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. 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.

The comparative productivity of five ewe breeds. 4. Growth and carcase characteristics of purebred and crossbred lambs

1981 ◽  
Vol 21 (109) ◽  
pp. 172 ◽  
Author(s):  
KD Atkins ◽  
AR Gilmour
Keyword(s):  
Growth Rate ◽  
Growth Rates ◽  
Agricultural Research ◽  
The Other ◽  
Research Station ◽  
Agricultural Research Station ◽  
Breed Differences ◽  
Total Productivity ◽  
Economic Comparison ◽  
Australian Merino

The growth to slaughter and carcase characteristics of purebred and crossbred lambs from five ewe breeds were compared in an experiment in 1971 and 1972 at Temora Agricultural Research Station. The ewe breeds were a Border Leicester x Merino fixed halfbred (BLM), Corriedale, Polwarth, a South Australian strong wool (SA Merino) and a medium wool Peppin strain of Merino. In each year, ewes of each breed were joined either to their own breed of ram or to Dorset Horn rams. The analysis used tested whether differences between ewe breeds in crossbred performance were halved compared with the differences between ewe breeds in purebred performances. The results supported this hypothesis for all characters measured. The largest breed effects on lamb performance were found for growth rate. Compared with the overall mean, the growth rates to weaning for purebred lambs were 118%,102%, 90%, 99% and 91% 10 for the BLM, Corriedale, Polwarth, SA Merino and Peppin Merino, respectively. The deviations from 100% for crossbred lambs were halved. Differences between breeds for carcase traits were estimated at the same carcase weight. South Australian Merino lambs had a lower dressing percentage than lambs from .the other breeds. Polwarths had the greatest depth of fat at the 12- 13th rib. Skins from Merino lambs had shorter staples and higher visual counts than skins from the other breeds. However, it was concluded that breed differences in carcase and skin characters, independent of carcase weight, were of little value in an economic comparison of the breeds for total productivity.

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.

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 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.

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.

Effects of weaner nutrition on sire and flock rankings: a re-analysis of historical data

2009 ◽  
Vol 49 (12) ◽  
pp. 1100
Author(s):  
B. J. McGuirk
Keyword(s):  
Growth Response ◽  
Historical Data ◽  
Scale Type ◽  
Genetic Merit ◽  
Wool Production ◽  
Log Transformation ◽  
Wool Growth ◽  
Nutritional Effects ◽  
The 1950S ◽  
Fleece Weight

Early work in the 1950s on the wool growth response of sheep from diverse genotypes for wool production in response to varying planes of nutrition at pasture did not show the significant genotype × environment interactions exhibited in later pen studies with the same or very similar genotypes. However, this early study used a log-transformation on all traits to adjust nutritional effects for scale. Re-analysis of the original (i.e. untransformed) data shows that superior genetic merit for clean fleece weight, different sire progeny groups or selection flocks is more apparent when hogget ewes are fed a high plane of nutrition at pasture. However, only in the case of flocks was the interaction statistically significant, and this interaction was insignificant when data were either log-transformed, or when an appropriate test that accounts for scale-type effects was applied. When left untransformed, the data are, thus, in agreement with the subsequent pen studies that examined data on untransformed clean wool production.

Stimulation of wool growth by thyroxine implantation. I. Liveweight changes and wool growth of fine-wool Merino wethers

1964 ◽  
Vol 15 (4) ◽  
pp. 657 ◽  
Author(s):  
LJ Lambourne
Keyword(s):  
Dose Rate ◽  
Fibre Length ◽  
Dual Purpose ◽  
Wool Production ◽  
Wool Growth ◽  
Body Tissues ◽  
Four Seasons ◽  
Lower Body Weight ◽  
Native Pastures ◽  
Fleece Weight

Groups of 20 and 30 fine-wool Merino wethers were treated with L-thyroxine and their subsequent liveweight changes and wool production studied under a variety of grazing conditions for a year. Treatments comprised : (1) Single implantations of 60 mg in autumn, winter, spring, or summer. (2) Repeated implantations at all four seasons of 30, 60, or 90 mg. (3) Weekly subcutaneous injection of 7 mg in aqueous solution. These groups were grazed with untreated wethers on improved native pastures at one to two sheep per acre. (4) Repeated 60 mg implantations at four seasons in wethers grazed on native pasture providing a lower level of nutrition. (5) Repeated 60 mg implantations at four seasons in wethers grazed on sown pasture providing a higher level of nutrition. After every implantation there was a loss of 5–10 lb liveweight — more pronounced and more prolonged in the wethers given greater amounts of thyroxine, and more prolonged in those at lower levels of nutrition. Deaths occurred in several groups, increasing with dose rate or with poorer nutrition up to 30–50% of the group. Wool growth was not increased significantly by repeated 60 mg implants at the lowest level of nutrition, nor by the single 60 mg implant in late spring. Increases of 34% in annual fleece weight resulted from 60 mg implants in autumn and summer. Repeated implantation of 30, 60, and 90 mg in groups on a medium or high plane of nutrition increased annual fleece weight by 8, 14, and 19%, and 7 mg injected weekly by 11%. Increases in fleece weight were due partly to increased fibre length, and partly to an increase in grease and suint which reduced the clean scoured yield by 1–2%. It is concluded that line-wool Merinos, despite their lower body weight and greater specialization for wool production, react to thyroxine treatment in the same way as has been established for "dual-purpose" sheep. The safe maximum dose rate is critically dependent on the current level of nutrition, particularly for young sheep. Repeated implantations without adequate opportunity for recovery of catabolized body tissues may produce no increase in wool growth and may cause death.

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