In vitro Fertilisation Capacity of Frozen Crossbred Bull Semen Cryopreserved During Different Seasons in Kerala

2021 ◽  
Author(s):  
M.M. Revathy ◽  
R.S. Abhilash ◽  
C. Jayakumar ◽  
P.K. Magnus ◽  
K. Raji ◽  
...  
Keyword(s):  
Rainy Season ◽  
Monsoon Season ◽  
Summer Season ◽  
Maximum Temperature ◽  
In Vitro Fertilisation ◽  
Post Monsoon ◽  
Bull Semen ◽  
Post Monsoon Season ◽  
Different Seasons

Background: Assessment of semen quality of bulls in frozen semen stations is of paramount importance as they are used for inseminating large number of cattle. The present study was conducted to assess the in vitro fertilisation capacity of crossbred bull semen cryopreserved during different seasons in Kerala as reports of such an evaluation are scarce.Methods: Semen samples from six crossbred bulls of same exotic inheritance, cryopreserved during rainy, post monsoon and summer seasons were procured from KLDB, Dhoni. The collected samples were evaluated for their in vitro fertilisation potential.Result: Hot dry summer season in Kerala adversely affects the fertilisation capacity of spermatozoa. Rainy season was observed to be the most favourable season for good quality semen production and post monsoon season was intermediate between summer and rainy season. It can be concluded from the present investigation that semen cryopreserved during summer season have lower fertilisation and cleavage rate than rainy and post monsoon season. This might be due to the harmful effect of significantly higher average maximum temperature and lower relative humidity occurred in the area during summer season on spermatogenesis.

scholarly journals Analysis of rainfall and temperature trends of selected stations over North East India during last century

MAUSAM ◽  
2021 ◽  
Vol 65 (4) ◽  
pp. 497-508
Author(s):  
S.I. LASKAR ◽  
S.D. KOTAL ◽  
S.K.ROY BHOWMIK
Keyword(s):  
Monsoon Season ◽  
Maximum Temperature ◽  
Rainfall Time Series ◽  
North East India ◽  
Post Monsoon ◽  
North East ◽  
The North ◽  
Increasing Trend ◽  
Post Monsoon Season ◽  
Increasing Trends

In this study, the trends of seasonal maximum and minimum temperatures and rainfall time series were investigated for 9 selected stations in the north eastern India with the available data stretching between the years 1913-2012.During the period under study the minimum temperature has increasing trends in almost all the stations of north east India except Cherrapunji where it shows decreasing trend in all the season of the year. In case of maximum temperature Cherrapunji, Guwahati and Imphal show increasing trends during all the seasons. Agartala and Shillong show increasing trend of maximum temperature during monsoon and post monsoon season. Dibrugarh and Pasighat show decreasing trend during pre monsoon season and increasing trend during all other seasons of the year. Gangtok shows decreasing trend of maximum temperature during all the seasons where as Silchar shows no trend in maximum temperature.Out of all the selected nine stations, most of the stations show either decreasing trend or no trend of rainfall except Guwahati which shows significant increasing trend of rainfall during post monsoon season.

Gut Content Analysis of Labeo Calbasu at Different Seasons in Dekhar Haor, Sunamgonj, Bangladesh

2021 ◽  
Vol 5 (2) ◽  
pp. 297-308
Author(s):  
F J Munny ◽  
M S Uddin ◽  
M S Islam ◽  
M T Alam ◽  
I N Suravi ◽  
...  
Keyword(s):  
Monsoon Season ◽  
Gut Contents ◽  
Future Research ◽  
Gut Content ◽  
Dominant Group ◽  
Feeding Intensity ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
Different Seasons ◽  
Management And Conservation

