Postnatal histogenesis of the glandular stomach of broiler chickens of the Cobb500 cross against the background of the growth-stimulating effect of M-Feed

Studies of postnatal histogenesis of the glandular part of the stomach against the background of the growth-stimulating effect of M -Feed are relevant for an objective assessment of the health and viability of birds of industrial crosses. The article presents the results of a comparative morphological study of the histostructure of the glandular stomach of broiler chickens of the Cobb-500 cross against the background of the growthstimulating effect of M-Feed in postnatal ontogenesis. The work uses histological, morphometric and statistical methods of research with subsequent analysis of digital material. The object of the study was the glandular part of the stomach of broiler chickens of the Cobb-500 cross (n=100), the bird was purchased from JSC "Poultry Farm" Chamzinskaya" Republic of Mordovia. The control and experimental groups were formed according to the principle of analogues. The conditions of feeding and maintenance corresponded to the norms of the VNITIP for this cross. It was found that when administered daily in the diet, from 10 to 42 days of age, the M-Feed feed supplement stimulates the morphogenesis and histogenesis of the stomach. Postnatal histogenesis of the glandular part of the stomach against the background of the growthstimulating effect of M-Feed is characterized by an increase in the thickness of the organ wall, its membranes, adaptive transformations of organ-specific structures and secretory epithelium. Postnatal histogenesis of the glandular part of the stomach against the background of the growth-stimulating effect of M-Feed is characterized by an increase in the thickness of the organ wall by 14.4 %, its membranes: mucosa by 13.5 %, muscle by 20.7 % (p < 0.05).In the morphogenesis of the mucous membrane of the glandular part of the stomach of broiler chickens during the fattening period, against the background of the growth-stimulating effect of M-Feed, two stages are distinguished. The first stage (21 days) is characterized by the maximum relative increase in Brody of the main organ -specific structures. The second stage (28-35 days) – a stable high growth of the lamina proper, gastric pits, muscle plate, submucosal base and glandular lobes of the deep glands. Due to the two-stage age adjustment, the proportion of glandular structures in the stomach of birds in the experiment increases by 15 %(p < 0.05), which creates the basis for changing the secretory function of the organ.

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