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Effect of inclusion of protected and unprotected tallow in the supplement on the performance of lactating dairy cows

Published online by Cambridge University Press:  02 September 2010

J. J. Murphy  and
D. J. Morgan
J. J. Murphy
Affiliation:
The Agricultural Institute, Moorepark Research Centre, Fermoy, Co. Cork, Ireland
D. J. Morgan
Affiliation:
The Agricultural Institute, Moorepark Research Centre, Fermoy, Co. Cork, Ireland
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Abstract

Three concentrate mixtures were compared in a replicated 3 × 3 Latin square feeding trial with cows in early lactation to evaluate the effect of inclusion of tallow. The concentrates were based on barley and soya bean meal (223 g crude protein per kg dry matter) with either no tallow addition (control group) or with the addition of a protected tallow premix (0·75 spray-dried formaldehyde-treated tallow, 0·25 casein) or an unprotected tallow premix (0·75 spray-dried tallow, 0·25 casein), both added at 138 g/kg. Each concentrate was given at a rate of 8 kg per cow per day and silage was offered ad libitum. The inclusion of unprotected tallow in the concentrate did not significantly change milk yield, fat concentration, lactose concentration or live weight compared with those in the control group. The inclusion of the protected tallow supplement resulted in significantly higher yields of milk (22·9 kg/day), fat (0·95 kg/day) and lactose (1·05 kg/day) compared with those of the control group (21·3 kg/day, 0·79 kg/day, 0·95 kg/day), whilst milk protein concentration was significantly reduced. A digestibility trial with steers showed that, when hay was given with the diets, inclusion of tallow in the concentrate significantly increased the digestible and metabolizable energy concentration of the diets compared with the control diet, but dry matter, energy and fibre digestibility was reduced.

Type
Research Article
Information
Animal Production , Volume 37 , Issue 2 , October 1983 , pp. 203 - 210
Copyright
Copyright © British Society of Animal Science 1983

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References

REFERENCES

Ashes, J. R., Gulati, S. K., Cook, L. J., Scott, T. W. and Donnelly, J. B. 1979. Assessing the biological effectiveness of protected lipid supplements for ruminants. J. Am. Oil Chem. Soc. 56: 522–527.CrossRefGoogle Scholar
Association of Official Agricultural Chemists. 1965. Official Methods of Analysis of the Association of Official Agricultural Chemists. 10th ed.Association of Official Agricultural Chemists, Washington, DC.Google Scholar
Astrup, H. N., Vik-mo, L., Ekern, A. and Bakkk, F. 1976. Feeding protected and unprotected oils to dairy cows. J. Dairy Sci. 59: 426–430.CrossRefGoogle Scholar
Bines, J. A., Brumby, P. E., Storry, J. E., Fulford, ROSEMAHY J. and Braithwaite, G. D. 1978. 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: 135–150.CrossRefGoogle Scholar
Blaxter, K. L. and Clapperton, J. L. 1965. Prediction of the amount of methane produced by ruminants. Br. J. Nutr. 19: 511–522.CrossRefGoogle ScholarPubMed
Clancy, M. J. and Wilson, R. K. 1966. Development and application of a new chemical method for predicting the digestibility and intake of herbage samples. Proc. 10th int. Grassld Congr., Helsinki, pp. 445–453.Google Scholar
Dunkley, W. L., Smith, N. E. and Franke, A. A. 1977. Effects of feeding protected tallow on composition of milk and milk fat. J. Dairv Sci. 60: 1863–1869.CrossRefGoogle ScholarPubMed
Goering, H. K., Wrenn, T. R., Edmondson, L. F., Weyant, J. R., Wood, D. L. and Bitman, J. 1977. Feeding polyunsaturated vegetable oils to lactating cows. J. Dairy Sci. 60: 739–747.CrossRefGoogle ScholarPubMed
Kronfeld, D. S., Donoghue, S., Naylor, J. M., Johnson, K. and Bradley, C. A. 1980. Metabolic effects of feeding protected tallow to dairy cows. J. Dairy Sci. 63: 545–552.CrossRefGoogle ScholarPubMed
Macleod, C. K., Yu., Y and Schaeffer, L. R. 1977. Feeding value of protected animal tallow for high yielding dairy cows. J. Dairy Sci. 60: 726–739.CrossRefGoogle Scholar
Murphy, J. J. and Gleeson, P. A. 1979a. Effect of added tallow as an energy source in dairy rations on cow performance. Ir. J. agric. Res. 18: 245–251.Google Scholar
Murphy, J. J. and Gleeson, P. A. 1979b. Effect on milk production of including high energy ingredients in rations based on molassed beet pulp. An. Foras Taltintais, Anim. Prod. Res. Rep., p. 57.Google Scholar
O'shea, J., Wilson, R. K. and Sheehan, W. 1972. Prediction of silage digestibility by in vitro and chemical methods. Ir. J. agric. Res. 11: 175–179.Google Scholar
Scott, T. W., Cook, L. J. and Mills, S. C. 1971. Protection of dietary polyunsaturated fatty acids against microbial hydrogenation in ruminants. J. Am. Oil Chem. Soc. 48: 358–364.CrossRefGoogle Scholar
Storry, J. E., Brumby, P. E. and Dunkley, W. L. 1980. Influence of nutritional factors on the yield and content of milk fat: protected non-polyunsaturated fat in the diet. Int. Dairv Fed. Bull.. Document 125. pp. 105–125.Google Scholar
Storry, J. E., Brumby, P. E., Hall, A. J. and Johnson, V. W. 1974. Response of the lactating cow to different methods of incorporating casein and coconut oil in the diet. J. Dairv Sci. 57: 61–67.CrossRefGoogle ScholarPubMed
Wrenn, T. R., Bitman, J., Watkrman, R. A., Weyant, J. R., Wood, D. L., Strozinski, L. L. and Hooven, N. W. Jr 1978. Feeding protected and unprotected tallow to lactating cows. J. Dairy Sci. 61: 49–58.CrossRefGoogle Scholar