This research was conducted to find out the seasonal (monsoon and post monsoon) variation in gut contents of Labeo calbasu from June to November, 2016 in Dekhar haor of Sunamgonj district, Bangladesh. Three orders of phytoplankton were identified from the gut content viz. Bacillariophyceae (11 genera), Chlorophyceae (9 genera), and Cyanophyceae (4 genera). Bacillariophyceae (6.98±1.61×103cell/L) were identified as the most dominant phytoplankton group. Two types of zooplankton viz. crustacean (5 genera) and rotifer (5 genera) were identified. Crustaceans (0.88±0.4×103cell/L) were identified as the dominant group among zooplankton. Feeding intensity (average index of fullness, Gastrosomatic index) was higher in the post monsoon season compared with the monsoon season. The findings concluded that L. calbasu prefers phytoplankton over zooplankton, and the plankton consumption was slightly higher in the post-monsoon season than in the monsoon season. This research is expected to be crucial in the management and conservation of endangered L. calbasu in open waters, as well as provide baseline work for future research and open the path for captive aquaculture.

Influence of season on peak milk yield in Deoni breed of cattle in marathwada region of Maharastra state, India

2015 ◽  
Author(s):  
B. N. Thorat ◽  
B. M. Thombre ◽  
D. V. Bainwad ◽  
S. S. Bhutkar
Keyword(s):  
Milk Yield ◽  
Monsoon Season ◽  
Cold Season ◽  
Yield Data ◽  
Post Monsoon ◽  
South West ◽  
South West Monsoon ◽  
Post Monsoon Season ◽  
Different Seasons ◽  
West Monsoon

In the present investigation the sixteen years data (1995-2010) on daily peak milk yield of cows calved during cold, hot, south-west monsoon and post monsoon season each for twelve month in year and climatic attributes like temperature (maximum and minimum), humidity (maximum and minimum), sunshine hours and temperature humidity Index during corresponding period were collected. Daily peak milk yield data were analyzed statistically to see the effect of climatic attributes and to know their association with peak milk yield. Generally post monsoon climatic condition favours the milk production in animals due to pleasant climate and availability of quality fodder. The average daily peak milk yield of Deoni cows was 2.60 kg. It could be inferred that apart from availability of quality nutritious fodder during different seasons, maximum peak milk yield was recorded during post monsoon season followed by south-west monsoon season, cold season and hot season respectively.

scholarly journals Recent trends in climate of Bangalore

MAUSAM ◽  
2022 ◽  
Vol 53 (4) ◽  
pp. 425-438
Author(s):  
M. MOHAPATRA
Keyword(s):  
Relative Humidity ◽  
Monsoon Season ◽  
Winter Season ◽  
Maximum Temperature ◽  
Average Temperature ◽  
Bangalore City ◽  
Post Monsoon ◽  
Diurnal Range ◽  
Rate Of Increase ◽  
Post Monsoon Season

The linear trends in the monthly, seasonal and annual mean maximum temperature, minimum temperature, average temperature, diurnal range of temperature, rainfall, relative humidities at 0830 & 1730 hr IST of Bangalore city and airport have been analysed based on the data for the period from 1960-95. The variation in surface wind over Bangalore during above period has also been studied to find out impact of urbanisation on weather parameters. It is found that Bangalore city is becoming warmer in terms of mean maximum & mean minimum temperatures. Rate of increase is significantly higher over Bangalore city (central observatory) than that over airport during winter months. Similarly the rising trend of average temperature of Bangalore city is higher than of Bangalore airport during October to April being significantly so during winter season. Also the diurnal range of temperature of Bangalore is becoming larger in winter months with the rising trend being higher over Bangalore city than over airport. Even though rainfall does not show any significant trend, the rising trend during monsoon & falling trend during post monsoon season over Bangalore city are higher than that of Bangalore airport. Also though both Bangalore city & airport show maximum rising trend in mean relative humidity at 0830 hr IST during winter, the rate of rise is less over Bangalore city. Similarly though the relative humidity at 1730 hr IST shows decreasing trend during all the seasons, the rate of decrease is less over Bangalore city for all seasons except post monsoon season. The mean maximum, minimum and average temperatures and relative humidities show cyclic variation of their monthly trend coefficients during the year.

