The importance of close hocks in Merino breeding

1966 ◽  
Vol 6 (21) ◽  
pp. 134
Author(s):  
RB Dun ◽  
BA Hamilton
Keyword(s):  
Agricultural Research ◽  
Research Station ◽  
Body Measurements ◽  
Phenotypic Correlations ◽  
Agricultural Research Station ◽  
Fleece Weight

Ewes born between 1956 and 1959 in a number of Merino selection flocks maintained at Trangie Agricultural Research Station were scored for distance between the hocks : 1 wide to 6 close. The heritability of hock score was high (0.49 � 0.10). The phenotypic correlations between hock score and fleece and body measurements were all small although the following were significant and positive : with greasy fleece weight, 0.11 ; with clean fleece weight, 0.06 ; with fold score, 0.09. Hock score had no influence on the total number of lambs weaned per ewe-lifetime. Ewes with close hocks (scores 5 and 6) did not lag in the rear third of a travelling flock relative to ewes with score 4 or score 1 hocks.

Hybrid vigour and lamb production. 2. Effects on survival and growth of first-cross lambs, and on wool and body measurements of hogget ewes

1978 ◽  
Vol 18 (95) ◽  
pp. 753 ◽  
Author(s):  
BJ McGuirk ◽  
ME Bourke ◽  
JM Manwaring
Keyword(s):  
Agricultural Research ◽  
Fibre Diameter ◽  
Fibre Length ◽  
Research Station ◽  
Hybrid Vigour ◽  
Body Measurements ◽  
South Wales ◽  
Survival And Growth ◽  
Lamb Survival ◽  
Fleece Weight

In an experiment at Cowra Agricultural Research Station, New South Wales, five drops of Border Leicester (BB), Merino (MM), Border Leicester x Merino (BM) and Merino x Border Leicester (MB) lambs have been compared to estimate hybrid vigour effects on lamb survival and growth, and on the wool and body measurements of ewe hoggets. Hybrid vigour has been estimated as the percentage superiority of the crossbreds 1/2(MB + BM) over the average of the purebred 1/2(BB + MM) flocks. Hybrid vigour was observed for lamb survival, with the crossbreds superior by 10 per cent in lambs weaned per lamb born (P < 0.05). The crossbred lambs were also heavier at birth (4 per cent) and weaning (6 per cent) and crossbred wether lambs were 11 per cent heavier at slaughter (all P < 0.05). The crossbred ewes were significantly superior to the average of the purebred flocks in both greasy (8 per cent) and clean fleece weight (12 per cent), liveweight (12 per cent) and chest depth (5 per cent) (all P < 0.05). There was no evidence that the crossbreds were superior in any component of wool production per unit area of the skin ; fibre length, fibre diameter or follicle density. Other evidence from this experiment indicates that the breeds and crosses differ in their susceptibility to pneumonia and that there may be heterosis for resistance. This situation could give rise to heterosis for production characters and the heterosis estimates obtained may only be applicable to first-cross flocks derived from Border Leicester studs which are susceptible to pneumonia. Lamb survival to weaning was higher for purebred Merinos (88 per cent) than for purebred Border Leicesters (73 per cent, P < 0.05). The Border Leicester lambs were heavier at all ages and in all years, although the magnitude of their superiority varied significantly between years (P < 0.05). This breed x year interaction was also significant for clean fleeca weight, but the average production of the two groups was similar over the five years. Variation, measured as the coefficient of variation, was generally lower within the crossbred flocks for those characters for which hybrid vigour effects were observed, but these differences were not statistically significant.

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).

