Biometrical Studies on the Oviduct and uterus of Slaughtered Balady Does During Estrous Cycle and Seasons in Sub Tropic
Mervat Sayed Hassan,
Ahmed Mamdouh Osman,
Hassan Abd El-Sabour Hussein
Issue:
Volume 9, Issue 1, March 2023
Pages:
1-8
Received:
20 February 2023
Accepted:
14 March 2023
Published:
24 March 2023
Abstract: The present work was aimed to study the biometrical measurements of the reproductive tract of slaughtered Balady does in relation to various reproductive conditions and seasons to establish the baseline for the size of each segments. Methods: 127 normal pair ovaries were taken for this purpose in Assiut province and classified according to phases of estrus cycle (Proestrous 39, Estrus 12, Metestrus 23 and Diestrus 53) and as well according to seasons (Autumn 36, Winter 40, Spring 26 and Summer 25). The oviduct total length was measured from the top of the fimbria to the tubal uterine horn junction. The lengths if its ampulla and isthmus were measured. Each oviduct weighed separately. The lengths and diameters of greater and lesser curvature of each uterine horn were then taken. The length and diameter of the attached portion of both horns was taken and the number of the protruded caruncles counted. The length of the uterine body as well as the length and diameter of the cervix were recorded. All these measurements were taken with a flexible metric tape. Results: Among different phases of estrous cycle, the estrus have the highest value for oviduct parameters and the lowest values were presented in metestrus (p<0.05). The autumn has the largest values for all of the measurements, with a significant difference between summer. The uterine horns showed highest values were recorded during diestrus. Significant differences were found in the diameters of uterine horn between seasons and the highest values were in winter followed by autumn then spring and summer (P<0.05-0.01). Moreover, the diameter of uterine body was highly significant during autumn. For all measured criteria, the summer has the lowest values. Significant correlation (P<0.05) was present between uterine weight and oviduct weight. The highest values recorded for length, diameter and weight were significantly noticed during estrus and diestrus (P<0.05-0.01). The lowest values were found during metestrus. Among seasons, significant differences in cervical diameters and weight at levels of P<0.05-0.001 were found. The autumn has the maximum values in comparison to other seasons. The summer has the lowest values. Conclusion: The genitalia of slaughtered Balady goats that the typical breeding seasons are absent in Balady goat, but during autumn there is marked tendency for better improvement in the biometry of the reproductive genitalia with an expected higher fertility.
Abstract: The present work was aimed to study the biometrical measurements of the reproductive tract of slaughtered Balady does in relation to various reproductive conditions and seasons to establish the baseline for the size of each segments. Methods: 127 normal pair ovaries were taken for this purpose in Assiut province and classified according to phases o...
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Effect of Queen Excluder Placing on Honey Yield and Honeybee Colony Performance in Selected Beekeeping Areas of East Shewa and West Arsi Zones of Oromia
Issue:
Volume 9, Issue 1, March 2023
Pages:
9-13
Received:
12 June 2023
Accepted:
5 July 2023
Published:
13 July 2023
Abstract: Honeybees in tropics are characterized by a strong propensity towards continuous brood rearing rather than storing honey. Such behavior lowers productivity and profitability of tropical bees. The possibility of maintaining a balance in resource allocation between brood rearing and honey storage is vital to assess. Study was conducted from July, 2020 through June, 2022 to examine the effect of insertingqueen excluder on honeybee population expansion and honey productivity in three adminstrative districts that are typefyied by different agroecologies. A total of 30 honeybee colonies (eight is fitted with honeybee queen excluder at each study district totaling to 24 and 6 (six) left without queen excluder) were randomly assigned to treatments. Before an expected honey harvest season, the treatment honeybee colonies were assigned to four different honeybee queen excluder fitting r time intervals viz. 1st week, 2nd week, third week and fourth week of the honey flow month. Data on number of honey comb area, brood comb area, pollen comb area and worker comb area were collected during flowering seasons over a two-year period. The total brood comb area was not differ significantly between the treatments. However, three weeks before honey harvest time,, there was a highly significant difference in the total brood population between the treatment and control groups. Honeybee colonies without queen excluders continued to rear brood, even during peak honey flow periods. The partial limiting of queen egg laying using queen excluders significantly reduced the total brood comb area compared to the control group at peak honey flow. The weekly total honey comb area was significantly different between the control and treatment groups. The honeybee colonies for which queen excluders were installed between the second and third weeks of the honey flow season had showed the highest number of honey comb areas. Installing queen excluders before the second or third weeks of the start of the honey flow is more practicable and economical.
Abstract: Honeybees in tropics are characterized by a strong propensity towards continuous brood rearing rather than storing honey. Such behavior lowers productivity and profitability of tropical bees. The possibility of maintaining a balance in resource allocation between brood rearing and honey storage is vital to assess. Study was conducted from July, 202...
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