Seasonal Variations of Small Wading Birds in the Pichavaram Mangrove Forest, India

2021 ◽  
Vol 16 (2) ◽  
pp. 399-407
Author(s):  
Rajendran Jagadheesan ◽  
Jeganathan Pandiyan
Keyword(s):  
Mangrove Forest ◽  
Monsoon Season ◽  
Population Characteristics ◽  
Wading Birds ◽  
Direct Count ◽  
Numerous Species ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
Different Seasons

The Pichavaram Mangrove Forest (PMF) is one of the important wetlands in southern India. The PMF is harboring numerous species of shorebirds seasonally. The current study assessed the population characteristics of small wading birds by using direct count method from 2015 to 2016. In total, 27 species of small wading birds were recorded, in which the Little stint showed highest density 177.24±20.515 (No./ha.) and the Bar-tailed godwit showed lowest density 0.13±0.099 (No./ha.). Indeed the Little stint was only species turned highest density across the three different seasons studied. However, the bar-tailed godwit not recorded during the pre-monsoon and post-monsoon seasons, the Dunlin, Grey plover and Great sand plover not sighted during the post-monsoon season. The density, diversity and species richness of small wading birds showed significant differences among the seasons (P<0.001). The study inferred that the population characteristics of small wading birds are declining when compared to the previous studies. However exhaustive studies are essential to explore the quality of the PMF which is need of the hour since it is supporting various species of shorebirds seasonally.

scholarly journals Diversity and seasonality of polypore fungi in the moist deciduous forests of Peechi-Vazhani Wildlife Sanctuary, Kerala, India

2016 ◽  
Vol 8 (12) ◽  
pp. 9434
Author(s):  
A. Muhammed Iqbal ◽  
Kattany Vidyasagaran ◽  
P. Narayan Ganesh
Keyword(s):  
Fungal Diversity ◽  
Monsoon Season ◽  
Deciduous Forests ◽  
Wildlife Sanctuary ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
Different Seasons ◽  
Species Similarity ◽  
Polypore Fungi ◽  
Daedalea Flavida

The objective of present study was to understand the diversity, distribution and seasonality of polypore fungi in the moist deciduous forests of Peechi-Vazhani Wildlife Sanctuary in three different seasons.  Results obtained showed that density and frequency of occurrence have been varied significantly during different seasons and the community structure and species composition during monsoon and post monsoon seasons were distinct from pre-monsoon season.  Fomitopsis feei with higher abundance values dominated the moist deciduous forests during monsoon season (17.72) and post-monsoon season (13.79).  During pre-monsoon season, Daedalea flavida was the dominant species with abundance value of 10.93.  The above fungi were predominant during all the seasons due to their high ecological amplitude.  Fungal diversity analysis showed that species richness was higher during monsoon season and revealed the influence of seasonal variation on fungal diversity.  The high species similarity was observed between monsoon and post monsoon season compared to pre-monsoon and monsoon. 

scholarly journals Assessment of Trophic Responses of a Reservoir to Seasonal and Annual Variations in Monsoon

Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2117
Author(s):  
Su-mi Kim ◽  
Hyun-su Kim
Keyword(s):  
Water Quality ◽  
Trophic State ◽  
Monsoon Season ◽  
Phytoplankton Growth ◽  
Phosphorus Loading ◽  
Nutrient Concentrations ◽  
Trophic State Index ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
State Index

The variations in water quality parameters and trophic status of a multipurpose reservoir in response to changing intensity of monsoon rain was investigated by applying a trophic state index deviation (TSID) analysis and an empirical regression model to the data collected in two periods from 2014 to 2017. The reservoir in general maintained mesotrophic conditions, and Carlson’s trophic state index (TSIc) was affected most by TSITP. Nutrient concentrations, particularly phosphorus, did not show strong correlations with precipitation, particularly in the period with weak monsoon, and a significant increase in total phosphorus (TP) was observed in Spring 2015, indicating the possibility of internal phosphorus loading under decreased depth and stability of water body due to a lack of precipitation. TSIChl was higher than TSISD in most data in period 1 when a negligible increase in precipitation was observed in the monsoon season while a significant fraction in period 2 showed the opposite trend. Phytoplankton growth was not limited by nutrient limitation although nutrient ratios (N/P) of most samples were significantly higher than 20, indicating phosphorus-limited condition. TSID and regression analysis indicated that phytoplankton growth was limited by zooplankton grazing in the Spring, and that cell concentrations and community structure in the monsoon and post-monsoon season were controlled by the changing intensity of the monsoon, as evidenced by the positive and negative relationships between community size and cyanobacterial population with the amount of precipitation in the Summer, respectively. The possibility of contribution from internal loading and an increase in cyanobacterial population associated with weak monsoon, in addition to potential for nutrient enrichment in the post-monsoon season, implies a need for the application of more stringent water quality management in the reservoir that can handle all potential scenarios of eutrophication.

