Breeding

1940 ◽  
Vol 13 (1-2) ◽  
pp. 11-26
Keyword(s):  
Egg Production ◽  
Farming Practice ◽  
Average Production ◽  
Artificial Illumination ◽  
One Year

The Results of Artificial Lights in Winter. IV. Die Folgen intensiver Winterbeleuchtung von Zuchthühnern auf die Eierleistung und auf den Ablauf der Brut. Dr. Bartsch. Archiv für Geflügelkunde, 1939, Nos. 10, 11.Summary:III. The experiment about the effect of artificial illumination upon breeders having been finished the progeny of the illuminated birds (pen I) and the birds not illuminated (pen II) was in the course of one year tested as to egg production and condition of health while being managed according to usual farming practice. No difference between the two groups could be established. In twelve months the pullets of the first group had an average production of 181·6 eggs, the pullets of the second group 180·0 eggs. The losses were 6·1 per cent. and 9·4 per cent. respectively. 41·9 per cent. of the birds of the first and 41·7 per cent. of the birds of the second group were kept for another laying year. No detrimental effects of the artificial illumination of the mothers could be noticed in their progeny.

Breeding

1937 ◽  
Vol 10 (4) ◽  
pp. 247-258 ◽  
Keyword(s):  
Egg Production ◽  
Average Weight ◽  
List Type ◽  
Type Number ◽  
White Leghorn ◽  
Egg Weight ◽  
Average Production ◽  
The Way

1.The connection between the rate of maturity (number of days between birth and production of the first egg) and egg production of 938 White Leghorn pullets, hatched and reared on the Experimental farm of the Oliefabrieken Calvé-Delft was investigated. The pullets were of various strains and received widely differing treatment as regards feeding.2.There is a curvilinear correlation between rate of maturity and to talproduction and also between rate of maturity and winter production. It is, therefore, not correct to calculate with rectilinear correlations or regressions.3.The conditions, obtaining during the rearing, influence not only the rate of maturity, but also the connection between the rate of maturity and egg production.4.It is, therefore, impossible to state any generally acceptable rules concerning the way in which the existing connection can be used to raise the average production by the elimination of certain birds.5.Even when the pullets have been carefully culled either before or at the commencement of production, it is possible to raise the average production still further by eliminating those birds, which come into production last. A considerable number of bad producers are found among the birds with the slowest rate of maturity.6.No connection was found between rate of maturity and mortality.7.Neither was there any connection between rate of nlaturity and the average weight of the eggs produced after December.8.For the 514 birds which began production after 30th September, 1935, a rectilinear correlation of +0.66±0.02 was found between rate of maturity and the average weight of the first ten eggs produced. The regression-eo-efficient of this “inception egg-weight” to rate of maturity in +0.16±0.02.

scholarly journals Penggunaan Tepung Limbah Udang sebagai Bahan Pakan Sumber Protein terhadap Performa Produksi Puyuh Fase Layer (Coturnix-coturnix japonica)

2018 ◽  
Vol 5 (2) ◽  
pp. 31
Author(s):  
Hamdan Has ◽  
Astriana Napirah ◽  
Widhi Kurniawan ◽  
Natsir Sandiah
Keyword(s):  
Egg Production ◽  
Production Performance ◽  
Feed Consumption ◽  
Shrimp Waste ◽  
Feed Conversion ◽  
Treatment Unit ◽  
Egg Weight ◽  
Randomized Design ◽  
Average Production ◽  
Laying Quail

