Efficacy of Grass and Concentrate Ratio on Milk Urea Nitrogen, Progesterone, and Pregnancy Status in Friesian Holstein
This study was conducted to know the influence of grass to concentrate ratio to milk urea nitrogen (MUN) level, progesterone level and pregnancy status in Friesian Holstein. A total of 18 dairy cows were randomly selected from the population. The cows were grouped based on feed and MUN and pregnancy. Milk sample collection was carried out once on the seventh day after estrus (D7) and tested with the Barthelot method for measuring urea nitrogen levels. Blood samples were taken three times, on the day of estrus (D0), seven days after estrus (D7), and twenty-two days after estrus (D22), and were tested using Immuno-Sorbent Assay (ELISA). Pregnancy examination was carried out at D90 after artificial insemination through rectal palpation. Based on the analysis, grass to concentrate ratio, progesterone level and MUN level showed no significant difference (p>0.05) but it showed significantly different on milk yield (p<0,05). Based on pregnancy status, progesterone level at D22 showed significantly different whereas at D0 and D7 showed insignificantly different. MUN level and grass to concentrate level also showed significantly different. It can be concluded that the ratio of grass and concentrate did not increase MUN level, progesterone level and pregnancy rate.
Arimbawa, I. W. P., Trilaksana, I. G. N. B., & Pemayun, T. G. O. (2012). Gambaran Hormon Progesteron Sapi Bali selama Satu Siklus Estrus. Indonesia Medicus Veterinus, 1(3), 330-336.
Arunvipas, P., Van Leeuwen, J. A., Dohoo, I. R., Keefe, G. P., Burton, S. A., & Lissemore, K. D. (2008). Relationships Among Milk Urea-Nitrogen, Dietary Parameters, and Fecal Nitrogen in Commercial Dairy Herds. Canadian Journal of Veterinary Research, 72(5), 449-453.
Biswajit, R., Brahma, B., Ghosh, S., Pankaj, P. K., & Mandal, G. (2011). Evaluation of Milk Urea Concentration as Useful Indicator for Dairy Herd Management: A Review. Asian Journal of Animal and Veterinary Advantages, 6, 1-19.
Cheng, Z., Chike, F. O., Theerawat, S. U., Susan, C., & Claire, W. (2015). Relationship Between Circulating Urea Concentrations and Endometrial Function in Postpartum Dairy Cows. Animals, 5, 748-773.
Gilmore, H. S., Young, F. J., Patterson, D. C., Wylie, A. R. G., Law, R. A., Kilpatrick, D. J., Elliott, C. T., & Mayne, C. S. (2011). An Evaluation of the Effect of Altering Nutrition and Nutritional Strategies in Early Lactation on Reproductive Performance and Estrous Behavior of High-Yielding Holstein-Friesian Dairy Cows. Journal of Dairy Science, 94, 3510-3526.
Hafez, E. S. E. (2000). Reproduction in Farm Animals. 7th ed. Lippincott William & Wilkins. A Wolter Kluwer Company. Pp: 55-63.
Hammond, A. C. (2013). Update on BUN and MUN as a Guide for Protein Supplementation in Cattle. U.S. Department of Agriculture. Agriculture Research Service. Subtropical Agriculture Research Station. Brooksville, Florida. Pp: 4601-4672.
Jannah, M., Mustofa, I., Utama, S., & Mulyati, S. (2019). Identification of Estrogen Levels in Dairy Cows Based on MUN Levels And Pregnancy Rates. Indian Journal of Public Health Research & Development, 10(12), 1834-1838.
Nourozi, M., Alireza, H. M., Mehran, A., & Mohammad, R. Z. (2010). Milk Urea Nitrogen (MUN) and Fertility in Dairy Farm. Iranian Journal Animal and Veterinary Advance, 9(10), 1519-1525.
Pemayun, T. G. O., & Budiasa, I. G. N. B. D. M. K. (2014). Waktu Inseminasi Buatan yang Tepat pada Sapi Bali dan Kadar Progesteron pada Sapi Bunting. Jurnal Veteriner, 15(3), 425-430.
Rianto, E., Wulandari, M., & Adiwinarti, R. (2007). Pemanfaatan Protein Pada Sapi Jantan Peranakan Ongole dan Peranakan Friesian Holstein yang Mendapat Pakan Rumput Gajah, Ampas Tahu dan Singkong. Prosiding Puslitbangnak Badan Penelitian dan Pengembangan Pertanian Deptan, Bogor. Hal: 64-70.
Romano, J. E. (2011). Pregnancy Diagnosis in Cattle. Veterinary population medicine. College of Veterinary Medicine, University of Minnesota.
Rukkwamsuk, T. (2011). Effect of Nutrition on Reproductive Performance of Postparturient Dairy Cows in the Tropics: A Review. Thai Journal Veterinary Medical, 41, 103-107.
Utomo, B., & Miranti, D. P. (2010). Tampilan Produksi Susu Sapi Perah yang Mendapat Perbaikan Manajemen Pemeliharaan. Caraka Tani, 25(1), 21-25.
Valdez, K. E., Cuneot, S. P., Gorden, P. J., & Turzillo, A. M. (2005). The Role of Thecal Androgen Production in The Regulation of Estradiol Biosynthesis by Dominant Bovine Follicles During The First Follicular Wave. Journal Animal Science, 83, 597-603.
Copyright (c) 2022 Enggar Hardaningtyas, Imam Mustofa, Sri Pantja Madyawati, Rimayanti Rimayanti, Herry Agoes Hermadi, Erma - Safitri
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Authors who publish with this journal agree to the following terms:
1. The journal allows the author to hold the copyright of the article without restrictions;
2. The journal allows the author(s) to retain publishing rights without restrictions;
3. The legal formal aspect of journal publication accessibility refers to Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA).