Effect of boldenone undecylenate injection and dietary protein level on fattening performance, nutrient digestibility and carcass characteristics of RomanovMoghani crossbred lambs

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Teimourpour Choghongonash S.; ABDI BENEMAR H.; FATHI ACHACHLOUEI B.; SEIFDAVATI J.; MASOOMI R.

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Journal: ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ) Year:2019 | Volume:28 | Issue:4 Page(s): 127-140

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Title

Effect of boldenone undecylenate injection and dietary protein level on fattening performance, nutrient digestibility and carcass characteristics of RomanovMoghani crossbred lambs

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Keywords

Blood parametersQ1

Boldenone undecylenateQ1

Carcass characteristicsQ2

Fattening performanceQ2

Romanov-Moghani crossbredQ2

Abstract

Introduction: Boldenone undecylenate is an anabolic steroid that stimulates protein production. Boldenone injection can increase muscle size in lambs and reduce their nutritional needs andincrease feed intake. Anabolic steroids increase protein synthesis in the muscles of tissues; furthermore, high levels of diet protein can increase the amino acid for the tissues and furthersynthesize the protein by the androgens. The aim of this study was to investigate the Fattening performance, nutrient digestibility, and Carcass characteristics of Romanov-Moghani crossbredlambs influenced by Boldenone undecylenate injection and level of dietary protein. Material and methods: Twenty male lambs were used in a randomized completely design withfactorial arrangement (2×2) of the treatments. The main experimental effects were effect of Boldenone undecylenate (no injection or injection of 5 mg/kg BW of boldenone) and effect of dietprotein level (12 or 16 percent per DM of the diet). The experiment was continued for 75 days. Lambs were classified according to body weight and diets were fed to lambs twice a day at 9 a. m. and 17 p. m. In order to evaluate the performance, lambs were weighed every two weeks and dailyweight gain was calculated by the subtraction. Feed intake was determined from the differencebetween the offered feed and the refusal. At the end of the experiment, all lambs were slaughteredand their Carcass characteristics were measured. Blood sampling were taken monthly (two times)from jugular vein in two stages from all lambs three hours after morning meal and blood plasmawas separated by centrifuging (3500 rpm for 10 min) and kept at-20 ° C till the analysis. Results and discussion: Results showed that total average daily gain changed significantly byBoldenone undecylenate injection (P<0. 05). Feed conversion ratio for total period and average totalweight gain were not affected by increased dietary protein level. Total average daily gain andweight at the end of fattening period were not changed significantly by the dietary protein. Total drymatter intake (DMI) in Romanov-Moghani lambs was not affected by boldenone injection andlevels of dietary protein. The Carcass characteristics of lambs were not significantly affected byhormonal injection or dietary protein levels. The results showed that the effects of hormonalinjection and dietary protein change were not significant on nutrients digestibility, except for crudeprotein digestibility (P<0. 01). Blood urea nitrogen concentration was influenced by hormonal injections during the first month (hormone injection period) and injection of hormone caused asignificant decrease in blood urea nitrogen (P<0. 05). Blood protein concentration increased significantly at the end of the first month (hormone injection period), (P<0. 05). The serum protein level was affected by the interaction of hormone with protein (P<0. 05). Diet protein has asignificant effect on blood glucose concentration (P<0. 05). Triglyceride and was significantlyaltered with hormonal injections in the first month (hormone injection period), (P<0. 05). Conclusion: Based on the results, Administration of Boldenone undecylenate and the use of different level of dietary protein changes the protein base metabolism in the crossbred lambs and more energy is used to synthesize and storage protein in tissues.

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APA: Copy

Teimourpour Choghongonash, S., ABDI BENEMAR, H., FATHI ACHACHLOUEI, B., SEIFDAVATI, J., & MASOOMI, R.. (2019). Effect of boldenone undecylenate injection and dietary protein level on fattening performance, nutrient digestibility and carcass characteristics of RomanovMoghani crossbred lambs. ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ), 28(4 ), 127-140. SID. https://sid.ir/paper/370057/en

Vancouver: Copy

Teimourpour Choghongonash S., ABDI BENEMAR H., FATHI ACHACHLOUEI B., SEIFDAVATI J., MASOOMI R.. Effect of boldenone undecylenate injection and dietary protein level on fattening performance, nutrient digestibility and carcass characteristics of RomanovMoghani crossbred lambs. ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ)[Internet]. 2019;28(4 ):127-140. Available from: https://sid.ir/paper/370057/en

IEEE: Copy

S. Teimourpour Choghongonash, H. ABDI BENEMAR, B. FATHI ACHACHLOUEI, J. SEIFDAVATI, and R. MASOOMI, “Effect of boldenone undecylenate injection and dietary protein level on fattening performance, nutrient digestibility and carcass characteristics of RomanovMoghani crossbred lambs,” ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ), vol. 28, no. 4 , pp. 127–140, 2019, [Online]. Available: https://sid.ir/paper/370057/en

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