ABSTRAKLimbah udang merupakan limbah pengolahan udang yang memiliki potensi sebagai pakan sumber protein bagi ternak puyuh. Penelitian ini bertujuan mengkaji penggunaan tepung limbah udang (TLU) sebagai sumber protein pakan pada puyuh fase layer. Penelitian ini menggunakan rancangan acak lengkap empat perlakuan lima ulangan perlakuan yang digunakan terdiri dari empat level penggunaan tepung limbah udang dalam ransum yaitu P0 (kontrol), P1 (5% TLU), P2 (7,5% TLU) dan P3 (10% TLU), tiap unit perlakuan disi dengan 5 ekor puyuh. Puyuh yang diguanakan adalah puyuh fase layer umur 20 minggu, sebanyak 100 ekor yang didistribusikan kedalam 20 unit percobaan. Bahan pakan yang digunakan adalah jagung, dedak padi, konsentrat petelur dan tepung limbah udang. Data yang diperoleh dianalisis ragam dan data yang berbeda nyata (P<0,05) diuji lanjut menggunakan uji duncan. Variabel yang diamati adalah performa produksi: konsumsi pakan, produksi telur, bobot telur dan konversi ransum. Hasil penelitian menunjukkan bahwa penggunaan TLU dalam ransum (P1,P2 dan P3) menunjukkan pengaruh nyata (P<0,05) dibanding kontrol pada minggu ke-tiga penelitian terhadap bobot telur dan konversi ransum, penggunaan TLU (P1,P2,P3) selama lima minggu meningkatkan konsumsi ransum (P<0,05) dibanding kontrol tetapi tidak berbeda nyata (P>0,05) terhadap produksi telur, bobot telur dan konversi ransum. Kesimpulan penelitian ini bahwa penggunaan TLU dalam ransum dapat digunakan hingga level 7,5% sedangkan level 10% menunjukkan adanya penurunan rata-rata performa produksi.Kata kunci: tepung limbah udang, puyuh fase layer, performa produksiABSTRACTShrimp waste was shrimp processing waste which has the potential as protein source for quail feed. This study was aimed to examine the use of shrimp waste flour (SWF) asprotein source for laying quail feed. This study used  completely randomized design that consist of four treatments and five replications.The treatmentswere using levels of shrimp waste flour in feed and consist of P0 (control), P1 (5% SWF), P2 (7.5% SWF) and P3 (10% SWF ). Each treatment unit was filled with 5 quails. One hundred of 20 weeks laying quails were used in this study. Self mixing feed that contained corn, rice bran, laying concentrate and shrimp waste flour were used in this study. The data obtained were analyzed using analyze of variance and continued using Duncan multiple range test. The variables observed were production performance that consist of feed consumption, egg production, egg weight and feed conversionratio. The results showed that the use of SWF in feed (P1, P2 and P3) showed a significant effect (P <0.05) compared to controls in the third week of research on egg weight and feed conversion ratio.The use of SWF (P1, P2, P3) for five weeks increased feed consumption (P <0.05) compared to controls but not significantly different (P>0.05) for egg production, egg weight and feed conversion. The conclusion of this study was the use of SWF in feed can be used until 7.5% on laying quail feed while the level of 10% indicates a decrease in average production performance.Keywords: shrimp waste flour, laying quail, production performance

Restructuring the Tasmanian rock-lobster fishery - the effect of two years of management under individual transferable quotas

2001 ◽  
Vol 52 (8) ◽  
pp. 1641 ◽  
Author(s):  
Wes Ford ◽  
Wes Ford
Keyword(s):  
Egg Production ◽  
Fishing Effort ◽  
Rock Lobster ◽  
Quota System ◽  
Individual Transferable Quotas ◽  
Fishing Vessels ◽  
Early Results ◽  
Lobster Fishery ◽  
Quota Management ◽  
One Year

Individual transferable quotas were successfully introduced into the Tasmanian rock-lobster fishery in 1998. In the two years since, significant industry restructuring has occurred. The move to quota management was intended to meet two key objectives: to reduce the catch to a sustainable level, allowing the stock to rebuild, and to provide a mechanism whereby the industry could achieve economic sustainability. The quota system has achieved early results on both the sustainability and restructuring objectives and is now well accepted and supported by the vast majority of fishers and licence holders. Its effect has been to reduce fishing effort by 29% and number of fishing vessels by 23%, and the reduction in catch has resulted in a 6% increase in the estimated biomass and substantial increases in egg production after one year. Fishers now spend fewer days at sea, and catch rates are improving. These changes are reducing fishing costs, which in time should increase profitability. Social costs of introducing quotas are that fewer fishers are employed on vessels and that fishers now find it harder and more expensive to lease a fishing licence. These costs must be factored into any assessment of the industry.

