Induction of parturition in sheep using oestradiol benzoate

1976 ◽  
Vol 16 (81) ◽  
pp. 462 ◽  
Author(s):  
BJ Restall ◽  
J Herdegen ◽  
P Carberry
Keyword(s):  
Single Dose ◽  
Agricultural Research ◽  
Research Station ◽  
The Third ◽  
Agricultural Research Station ◽  
Oestradiol Benzoate ◽  
Long Acting

The efficacy of oestradiol benzoate (ODB) in inducing parturition in Dorset Horn x Merino ewes was examined in two trials conducted at the Agricultural Research Station, Condobolin during the autumn and spring of 1974. In the first trial ewes were given either 10, 20 or 40 mg of ODB i.m. as a single dose between days 140 and 144 of gestation. In the three days following treatment 50 per cent of untreated ewes lambed. Of the treated ewes, 14.7 per cent lambed on the first day after treatment, 79.4 per cent lambed on the second day after treatment and 5.9 per cent lambed on the third day after treatment. Abortion was induced in 40 to 70 per cent of ewes inadvertently treated on days 126 to 130 of gestation, with all lambs born dead or dying. In a second trial ODB was effective in inducing parturition at doses as low as 7.5 mg. For ewes treated at 141 days of gestation optimal synchrony of parturition, between 35 and 50 hours after treatment, was obtained with doses of 20 and 30 mg ODB. Lamb losses (19 to 23 per cent) in treated ewes were similar to those for untreated ewes. ODB was superior to either a short or long acting corticoid (Dexamethasone) in synchronizing and inducing parturition in ewes treated at 141 days of gestation. Lambs born prematurely grew at least as well as lambs born at the normal time.

The effect of frequency and time of shearing on the reproduction and wool growth of Bungaree South Australian Merino ewes

1966 ◽  
Vol 6 (22) ◽  
pp. 305 ◽  
Author(s):  
BJ McGuirk ◽  
JR Paynter ◽  
RB Dun
Keyword(s):  
Agricultural Research ◽  
Dual Group ◽  
Research Station ◽  
Wool Production ◽  
The Third ◽  
Agricultural Research Station ◽  
Wool Growth ◽  
Dual Groups ◽  
Fleece Weight ◽  
Australian Merino

Two hundred and seventy-five Bungaree South Australian Merino ewes were divided into three groups after shearing in June 1963 at Trangie Agricultural Research Station. One group was shorn in December 1963 and 1964 (December group), another in June 1964 (June group), while the third group was shorn at all three of these times (Dual group). The ewes were joined with rams on February 25, 1964. Twenty-nine days later 88 per cent of the ewes shorn in December (December and Dual groups) had exhibited oestrus compared with 72 per cent in the unshorn (June) group (P<0.05). Shearing in December also increased the percentage of wet ewes. Pre-lambing shearing did not influence lamb losses. Shearing twice a year (Dual group) increased the wool production of dry ewes compared with shearing once in the same 12 month period. The increases in clean fleece weight when the additional shearing in the Dual group was in December and June were 15 and 10 per cent respectively. However, Dual shearing did not increase fleece weights over the December group when the ewes were pregnant at the time of the additional shearing in June. Dual shearing improved wool colour and reduced fleece rot, but the wool of the Dual group had fewer crimps per inch and poorer handle than the June shorn wool (P<0.05). Estimated wool returns favoured the groups shorn once per year (P<0.05).

Effect of intercrops on growth and yield of turmeric (Curcuma longa L.)

2017 ◽  
Vol 26 (1) ◽  
pp. 51
Author(s):  
R Chitra, P Hemalatha
Keyword(s):  
Short Duration ◽  
Agricultural Research ◽  
Curcuma Longa ◽  
Growth And Yield ◽  
Research Station ◽  
Initial Growth ◽  
Agricultural Research Station

The initial growth of turmeric is rather slow and takes about 4-5 months to cover the inter space. Therefore, the available space between the rows of turmeric could be effectively utilized by growing short duration crops like, vegetables, cereals etc. Hence, it is worthwhile to explore the possibilities of growing compatible crops with turmeric. With this background the experiment on effect of intercrops on growth and yield of turmeric was conducted at Agricultural Research Station, Bhavanisagar. Among the different intercrops, turmeric with cowpea recorded the maximum fresh rhizome yield per hectare (30.78 t ha-1) while turmeric + bhendi registered the maximum B:C ratio (2.68:1). Monocropping of turmeric recorded the lowest B:C ratio (1.67:1) among all the treatments.  