A Study on Prevalence and Seasonal Distribution of Dengue at a Tertiary Care Centre of North India

Healthline ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 100-107
Author(s):  
Arti Agrawal ◽  
Vikas Kumar ◽  
Sanjeev Kumar ◽  
Neha K Mani
Keyword(s):  
Monsoon Season ◽  
Dengue Infection ◽  
Tertiary Care ◽  
Seasonal Distribution ◽  
North India ◽  
Care Centre ◽  
Tertiary Care Centre ◽  
Post Monsoon ◽  
Post Monsoon Season ◽  
Male Preponderance

Introduction: Dengue virus infection is a major public health issue prevalent in tropical and sub-tropical countries all over the world mostly in urban and semi-urban areas. WHO estimates about 50-100 million dengue infections worldwide every year. The present study is aimed to assess the prevalence and seasonal distribution of dengue disease during three consecutive years from 2016-2018 at a tertiary care centre of North India. Method: This is an observational retrospective study conducted on total 6,481 clinical suspected cases referred from indoor and outdoor departments of Medicine and Pediatrics of one of the medical colleges of Agra during the period from 1st January 2016 to 31st December 2018. Results: The maximum positivity was recorded in the year 2016 (16.66%), followed by 2017 (14.07%) and 2018(13.56%).Our study shows male preponderance with maximum cases in the year 2018 was recorded in the month of October (22.75%) whereas the lowest in the month of May (1.96%). Most of the cases were in the age group 0-30 years with a male preponderance. The outbreak occurred during the months of August to November indicating vector transmission in the monsoon and post-monsoon season. Conclusion: From the analysis, this study reflects that the numbers of dengue cases in 2016 were maximum and outnumbered the dengue cases among three consecutive years from 2016 to 2018. The peak in dengue positivity was observed during September to October. As this disease affects the population in the monsoon and post monsoon months therefore continuous monitoring of dengue infection is important during the post-monsoon season.

scholarly journals Seasonal Nature and Trends of Tropical Cyclone Frequency and Intensity over the North Indian Ocean

2020 ◽  
Vol 15 (3) ◽  
pp. 526-534
Author(s):  
Abhisek Pal ◽  
Soumendu Chatterjee
Keyword(s):  
Time Series ◽  
Tropical Cyclone ◽  
Indian Ocean ◽  
Monsoon Season ◽  
North Indian Ocean ◽  
Post Monsoon ◽  
The North ◽  
Increasing Trend ◽  
Post Monsoon Season ◽  
Cyclone Frequency

Tropical cyclone (TC) genesis over the North Indian Ocean (NIO) region showed significant amount of both spatial and temporal variability.It was observed that the TC genesis was significantly suppressed during the monsoon (June-September) compared to pre-monsoon (March-May) and post-monsoon (October-December) season specifically in terms of severe cyclonic storms (SCS) frequency. The Bay of Bengal (BoB) was characterized by higher TC frequency but lower intensity compared to the Arabian Sea (AS). It was also observed that the TC genesis locations were shifted significantly seasonally.The movement of the TCs also portrayed some significant seasonal differences. The pre-monsoon and post-monsoon season was responsible for generating TCs with higher values of accumulated cyclone energy (ACE) compared to the monsoon. The time series of TC frequency showed a statistically significant decreasing trend whereas the time series of ACE showed astatistically significant increasing trend over the NIO.

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