 550.6±9.14 kg; age, 19.7±0.13 months) were divided into a conventional control diet group (n = 10) and a 0.5% RPF supplementation group (n = 10). Steers were fed a concentrate diet (1.6% BW) and a rice straw diet (1 kg/d) for 16 weeks (January 9 to February 5 [P1], February 6 to March 5 [P2], March 6 to April 3 [P3], and April 4 to May 2 [P4]). Results: The mean and minimum indoor ambient temperatures in P1 (–3.44°C, –9.40°C) were lower (p<0.001) than those in P3 (5.87°C, –1.86°C) and P4 (11.18°C, 4.28°C). The minimum temperature in P1 fell within the moderate cold-stress (CS) category, as previously reported for dairy cattle, and the minimum temperatures of P2 and P3 were within the mild CS category. Neither month nor RPF supplementation affected the average daily gain or gain-to-feed ratio (p>0.05). Ruminal ammonia nitrogen concentrations were higher (p<0.05) in cold winter than spring. Plasma cortisol concentrations were lower (p<0.05) in the coldest month than in the other months. Serum glucose concentrations were generally higher in colder months than in the other months but were unaffected by RPF supplementation. RPF supplementation increased both total cholesterol (p = 0.004) and high-density lipoprotein (HDL) concentrations (p = 0.03). Conclusion: Korean cattle may not be significantly affected by moderate CS, considering that the growth performance of cattle remained unchanged, although variations in blood parameters were observed among the studied months. RPF supplementation altered cholesterol and HDL concentrations but did not affect growth performance.
Abstract
Objective: This study was performed to evaluate whether cold ambient temperature and dietary rumen-protected fat (RPF) supplementation affect growth performance, rumen fermentation, and blood parameters in Korean cattle steers. Methods: Twenty Korean cattle steers (body weight [BW], 550.6±9.14 kg; age, 19.7±0.13 months) were divided into a conventional control diet group (n = 10) and a 0.5% RPF supplementation group (n = 10). Steers were fed a concentrate diet (1.6% BW) and a rice straw diet (1 kg/d) for 16 weeks (January 9 to February 5 [P1], February 6 to March 5 [P2], March 6 to April 3 [P3], and April 4 to May 2 [P4]). Results: The mean and minimum indoor ambient temperatures in P1 (–3.44°C, –9.40°C) were lower (p<0.001) than those in P3 (5.87°C, –1.86°C) and P4 (11.18°C, 4.28°C). The minimum temperature in P1 fell within the moderate cold-stress (CS) category, as previously reported for dairy cattle, and the minimum temperatures of P2 and P3 were within the mild CS category. Neither month nor RPF supplementation affected the average daily gain or gain-to-feed ratio (p>0.05). Ruminal ammonia nitrogen concentrations were higher (p<0.05) in cold winter than spring. Plasma cortisol concentrations were lower (p<0.05) in the coldest month than in the other months. Serum glucose concentrations were generally higher in colder months than in the other months but were unaffected by RPF supplementation. RPF supplementation increased both total cholesterol (p = 0.004) and high-density lipoprotein (HDL) concentrations (p = 0.03). Conclusion: Korean cattle may not be significantly affected by moderate CS, considering that the growth performance of cattle remained unchanged, although variations in blood parameters were observed among the studied months. RPF supplementation altered cholesterol and HDL concentrations but did not affect growth performance.