Influence of sowing dates on the incidence of powdery mildew of chilli

2017 ◽  
Vol 4 (2) ◽  
Author(s):  
SUDHEENDRA A. ASHTAPUTRE
Keyword(s):  
Powdery Mildew ◽  
Field Experiment ◽  
Disease Severity ◽  
Agricultural Research ◽  
Time Interval ◽  
Research Station ◽  
Inoculum Potential ◽  
Weather Factors ◽  
Agricultural Research Station ◽  
Sowing Dates

A field experiment was conducted during kharif, 2005 at Agricultural Research station, Devihosur, Haveri, Karnataka to assess the progress of powdery mildew at different time interval of sowing dates. Totally 20 different dates of sowings were imposed in the experiment at an interval of 10 days. The crop sown on last week of May to mid of June recorded minimum disease severity compared to rest of the date of sowings. This clearly indicated that crop sown during this period suffers less, which may be due to low inoculum potential, whereas late sown crop suffers more because of the readily available inoculum in the early sown crops. Low disease severity in last week of May to mid of June sowing may be attributed to the non-congenial weather factors for the development of the disease.

scholarly journals Validation of Target Yield based Fertilizer Prescription for Rabi Castor in Alfisol

2020 ◽  
pp. 166-173
Author(s):  
Kasthuri Rajamani ◽  
A. Madhavi ◽  
T. Srijaya ◽  
P. Surendra Babu ◽  
Pradip Dey
Keyword(s):  
Field Experiments ◽  
Agricultural Research ◽  
Organic Fertilizers ◽  
Research Station ◽  
Agricultural Research Station ◽  
Target Yield ◽  
Test Verification ◽  
Absolute Control ◽  
Inorganic And Organic

Field experiments were conducted from 2015-16 to 2017-18 on a Typic Rhodustalfs (Alfisol) soils of Telangana at Regional Agricultural Research Station, Palem, Nagarkurnool, Southern Telangana Zone, India to validate targeted yield based fertilizer prescription equations which developed for hybrid castor by adopting eight treatments viz., Blanket recommendation (100% RDF:80:40:30 kg N, P2O5 and K2O ha-1), Blanket+5 t ha-1 of vermin-compost (VC), STCR-Target yield with NPK alone at 25q ha-1, STCR-Target yield with IPNS at 25q ha-1, STCR-Target yield with NPK alone at 30q ha-1, STCR-Target yield with IPNS at 30q ha-1, Farmer’s practice (40:20:0kg N, P2O5 and K2O ha-1) and Absolute control (without inorganic and organic fertilizers). The findings of these test verification trials clearly revealed that the percent achievement of the aimed yield target was within + 10 percent variation confirming the validity of the equations. Using STCR-NPK@25 and 30q ha-1 recorded significantly higher seed (20.74 and 22.30q ha-1) and stalk (24.63 and 26.36q ha-1) yield over blanket recommendation (19.40 and 23.13 q ha-1), while STCR-IPNS at 25 and 30 q ha-1recorde relatively higher seed (20.98 and 22.69q ha-1) and stalk (25.88 and 27.13q ha-1) yield over STCR-NPK alone treatments. The magnitude of built-up was higher with STCR-IPNS treatments as compared to STCR-NPK alone, blanket recommendations, farmer’s practice and absolute control.

scholarly journals Effect of mulching method and planting time on the yield and yield attributes of tomato in hill slope

1970 ◽  
Vol 34 (2) ◽  
pp. 227-232
Author(s):  
ZA Firoz ◽  
MM Zaman ◽  
MS Uddin ◽  
MH Akand
Keyword(s):  
Key Words ◽  
Agricultural Research ◽  
Combined Effect ◽  
Research Station ◽  
Yield Attributes ◽  
Planting Time ◽  
Agricultural Research Station ◽  
Tomato Yield ◽  
Hill Slope ◽  
The Hill

