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اثر متقابل فضای آخور و اندازۀ ذرات علوفه بر فراسنجه‎های رفتار تغذیه‌ای در گوساله‎های مادۀ هلشتاین در حال رشد

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران، کرج، البرز، کد پستی 3158777871، ایران

2 استادیار، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران، کرج، البرز، کد پستی 3158777871، ایران

3 دانشیار، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران، کرج، البرز، کد پستی 3158777871، ایران

چکیده

هدف از این پژوهش بررسی اثر متقابل فضای آخور و اندازۀ ذرات علوفه بر مادۀ خشک مصرفی و رفتار تغذیه‌ای گوساله‌های مادۀ هلشتاین در حال رشد بود. در این آزمایش از 40 راس گوساله در حال رشد هلشتاین با میانگین سنی 12-8 ماه و  میانگین وزن 8/32±6/295 کیلوگرم در طرح چرخشی فاکتوریل 2×2  (چهار دوره با طول هر دوره 25 روز) استفاده شد. در این آزمایش تفاوت جیره‌ها در اندازۀ قطعه‌های علوفه (یونجه و کاه) بود. تیمار‌ها در این آزمایش شامل 1) تیمار با 24 سانتی‌متر فضای آخور و میانگین اندازۀ ذرات علوفه 1/7 میلی‌متر (24/ریز)،  2) تیمار با 24 سانتی‌متر فضای آخور و میانگین اندازۀ ذرات علوفه 2/11 میلی‌متر (24/درشت)، 3) تیمار با 48 سانتی‌متر فضای آخور و میانگین اندازۀ ذرات علوفه 1/7 میلی‌متر (48/ریز)، 4) تیمار با 48 سانتی‌متر فضای آخور و میانگین اندازۀ ذرات علوفه 2/11 میلی‌متر (48/ درشت) بود. نتایج نشان داد، مدت‌زمان خوراک خوردن در طول 24 ساعت برای تیمارهای دارای فضای آخور آزاد (48 سانتی‌متر) در مقایسه با تیمارهای دارای فضای آخور محدود (24 سانتی‌متر) بیشتر بود (05/0p<). همچنیننتایج نشان داد، در صورت دسترسی گوساله‌ها به فضای آخور آزاد، اندازۀ ذرات خوراک تأثیری برشدت رقابت ندارد درحالی‌که در صورت محدود بودن فضای آخور، شدت رقابت برای خوراک‌های حاوی علوفه با اندازۀ ذرات درشت بیشتر از خوراک‌های حاوی علوفه با اندازۀ ذرات ریز بود (05/0p<).

کلیدواژه‌ها


عنوان مقاله [English]

The study of interaction effects of feed bunk space and forage particle size on feeding behaviors in female Holstein calves

نویسندگان [English]

  • Ayub Mohammadi 1
  • Farhang Fatehi 2
  • Abolfazl Zali 3
  • Mahdi Ganjkhanlou 3
1 M.Sc. Student in Animal Nutrition, College of Agriculture & Natural Resources, University of Tehran, Karaj, PC +983158777871, Iran
2 Assistant Professor, College of Agriculture & Natural Resources, University of Tehran, Karaj, PC +983158777871, Iran
3 Associate Professor, College of Agriculture & Natural Resources, University of Tehran, Karaj, PC +983158777871, Iran
چکیده [English]

The aim of this study was to investigate the interaction effects between feed bunk spaces and forage particle size on feeding behaviors of female Holstein calves. This study was done on 40 Holstein heifers aged 8-12 months and average mean weight 295.62±32.86 kg in a factorial change over design 2×2 (four periods with a length of each period of 25 days). The sole differences between treatments was related to forage (alfalfa hay and wheat straw length) as these forage were cut off by cutter with 3 cm pore size sieve (fine diet) and 6 cm pore size sieve (coarse diet) before adding to feeder mixer wagon. Treatments in this experiment included: 1) treatment with 24 cm of feed bunk space and forage with fine particle size (24/fin), 2) treatment with 24 cm of feed bunk space and forage with coarse particle size (24/coarse), 3) treatment with 48 cm of feed bunk space and forage with fine particle size (48/fin), 4) treatment with 48 cm of feed bunk space and forage with coarse particle size (48/coarse). The results showed that the feed intake time was higher during 24 hours for treatments with free bunk space (48 cm) compared to treatments with a limited bunk space (24 cm) (p<0.05). The results showed that in case of access of calves to free bunk space, the feed particle size did not affect the intensity of competition, while in the case of a limited bunk space, the intensity of competition for coarse particle size was greater than that of fine particle size (p<0.05).

