نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم دامی، واحد گلپایگان، دانشگاه آزاد اسلامی، گلپایگان، ایران،
2 نویسنده مسئول، گروه علوم دامی، واحد گلپایگان، دانشگاه آزاد اسلامی، گلپایگان، ایران
3 گروه علوم دامی، واحد شاهین شهر، دانشگاه آزاد اسلامی، شاهین شهر، ایران،
چکیده
در این پژوهش، اثر اوره آهسته رهش بر صفات عملکردی و فراسنجه‌های خونی شیشک‌های ماده و جایگزینی آن با کنجاله تخم پنبه با استفاده از تعداد 16 راس شیشک نژاد افشاری در چهار گروه آزمایشی شامل: 1) جیره شاهد حاوی کنجاله پنبه دانه، 2)جیره حاوی چهار گرم اوره آهسته رهش در جیره روزانه (معادل 4/45 درصد پروتئین خام جیره)، 3) جیره حاوی هشت گرم اوره آهسته رهش در جیره روزانه(معادل 8/8 درصد پروتئین خام جیره) و 4) جیره حاوی 12 گرم اوره آهسته رهش در جیره روزانه (معادل 13/3 درصد پروتئین خام جیره) به مدت 54 روز (دو هفته دوره عادت پذیری و چهل روز دوره پرواری) بررسی شد. وزن پایان دوره، مصرف خوراک، افزایش وزن روزانه و ضریب تبدیل غذایی بررسی شد. در انتهای دوره از بره ها خونگیری شد و فراسنجه‌های پروتئین تام سرم، گلوکز، اوره، آلانین آمینوترانسفراز ، آسپارتات آمینوتراسنفراز، کلسترول، تری گلیسیرید، استروژن، آلبومین و LDL اندازه گیری شد. میزان پروتئین تام و آلبومین سرم در شیشک هائی که هشت یا 12 گرم اوره دریافت کردند کمتر از گوسفندان شاهد بود (p<0/05 ). سایر فراسنجه‌های خونی تحت تاثیر تیمارهای آزمایش قرار نگرفت. تفاوتی در وزن پایان دوره، افزایش وزن روزانه، مصرف خوراک و ضریب تبدیل غذایی بین تیمارها مشاهده نشد. بر اساس نتایج حاصل، می توان تا روزانه تا 12 گرم اوره آهسته رهش در جیره شیشک های ماده بدون تاثیر منفی بر عملکرد استفاده کرد.
کلیدواژه‌ها
عنوان مقاله [English]
Comparison of performance and blood parameters of replacement ewe-lambs at different levels of replacing cotton seed meal with slow-release urea
نویسندگان [English]
- Ali Reza salami 1
- shoheil mirhabibi 2
- mojtaba haghighat 1
- hamid reza khodaei 3
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
3 Assistant Professor, Department of animal science, Golpayegan Branch, Islamic Azad University, Golpayegan, Iran
چکیده [English]
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.
کلیدواژه‌ها [English]
- Blood parameters
- cotton seed meal
- Ewe-lambs
- Functional traits
- Slow-release urea
- 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.
)