Effect of Different Floor Space Allowances on Carcass Characteristics of Crossbred(Landrace×Desi)Barrows

摘要

An attempt was made to study the carcass traits of crossbred (Landrace×Desi)barrows (n =36)reared on 3 different floor space allowances (n = 12 each).T1 (control)group provided floor space as per Indian Standards (IS: 3916-1966)specification,while T2and T3Treatment groups with 33％ and 50％ reduced floor space allocation per pig in comparison to IS.During weaner (6-14 weeks),grower (15-22 weeks)and finisher (23-29 weeks)stages,3 different floor spaces {T1 group (0.9,1.35 and l.8 m2/pig),T2 group (0.6.0.9 and l.2 m2/pig)and T3 group (0.45,0.68 and 0.9 m2/pig)} were provided.The average initial body weight of harrows were 8.67+0.26,9.01+0.33,9.13+0.36 kg while final body weight were 81.20 ±2.57,82.38±3.46,81.13±2.77 kg for T1,T2 and T3 groups,respectively.Six animals from each group were slaughtered as per the standard procedure.None of the major economic carcass traits { carcass weight,dressing ％,back fat thickness (BFT),loin eye area (LEA),％ lean etc} was affected with reduction of floor space allowances.The dressing ％ ranged between 73.79 t0 74.6.The mean ％ lean value for T1,T2 and T3 groups were 53.83 +0.69,52.57 + 2.36 and 53.93 + 1.23,respectively.There was no difference in major cut-up parts as well as share of edible and inedible offal among treatment groups.Proximate composition of pork (moisture,CP and EE)also did not differ among groups.As lowest of the allocated floor space (T3 group)in present experiment was higher than recommended optimum floor space for pigs in Western and neighboring countries.there is scope of floor space reduction for pig rearing in India.Hence.results conclude that floor space restriction did not have any adverse effect on carcass traits.