کلیدواژه‌ها [English]

  • Factorial change over design
  • feed behaviors
  • feed bunk space
  • female Holstein calve
  • forage particle size
  1. Balch, C. C. (1971). Proposal to use time spent chewing as an index of the extent to which diets for ruminants possess the physical property of fibrousness characteristic of roughages. British Journal of Nutrition, 26(3), 383-392.
  2. Beauchemin, K. A. (1991). Effects of Dietary Neutral Detergent Fiber Concentration and Alfalfa Hay Quality on Chewing, Rumen Function, and Milk Production of Dairy Cows. Journal of Dairy Science, 74(9), 3140-3151.
  3. Devries, T. J. & Keyserlingk, M. A. G. von (2009). Competition for feed affects the feeding behavior of growing dairy heifers. Journal of Dairy Science, 92(8), 3922-3929.
  4. Devries, T. J., Keyserlingk, M. A. G. von, Weary, D. M. & Beauchemin, K. A. (2003). Measuring the Feeding Behavior of Lactating Dairy Cows in Early to Peak Lactation. Journal of Dairy Science, 86(10), 3354-3361.
  5. Fatehi, F., Krizsan, S. J., Gidlund, H. & Huhtanen, P. (2015). A comparison of ruminal or reticular digesta sampling as an alternative to sampling from the omasum of lactating dairy cows. Journal of Dairy Science, 98(5), 3274-3283.
  6. Greter, A. M., Devries, T. J. & Keyserlingk, M. A. G. von (2008). Nutrient intake and feeding behavior of growing dairy heifers. Effects of dietary dilution. Journal of Dairy Science, 91(7), 2786-2795.
  7. Greter, A. M., Kitts, B. L. & Devries, T. J. (2011): Short communication. Limit feeding dairy heifers: effect of feed bunk space and provision of a low-nutritive feedstuff. Journal of Dairy Science, 94(6), 3124-3129.
  8. Greter, A. M., Leslie, K. E., Mason, G. J., McBride, B. W. & Devries, T. J. (2010). Feed delivery method affects the learning of feeding and competitive behavior in dairy heifers. Journal of Dairy Science, 93(8), 3730-3737.
  9. Greter, A. M., Westerveld, R. S., Duffield, T. F., McBride, B. W., Widowski, T. M. & Devries, T. J. (2013). Short communication. Effects of frequency of feed delivery and bunk space on the feeding behavior of limit-fed dairy heifers. Journal of Dairy Science, 96(3), 1803-1810.
  10. Hoffman, P. C., Brehm, N. M., Price, S. G. & Prill-Adams, A. (1996): Effect of Accelerated Postpubertal Growth and Early Calving on Lactation Performance of Primiparous Holstein Heifers. Journal of Dairy Science, 79(11), 2024-2031.
  11. Hoffman, P. C., Simson, C. R. & Wattiaux, M. (2007). Limit feeding of gravid Holstein heifers: Effect on growth, manure nutrient excretion, and subsequent early lactation performance. Journal of Dairy Science, 90(2), 946-954.
  12. Jaster, E. H. & Murphy, M. R. (1983). Effects of Varying Particle Size of Forage on Digestion and Chewing Behavior of Dairy Heifers. Journal of Dairy Science, 66(4), 802-810.
  13. Kahyani, A., Ghorbani, G. R., Khorvash, M., Nasrollahi, S. M. & Beauchemin, K. A. (2013). Effects of alfalfa hay particle size in high-concentrate diets supplemented with unsaturated fat. Chewing behavior, total-tract digestibility, and milk production of dairy cows. Journal of Dairy Science, 96(11), 7110-7119.
  14. Keys, J. E., Pearson, R. E. & Thompson, P. D. (1978). Effect of Feedbunk Stocking Density on Weight Gains and Feeding Behavior of Yearling Holstein Heifers1. Journal of Dairy Science61(4), 448-454.
