The beef production efficiency of milk cattle used crossed with different intensive beef cattle breeds

• Published in: Biotechnology in animal husbandry Vol. 25; no. 5-6-1; pp. 293 - 300
• Main Authors: Jukna, V., Jukna, C., Peciulaitienė, N.
• Format: Journal Article
• Language: English
• Published: 2009
• ISSN: 1450-9156; 2217-7140
• DOI: 10.2298/BAH0906293J

The cross efficiency of Lithuanian Black-and-White with intensive (Charolais, Limousin) and semi-intensive (Hereford, Angus) beef cattle bulls was analyzed. It was established that the weight at the age of 500 days of Charolais crossbred offspring were by 9.0 %, Limousin by 3.9 % (P<0,05), Hereford by 1.6 % higher, whereas Angus by 2.2 % lower than Lithuanian Blackand- White. The crosses with intensive breeds used by 6.6-6.2 % feed energy for 1 kg overweight and semi-intensive by 4.7-4.8 % less and theirs carcass yield was by 5.1-3.3 % (P<0.01-<0.05) and semi-intensive - by 2.2-1.8 % higher compared to purebred dams. The carcass of crossbred cattle was superior in point of muscularity class. Differences in meat chemical composition between crossbreeds and purebreds were insignificant. The crossbreeds had significantly superior pH of meat (P<0.05). Crosses, except Angus, had major water binding capacity and shear force of meat. Other meat quality traits of purebreds Lithuanian Black-and-White and theirs crossbreeds with analysed beef cattle breeds differed fractionally. It has been concluded that it is beneficial to cross Lithuanian Black-and-White with beef breed bulls. Efficiency of crossing with semi-intensive breed bulls was inconsiderable. Analizirana je efikasnost ukrstanja litvanske crno-bele rase sa bikovima intenzivnih (sarole i limuzin) i polu-intenzivnih (hereford, angus) tovnih rasa Utvrdjeno je da su u uzrastu od 500 dana, potomci sarole bikova imali za 9.0 % vecu telesnu masu, potomci limuzin bikova za 3.9 % (P<0,05), i hereforda za 1.6 %, dok su potomci angus bikova imali za 2.2% manju telesnu masu u odnosu na litvansku crno-belu rasu. Melezi sa intenzivnim tovnim rasama su za 1 kg porasta koristili za 6.6-6.2 % manje hrane, a sa polu-intenzivnim za 4.7-4.8 % i njihov randman je bio za 5.1-3.3 % (P<0.01-<0.05) veci u odnosu na majcinsku rasu, odnosno kod meleza sa polu-intenzivnim rasama za 2.2 -1.8 % veci u odnosu na majcinsku rasu. Trupovi meleza su bili superiorniji sa stanovista muskuloznosti. Razlike u hemijskom sastavu mesa izmedju meleza i ciste rase nisu bile znacajne. Melezi su imali signifikantno vecu pH vrednost mesa (P<0.05). Melezi, osim sa angusom, su imali bolju sposobnost vezivanja vode i shear force of meat. Ostale osobine kvaliteta mesa litvanske crno-bele rase i meleza sa ispitivanim tovnim rasama su se delimicno razlikovale. Zakljuceno je da je opravdano ukrstanje sa tovnim rasama. Efikasnost ukrstanja sa polu-intenzivnim rasama bikova nije bila znacajna.