Injection of three types of hormones to stimulate growth in dwarf and normal animals

A. Taha, S.; M. Khazal, A.; A. Faris, R.; S. Shiko, L.

	Injection of three types of hormones to stimulate growth in dwarf and normal animals
Al-Anbar Journal of Veterinary Sciences
Article 1, Volume 6, Issue 1, 2013, Pages 56-63 PDF (208.75 K)
Authors
S. A. Taha; A. M. Khazal; R. A. Faris; L. S. Shiko
Abstract
An experiment was came out to study the effect of using three types of hormones (Growth-GH., Cortisol-CH. and estadiol-E2.) to stimulate growth in dwarf and normal lambs. A total of twenty four of Awassi male lambs at (7-9) months of age (12 dwarf and 12 normal) were used. Each group (12 lambs) were randomly assigned to one of eight treatment (three pens pretreatment, one lamb per pen). Eight treatment groups was (T1) control no injection with any type of hormone, (T2): injected (IM) with (1 ml) of GH. for three months period, (T3): injected (IM) with (2ml) weekly of E2 and (T4) injected (IM) with (2ml) every three days of CH. Which was imposed on dwarf lambs. (T5, T6, T7, T8) was the same administration but imposed on normal lambs. Lambs allowed to consumed ad libitum feed of concentrates and roughages and water for the entire of study. Body weight (BW.) and body size parameters were recorded bi weekly for (12 weeks period). feed intake and feed efficiency (kg feed: kg gain) were measured hormones concentrated were measured before and 6, 12 weeks of experiments. Administration of GH. Increased BW. of lambs on treatment (46.0 kg) compared with that of controls (25.3 kg) at the end of experiment after 12 weeks. furthermore the BW. of lambs of T3 and T4 was (35.33 kg) and (43.0 kg) at the end of experiment respectively. Whereas the BW. of T6 was increased significantly compared with that of T5 (53 vsuu kg) the length of body of dwarf lambs at the end of experiment in T1, T2, T3 and T4 was (60 cm), (77.76 cm), (76.33 cm) and (70.33 cm) respectively. Concentration of GH., CH. and E2 befor injection intramuscularly was (7.6, 9.417 and 0.133 ng/ml/plasma) in group of treatment 2, 3 and 4 respectively, whereas, these concentrates was (30.39, 42.09 and 1.233 ng/ ml/ plasma) in group of treatment 6, 7 and 8 respectively. The concentration of these hormones after 6 week of experiment was (0.900, 44.66 and 38.76 ng/ml/plasma) for treatment 2, 3 and 4 and 2.766, 69.313 and 41.41 ng/ml/plasma) for treatment 6, 7 and 8 respectively. However the concentration of these hormones were (0.600, 31.21 and 30.260 ng/ml) for treatment 2, 3 and 4 and (1.366, 42.183 and 48.863 ng/ml/plasma) for treatment 6, 7 and 8 respectively after 12 week of experiment.
Keywords
Injection of three types of hormones to stimulate growth; dwarf; normal animals

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