1Goat Research Station, Assam Agricultural University, Byrnihat, Assam
2Livestock Research Station, Assam Agricultural University, Mandira, Assam
Department of Animal Nutrition, College of Veterinary Science, Assam Agricultural University, Khanapara, Guwahati-781022, India
*Corresponding author: mridusmita.sonowal@aau.ac.in
Online published on 30 September, 2023.
A total of 180 day, old Vencobb 400 strain broiler chicks were distributed randomly into 4 groups having 45 chicks with three replicates of 15 chicks in each. The experimental groups were supplemented with three different types of feed additives viz, T1 (Zinc Bacitracin @ 55mg/kg), T2 (Probiotic @150 mg/kg) and T3 (Clove oil @ 400 ppm) with T0 as control. The results of the experiment showed significantly (P<0.05) higher total weight gain (g) and better overall feed conversion ratio (FCR) in the groups T3 and T2 than the control and T1 group. Significantly (P<0.05) improved digestibility of dry matter, crude protein, ether extract and nitrogen retention was observed in the treatment groups. Abdominal fat percentage was lower (P<0.05) and prime cuts percentage was significantly (P<0.05) higher in the T3 and T2 groups than control. Protein percentage of meat was significantly (P<0.05) higher in the treatment groups, whereas fat percentage was lower in T3 and T2 groups as compared to control and T1. Broiler performance efficiency index was 80.57, 98.67, 102.53 and 115.48 for T0, T1, T2 and T3 groups, respectively. The cost of feeding per kg live weight gain was (Rs) 69.27, 62.59, 61.63 and 61.76 in T0, T1, T2 and T3 groups, respectively. The study revealed that the supplementation of multi-strain probiotic @ 150 mg and clove oil @ 400 ppm increased the profit for broiler production.
Antibiotics, Broiler chicken, Clove oil, Growth performance, Probiotic
