| Popis: |
The Physical carcass characteristics of 100 indigenous Nigerian pigs (IND.) (50 gilts and 50 barrows), and 100 Large White x Landrace pigs with a similar sex ratio were compared. These were slaughtered at either one of five weights, 22.7, 34.0, 45.5, 56.8 or 68 kg live-weight, in such a way that 10 gilts and 10 barrows of each breed were slaughtered at each of the predetermined slaughter weights. For the purpose of comparing sexual influences on physical carcass traits in the indigenous pigs carcass data were obtained on an additional group of 50 indigenous boars during the same period as the above at similar slaughter weights involving similar numbers per slaughter weight. In a third experiment carcass data were collected on 40 pure Large White pigs (LW) (20 gilts and 20 barrows) and 40 indigenous x Large White pigs (IND.XLW) also made up of 20 gilts and 20 barrows. A comparison was made between these and the data on a similar number of indigenous barrows and gilts. The results indicated highly significantly different (P |
