Вплив маси надниркових залоз на формування основних господарсько-корисних ознак свиней

Abstract

Вивчали вплив маси надниркових залоз на відтворні, відгодівельні якості свиней різних генотипів та вартість реалізованої продукції. Встановлено, що збільшення маси надниркових залоз приводить до збільшення маси підшлункової та щитовидної залоз, не впливає на багатоплідність свиноматок і великоплідність поросят при існуючій тенденції до зниження молочності, маси гнізда і маси 1 голови в 2 місяці, сприяє підвищенню середньодобового приросту свиней на відгодівлі та зниження термінів досягнення маси 100 кг, приводить до збільшення вартості реалізованої продукції.

It has been established that the glands of internal secretion, including the adrenal glands, play a significant role in the formation of the meat production of pigs. The adrenal glands are a paired organ located in the fatty capsule of the kidneys and consists of a cortical and medullary layers performing various physiological functions. The mass of the adrenal glands of purebred pigs of Large White breed, grown on farms with different levels of technological support, are practically the same and is in the range 3.85 ... 3.87 g. Pureland landraces surpassed the peer group of a Large White breed by the mass of the adrenal glands by 0.1 g (2.6%, P> 0.95), the crosses obtained from industrial crossing by 0.18 g (4.7%, P> 0.999) , and hybrid animals - by 0.33 g (8.7%, P> 0.999). With an increase in adrenal mass (from point of view of the gradations established in the study), the mass of the pancreas and thyroid gland also increases. The difference in mass of the pancreas between the extreme classes of gradations was 10.1 g (10.3%, P> 0.99), by mass of the thyroid - 0.95 g or 16.7% at P> 0.999. An increase in the mass of the adrenal glands does not affect the multiplicity of sows and large-fruited piglets, but there is a tendency to reduce the milkness, nest mass and unit of livestock mass at the age of 2 months. With an increase in the mass of the adrenal glands, milk is reduced by 8.6 kg (14.5%, P> 0.95), the mass of the nest at the age of 2 months - by 34.9 kg (17.8%, P> 0.99), the unit of livestock mass at the age of 2 months - by 0.8 kg (4.2%, P> 0.999). According to precocity, the differences between the extreme gradations of adrenal mass are 5.5 days (2.8%), 52.5 g (8.0%) by average daily gain, but they are not reliable. A certain regularity in the influence of adrenal mass on feed costs per 1 kg of body mass gain has not been established. An increase in the mass of the adrenal glands contributed to an increase in the total income for the implementation of pork - with increasing their mass, the cost of sold products also increases - between the extreme values of the gradation of adrenal mass the difference was 40.44 UAH. or 3.1%.