Effect of whole cottonseed v. sunflower seed on the fatty acid profile of subcutaneous fat, longissimus dorsi and blood of Thai Native and Holstein bulls.
In a 2×2 factorial design, 12 Thai Native and 12 Holstein bulls were fed ad libitum a total mixed ration (20 : 80; roughage : concentrate) with whole cottonseed (WCS) or sunflower seed (SFS) as oilseed sources. The rations contained 7% crude fat and were fed for 90 days. Plasma was taken at three times during the experiment, and at slaughter the longissimus dorsi and subcutaneous fat were sampled for fatty acid analysis. Ration did not affect rumen fermentation parameters. The plasma fatty acid profile was not affected by ration. In subcutaneous fat, a ration×breed interaction for the saturated fatty acid (SFA) and c9t11 CLA proportions was observed, resulting from larger differences between the rations in Thai Native compared with Holstein bulls. The WCS ration resulted in higher proportions of SFA and lower proportions of monounsaturated fatty acids and c9,t11 CLA compared with the SFS ration (P<0.01). In the intramuscular fat, the WCS ration was also associated with a lower c9t11 CLA proportion (P<0.01) and higher SFA proportion (P<0.05). The intramuscular proportion of polyunsaturated acids was higher and the proportion of SFA was lower in Thai Native compared with Holstein bulls (P<0.05), irrespective of ration.
1Department of Animal Science, Faculty of Agriculture,Khon Kaen University,123 Mittraphap,Khon Kaen 40002,Thailand.
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Polviset
2Department of Farm Animal Health,Division of Nutrition, Faculty of Veterinary Medicine,Utrecht University,PO Box 80151,3508 TD Utrecht,The Netherlands.
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JT
Schonewille
2Department of Farm Animal Health,Division of Nutrition, Faculty of Veterinary Medicine,Utrecht University,PO Box 80151,3508 TD Utrecht,The Netherlands.
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Everts
1Department of Animal Science, Faculty of Agriculture,Khon Kaen University,123 Mittraphap,Khon Kaen 40002,Thailand.
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Wachirapakorn
3Department of Agricultural Technology and Environment, Faculty of Sciences and Liberal Arts,Rajamangala University of Technology Isan,744 Suranarai,Nakhon Ratchasima 30000,Thailand.
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C
Yuangklang
4Laboratory of Animal Nutrition and Animal Product Quality,Department of Animal Production,Ghent University,Proefhoevestraat 10,9090 Melle,Belgium.
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E
Claeys
4Laboratory of Animal Nutrition and Animal Product Quality,Department of Animal Production,Ghent University,Proefhoevestraat 10,9090 Melle,Belgium.
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De Smet
D000818:Animals; D002417:Cattle / Q000502:physiology*; D003369:Cottonseed Oil / Q000378:metabolism*; D004043:Dietary Fiber / Q000378:metabolism; D005227:Fatty Acids / Q000032:analysis*; D005229:Fatty Acids, Monounsaturated / Q000032:analysis; D005285:Fermentation; D006368:Helianthus / Q000378:metabolism*; D044243:Linoleic Acids, Conjugated / Q000032:analysis; D008297:Male; D064170:Paraspinal Muscles / Q000378:metabolism; D012417:Rumen / Q000378:metabolism; D012639:Seeds / Q000378:metabolism; D050151:Subcutaneous Fat / Q000737:chemistry
D003369:Cottonseed Oil; D004043:Dietary Fiber; D005227:Fatty Acids; D005229:Fatty Acids, Monounsaturated; D044243:Linoleic Acids, Conjugated; C046938:9,11-linoleic acid
beef; lipids; sunflower seed; whole cottonseed