Evaluation of different litter materials on growth, feed conversion and carcass yield in broilers
S.K. AHMED, V.B. SHARMA AND V.K. VIDYARTHI
Department of Animal Production and Management, SASRD
NagalandUniversity, Medziphema Campus - 797106, Nagaland
Six different types of litter materials, viz. paddy husk (Group L 1, control), saw dust (Group L 2), lime treated used paddy husk (Group L 3), 50% paddy husk plus 50% saw dust (Group L 4), 50% paddy husk plus 50% lime treated used paddy husk (Group L 5) and 50% saw dust plus 50% lime treated used paddy husk (Group L 6) were tested in terms of their effects on growth, feed efficiency and carcass yield in broilers. For this, 900 day old Vencob strain of broiler chicks were randomly allotted into the six treatmental groups of 150 chicks in each on the basis of body weight (mean weight, 38.47 g). The birds of all the six groups were reared under hover type of brooder in strict hygienic condition with a floor spacing of one square feet/bird. They were offered a standard diet, i.e. starter mash from zero to 21 days of age and pellet diet from 22 days onwards till 42 days. The average body weight at 6 th week of age was 1716, 1680, 1686, 1568, 1486 and 1571 g / bird under groups L 1 to L 6, respectively. The body weight was significantly (P < 0.05) highest in-group L 1 followed by L 3, L 2, L 6, L 4 and the least in group L 5; however, there was non-significant variation between groups L 1, L 2 and L 3; and between groups L 4 and L 6. The average gain in weight of broiler birds was 279.6, 273.5, 274.6, 254.9, 241.2 and 255.5 g / week in the groups from L 1 to L 6, respectively; however, the values were non-significant with each other. The total feed intake upto 6 th weeks of age was 3694, 3733, 3715, 3708, 3725 and 3715 g / bird in the groups L 1 to L 6, respectively. Feed consumption did not vary significantly amongst them. The efficiency of feed conversion was 2.15, 2.22, 2.20, 2.36, 2.51 and 2.36 g feed / g body weight of broiler bird in the groups L 1 to L 6, respectively; however, they were not different statistically. The average dressed yield was 82.22, 79.14, 80.39, 79.00, 77.94 and 79.10 percent in the birds of groups L 1 to L 6, respectively. The overall mortality recorded was 0.66, 1.33, 1.33, 1.33, 2.67 and 1.33 percent, respectively.