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Structural and metabolic responses of Holstein heifers to rumen undegradable protein supply | ||
| Iran Agricultural Research | ||
| دوره 44، شماره 2، 2025، صفحه 79-87 اصل مقاله (478.14 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22099/iar.2025.53330.1693 | ||
| نویسندگان | ||
| Hosein Mohammadkhani1؛ Tahere Amirabadi Farahani* 1؛ Najme Eslamian Farsuni2 | ||
| 1Department of Animal Science, Agricultural College, Shahrekord University, Shahrekord, I. R. Iran | ||
| 2Department of Animal Science, Chaharmahal and Bakhtiari Agricultural and Natural Resources Research and Education Center, AREEO, Shahrekord, I. R. Iran | ||
| چکیده | ||
| This study evaluated the effects of various levels of rumen-undegradable protein (RUP) on performance, blood metabolites, and structural growth of Holstein dairy heifers. Seventy-two Holstein heifers (initial body weight = 128.7 ± 15.5 kg; age = 4 ± 0.31 months) were allocated into 12 pens, with 6 heifers per pen. The pens were randomly assigned to 1 of 3 dietary treatments over a period of 60 days. The dietary treatments consisted of three percentages of RUP (28%, 33%, and 38% of crude protein). Feed intake was recorded from each pen daily. The heifers were weighed every two weeks. Blood samples were taken on day 1, 30, and 60. Body condition score, back fat thickness, and skeletal growth were recorded on day 1 and 60 of the experiment. Increasing dietary RUP levels reduced dry matter, crude protein, and RDP intakes (P < 0.05), whereas it enhanced RUP and MP intakes (P < 0.01). Feeding different levels of RUP had no effect on final body weight, body condition score (BCS(, and back fat thickness (P > 0.05). Serum total protein and cholesterol concentrations increased (P < 0.05) in response to higher dietary RUP, whereas serum urea concentration decreased (P < 0.05). The RUP supplementation positively influenced wither height and body length growth (P < 0.01), but it did not affect other growth parameters (P > 0.10). Overall, supplementing prepubertal heifer diets with increased RUP levels enhanced the supply of metabolizable protein, improving structural growth and metabolic status without increasing fat deposition. | ||
| کلیدواژهها | ||
| Average daily gain؛ Blood metabolites؛ Prepubertal heifer؛ Rumen undegradable protein؛ Skeletal growth | ||
| مراجع | ||
|
Akins, M. S. (2016). Dairy heifer development and nutrition management. Veterinary Clinics: Food Animal Practice, 32(2), 303-317.
https://doi.org/10.1016/j.cvfa.2016.01.004
Al Ani, J. A. R. T., Al-Wazeer, A. A., Kareem, A. N., & Shaker, R. M. (2021). Effects of crude protein degradability on some blood parameters of ruminants. In IOP Conference Series: Earth and Environmental Science, 910(1), 012030. https://doi.org/10.1088/1755-1315/910/1/012030
Albino, R. L., Marcondes, M. I., Akers, R. M., Detmann, E., Carvalho, B. C., & Silva, T. E. (2015). Mammary gland development of dairy heifers fed diets containing increasing levels of metabolisable protein: Metabolisable energy. Journal of Dairy Research, 82(1), 113-120.
https://doi.org/10.1017/S0022029914000697
AOAC International. (1990). Official methods of analysis. (15th ed). Arlington, VA: AOAC International.
Capuco, A. V., Dahl, G. E., Wood, D. L., Moallem, U., & Erdman, R. E. (2004). Effect of bovine somatotropin and rumen-undegradable protein on mammary growth of prepubertal dairy heifers and subsequent milk production. Journal of Dairy Science, 87(11), 3762-3769.
https://doi.org/10.3168/jds.S0022-0302 (04)73514-6
Corea, E. E., Castro-Montoya, J., Mendoza, M. V., López, F. M., Martinez, A., Alvarado, M. E., & Dickhoefer, U. (2020). Effect of forage source and dietary rumen-undegradable protein on nutrient use and growth in dairy heifers. Animal Feed Science and Technology, 269, 114658.