  15. Kitts, B. L., Duncan, I. J. H., McBride, B. W. & Devries, T. J. (2011). Effect of the provision of a low-nutritive feedstuff on the behavior of dairy heifers limit fed a high-concentrate ration. Journal of Dairy Science, 94(2), 940-950.
  16. Kononoff, P. J. & Heinrichs, A. J. (2003). The Effect of Reducing Alfalfa Haylage Particle Size on Cows in Early Lactation. Journal of Dairy Science, 86(4), 1445-1457.
  17. Krause, K. M. & Combs, D. K. (2003). Effects of Forage Particle Size, Forage Source, and Grain Fermentability on Performance and Ruminal pH in Midlactation Cows. Journal of Dairy Science, 86(4), 1382-1397.
  18. Krause, K. M., Combs, D. K. & Beauchemin, K. A. (2002). Effects of forage particle size and grain fermentability in midlactation cows. II. Ruminal pH and chewing activity. Journal of Dairy Science, 85(8), 1947-1957.
  19. Lammers, B. P., Buckmaster, D. R. & Heinrichs, A. J. (1996). A simple method for the analysis of particle sizes of forage and total mixed rations. Journal of Dairy Science, 79(5), 922-928.
  20. Longenbach, J. I., Heinrichs, A. J. & Graves, R. E. (1999). Feed bunk length requirements for Holstein dairy heifers. Journal of Dairy Science, 82(1), 99-109.
  21. Jaster, E. H. & Murphy, M. R. (1983). Effects of Varying Particle Size of Forage on Digestion and Chewing Behavior of Dairy Heifers. Journal of Dairy Science, 66(4), 802-810.
  22. Maekawa, M., Beauchemin, K. A. & Christensen, D. A. (2002). Chewing Activity, Saliva Production, and Ruminal pH of Primiparous and Multiparous Lactating Dairy Cows. Journal of Dairy Science, 85(5), 1176-1182.
  23. Maulfair, D. D. & Heinrichs, A. J. (2013). Effects of varying forage particle size and fermentable carbohydrates on feed sorting, ruminal fermentation, and milk and component yields of dairy cows. Journal of Dairy Science, 96(5), 3085-3097.
  24. Mertens, D. R. (1997). Creating a system for meeting the fiber requirements of dairy cows. Journal of Dairy Science, 80(7), 1463-1481.
  25. Nasrollahi, S. M., Khorvash, M., Ghorbani, G. R., Teimouri-Yansari, A., Zali, A. & Zebeli, Q. (2012). Grain source and marginal changes in forage particle size modulate digestive processes and nutrient intake of dairy cows. Animal: an International Journal of Animal Bioscience, 6(8), 1237-1245.
  26. Oba, M. & Allen, M. S. (2000). Effects of brown midrib 3 mutation in corn silage on productivity of dairy cows fed two concentrations of dietary neutral detergent fiber: 1. Feeding behavior and nutrient utilization. Journal of Dairy Science, 83(6), 1333-1341.
  27. Van Soest, P. V., Robertson, J. B. & Lewis, B. A. (1991). Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. Journal of Dairy Science, 74(10), 3583-3597.
  28. Wang, H. R., Chen, Q., Chen, L. M., Ge, R. F., Wang, M. Z., Yu, L. H. & Zhang, J. (2017). Effects of dietary physically effective neutral detergent fiber content on the feeding behavior, digestibility, and growth of 8- to 10-month-old Holstein replacement heifers. Journal of Dairy Science, 100(2), 1161-1169.
  29. Yang, W. Z. & Beauchemin, K. A. (2007): Altering physically effective fiber intake through forage proportion and particle length. Chewing and ruminal pH. Journal of Dairy Science, 90(6), 2826-2838.
  30. Zebeli, Q., Tafaj, M., Junck, B., Ölschläger, V., Ametaj, B. N. & Drochner, W. (2008). Evaluation of the response of ruminal fermentation and activities of nonstarch polysaccharide-degrading enzymes to particle length of corn silage in dairy cows. Journal of Dairy Science, 91(6), 2388-2398