An experiment was conducted at the Hill Agricultural Research Station, Khagrachari from September 2002 to February 2003 to find out the effect of mulching method (Mulching one month before planting, mulching just after planting and no mulching) and planting times (01 October, 16 October and 01 November) on the yield and yield attributes of tomato in hill slope. The highest yield (21.43 t/ha) was obtained from plant where mulch was given one month before planting. Among three planting times, the highest yield (15.27 t/ha) was obtained from 01 October planting. In case of combined effect, mulching one month before planting with 01 October planting produced the highest yield (28.06 t/ha) of tomato in hill slope. Key Words: Mulching; planting time; tomato yield; hill slope.  DOI: 10.3329/bjar.v34i2.5793Bangladesh J. Agril. Res. 34(2): 227-232, June 2009

Bartlett's Work on Agricultural Experiments

1975 ◽  
Vol 12 (S1) ◽  
pp. 9-16
Author(s):  
W. G. Cochran
Keyword(s):  
Treatment Effects ◽  
Agricultural Research ◽  
Experimental Designs ◽  
Research Station ◽  
Agricultural Research Station ◽  
Efficient Detection ◽  
Selection Of

A selection of Bartlett's work as an operating statistician in his first position as statistician 1934–38 at the I.C.I. agricultural research station at Jealott's Hill, Berks., is described. This illustrates some of the methods he used for the efficient detection of treatment effects and for an appraisal of the suitability of the experimental designs that were being used.

Insect pest complex of rose at Regional Agricultural Research Station, Ambalavayal, Wayanad

2017 ◽  
pp. 39-44
Author(s):  
R. Smitha ◽  
P. Rajendran ◽  
P.T. Sandhya ◽  
V.S. Aparna ◽  
P.C. Rajees
Keyword(s):  
Agricultural Research ◽  
Insect Pest ◽  
Research Station ◽  
Agricultural Research Station

scholarly journals Experiences with deferred grazing at the Taranaki Agricultural Research Station

1991 ◽  
pp. 79-83
Author(s):  
D.A. Mccallum ◽  
N.A. Thomson ◽  
T.G. Judd
Keyword(s):  
Agricultural Research ◽  
Low Cost ◽  
Animal Health ◽  
Research Station ◽  
Agricultural Research Station ◽  
Grazed Pasture ◽  
Dead Material ◽  
Tiller Density ◽  
Milk Solids

Deferred grazing is the practice of holding over pasture in situ that has been considered surplus to animal requirements in spring, to be grazed at a later date when a shortage of pasture occurs, usually in summer/autumn. This non-mechanical method of pasture conservation was developedandpractised from 1986-1989 at the Taranaki Agricultural Research Station as part of a low cost dairy system. At the low stocking rate (3.7 cows/ha) 13% of the farm area was conserved as deferred grazing and allowed to naturally reseed before grazing. The reseeding doubled the tiller density of perennial ryegrass, increasing pasture growth by 15 19% the following season. This, combined with the nil cost associated with conserving supplements, made this system more profitable than the traditional haysilage system. For the natural reseeding to be successful, the deferred grazed pasture should be removed from thegrazingrotationduringtheryegrassreproductive phase (mid-October to mid-November) and not grazed until after the ryegrass seed is mature (mid- January). The method developed to Wise deferred grazed pasture has been to strip graze between the morning and night milkings. Cows are offered a pasture allowance of 10 kg DM/cow/day or one, two hundred and fiftieth of the farm per day, to achieve a utilisation of around 50%. Cows graze selectively leavingaresidualofabout4000kg DM/ haofpredominantly dead material. Mowing before grazing increased utilisation, but there was no advantage in milk solids production. No benefits were observed when tall fescue or phalaris pastures were allowed to naturally reseed. Deferred grazing had no effect on grass grub or porina populations if grazed before April. No detrimental animal health effects have been measured with deferred grazing. To reduce farm operating costs and increase pasture growth, it is recommended that 10% of the farm is deferred and allowed to naturally reseed on an annual basis. Keywords deferred grazing, pasture conservation, naturalreseeding, tiller density,pasture growth, dairy production

scholarly journals Preliminary study of natural cross-fertilization in mung bean, Phaseolus aureus Roxb.

1964 ◽  
Vol 12 (4) ◽  
pp. 260-262
Author(s):  
H.A. Van Rheenen
Keyword(s):  
Mung Bean ◽  
Agricultural Research ◽  
Research Station ◽  
Phaseolus Aureus ◽  
Agricultural Research Station ◽  
Preliminary Study ◽  
Cross Fertilization ◽  
Natural Cross

The degree of cross fertilization between two varieties separated by a distance of 50 cm. was approximately 3% in a test at the Agricultural Research Station, Manokwari, West Irian. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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