Asian-Australasian Journal of Animal Sciences (아세아태평양축산학회지)

Asian Australasian Association of Animal Production Societies (아세아태평양축산학회)
권호 표지
DOI QR코드

DOI QR Code

Effects of Processing Methods and Variety of Rapeseed Meal on Ruminal and Post Ruminal Amino Acids Digestibility

  • Chen, Xibin (College of Animal Science and Technology, Huazhong Agricultural University) ;
  • Qin, S. (Institute of Hydrobiology, Chinese Academy of Science)
  • Received : 2004.09.22
  • Accepted : 2005.01.15
  • Published : 2005.06.01

Abstract

The objective of this study was to determine the effects of processing method and rapeseed variety on ruminal and intestinal protein digestibility of rapeseed meal in steers. Intestinal amino acid digestibility was assessed with an in situ ruminal incubation and precision-fed rooster bioassay. In this experiment one traditional rapeseed meal sample (sample A, prepress extraction) and three double low rapeseed meal samples (sample B, prepress extraction, sample C, screw press and sample D, low temperature press) were placed in polyester bags(8 cm${\times}$12 cm) and suspended in the ventral rumen of steers for 16 h. The residues of in situ incubations were intubated to roosters. Total excreta were collected for 48 h after incubation and then desiccated and amino acid concentrations were determined. Results showed that in ruminal incubation the degradation rate of amino acid and crude protein was higher for traditional rapeseed meal sample A than for double low rapeseed meal sample B, but was much lower than for double low sample C and D. In the group of double low rapeseed meal samples, sample D processed by low temperature press had the highest degradation rate of amino acids in the rumen. For all amino acids, the digestibility of the residual protein as measured by the precision-fed rooster bioassay tended to be lower for sample B than for sample A, which had the same processing method with sample B, and in the group of double low rapeseed meals, sample B had similar digestibility of amino acid in residual protein to sample D and higher than that of sample C. However, although the total amino acid availability involving the digestibility of amino acids in the rumen and rooster bioassay of double low rapeseed meal sample D (low temperature press) was higher than those of the other three samples by 7 to 9 percent, there were no significant differences. Results indicated that processing method markedly affected ruminal and post ruminal amino acid digestibility of rapeseed meal when the temperature exceeded 110$^{\circ}C$. Rapeseed meal that had a high content of fiber was not suitable for dry heat treatment at higher temperatures or the amino acids digestibility in rumen and total availability of amino acids could be reduced. Results also suggested the variety of rapeseed meal had no significant effect on the digestibility and availability of amino acids.

Keywords

Rapeseed Meal;Amino Acid Availability;Bypass Protein

File

Download PDF

References

  1. Aldrich, C. G., N. R. Merchen, C. M. Parsons, H. S. Hussein, S. Ingram and J. R. Clodfelter. 1997. Assessment of postruminal amino acids digestibility of roasted and extruded whole soybeans with the precision-fed rooster assay. J. Anim. Sci. 75:3046-3051.
  2. Chen Xibin and L. D. Campbell. 2003. Assessment of ruminal and post ruminal amino acid digestibility of Chinese and Canadian rapeseed (Canola) meals. Asian-Aust. J. Anim. Sci. 16(7):979-982.
  3. Parsons, C. M. 1994. Current status of amino acids digestibility work reviewed. Feedstuff, 63:30.
  4. Sibbald, I. R. 1987. Estimation of available amino acid in feedstuffs for poultry and pigs: a review with emphasis on balance experiments. Can. J. Anim. Sci. 67:221-300. https://doi.org/10.4141/cjas87-028
  5. Susmel, P., B. Stefan, C. R. Mills and Manuela Cardido. 1989. Change in amino acid composition of different protein sources after rumen incubation. J. Br. Sci. Anim. Prod. 49:375.
  6. Evan Titgemeyer, N. Merchen, Y. Han, C. Parsons and D. Baker. 1990. Assessment of intestinal amino acid availability in cattle by use of the precision-fed cecectomized rooster assay. J. Dairy Sci. 73:690-693.
  7. Moshaghi Nia, S. A. and J. R. Ingalls. 1991. Effect of heating on canola meal protein degradation in the rumen and digestion in the lower gastrointestinal tract of steers. Can. J. Anim. Sci. 72:83-88.
  8. Griffin, C. D., Jr. L. D. Bunting, L. S. Sticker and B. Vora. 1993. Assessment of protein quality in heat-treated soybean products using the growth responses of lambs and calves and a nylon bag-rooster assay. J. Anim. Sci. 71:1924-1931.
  9. Faldet, M. A. and L. D. Satter. 1991. Feeding heat-treated full fat soybeans to cows in early lactation. J. Dairy Sci. 74:3047-3054.
  10. Feng, Y. L. 1989. The suggested methods of rumen nylon bags.
  11. Parsons, C. M. 1985. Influence of caecectomy on digestibility of amino acids by roosters fed distillers’ dried grain with solubles. J. Agric Sci. 104:469-472. https://doi.org/10.1017/S0021859600044178
  12. Li, J. F., Z. C. Gao and Y. X. Jiang. 1993. Effect of different processing methods on the contents and availabilities of amino acids in rapeseed meal. Sci. Agri. Sinica. 26(6):68-76.
  13. Huard, S., H. V. Petit, J. R. Seoane and R. Rioux. 1998. Effects of mechanical treatment of whole canola seeds on performance, diet digestibility and rumen parameters of lambs fed grass silage. Can. J. Anim. Sci. 78:657-664.
  14. Sibbald, I. R. 1979. A bioassay for available amino acids and TME in feedstuffs. Poult. Sci. 58:668-671. https://doi.org/10.3382/ps.0580668
  15. Moshaghi, S. A. and J. R. Ingalls. 1995. Evaluation of moist heat treatment of canola meal on digestion in the rumen, small intestine and total digestive tract of steers. Can. J. Anim. Sci. 75:279-283.
  16. Kendall, E. M., J. R. Ingalls and R. J. Bolia. 1991. Variability in the rumen degradability and postruminal digestion of dry matter, nitrogen and amino acids of canola meal. Can. J. Anim. Sci. 71:739-754.