Abstract: A method for assessing the tenderness of meat from an animal, comprising the step of testing the animal for the presence or absence of a genetic marker selected from the group consisting of: (1) an allele of the gene encoding calpastatin (CAST) associated with peak-force variation or genetic variation located other than in the CAST gene which shows allelic association with the CAST allele; and (2) an allele of the gene encoding lysyl oxidase (LOX) associated with instron compression of the semitendinosis muscle or genetic variation located other than in the LOX gene which shows allelic association with the LOX allele.

Abstract: The present invention relates to a vaccine for the prevention of lactic acidosis in a vertebrate, said vaccine comprising at least one isolated microorganism, or fragment or fragments thereof, wherein said microorganism is capable of producing lactic acid within the gut of said vertebrate, and wherein said microorganism is selected from the group consisting of: Clostridium-like species, Prevotella-like species, Bacteroides-like species, Enterococcus-like species, Selenomonas species, non-dextran slime producing Streptococcus species and non-slime producing lactic acid bacterial isolates.

Abstract: Bovine respiratory disease (BRD) complex, shipping fever, or pneumomic pasteurellosis, is a multifactorial disease whereby a combination of viral infection, adverse environment and poor immune status may combine to predispose animals to bacterial infections. The exotoxin, or leukotoxin (Lkt), may contribute to pathogenesis by impairing the primary lung defenses and subsequent immune responses or by causing inflammations as a result of leukocyte lysis. The present invention provides a modified microorganism which produces an Lkt toxin, wherein said Lkt toxin is partially or fully inactivated. In a further embodiment of the present invention, there is provided a modified microorganism wherein an Lkt toxin operon including an Lkt structural gene and/or a post transational activator of the organism is partially or fully inactivated. The present applicants have found that a precursor of Lkt toxin has reduced toxic activity.

Abstract: The present invention is directed to a method of preventing the over-production of acid in an animal comprising administering to the animal a vaccine including an acid producing microorganism and/or antigenic fragment or fragments thereof effective to prevent the over-production of acid in the animal. The vaccine includes lactic acid producing microorganisms obtainable from the normal gut flora of an animal. In particular the vaccine includes Streptococcus bovis and/or Lactobacillus spp.