Growth of carcass components and its relation with conformation in pigs of three types.

摘要: The growth of carcass tissues and developmental changes in tissue distribution were studied three pig types which selected to have morphologies that could be described as attenuated, blocky flabby. These achieved by incorporating, respectively, Landrace, Pietrain Meishan genes give commercial 'types' (designated L, P M,) exhibiting some the phenotypic qualities these breeds. Twenty-five female pigs each type with an average start weight 27.2 kg fed ad libitum slaughtered over a (nominal) live range 35-115 kg. Relations quantified using logarithmic transformation data allometric model. Significant differences relative rates (the b coefficient or slope plot) not common, occurring 14% relationships examined, whereas 61% constant term (a intercept significant. Increase age was different between but relation slaughter (dressing percentage) had highest value, M lowest. Carcass dimensions showed that, body length, widest ham shoulder whole size deep (ventral-dorsal) wide belly, attributes shape would regarded undesirable meat trade. Relative weight, L only slightly longer (3 mm) than at heavy end markedly (29 P. conformation also evident pelvic limb muscles which, given lightest narrowest and, cases, heavier wider L. Pelvic volume length greatest least M. composition (at prepared side weight) characterized low fat high lean weights, bone ratio. Subcutaneous lowest P, indicating early maturing, carcasses most subcutaneous intermuscular fat, indicative maturing. There was, thus, no simple maturity characteristics composition. skin. light hindloin limb, shoulder, flank limb; foreloin. individual mirrored joint weights varying extent; cases match (relatively heavy/light) single tissue. data, indicated particular significance relatively mass results important quality commercially available differing conformation.