Document Type : Research Paper
Authors
1 Former M.Sc. Student, Department of animal science, Golpaygan Branch, Islamic Azad University, Golpaygan, Iran
2 Assistant Professor, Department of animal science, Golpayegan Branch, Islamic Azad University, Golpayegan, Iran
Abstract
The present experiment was performed to study the effect of slow-release urea on performance traits and some blood parameters of replacement ewe lambs during its replacement with cotton seed meal. The livestock included 16 heads of Afshari replacement ewe lambs. Treatments include: Control containing cottonseed meal, treatment 1 contains 4 grams of slow-release urea in the daily diet (equivalent to 4.45% of dietary crude protein), treatment 2 contains 8 grams of slow-release urea in the daily diet (equal to 8.8% of dietary crude protein), treatment 3 contains 12 grams of slow-release urea in the daily diet (equal to 13.3% of dietary crude protein). The experimental duration included two weeks of acclimatization and forty days of fattening. The studied traits included functional traits and blood parameters. Functional traits included final body weight, feed intake, added daily gain and feed conversion ratio. Blood parameters included total serum protein, glucose, urea, AST, ALT, cholesterol, triglycerides, estrogen, albumin and LDL. The results showed that there was no significant difference between the four treatments in blood parameters. There was no significant difference in final body weight, feed intake, added daily gain and feed conversion ratio between the treatments. Based on the results, it is possible to use up to 12 grams of slow-release urea daily in the diet of ewe lambs without a negative effect on performance.
Keywords
- Abdollahi Nia K (2016) Evaluation of microbial protein synthesis of different protein sources in the productive diets of dairy cattle University of Mohaghegh Ardabili, Ardaili, M.Sc. Thesis (In Persian)
- Benedeti PDB, Paulino PVR, Marcondes MI, Valadares Filho SC, Martins TS, Lisboa EF, Silva LHP, Teixeria CRV and Duarte MS (2014) Soybean meal replaced by slow release urea in finishing diets for beef cattle. Livestock Science, 165: 51-60.
- Bourg BM, Tedeschi LO, Wickersham TA and Tricarico JM (2012) Effects of a slow-release urea product on performance, carcass characteristics, and nitrogen balance of steers fed steam-flaked corn. Journal of Animal Science, 90: 3914-3923.
- Cherdthong A, Wanapat M, and Wachirapakorn C (2011) Effects of urea–calcium mixture in concentrate containing high cassava chip on feed intake, rumen fermentation and performance of lactating dairy cows fed on rice straw. Livestock Science, 136: 76-84.
- Galo E, Emanuele SM, Sniffen CJ, White JH and Knapp JR ( 2003) Effects of a polymer-coated urea product on nitrogen metabolism in lactating Holstein dairy cattle, J Dairy Sci, 86: 2154-2162.
- Golombeski GL, Kalscheur. Hippen A and Schingoethe D (2006) Slow-release urea and highly fermentable sugars in diets fed to lactating dairy cows. J Dairy Sci, 89(11): 4395-403.
- Holder VB, Tricarico JM, Kim DH, Kristensen NB and Harmon DL (2015) The effects of degradable nitrogen level and slow release urea on nitrogen balance and urea kinetics in Holstein steers. Animal Feed Science and Technology, 200: 57-65.
- Inostroza J, Shaver R, Cabrera V and Tricárico J (2010) Effect of diets containing a controlled-release urea product on milk yield, milk composition, and milk component yields in commercial Wisconsin dairy herds and economic implications. The Professional Animal scientist, 26(2):175-180.
- Khan MI, Ahmed S, Rahman A, Ahmad F, Khalique A, Nisar A, Qadir Z, Umar S, Ullah S and Azam BE (2015). Comparative efficacy of urea and slow-release non-protein nitrogen on performance of Nili-Ravi buffalo calves. Pakistan Journal of Zoology, 47(4), 1097-1102.
- Lizarazo AC, Mendoza GD, Ku J, Melgoza LM and Crosby M (2014) Effects of slow-release urea and molasses on ruminal metabolism of lambs fed with low-quality tropical forage. Small Ruminant Research, 116: 28-31.
- Mahmoudi-Abyane M, Alipour D and Moghimi HR (2017) Effect of using different sources of nitrogen on digestibility and nitrogen balance in Mehraban male lambs. Animal Production Research, 6(4): 27-38. (In Persian)
- Mashayekhi MR, Sari M, Erfani-majd N and Rezaei M ( 2019) Effects of Dietary Slow Release Urea and Molasses on Growth Performance, Digestibility, Ruminal Fermentation and Carcass Traits of Fattening Lambs. Iranian Journal of Animal Science Research, 11(3): 273-291. (In Persian)
- Mousavi Seyyed Ali Kia SA, Teimori Yansari A, Dirandeh E and Hossein Irajian G (2019) Effects of Different Levels of Replacement of Slow-Release Urea with Soybean Meal on Feed Intake, Blood Parameters and Performance of Holstein Lactating Cows in Early Lactation. Journal of Veterinary Research, 74(4): 438-448. (In Persian)
- Ribeiro S, Vasconcelos J, Morais M, Ítavo C and Franco G (2011) Effects of ruminal infusion of a slow-release polymer-coated urea or conventional urea on apparent nutrient digestibility, in situ degradability, and rumen parameters in cattle fed low-quality hay. Animal Feed Science and Technology, 164(1): 53-61.
- Sofi-Siavash, R and Jan Mohammadi H (2000) Animals Nutrition. First edition. Amidi Press, Tabriz, Iran. 840 pp. (in Persian).
- Tedeschi LO, Baker MJ, Ketchen DJ and Fox DG (2002) Performance of growing and finishing cattle supplemented with a slow-release urea product and urea. Canadian Journal of Animal Science, 82(4): 567-573.
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