scholarly journals On the relationship between milk yield and climatic factors

MAUSAM ◽  
2021 ◽  
Vol 43 (2) ◽  
pp. 195-198
Author(s):  
V.S. RAMACHANDRAN ◽  
N. M. MURALI

Statistical analysis was carried out between seasonal milk yield and some of the derived climatic variables at a semi-arid tropical locality in Bangalore. The study revealed that the milk yields varied from the highest (9, 3 lit/cow/day) in summer season to the lowest (8, 5 lit/cow/day) in winter season and almost the same in both the monsoon season (8, 7 and 8, 5 lit/cow/day during southwest and northeast monsoon seasons). It was envisaged that the climatic components like wind chill index had negative effect while wetness index and photo-thermal heat units had both positive (summer and winter seasons) and negative (two monsoon seasons) influences on seasonal milk yields.

2019 ◽  
Vol 25 (1) ◽  
Author(s):  
ADITYA NARAYAN

The present investigation deals with the prevalence of infection of cestode, Pseudoinverta oraiensis19 parasitizing Clarias batrachus from Bundelkhand Region (U.P.) India. The studies were recorded from different sampling stations of Bundelkhand region of Uttar Pradesh. For this study 360 fresh water fish, Clarias batrachus were examined. The incidence of infection, monsoon season (17.50%) followed by winter season (20.00%) whereas high in summer season (30.00%).


HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 470e-470
Author(s):  
Md. Shahidul Islam ◽  
S. Khan ◽  
S.M.M. Hossain

Seasonal fluctuations of the physical and biochemical characteristics of three tomatoes, including two large-fruited and one cherry-fruited cultivars, were studied in seven different sowing time at an interval of 45 days. Seasonal variation were noted in the external and internal quality characteristics. The seasonal pattern of ripening exhibited a rapid first ripening during summer, followed by a progressive decline until the winter season. Fruits picked during early winter to spring had higher constituents compared to summer season. The fruits matured during the summer season showed higher accumulation of organic and ascorbic acid; but the crop duration was found to be shortened. On the other hand, the fruits matured during winter to spring season had higher firmness, soluble sugars and longer growing period. The lycopene synthesis was enhanced during spring to winter seasons. Of the climatic factors recorded, temperature is predominantly implicated in affecting tomato fruit quality. The results indicated that, firmness, total soluble solids and turning point of hue (arctan a*/b*) act as the indicators of fruit maturity, and breaker stage is more appropriate stage of harvesting in all the seasons studied. But regarding nutritional value and appearance, and for fresh consumption, pink stage of ripening is the best for harvesting. In the present study, although cropping season and growing temperature differed widely, but the cumulative temperature (°C day; from flowering to maturation) difference among growing seasons was small, and most suitable harvest period was found to be around 1000 °C day. Thus, for consumption, marketing and transportation, the fruits availing around 1000 °C days cumulative temperature are congenial to be harvested.


2016 ◽  
Vol 8 (1) ◽  
pp. 485-488
Author(s):  
Bindu Sharma

The present investigation deals with the prevalence of three cestode parasites viz. Lytocestus sp., Proteocephalus sp. and Gangesia sp. collected from the intestine of a freshwater fish Channa punctatus in different blocks of Meerut region (U.P.) India during June, 2014 to May, 2015. A total of 125 parasites were collected throughout theyear. The high incidence of infection of all these species Lytocestus sp., Proteocephalus sp., Gangesia sp. was recorded in summer season (70.83%, 77.27% abd 72 % respectively) followed by winter season (63.63%, 57.89% abd 52.38% respectively) whereas infection was low in monsoon season (36.84%, 27.78% abd 23.52% respectively). The present study clearly indicates that the intensity of infection throughout the year was found highest in summer season followed by winter and lowest in monsoon. Findings show that beginning of the breeding period, feeding habitat, presence of intermediate host and environmental factors are influencing the seasonality of cestode parasitic infection.


2018 ◽  
Vol 24 (2) ◽  
Author(s):  
N. B. SINGH ◽  
K.L. TIWARI

The survey of aeromycoflora over Mentha arvensis L. plants was carried out at Raipur. During investigation period, a total of 52 fungal species were recorded. Maximum 35 species recorded during winter season and minimum 19 species during summer season. The seasonal variations showed climatic factors influence the occurrence of aeromycoflora. Syncephalastrum racemosum, Alternaria alternate, Aspergillus niger, Cladosporium cladosporoides, Curvularia lunata, and Fusarium oxysporum were recorded in all the three seasons of the year. Emericella nidulans and Aspergillus japonicus were recorded during summer and rainy season. Mucor hiemalis f. silvaticus, Rhizopus oryzae, Curvularia clavata, Fusarium equiseti and Penicillium frequentans during rainy and winter season. Mycelia sterilia (White-ii) was recorded during summer and winter season only. Maximum number of fungal species i.e. 35 was recorded during winter season because of the favourable temperature (29.1ºC) and relative humidity (62.1%). Minimum numbers of fungal species i.e. 19 were recorded during summer season due to unfavourable temperature (38.4ºC) and relative humidity (46.1%).


2017 ◽  
Vol 23 (2) ◽  
Author(s):  
ADITYA NARAYAN ◽  
MUKTA SINGH ◽  
ABHA RAJ SINGH

The present investigation deals with the incidence of infection of cestode, Breviscolex hinotaensis 18 parasitizing Clarias batrachus from Bundelkhand Region (M.P.) India. The incidence of infection were recorded in winter season (28.33%) followed by monsoon season (26.66%) whereas low in summer season (21.66%).


