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Subject: Animal Nutrition × End date: 2015 × Start date: 2015 × Type: Thesis × Thesis Type: M.V.Sc. ×
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    ThesisItemOpen Access
    EFFECT OF MALORI (Rumex hastatus) LEAF EXTRACT ON GROWTH PERFORMANCE OF COMMERCIAL BROILERS
    (CSKHPKV, Palampur, 2015-04-18) Soney, Priya; Rani, Daisy
    The ban on the use of antibiotic growth promoters had focused the research on the use of alternative growth promoters. It has been shown that Rumex hastatus (RH) had a great pharmacological and antioxidant potential. No work has been done to explore the effect of its extract on growth performance of broilers. Thus, this study was designed with the aim to supplement the methanolic extract of dried leaves of RH (MERH) @ 0, 73, 146 and 292 g/q of feed and designated as M0, M200, M400 and M800, respectively. A total of 192 (No.) day-old broiler chicks of Vencobb strain were divided into 4 groups, with 48 chicks in each group. Growth characteristics, digestibility of nutrients, dressing percentage; weight of abdominal fat, liver, gall bladder, kidney and lymphoid organs; chemical composition of breast and thigh muscles, plasma biochemicals and minerals, histopathology of liver, micrometry of ileum and economics of broiler production were studied. The overall feed intake of M200 group was significantly (P<0.05) lower than that of M400 group. The overall highest gain in weight (2123.41g) and the best feed conversion ratio was recorded in M400 group. The digestibility of dry matter and nitrogen free extract was significantly (P<0.05) higher in M400 group compared to that of M800 group. Total plasma cholesterol level in M400 group was significantly (P<0.05) lower than M200 and statistically equivalent to control and M800 group. The height of villi of ileum was significantly (P<0.05) the highest in M400 (586.41 μm) and significantly (P<0.05) the lowest in M800 (531.30 μm) group. The thigh muscles of M400 group broilers had higher contents of dry matter, fats, protein and minerals. M400 supplementation reduced the cost of feed per kg gain in weight by 1.21 per cent with respect to control. MERH did not have any effect on liver of healthy birds. It was concluded that M400 was the best supplementation level as it increased nutritional worth of meat and improved the economy of production.