Effects of conditioning temperature and length-diameter ratio of ring die on quality of pelleted feeds

被引：0
|
作者：
Duan H. [1 ,2 ]
Li J. [1 ,3 ]
Qin Y. [4 ]
Li J. [1 ,3 ]
Yang J. [1 ,3 ]
Dong Y. [1 ,3 ]
机构：
[1] Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing
[2] Institute of Food and Nutrition Development, Ministry of Agriculture, Beijing
[3] Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Beijing
[4] Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing
来源：
Qin, Yuchang (qinyuchang@caas.cn) | 2018年 / Chinese Society of Agricultural Engineering卷 / 34期
关键词：
Agricultural products; Feed; Processing; Temperature;
D O I：
10.11975/j.issn.1002-6819.2018.11.035
中图分类号：
学科分类号：
摘要：
In the feed processing process, the main factors including the composition of the raw materials, the conditioning and pelleting, and the size of the crushed particles affected the feed quality. With the advent of no-resistance/anti-resistance era, probiotics and other heat-sensitive antibiotic substitutes are used in feed formulations. In the feed processing process, higher tempering temperatures cause the loss of heat-sensitive feed ingredients such as probiotics. The lower temperature causes the lower sterilization. The objectives of this study were to systematically determine the effects of conditioning temperature and length-diameter ratio of ring die on feed quality and heat-sensitivity ingredients retention rate. Bulk raw materials of this formulation were processed by the expander, and the starch gelatinization degree was 69.13%. The ripened mash feed was pelleted with different temperature conditioning, and the length-diameter ratio of ring die was 6:1, 8:1 and 10:1, and the conditioning temperature was 50, 55, 60 and 65℃, respectively. The results are as follows: When the length-diameter ratio of ring die was 6:1, the starch gelatinization degree of 65℃ group was significantly higher than 50, 55 and 60℃ group; the PDI (pellet durability index) of 65℃ group was significantly higher than 50℃ group; the percentage of shaped pellets of 50℃ group was significantly lower than the other groups; when the length-diameter ratio of ring die was 8:1, the hardness of 65℃ group was significantly higher than the other 3 groups, the PDI of 60℃ group was significantly higher than that of 50 and 55℃ groups, and the particle formation rate of 50℃ group was significantly lower than that of 65℃ group; when the length-diameter ratio of ring die was 10:1, power consumption per ton of 50℃ group was significantly higher than other treatment groups. The interaction between the conditioning temperature and the length-diameter ratio of ring die has a significant effect on the gelatinization degree of the starch; the conditioning temperature and the length-diameter ratio of ring die have a very significant effect on the particle hardness and the PDI; the length-diameter ratio of the die hole has a very significant effect on the retention rate of lactic acid bacteria; the conditioning temperature, the length-diameter ratio and their interaction have a very significant effect on the electricity consumption of tons of material. The results showed that: The feed quality is affected by the conditioning temperature and the ratio of die length to diameter. When raw materials are pelleted in low conditioning temperature, the length-diameter ratio of ring die plays higher effect than conditioning temperature, 55~60℃ is recommended, and length-diameter ratio of ring die of 6:1 is recommended. It is of great significance to save feed production cost and materials costs and to realize the accuracy of diet. With the advent of non-antibiotics, the application of heat-sensitive antibiotic substitutes or high-price heat-sensitive additives in diet, this process will surely play an essential role. © 2018, Editorial Department of the Transactions of the Chinese Society of Agricultural Engineering. All right reserved.
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页码：278 / 283
页数：5
相关论文
共 29 条
  • [1] Svihus B., Klovstad K.H., Perez V., Et al., Physical and nutritional effects of pelleting of broiler chicken diets made from wheat ground to different coarsenesses by the use of roller mill and hammer mill, Animal Feed Science And Technology, 117, pp. 281-293, (2004)
  • [2] Van Der P., Bosch M.W., Effect of expander conditioning and or pelleting of a diet containing tapioca pea and soybean meal on the total tract digestibility in growing pigs, Animal Feed Science and Technology, pp. 289-295, (1997)
  • [3] Liermann W., Berk A., Boschen V., Et al., Effects of particle size and hydro-thermal treatment of feed on performance and stomach health in fattening pigs, Archives of Animal Nutrition, 69, pp. 455-472, (2015)
  • [4] Amornthewaphat N., Attamangkune S., Extrusion and animal performance effects of extruded maize quality on digestibility and growth performance in rats and nursery pigs, Animal Feed Science and Technology, 144, pp. 292-305, (2008)
  • [5] Behnke K.C., Feed manufacturing technology: Current issues and challenges, Animal Feed Science And Technology, 62, pp. 49-57, (1996)
  • [6] Medel P., Latorre M.A., De Blas C., Et al., Heat processing of cereals in mash or pellet diets for young pigs, Animal Feed Science and Technology, 113, pp. 127-140, (2004)
  • [7] Lundblad K.K., Hancock J.D., Behnke K.C., Et al., The effect of adding water into the mixer on pelleting efficiency and pellet quality in diets for finishing pigs without and with use of an expander, Animal Feed Science and Technology, 150, pp. 295-302, (2009)
  • [8] Lewis L.L., Stark C.R., Fahrenholz A.C., Et al., Evaluation of conditioning time and temperature on gelatinized starch and vitamin retention in a pelleted swine diet, Journal of Animal Science, 93, 2, pp. 615-619, (2015)
  • [9] Spring P., Newman K.E., Wenk C., Et al., Effect of pelleting temperature on the activity of different enzymes, Poultry Science, 75, 3, pp. 357-361, (1996)
  • [10] Svihus B., Sacranie A., Denstadli V., Et al., Nutrient utilization and functionality of the anterior digestive tract caused by intermittent feeding and inclusion of whole wheat in diets for broiler chickens, Poultry Science, 89, 12, pp. 2617-2625, (2010)
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