2018 ◽  
Vol 38 (04) ◽  
pp. 294-298
Author(s):  
Masego Masukujane ◽  
Tidimalo Coetzee ◽  
Robert Bob Ngwanathebe ◽  
Yudai Ishimoto ◽  
Kinya Akashi

AbstractJatropha curcas L. is a stem-succulent shrub that produces high concentrations of seed oils that are convertible into biodiesel. In this study, the incidence of four insect pests on Jatropha, Strabala rufa, Gnathamitermes tubiformans, Pempelia morosalis, and Acanthoplus discoidalis was recorded over three years in a semi-arid climate in Gaborone, Botswana. The occurrence of these insects was concentrated in the summer season from October to April, while lower numbers of all species were found in May as the temperature began to reduce towards the winter season, suggesting that insect pests of Jatropha exhibit a unique temporal pattern in this region. A considerable variation was observed among Jatropha accessions regarding the insect pest occurrence, indicating a vast difference in the susceptibility to insect pests among Jatropha accessions.


2020 ◽  
Vol 33 (22) ◽  
pp. 9581-9594
Author(s):  
Gerry Bagtasa

AbstractThe present study investigates the influence of the Madden–Julian oscillation (MJO) on the intraseasonal variability of summer and winter monsoon rainfall in the Philippines. The monsoon wind–terrain interaction that gives rise to rainfall in the Philippines leads to a sharp contrast between west and east coast rainfall patterns during summer and winter monsoon seasons, respectively. During the summer monsoon season, the eastward-propagating MJO modulates tropical cyclone (TC) activity in the western North Pacific (WNP) on MJO phases 5–7. TC rainfall and remote TC precipitation due to Rossby wave response to TC heating induces strong southwesterly flow that enhances moisture transport and brings anomalous rainfall to the western region of the Philippines. On the other hand, during the winter season, an induced Matsuno–Gill-type pattern to the southeast of the Philippines influences the strength of the Asian winter monsoon. Active (inactive) convection in the tropical Maritime Continent and western Pacific during MJO phases 4–6 produces the anomalous Philippine Sea cyclonic (anticyclonic) circulation. The cyclonic (anticyclonic) anomaly leads to an enhanced (weakened) northeast monsoon flow and wet (dry) rainfall anomaly along the eastern Philippines.


2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Namrta Choudhry ◽  
Shweta Singh ◽  
Mohammad Badruzzaman Siddiqui ◽  
Sayyada Khatoon

Tinospora cordifolia(Thunb.) Miers, Menispermaceae, is a dioecious creeper, commonly known as “Giloe” or “Guduchi” with significant medicinal importance in the traditional systems of medicine. It is designated as Rasayana drug in Ayurveda and recommended for a number of diseases and also as adaptogen and immunomodulator. The safety and efficacy of herbal medicines are closely correlated with the quality of the source materials. The aim of this study is to see the effect of seasons on phytoconstituents and how these vary in male and female stem samples ofT. cordifolia. The study revealed that total phenolics and total sugar concentration obtained highest values in summer season while starch and tannin content were found maximum in winter season in both the genders. However, biomarkers, tinosporaside and berberine, reached to their highest concentration in monsoon season. Further, antioxidant potential revealed the highest inhibition percentage in winter season as well as in late summer season. The results of this study suggest that the female plant is best for its therapeutic phytoconstituents and the best harvesting seasons may be either winter or late summer for antioxidant potential and immunomodulator activities and monsoon for antidiabetic activity ofT. cordifolia.


2016 ◽  
Vol 855 ◽  
pp. 159-164 ◽  
Author(s):  
Sukrit Kirtsaeng ◽  
Pakdee Chantraket

This research aimed to study the rainfall estimation with weather radar in southern Thailand. Both precipitation data from Sathing-Phra radar station, Songkhla, and hourly rainfall data from automatic tipping bucket rain gauges are of the Thai Meteorological Department (TMD) in 2012-2013. These data were used to study the relationship between radar reflectivity (Z) and intensity of the rainfall (R) in both monsoon season. The rain-rate obtained from radar with Z-R equation was a precise rain estimate method. The calculation provided the rain-rate more accurate than original equation often used. The equation of this study was best used during the northeast monsoon which occurred in rainy season in eastern coast of the South (Thailand's Gulf). However, the result of this study should be improved to estimate rain-rate by radar for southern Thailand and, as input data, applied for applications of early warning systems.


2008 ◽  
Vol 53 (No. 11) ◽  
pp. 453-461
Author(s):  
J. Bouška ◽  
M. Štípková ◽  
P. Pytloun ◽  
J. Pytloun ◽  
M. Kubešová

The objective of this study was to analyze the relationships among cows’ body condition score before calving, subsequent BCS changes, milk yield, lactation characteristics and their sires’ relative breeding value for net daily gain. Increasing the relative breeding value of net daily gain in the sires was associated with increased BCS in their daughters. The differences ranged between 0.02 and 0.18 points in the particular lactation periods, but they were not statistically significant. The group of cows with the highest BCS before calving showed the highest BCS decrease (–0.25 points) after calving (<I>P</I> < 0.01); the BCS loss lasted for 3 months. The analysis of the relationship between the relative breeding value of sires for net daily gain and milk yield of their daughters showed a negative effect of RBV NG ≤ 89 on the daughters’ milk yield (<I>P</I> < 0.05), while the negative differences were up to – 279.12 kg of fat-protein corrected milk. The effect of this trait on the lactation curve was also analyzed.


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