https://doi.org/10.1016/j.anifeedsci.2020.114658
Fumagalli, R., Paoletti, R., & Howard, A. N. (1978). Hypocholesterolaemic effect of soya. Life Sciences, 22(11), 947-952. https://doi.org/10.1016/0024-3205(78)90359-4
Gabler, M. T., & Heinrichs, A. J. (2003). Dietary protein to metabolizable energy ratios on feed efficiency and structural growth of prepubertal Holstein heifers. Journal of Dairy Science, 86(1), 268-274. https://doi.org/10.3168/jds.S0022-0302 (03)73605-4
Geiger, A. J., Parsons, C. L. M., & Akers, R. M. (2016). Feeding a higher plane of nutrition and providing exogenous estrogen increases mammary gland development in Holstein heifer calves. Journal of Dairy Science, 99(9), 7642-7653.
https://doi.org/10.3168/jds.2016-11283
Grummer, R. R., & Carroll, D. J. (1988). A review of lipoprotein cholesterol metabolism: Importance to ovarian function. Journal of Animal Science, 66(12), 3160-3173. https://doi.org/10.2527/jas1988.66123160x
Hammond, A. C. (1997). Update on BUN and MUN as a guide for protein supplementation in cattle. In Proc. Florida Ruminant Nutrition Symposium, University. Florida, Gainesville (pp. 43-52).
Hawkins, D. E., Niswender, K. D., Oss, G. M., Moeller, C. L., Odde, K. G., Sawyer, H. R., & Niswender, G. D. (1995). An increase in serum lipids increases luteal lipid content and alters the disappearance rate of progesterone in cows. Journal of Animal Science, 73(2), 541-545.
https://doi.org/10.2527/1995.732541x
Howard, A. N., & Gresham, G. A. (1968). Dietary aspects of atherosclerosis and thrombosis. International Journal of Vitamin research, 38(5), 545-559.
Ipharraguerre, I. R., & Clark, J. H. (2005). Impacts of the source and amount of crude protein on the intestinal supply of nitrogen fractions and performance of dairy cows. Journal of Dairy Science, 88, E22-E37. https://doi.org/10.3168/jds.S0022-0302 (05)73134-9
Iranian Council of Animal Care. (1995). Guide to the care and use of experimental animals, Vol. 1. Isfahan: Isfahan University of Technology.
Jonker, J. S., Kohn, R. A., & Erdman, R. A. (1998). Using milk urea nitrogen to predict nitrogen excretion and utilization efficiency in lactating dairy cows. Journal of Dairy Science, 81(10), 2681-2692. https://doi.org/10.3168/jds.S0022-0302 (98)75825-4
Khan, M. A., Lee, H. J., Lee, W. S., Kim, H. S., Ki, K. S., Hur, T. Y., & Choi, Y. J. (2007). Structural growth, rumen development, and metabolic and immune responses of Holstein male calves fed milk through step-down and conventional methods. Journal of Dairy Science, 90(7), 3376-3387. https://doi.org/10.3168/jds.2007-0104
Lammers, B. P., & Heinrichs, A. J. (2000). The response of altering the ratio of dietary protein to energy on growth, feed efficiency, and mammary development in rapidly growing prepubertal heifers. Journal of Dairy Science, 83(5), 977-983. https://doi.org/10.3168/jds.S0022-0302 (00)74962-9
Markusfeld, O., & Ezra, E. (1993). Body measurements, metritis, and postpartum performance of first lactation cows. Journal of Dairy Science, 76(12), 3771-3777. https://doi.org/10.3168/jds.S0022-0302 (93)77720-6
Moallem, U., Dahl, G. E., Duffey, E. K., Capuco, A. V., & Erdman, R. A. (2004). Bovine somatotropin and rumen-undegradable protein effects on skeletal growth in prepubertal dairy heifers. Journal of Dairy Science, 87(11), 3881-3888.
https://doi.org/10.3168/jds.S0022-0302 (04)73527-4
Mohammadzadeh, M., Kazemi-Bonchenari, M., HosseinYazdi, M., & Mirzaei, M. (2021). Forage source (alfalfa hay vs wheat straw) and rumen undegradable to degradable protein ratio: Effects on growth performance, microbial protein yield, digestibility, blood metabolites, and behavior of Holstein dairy calves. Spanish Journal of Agricultural Research, 19(3), e0610-e0610. https://doi.org/10.5424/sjar/2021193-16733.