XI.—An Investigation into the Effects of Seasonal Changes on Body Temperature

1913 ◽  
Vol 32 ◽  
pp. 110-135 ◽  
Author(s):  
Sutherland Simpson
Keyword(s):  
Body Temperature ◽  
Rectal Temperature ◽  
Egg Production ◽  
Weather Conditions ◽  
Barometric Pressure ◽  
Temperature Curve ◽  
The Body ◽  
The Mean ◽  
One Year ◽  
June July

SummaryMonthly observations, extending over one year, were made on the rectal temperature of 114 domestic fowls (Gallus gallus, ♀) and records from forty-one of these were obtained for two years. Six different breeds were used, each located in a separate pen, all under similar conditions, and the mean temperatures for each group were plotted out to form an annual temperature curve. It was found that—1. The lowest temperatures occur in December, January, and February, and the highest in June, July, and August, corresponding in a general way with the temperature of the external air.2. Barometric pressure does not appear to have any influence on the body temperature of the hen.3. The curve of egg-production does not coincide with the annual temperature curve, the former reaching its highest level in April and May, the latter in June, July, and August.If we compare the mean rectal temperature at two periods of the year when the external or weather conditions are approximately the same (April-May and September-October), but when the vitality of the birds, as indicated by the curve of egg-production, moulting, etc., is at a maximum and minimum respectively, we find that the figures are practically identical. This would seem to show that cyclical bodily changes have little effect on body temperature as compared with outside influences.

Research on the Characteristics of Start up and Operation of Treating Brewery Wastewater with an AFB Reactor at Ambient Temperatures

1993 ◽  
Vol 28 (7) ◽  
pp. 187-195 ◽  
Author(s):  
Liang Yongming ◽  
Qian Yi ◽  
Hu Jicui
Keyword(s):  
Removal Rate ◽  
Operating Conditions ◽  
Brewery Wastewater ◽  
Ambient Temperatures ◽  
Operational Characteristics ◽  
Start Up ◽  
Stable Operating ◽  
Average Production ◽  
Cod Removal Rate ◽  
One Year

The purpose of this study was to evaluate the efficiency and feasibility of treating brewery wastewater with an Anaerobic Fluidized Bed(AFB) reactor at ambient temperatures of about 25°C. Results from nearly one year of tests have demonstrated that the reactor has a volumetric loadings rate of 27-30kgCOD/m3.d with 2.5 h of hydraulic retention time (HRT). The COD removal rate can reach 85% or more under stable operating conditions. The average production rate of biogas was 0.45m3/kgCOD removed, of which the CH4 content was 72%. In addition, the formation mechanism of the biofilm was analyzed, the measures of rapid start up of the reactor was investigated. The operational characteristics of the AFB reactor were also discussed.

scholarly journals Genetic parameters for egg production in meat quails through partial periods

2017 ◽  
Vol 47 (4) ◽  
Author(s):  
Jeferson Corrêa Ribeiro ◽  
◽  
Luciano Pinheiro da Silva ◽  
Aline Camporez Crispim Soares ◽  
Giovani da Costa Caetano ◽  
...  
Keyword(s):  
Egg Production ◽  
Genetic Parameters ◽  
Egg Laying ◽  
Production Data ◽  
Partial Period ◽  
Covariance Components ◽  
One Year ◽  
Production Period ◽  
Second Period ◽  
Meat Type

ABSTRACT: We estimated genetic and phenotypic parameters for egg production in meat-type quails aiming to propose an optimal age for selection through partial record egg production. Data of 3,503 female quails from two strains (namely, UFV1, with 1,811 and UFV2 with 1,692 females) were used. Egg production was assessed by the number of eggs recorded after 42 days of age and each partial period consisted on 35 days of egg production forward. Covariance components were estimated by using single and bivariate animal model, comprising each partial period of egg production and full egg production period (one year of egg laying). Regarding strain UFV1, heritability estimates ranges from 0.03 to 0.16, and for strain UFV2 0.20 to 0.25. The highest genetic correlation with full egg production was with second period (0.64) for strain UFV1 and with third period (0.47) for UFV2. Therefore, animal selection based on egg production until 112 days for the strain UFV1 and 147 days for the strain UFV2 provided increased genetic gain by reducing generation interval.