참고문헌 (35)
- Ames DR, "Adjusting protein in feedlot diets during thermal stress", J Anim Sci, 50, pp.1~6 (1980)
- Gulliksen SM, "Calf mortality in Norwegian dairy herds", J Dairy Sci, 92, pp.2782~2795 (2009)
- Mader TL, "Environmental stress in confined beef cattle", J Anim Sci, 81, pp.E110~E119 (2003)
- Brouček J, "Estimation of cold stress effect on dairy cows", Int J Biometeorol, 35, pp.29~32 (1991)
- Young BA, "Cold stress as it affects animal production", J Anim Sci, 52, pp.154~163 (1981)
- Kennedy PM, "The effect of cold exposure of sheep on digestion, rumen turnover time and efficiency of microbial synthesis", Br J Nutr, 36, pp.231~242 (1976)
- NRC, "Effect of environment on nutrient requirements of domestic animals" (1981), National Academy Press
- Christopherson RJ, "Effect of the thermal environment on digestion in ruminants", Can J Anim Sci, 63, pp.477~496 (1983)
- Hess BW, "A decade of developments in the area of fat supplementation research with beef cattle and sheep", J Anim Sci, 86, pp.E188~E204 (2008)
- NRC, "Nutrient requirements of dairy cattle" (2007), National Academy Press
- Kronfeld DS, "Metabolic effects of feeding protected tallow to dairy cows", J Dairy Sci, 63, pp.545~552 (1980)
- McNamara S, "Effect of offering rumen–protected fat supplements on fertility and performance in spring–calving Holstein–Friesian cows", Anim Reprod Sci, 79, pp.45~56 (2003)
- Hill GM, "Rumen protected fat in Kline barley or corn diets for beef cattle: digestibility, physiological, and feedlot responses", J Anim Sci, 69, pp.3376~3388 (1991)
- Naik PK, "Bypass fat in dairy ration – a review", Anim Nutr Feed Techol, 13, pp.147~163 (2013)
- AOAC, "Official methods of analysis", pp.210~219 (1996), AOAC International
- Van Soest PJ, "Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition", J Dairy Sci, 74, pp.3583~3597 (1991)
- Shen JS, "Insertion depth of oral stomach tubes may affect the fermentation parameters of ruminal fluid collected in dairy cows", J Dairy Sci, 95, pp.5978~5984 (2012)
- Chaney AL, "Modified reagents for determination of urea and ammonia", Clin Chem, 8, pp.130~132 (1962)
- H.J. Kang, "Effects of Ambient Temperature on Growth Performance, Blood Metabolites, and Immune Cell Populations in Korean Cattle Steers", Animal Bioscience, 29(3), pp.436~443 (2016), 아세아·태평양축산학회[DOI]
- (2010)[URL]
- 박승주, "Genetic, management, and nutritional factors affecting intramuscular fat deposition in beef cattle — A review", Animal Bioscience, 31(7), pp.1043~1061 (2018), 아세아·태평양축산학회[DOI]
- Kennedy PN, "Effects of cold exposure on feed protein degradation, microbial protein synthesis and transfer of plasma urea to the rumen of sheep", Br J Nutr, 47, pp.521~535 (1982)
- Kennedy PM, "Effects of cold exposure on digestion, microbial synthesis and nitrogen transformations in sheep", Br J Nutr, 39, pp.105~117 (1978)
- Bines JA, "The effect of protected lipids on nutrient intakes, blood and rumen metabolites and milk secretion in dairy cows during early lactation", J Agric Sci Camb, 91, pp.135~150 (1978)
- Khan MA, "The effect of low environmental temperature on plasma corticosteroid and glucose concentrations in the newborn calf", J Endocrinol, 48, pp.355~363 (1970)
- Pollard TM, "Use of cortisol as a stress marker : practical and theoretical problems", Am J Hum Biol, 7, pp.265~274 (1995)
- Young BA, "Temperature-induced changes in metabolism and body weight of cattle(Bos taurus)", Can J Physiol Pharmacol, 53, pp.947~953 (1975)
- Haman F, "Effect of cold exposure on fuel utilization in humans : plasma glucose, muscle glycogen, and lipids", J Appl Physiol, 93, pp.77~84 (2002)
- Lake SL, "Body condition score at parturition and postpartum supplemental fat effects on cow and calf performance", J Anim Sci, 83, pp.2908~2917 (2005)
- Ghasemi E, "Effect of different fat supplements on performance of dairy calves during cold season", J Dairy Sci, 100, pp.5319~5328 (2017)
- H-j.Lee, "Effects of Rumen Protected Oleic Acid in the Diet on Animal Performances, Carcass Quality and Fatty Acid Composition of Hanwoo Steers", Animal Bioscience, 16(7), pp.1003~1010 (2003), 아세아·태평양축산학회
- Duske K, "Metabolism and lactation performance in dairy cows fed a diet containing rumen-protected fat during the last twelve weeks of gestation", J Dairy Sci, 92, pp.1670~1684 (2009)
- Payne JM, "S joint exercise in animal health and productivity", Br Vet J, 130, pp.34~44 (1974)
- Ebel H, "Magnesium metabolism : a review", J Clin Chem Clin Biochem, 18, pp.257~270 (1980)
- Christopherson RJ, "Effects of temperature and feed intake on plasma concentration of thyroid hormones in beef cattle", Can J Anim Sci, 59, pp.655~661 (1979)