National Academies of Sciences, Engineering, and Medicine (NASEM). (2021). Nutrient requirements of dairy cattle: Eighth revised edition. Washington, DC, USA: National Academic Science.
Radcliff, R. P., Vandehaar, M. J., Chapin, L. T., Pilbeam, T. E., Beede, D. K., Stanisiewski, E. P., & Tucker, H. A. (2000). Effects of diet and injection of bovine somatotropin on prepubertal growth and first-lactation milk yields of Holstein cows. Journal of Dairy Science, 83(1), 23-29.
https://doi.org/10.3168/jds.S0022-0302 (00)74850-8
Reiser, R., Henderson, G. R., O''Brien, B. C., & Thomas, J. (1977). Hepatic 3-hydroxy-3-methylglutaryl coenzyme-A reductase of rats fed semipurified and stock diets. The Journal of Nutrition, 107(3), 453-457. https://doi.org/10.1093/jn/107.3.453
Sejrsen, K., Huber, J. T., Tucker, H. A., & Akers, R. M. (1982). Influence of nutrition on mammary development in pre-and postpubertal heifers. Journal of Dairy Science, 65(5), 793-800.
https://doi.org/10.3168/jds.S0022-0302 (82)82268-6
Sieber, M., Freeman, A. E., & Kelley, D. H. (1988). Relationships between body measurements, body weight, and productivity in Holstein dairy cows. Journal of Dairy Science, 71(12), 3437-3445. https://doi.org/10.3168/jds.S0022-0302 (88)79949-X
Silva, A. L., Detmann, E., Dijkstra, J., Pedroso, A. M., Silva, L. H. P., Machado, A. F., Sousa, F. C., Dos Santos, G. B., & Marcondes, M. I. (2018). Effects of rumen-undegradable protein on intake, performance, and mammary gland development in prepubertal and pubertal dairy heifers. Journal of Dairy Science, 101(7), 5991-6001. https://doi.org/10.3168/jds.2017-13230
Terpstra, A. H., Hermus, R. J., & West, C. E. (1983). The role of dietary protein in cholesterol metabolism. Nutrients and Energy, 42, 1-55.
https://doi.org/10.1159/000408349
Tomlinson, D. L., James, R. E., Bethard, G. L., & McGilliard, M. L. (1997). Influence of undegradability of protein in the diet on intake, daily gain, feed efficiency, and body composition of Holstein heifers. Journal of Dairy Science, 80(5), 943-948. https://doi.org/10.3168/jds.S0022-0302 (97)76018-1
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. https://doi.org/10.3168/jds.S0022-0302 (91)78551-2
Whitlock, B. K., VandeHaar, M. J., Silva, L. F. P., & Tucker, H. A. (2002). Effect of dietary protein on prepubertal mammary development in rapidly growing dairy heifers. Journal of Dairy Science, 85(6), 1516-1525.
https://doi.org/10.3168/jds.S0022-0302 (02)74221-5
Wildman, E. E., Jones, G. M., Wagner, P. E., Boman, R. L., Troutt Jr, H. F., & Lesch, T. N. (1982). A dairy cow body condition scoring system and its relationship to selected production characteristics. Journal of Dairy Science, 65(3), 495-501. https://doi.org/10.3168/jds.S0022-0302 (82)82223-6
Zanton, G. I., & Heinrichs, A. J. (2007). The effects of controlled feeding of a high-forage or high-concentrate ration on heifer growth and first-lactation milk production. Journal of Dairy Science, 90(7), 3388-3396. https://doi.org/10.3168/jds.2007-0041
Zhang, B., Wang, C., Liu, H., Liu, J., & Liu, H. (2016). Effects of dietary protein level on growth performance and nitrogen excretion of dairy heifers. Asian-Australasian Journal of Animal Sciences, 30(3), 386. https://doi.org/10.5713/ajas.16.0214 | ||
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