The comparative productivity of five ewe breeds. 3. Adult ewe performance

1980 ◽  
Vol 20 (104) ◽  
pp. 288 ◽  
Author(s):  
KD Atkins
Keyword(s):  
Litter Size ◽  
Reproductive Performance ◽  
Agricultural Research ◽  
Research Station ◽  
Agricultural Research Station ◽  
Pregnancy And Lactation ◽  
Fleece Weight

Reproductive, wool and liveweight data on adult ewes from five breeds at Temora Agricultural Research Station between 1966 and 1972 were analyzed .The breeds were a Border Leicester x Merino fixed halfbred (BLM), Corriedale, Polwarth, a South Australian strong wool (S.A. Merino) and medium wool Peppin strain of Merino. Mean levels of reproductive performance were 1.22,0.96,0.85,0.78 and 0.88 lambs weaned per ewe joined for the BLM, Corriedale, Polwarth, S.A. Merino and Peppin Merino breeds, respectively. The superiority of the BLM breed was primarily due to a higher proportion of ewes bearing multiple lambs, of ewes lambing. Average greasy fleece weights for the breeds were 4.58, 5.67, 4.75, 6.1 5 and 4.95 kg, respectively. Pregnancy and lactation reduced fleece weight by 6.1 % and 3.3%, respectively. There was no additional effect of litter size on fleece weight. The liveweights of adult ewes prior to joining were 59.6, 54.8, 46.3, 49.0 and 42.7 kg for the BLM, Corriedale, Polwarth, S.A. Merino and Peppin Merino, respectively. The implications of this large variation in adult liveweight to the evaluation of the breeds were discussed.

The comparative productivity of five ewe breeds. 2. Hogget wool production

1980 ◽  
Vol 20 (104) ◽  
pp. 280 ◽  
Author(s):  
KD Atkins
Keyword(s):  
Environmental Conditions ◽  
Agricultural Research ◽  
Fibre Volume ◽  
Research Station ◽  
Wool Production ◽  
Agricultural Research Station ◽  
Average Fibre ◽  
Fleece Weight

This paper contains information on the fleece characteristics of hogget ewes from five breeds in each of seven years at Temora Agricultural Research Station. Measurements of greasy fleece weight, clean scoured yield and the components of clean fleece weight were made on the following breeds: a Border Leicester x Merino fixed halfbred (BLM), Corriedale, Polwarth, a South Australian strong wool (S.A. Merino) and a medium wool Peppin strain of Merino. Average annual clean fleece weights were 3.53, 3.53, 3.04, 2.77 and 2.70 kg for the S.A. Merino, Corriedale, BLM, Peppin Merino and Polwarth breeds respectively. Average fibre diameters of these breeds were 23.1, 25.1, 27.2, 20.3 and 22.1 pm respectively. An interaction between breeds and years for clean fleece weight was associated with larger differences between the breeds in the years when environmental conditions favoured higher average clean fleece weights. Differences between breeds were large in all the components of clean fleece weight. Within breeds, the contribution of variation in follicle number to variation in clean wool weight was relatively greater in the Polwarth and Peppin Merino breeds than in the Corriedale and S.A. Merino breeds, with the BLM breed intermediate. The converse ranking applied to variation in fibre volume as a contributor to variation in clean wool weight within breeds.

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.

Genetic parameters of Barki sheep raised under semi-arid conditions

1969 ◽  
Vol 11 (3) ◽  
pp. 361-367 ◽  
Author(s):  
M. H. Fahmy ◽  
E. Salah E. Galal ◽  
Y. S. Ghanem ◽  
S. S. Khishin
Keyword(s):  
Genetic Parameters ◽  
Genetic Correlations ◽  
Research Station ◽  
Phenotypic Correlations ◽  
Arid Conditions ◽  
Body Weights ◽  
Genetic And Phenotypic Correlations ◽  
Fleece Weight ◽  
Semi Arid ◽  
Desert Research

SUMMARYRecords on 695 lambs were collected over a period of 5 years from 1961/62 to 1965/66, at Ras El-Hekma Desert Research Station, 230 km west of Alexandria. The characters studied were birth, weaning and yearling body weights, pre- and post-weaning daily gains and greasy fleece weight.Birth, 120-day and 365-day body weights were 3·4, 18·2 and 33·4 kg respectively. Greasy fleece weight at 16 months of age was 3·29 kg. Heritability estimates of birth, weaning, yearling weights, pre- and post-weaning daily gains and greasy fleece weight were 0·22, 0·45, 0·41,0·45 and 0·29 respectively. Genetic and phenotypic correlations between birth, weaning and yearling weights were all positive and significant. Genetic correlations between fleece weight and body characteristics were negative and low.

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.

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