Immunization against GnRF in adult cattle: a prospective field study
نویسندگان
چکیده
منابع مشابه
Immunization against GnRF in adult cattle: a prospective field study
BACKGROUND Suppression of cyclic activity in cattle is often desired in alpine farming and for feedlot cattle, not intended for breeding. A cattle specific anti-GnRF vaccine (Bopriva™) is registered for use in heifers and bulls in different countries. In adult cows vaccinated with Bopriva™, the median period until recurrence of class III follicles was 78 days from the day of the 2nd vaccination...
متن کاملThe effect of immunization against GnRF on nutrient requirements of male pigs: a review.
In most countries, male pigs are physically castrated soon after birth to reduce the risk of boar taint and to avoid behaviours such as fighting and mounting. However, entire male pigs are more feed efficient and deposit less fat than barrows. In addition, many animal welfare organizations are lobbying for a cessation of castration, with a likelihood that this could lead to inferior pork unless...
متن کاملImmunization of pigs against gonadotrophinreleasing factor (GnRF) prevents boar taint andaffects boar growth and behaviour
Peri– and post–pubertal boars accumulate substances in their fatty tissue, predominantly androstenone and skatole, that are responsible for boar taint in pork. One method of inhibiting sexual development, reducing plasma gonadotrophin and testosterone and reducing the accumulation of these substances in carcass fat, is immunization against gonadotrophin releasing factor (GnRF). Recently, a vacc...
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Rinderpest is caused by a morbillivirus closely related to the measles and canine distemper viruses. The pathology and symptomatology of the three diseases are very similar,1 but in terms of mortality, rinderpest is by far the most lethal; in European cattle the death rate often exceeds 80 per cent. The disease was eradicated in Europe over a hundred years ago, but in the eighteenth century an ...
متن کاملImmunization of cattle against Hyalomma anatolicum anatolicum using larval antigens.
Development of immunity in cross-bred (Bos taurus x Bos indicus) calves against Hyalomma anatolicum anatolicum, vector of bovine tropical theileriosis, was studied using larval antigen (LS) in Freund's complete adjuvant (FCA). Calves immunized with LS + FCA showed significant rejection of larvae (57.25 +/- 6.8) and nymphs (45.75 +/- 5.16). Abnormally fed larvae (11.4 +/- 0.8) and nymphs (8.25 +...
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ژورنال
عنوان ژورنال: BMC Veterinary Research
سال: 2017
ISSN: 1746-6148
DOI: 10.1186/s12917-017-1129-x