Tag Archives: Dihydrostreptomycin

Diseases Of The Middle And Inner Ear

Normal Anatomy and Physiology The middle ear consists of the tympanic membrane, three cavities (epitympanic, tympanic, and ventral), and the bony ossicles (malleus, incus, and stapes). The tympanic membrane has two parts: (1) the thin pars tensa that attaches to the manubrium of the malleus and (2), above the pars tensa, the thicker, pars flaccida.… Read More »

Drugs used in the treatment of Mastitis

Mastitis is of economic importance in dairy cows because it causes decreased milk quality and reduced milk yield, which often leads to early culling. Peracute mastitis often results in death. Other species affected include sheep, pigs, dogs, cats, goats, and horses; male animals may also be affected. Treatment of mastitis in sheep and goats is… Read More »

Preparations for non-lactating animals

Non-lactating or dry cow therapy is administered to eliminate any subclinical infection present at the end of lactation and to prevent the establishment of new infections, including summer mastitis, during the dry period. Management plays a major part in the control of mastitis during the dry period and animals should be examined frequently, preferably twice… Read More »

Intramammary preparations for lactating animals

These preparations are used to treat clinical and subclinical mastitis (see notes above). Bacterial culture and sensitivity testing should be carried out on pretreatment milk samples on a regular basis so that mastitic pathogens within a herd are identified and the most suitable therapy is administered. Pretreatment samples should be refrigerated or frozen. Veterinarians should… Read More »


This group includes streptomycin, dihydrostreptomycin, neomycin, framycetin, gentamicin, paromomycin, amikacin, tobramycin, and apramycin. All are bactericidal and active against Gram-negative organisms and some Gram-positive organisms, but not streptococci. Amikacin, gentamicin, and tobramycin are active against Pseudomonas aeruginosa. Aminoglycosides are taken up into bacteria by an oxygen-dependent process and are therefore inactive against anaerobic bacteria. They… Read More »

Compound antibacterial preparations

Compound antibacterial preparations Although in principle the use of antibacterial mixtures is not recommended, in some cases two antibacterials may be used in combination for their activity against two specific and co-existing infections, for example, a mixture of a macrolide and a sulphonamide for enteric or respiratory disease in pigs. The main components of combination… Read More »