Bovine Myology A Colour Atlas Bovine Myology A Colour Atlas, 2024
Histometrical changes in the thyroid gland of chabro chicken reared during summer and winter seasons Amit Singh Vishen, Varsha Gupta, S.P. Singh, Abhinov Verma, Rakesh Kumar Gupta, Hemant Kumar, K.N. Singh, Mukesh Kumar Indian Journal of Animal Research, 2021 Background: Chabro is a strain of poultry birds especially designed for backyard farming and is more adoptive to climatic variations in the tropics. The thyroid gland plays an important role in controlling basal metabolic rate. The histoarchitectural changes of the gland in association with seasonal changes has not been studied so far in Chabro. The present study describes the season related variations in the histometry of thyroid gland.Methods: Micrometrical studies were conducted on thyroid gland of eight to ten weeks old 24 apparently healthy Chabro chickens procured from Poultry Farm, DUVASU, Mathura after approval of CPCSEA. For this study the chickens were divided into two groups consist of 12 chickens in each group reared in summer and winter seasons.Result: Histologically, the thyroid gland was composed of stroma and parenchyma. The capsule had outer thick adipose and inner thin fibrous layers. The follicles were filled with colloid produced by the follicular cells. The percentage of small follicles was more followed by medium and large follicles. The follicles were lined by simple squamous epithelium in summer and cuboidal epithelial cells in winter. All micrometrical parameters, amount of reticular fibers, percentage of large and active follicles were higher in winter.
The histochemical study of the thyroid gland of chabro chicken reared in summer and winter seasons Amit Singh Vishen, Varsha Gupta, S.P. Singh, Abhinov Verma, Renu Yadav, Rakesh Kumar Gupta, K.N. Singh, Mukesh Kumar, Anand Singh Indian Journal of Animal Research, 2021 Background: Chabro is a strain of poultry birds especially designed for backyard farming and is more adoptive to climatic variations in the tropics. The thyroid gland plays an important role in controlling basal metabolic rate. Histochemical changes of the gland in association with seasonal changes have not been studied so far in Chabro chicken. The present study describes the season related variations in the histochemistry of thyroid gland. Methods: The histochemical study was conducted on thyroid gland of eight to ten weeks old 24 apparently healthy Chabro chickens procured from Poultry Farm, DUVASU, Mathura. The birds were divided into two groups consisting of 12 chickens in each group reared in summer and winter seasons. Result: The capsule showed mild reaction for PAS, protein and glycogen. Follicular cells showed intense reaction for bound lipids, protein and alkaline phosphatase. The colloid in summer season showed strong reaction for PAS at periphery and very strong reaction at center while in winter colloid showed strong PAS positive activity. The Chabro chicken thyroid was functionally more active in winter as compared to summer season because of increased diameter of all follicles and concentration of thyroid hormones level in winter season.
Topographical and biometrical anatomy of duodenum in prenatal goats Abhinov Verma, M.M. Farooqui, Ajay Prakash, Archana Pathak, S.P. Singh, Varsha Gupta, Prabhakar Kumar Indian Journal of Small Ruminants, 2020 To record the morphogenesis of different segments of duodenum, a study was conducted on the duodenum of formalin fixed 36 non-descript goat embryos/foeti. Embryos/foeti were equally divided into 3 groups as Gr-I (early prenatal period), aged between 23 to 50 days of gestation, Gr-II (mid prenatal period) between 51 to 100 days of gestation and Gr-III (late prenatal period) between 101 days to till kidding. The morphological observations were recorded after performing dissection through ventral abdominal wall. The duodenum was first time demarcated from other segments of small intestine at 43 days of gestation. At 45 days of gestation, the duodenum was devisable into three segments (cranial, descending and ascending). A constriction was observed first time between pyloric part of stomach and duodenum at 51 days of gestation. A distinct āSā shaped curve (ansa sigmoidea) was observed at 51 days of gestation. A fold of peritoneum between descending and ascending part of duodenum was discernible at 92 days of gestation and related with ventral surface of right kidney at 97 days of gestation. The luminal surface of duodenum showed presence of villi at 75 days of gestation and longitudinal folds at 150 days of gestation. The mean length and diameter of the different segments of duodenum were significantly correlated with age of foeti.
Gestational variations in the macro anatomy of the fore stomach of goat (Capra hircus) V. Gupta, M. M. Farooqui, Ajay Prakash, Archana ., Abhinov Verma Indian Journal of Animal Research, 2018 A study was undertaken to appraise the macro anatomical development of fore stomach of foetal goat. For this study 36 foeti/ embryos were divided into three groups viz. Group I (0-50 days of gestation), II (51-100 days of gestation) and III (101 days of gestation to till term) having 12 foeti in each group. All the four compartments of the goat stomach were clearly discernible by 38 days of gestation. Under stereozoom microscope, by 34 days of gestation the digestive tube showed three dilatations and two constrictions. Quadrilateral rumen was placed on left side of the median plane between 8thrib to 1st lumbar vertebra at term. Except cranio- dorsal coronary groove all other ruminal grooves were discernible before birth. Large dorsal and small ventral sacs were noticed at 46 days of gestation. Fine ruminal papillae were noticed from 90 days onwards. The reticulum became cranial most compartment of stomach after 50 days. Pear-shaped reticulum was placed on left side of the abdominal cavity in group I and pushed to just left of the median plane after 50 days of gestation. Near term (134 days), it was extended between 7th to 9th rib. Internally the reticulum showed honey comb-like folds at 107 days of intra uterine life. Originally the circular omasum was placed on the left of median plane and from 55 days onwards gradually shifted to the right side. During gestation, a cranial ascent of the omasum was noticed with its placement between 9th -11th ribs at term. Under stereozoom microscope, leaf-like omasal lamina was observed from 38 days of gestation. Primary, secondary, tertiary and quarterly laminae were observed on 38, 51, 55 and 87 days of gestation, respectively. Statistical analysis of the data revealed that biometrical parameters of fore stomach increased significantly with advancement of age and were highly significantly correlated with each other.
Morphological and cytological differentiation of goat spleen (Capra hircus) Varsha Gupta, M. M. Farooqui, Ajay Prakash, Archana ., Prabhakar Kumar Indian Journal of Animal Research, 2017 Development of goat spleen at various stages of gestation was studied. Primordium of spleen was observed on 46th day of gestation in close proximity to the developing rumen. All the parameters viz. length, width, thickness and weight were increased with advancement of age. Differentiating capsule and trabeculae were noticed on 69th day and 102th days of gestation, respectively. Reticular, collagen and elastic fibers were noticed at 60, 55 and 124 days of gestation, respectively. Red and white pulp was not fully differentiated till term.
Transmission electron microscopic studies on the granular leukocytes of guinea fowl (Numida meleagris) Indian Journal of Animal Sciences, 2008