Response of lactating cows to supplemental rumen protected methionine and Niacin

Abstract

Eight Chinese Holstein cows were used in a 4 × 4 Latin square design to determine the effects of rumen protected methionine (RPMet) and Niacin on milk yield and milk composition of lactating cows with 14 d adaptation and 6-d sampling periods. The cows were fed the control diet or the control diet plus RPMet (25 g·d^-1), niacin (6 g·d^-1), or RPMet (25 g·d^-1) + niacin (6 g·d^-1). The results showed that RPMet supplementation in the diet increased 4% fat corrected milk (FCM) yield (P < 0.05) and milk fat percentage (P < 0.05). However, supplemental RPMet had no effect on the solid non fat (SNF) (P > 0.05) and lactose percentage (P > 0.05). Dietary niacin supplementation increased milk yield (P < 0.05), milk protein percentage (P < 0.05) and lactose percentage (P < 0.05), but had no effect on milk fat percentage (P > 0.05) and SNF (P > 0.05). RPMet supplementation in the diet of lactating cows significantly decreased serum urea nitrogen (P < 0.01) and glucose contents (P < 0.05), but had no effects on nonesterified fatty acids (NEFA), total cholesterol and triglyceride (P > 0.05). Niacin supplementation influenced the contents of glucose and NEFA in serum, but had no effects on the urea nitrogen, total cholesterol and triglyceride (P > 0.05).

References

1. Bell A W 1979 Lipid metabolism in the liver and selected tissues andin the whole body of ruminant animalsProgLipid Res18117164
2. Broderick G A Kowalczyk T Satter L D 1970 Milk production response to supplementationwith encapsulated methionine per os or casein per abomasumJ Dairy Sci5317141721
3. Carlson L A Oro L 1962 The effectof nicotinic acid on the plasma free fatty acidsActa Med Scand172641645
4. Casper D P Schingoethe D J 1988 Protectedmethionine supplementation to a barley-based diet for cows duringearly lactationJ Dairy Sci71164172
5. Cervantes A Smith T R Young J W 1996 Effects of nicotinamide on milk compositionand production of dairy cows fed supplemental fatJ Dairy Sci79105113
6. Chapoutot P Schmidely P Sauvant D Robert J C Sloan B 1992 Influence of a ruminallyprotected blend of methionine and lysine (ML) on the dairy cow nutritionand productionJ Dairy Sci75(Suppl 1)199
7. Chow J M DePeters E J Baldwin R L 1990 Effect of rumen protected methionine andlysine on casein in milk when diets high in fat or concentrate arefedJ Dairy Sci7310511061
8. Drackley J K Lacount D W Elliott J P Klusmeyer T H Overton T R Clark J H Blum S A 1998 Supplement fat and nicotinic acid for Holstein cows during an entirelactationJ Dairy Sci81201214
9. Dufva G S Bartley E E Dayton A D Riddell D O 1983 Effect of niacin supplementation on milk production and ketosis ofdairy cattleJ Dairy Sci6623292336
10. Emery R S Liesman J S Herdt T H 1992 Metabolism of long chain fatty acids byruminant liverJ Nutr122832837
11. Erickson P S Murphy M R Clark J H 1992 Supplementation of dairy cow diets withcalcium salts of long-chain fatty acids and nicotinic acid in earlylactationJ Dairy Sci7510781089
12. Horner J L Coppock C E Schelling G T Labore J M Nave D H 1986 Influence of niacin andwhole cottonseed on intake, milk yield and composition, and systemicresponses of dairy cowsJ Dairy Sci6930873093
13. Jaster E H Ward N E 1990 Supplementalnicotinic acid or nicotinamide for lactating dairy cowJ Dairy Sci7328802887
14. Minor D J Trower S L Strang B D Shaver R D Grummer R R 1998 Effects of nonfiber carbohydrateand niacin on periparturient metabolic status and lactation of dairycowsJ Dairy Sci81189200
15. Noftsger S St-pierre N R 2002 Supplementationof methionine and selection of highly digestible rumen undegradableprotein to improve nitrogen efficiency for milk productionJ Dairy Sci86958969
16. Papas A M Sniffen C J Muscato T V 1984a Effectiveness of rumen-protected methioninefor delivering methionine postruminally in dairy cowsJ Dairy Sci67545552
17. Papas A M Vicini J L Clark J H Peirce-Sandner S 1984b Effect of rumen-protected methionine on plasma free aminoacids and production by dairy cowsJ Nutr11422212227
18. Pruekvimolphan S Grummer R R 2001 Lactationresponses to sulfur-containing amino acids from feather meal or rumenprotected methionineJ Dairy Sci8425152522
19. Riddell D Bartley E E Dayton A D 1981 Effect of nicotinic acid on microbialprotein synthesis in vitro and on dairy cattle growth and milk productionJ Dairy Sci64782791
20. SAS Institute. 1999 SAS User's Guide: Statistics,Version 6 ed. SAS Institute, Inc., Cary, NC
21. Socha M T Putnam D E Garthwaite B D Whitehouse N L Kierstead N A Schwab C G Ducharme G A Robert J C 2005 Improving intestinal aminoacid supply of pre- and postpartum dairy cows with rumen-protectedmethionine and lysineJ Dairy Sci8811131126
22. Veira D Seoane J R Proulx J G 1991 Utilization of grass silage by growingcattle: effect of a supplement containing ruminally protected aminoacidsJ Anim Sci6947034709
23. Williams L R Martz F A Hilderbrand E S 1970 Feeding encapsulated methionine supplementto lactating cowsJ Dairy Sci5317091713
24. Wu Z Fisher R J Polan C E Schwab C G 1997 Lactational performance of cows fed low or high ruminally undegradableprotein prepartum and supplemental methionine and lysine postpartumJ Dairy Sci80722729
25. Yang C M J Schingoethe D J Casper D P 1986 Protected methionine and heat-treatedsoybean meal for high producing dairy cowsJ Dairy Sci6923482357