Breeding

1928 ◽  
Vol 1 (4) ◽  
pp. 37-41
Keyword(s):  
British Columbia ◽  
Egg Production ◽  
First Year ◽  
University Of British Columbia ◽  
Average Production ◽  
Scientific Agriculture ◽  
The Mean

The First Year Egg Production of Barred Plymouth Rocks by V. S. Asmundson, University of British Columbia, Vancouver. Scientific Agriculture, Vol. IX., No. 2, 1928.In this study of 569 records of first year production it was found that average production had increased by nearly twenty eggs or from 187 eggs in 1920–21 to 206 in 1925–26. The mean annual egg production of the 569 birds was 198 eggs which was practically identical with the average for Barred Rock pullets entered in the British Columbia contests.

scholarly journals KUALIFIKASI MANAJERIAL TEKNIS PRODUKSI TELUR PERUSAHAAN UD. FITRA ABADI, KECAMATAN LEIHITU, KABUPATEN MALUKU TENGAH

2019 ◽  
Vol 7 (1) ◽  
pp. 34-41
Author(s):  
Adolf Heatubun ◽  
Michel J Matatula ◽  
Marcus Veerman ◽  
Heriyanus Jesayas
Keyword(s):  
Egg Production ◽  
Production Efficiency ◽  
Laying Hens ◽  
Egg Laying ◽  
Survey Method ◽  
Managerial Ability ◽  
Technical Indicators ◽  
Marginal Production ◽  
Average Production ◽  
Successful Production

The technical managerial ability to produce eggs from farmers and farm company managers is an indicator of how well businesses organize successful production and business activities. This study aims to determine the technical indicators of production efficiency in the laying hens company UD. Fitra Abadi. The study used a survey method, the location was selected purposively, and the study lasted 31 days in October 2018. The sample used was one cage block with 2,100 hens laying hens. The results showed the laying hens, UD. Fitra Abadi applies a technology package that is lower in capacity by mixing shop food (35%), corn feed (45%), and bran feed (20%). Egg production produced an average of 1,738 eggs per day (82.76% of 2,100 chickens) is below the best capacity of the peak egg-laying period of 95%. Technical indicators of production show the average production of eggs per kg of food 6.43 eggs, marginal production of -0.3 eggs, and elasticity of -0.047. The efficiency of the company's production becomes negative, and the company operates in a loss phase.

Observations on the Seasonal Variations in the Worm Burdens of Young Sheep in Southern Western Australia

1962 ◽  
Vol 36 (1-2) ◽  
pp. 161-188 ◽  
Author(s):  
I. W. Parnell
Keyword(s):  
United Kingdom ◽  
Western Australia ◽  
Seasonal Variations ◽  
Egg Production ◽  
Infective Larvae ◽  
The United Kingdom ◽  
One Year

Observations, limited to one year, on autumn born and spring born lambs and weaners indicated that very few infective larvae of bursate nematodes, with the exception of those of Nematodims spp., were ingested after the middle of spring, with the result that at least until they were eight months old, and probably older, spring born lambs were comparatively lightly infested.These observations also suggested that retarded larvae, especially the histotropic stages, are the cause of the “summer rise” in weaners and that they also cause the “parturition rise” in autumn lambing ewes, and can be the cause of increased worm egg production in wethers.It seems probable that the “summer rise” of sheep in the southern part of Western Australia is comparable to the “spring rise” of sheep in the United Kingdom and elsewhere.

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