摘要:
A system for the controlled release of one or more physiologically or pharmacologically active substances, comprising compositions in the form of micro particles or granules, particularly for use in the zootechnical and/or veterinary field. The micro particles include a core which contains one or more substances having a pharmacological action, food supplements or diagnostic media, said one or more substances being characterized by the presence, within their chemical structure, of a basic functional group, specifically including an amine functional group. The core comprises also one or more carboxylic acids and/or their salts and eventually one or more excipients. Said core is coated by an outer layer of fats or waxes, and preferably by a mixture of glyceride of fatty acids.
摘要:
A bolus for administration of a substance to an animal, the bolus including An external coating, and A core inside the external coating wherein the core is formed from a plurality of dosage media, wherein each dosage media contains a substance, the bolus characterised in that the dosage media are ordered within the bolus such that the amount of substance released by each dosage media is progressively more than the amount of substance released by the previous dosage media.
摘要:
The present invention provides an anthelmintic composition including an avermectin or milbemycin, together with triclabendazole, and a predetermined quantity of rheology modifier, such as Laponite or xanthan gum, sufficient to render the anthelmintic composition suitable as an oral drench.
摘要:
A delivery device for altering the composition of animal waste, characterised in that the delivery device is adapted to deliver to an animal one or more treatment substances that can directly or indirectly affect the conversion of nitrogen containing compounds in animal waste, once the waste is excreted from the animal.
摘要:
The invention described is a bolus for the controlled release of a beneficial agent in the rumen of a ruminant animal. The bolus consists in a core containing a binder, solubilising agent, the beneficial agent to be released and, when required, a densifier. The core is coated with a wax coating, preferably with an opening exposing a small part of the core to rumen juices. The core is gradually dissolved releasing the beneficial agent. As the core dissolves the wax coating erodes until the bolus disappears completely.
摘要:
The present invention relates to a delivery mechanism for the introduction of a biological agent to an animal characterised in that the delivery mechanism is a bolus which contains the biological agent. In preferred embodiments of the present invention the biological agent is Duddingtonia flagrans and the animal to which the mechanism is introduced is a sheep.
摘要:
An alloy for use in the manufacture of boli for adminstration to ruminant animals, the alloy including a major proportion of magnesium, aluminium in an amount of less than 8 % by weight and copper to enhance the rate of the galvanic corrosion of the alloy, the copper being present in an amount of more than 0.5 % by weight. Example boli include a bolus comprising a tubular sheath made from the alloy which surrounds a core component, the sheath and core being galvanically coupled. Boli including the alloy of the present invention provide relatively high magnesium release rates as well as providing an overall higher proportion of available magnesium for assimilation by the animal.
摘要:
A sustained release capsule adapted to be inserted into the rumen of a ruminant animal and means for retention of the capsule in the rumen. A sustained release capsule ( 8 ) adapted to be inserted into the rumen of a ruminant animal through its oesophagus and retained within the rumen over a prolonged period to continuously deliver a biologically active composition ( 32 ) carried in the capsule ( 8 ), comprising an elongated tubular body ( 10 ) comprising a tube ( 16 ) and an end cap ( 12 ) secured to one end thereof for substantially enclosing the biologically active composition ( 32 ), the other end of the capsule ( 8 ) being a delivery end ( 18 ), the body ( 10 ) having an opening ( 20 ) at the delivery end ( 18 ) of the capsule ( 8 ) for delivery of the composition ( 32 ) to the rumen, and a plurality of retention arms ( 44 ) attached to or formed integrally with the cap ( 12 ), the arms ( 44 ) being adapted to extend outwardly from the cap ( 12 ) for retaining the capsule ( 8 ) in the rumen, the arms ( 44 ) being resilient to enable them to bend from their outwardly extending positions toward the body ( 10 ) so that they lie alongside the body ( 10 ) allowing the capsule ( 8 ) to be inserted through the animal's oesophagus, the resilient arms ( 44 ) normally extending from the body ( 10 ) at an angle between 75° and 90° with respect to the axis of the tubular body ( 10 ), and for each arm ( 44 ) said cap ( 12 ) has an external curved surface ( 26 ) disposed with respect to the arm ( 44 ) so that when the arm ( 44 ) is bent toward the body ( 10 ), the arm ( 44 ) contacts the curved surface ( 26 ) and the curved surface ( 26 ) controls the bending of the arm ( 44 ) so that the arm ( 44 ) does not bend abruptly, said arms ( 44 ) being adapted to return to their outwardly extending positions when the capsule ( 8 ) reaches the rumen, characterised in that said cap ( 12 ) is secured to said one end by means of at least two circumferential beads ( 30 ) having at least one sealing ring ( 31 ) located therebetween.