+ Site Statistics
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The choice of sire line determines the quality of final products in pigs

, : The choice of sire line determines the quality of final products in pigs. Zuechtungskunde 68(6): 483-492

The quality of final products in pigs will here broader be defined as presently in Germany customary. Beside of economic criteria of fattening and carcass composition also meat quality criteria must be included, such as freedom of PSE, DFD and the Hampshire factor and in addition a minimal content of intramuscular fat to improve taste characteristics. Recently also ethical considerations such as the utilization of breeds with genetic defects have become important. Since all intensive breeding programmes use similar crossbred females between LR and LW dam lines the flexibility of final products and their specific adaptation to different markets must be brought in by sire lines with specific characteristics. Under West European conditions we have three specific sire breeds Pietrain (PI), Hampshire (HA) and Duroc (DU) and the crosses between them. PI has by far the highest lean content but is highly stress susceptible (MHS = PP), HA is stress resistant (MHS = NN) but shows in its progeny the so-called "Hampshire factor", which causes weight losses in cooked hams. DU is also stress resistant (NN) but fatter than the other two, but it has the highest intramuscular fat content. High quality requirements can only be met with homozygously stress resistant final products and these are produced in Holland, Scandinavia and Switzerland without stress susceptible PI-sires, which face increasing ethical criticism by the animal protection lobby. For reasons of international competition as well as ethical concerns German pig breeders must therefore quickly try to present homozygously stress resistant final products at the markets. The easiest way to do this under German grading conditions would be to breed a stress resistant PI--subpopulation using the MHC-genetest. This is in progress in many large breeding companies. In the meantime enough homo- and heterozygous Pl-boars are available at AI-stations to breed a homozygous NN-population of PI- via a broad NP-Fl-foundation. It is more difficult to increase the intramuscular fat content of final products because that can only be done with incorporating generally fatter breeds (e.g. DU) and would lead to decreased income due to poorer grading.

(PDF 0-2 workdays service)

Order PDF Full Text


Click here to order any other PDF Full Text

Accession: 002980305

PDF Full Text: Submit

Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:

Other references

Fleming, C.A., 1966: Notes on the distribution of New Zealand Cicadas. N: 16-17

Kashima, T.; Nakamura, K.; Kawaguchi, J.; Kudo, A.; Grigoriadis, A. E., 2002: A possible functional role of cadherins to prevent osteosarcoma metastasis. Journal of Bone & Mineral Research 17(Suppl 1): S408, September

Dutta, Cp; Ray, Lpk; Chatterjee, A., 1973: Constitution of flavokawain-C. Indian journal of chemistry: 11 (5) 509-510

Beshear R.J.; Jordan H.B., 1971: Tabanidae 20 new records from the okefenokee swamp area. Journal of the Georgia Entomological Society 6(2): 75-77

Plueckthun A., 1988: Assembly of a functional immunoglobulin f v fragment in escherichia coli. An expression system was developed that allows the production of a completely functional antigen-binding fragment of an antibody in Escherichia coli. The variable domains of the phosphorylcholine-binding antibody McPC603 were secreted together int...

Meiners, H. H., 1984: The load on individual tractor units during various agricultural tasks. Load curves are determined for individual tractor tasks (including ploughing, transport, harrowing) and are used to form total load curves on the basis of their proportion of time of the total service life of the tractor. Total load curves are giv...

Kawauchi, S.; Aida, K., 1977: Seasonal variation of species diversity and 'log normal law' in butterfly community in the middle reaches of the Kinu River. Kurume. Univ J: 262: 115-125

Phillips R.A., 1980: Maintenance and regulation of lymphoid progenitors in long term cultures of mouse bone marrow. Journal of Supramolecular Structure 9(SUPPL 4): 139

Sugerman H.J., 1984: Endoscopic dilation of late stomal stenosis its use following gastric surgery for morbid obesity. Cases (16) of stomal stenosis occurring late after gastric surgery for morbid obesity were observed. In 1 patient no stoma was apparent in the pouch on radiographic or endoscopic examination and reoperation was required for complete obstruction. S...

Bray G.A., 1983: Hyper insulinemia in rats with hypothalamic obesity effects of autonomic drugs and glucose. The effects of autonomic drugs and glucose on the insulin and glucose concentrations of sham-operated rats and of rats with ventromedial hypothalamic (VMH) lesions and obesity were examined. In the basal condition both epinephrine and atropine sig...