engleski

Effect of suplementation of phytogenic feed additives on performance parameters and meat quality of broiler chickens

The aim of the experiment was to study the effects of clove powder (Syzygium aromaticum L), extracts of agrimony (Agrimonia eupatoria L.) and lemon balm (Melissa officinalis L.) on broiler chicken performance, carcass and meat quality. Three treatment combinations were prepared: C - control group without any feed or water additive ; AC - feed supplemented with clove powder and drinking water supplemented with agrimony extract ; LC - feed supplemented with clove and drinking water supplemented with lemon balm extract. AC group chickens had significantly higher body weight (P < 0.05) compared to the control group within 14 days of fattening. On the 42(nd) day higher body weight, better feed conversion, higher carcass yield and higher breast and thigh weight were determined in broiler chickens from groups AC and LC. However, significant differences (P > 0.05) in selected parameters were not recorded in experimental groups AC and LC compared to control. Dry matter of thigh muscles derived from AC and LC broiler chickens were significantly higher (P < 0.05) compared to controls. In groups AC and LC lower total fat content was recorded in thigh muscles (P > 0.05) when compared with control and significantly higher (P < 0.05) proportion of total protein was found in AC group. In the sensory evaluation of meat experimental groups AC and LC were rated better, despite no significant differences (P > 0.05) in comparison with control group.

agrimony; clove; growth of broilers; lemon balm; meat quality

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