Effect of restricting the energy intake of the laying hen, directly and by dilution of the diet, on egg production and the efficiency of energy utilisation

1972 ◽  
Vol 23 (4) ◽  
pp. 413-428 ◽  
Author(s):  
N. Jackson
Keyword(s):  
Energy Intake ◽  
Egg Production ◽  
Laying Hen

scholarly journals The Effects of Short Term Feeding of Aflatoxin on Egg Production and Some Plasma Constituents of the Laying Hen ,

1973 ◽  
Vol 52 (6) ◽  
pp. 2206-2211 ◽  
Author(s):  
J.D. Garlich ◽  
Hsi-Tang Tung ◽  
P.B. Hamilton
Keyword(s):  
Egg Production ◽  
Laying Hen ◽  
Short Term

Duckweed as a Feed Ingredient in Laying Hen Diets and its Effect on Egg Production and Composition

2010 ◽  
Vol 10 (1) ◽  
pp. 4-7 ◽  
Author(s):  
K.E. Anderson ◽  
Z. Lowman ◽  
Anne-Marie Stomp ◽  
Jay Chang
Keyword(s):  
Egg Production ◽  
Laying Hen ◽  
Feed Ingredient

scholarly journals Feather Pecking and Cannibalism in Non-Beak-Trimmed Laying Hen Flocks—Farmers’ Perspectives

Animals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 43 ◽  
Author(s):  
Eija Kaukonen ◽  
Anna Valros
Keyword(s):  
Risk Factors ◽  
Drinking Water ◽  
Egg Production ◽  
Laying Hen ◽  
Economic Losses ◽  
Online Questionnaire ◽  
Negative Attitudes ◽  
Feather Pecking ◽  
Intervention Measures ◽  
Beak Trimming

Pecking-related problems are common in intensive egg production, compromising hen welfare, causing farmers economic losses and negatively affecting sustainability. These problems are often controlled by beak trimming, which in Finland is prohibited. An online questionnaire aimed to collect information from farmers about pecking-related problems in Finnish laying hen flocks, important risk factors and the best experiences to prevent the problems. Additionally, the farmers’ attitudes towards beak trimming were examined. We received 35 responses, which represents about 13% of all Finnish laying hen farms with ≥300 laying hens. The majority of respondents stated that a maximum of 5–7% incidence of feather pecking or 1–2% incidence of cannibalism would be tolerable. The majority of respondents (74%) expressed that they would definitely not use beak-trimmed hens. Only two respondents indicated that they would probably use beak-trimmed hens were the practice permitted. Among risk factors, light intensity earned the highest mean (6.3), on a scale from 1 (not important) to 7 (extremely important). Other important problems included those that occurred during rearing, feeding, flock management and problems with drinking water equipment (mean 5.9, each). The most important intervention measures included optimal lighting and feeding, flock management, and removing the pecker and victim. Concluding, Finnish farmers had strong negative attitudes towards beak trimming. The study underlines the importance of flock management, especially lighting and feeding, in preventing pecking problems and indicates that it is possible to incorporate a non-beak-trimming policy into sustainable egg production.

Energy utilization in the laying hen in relation to ambient temperature

1973 ◽  
Vol 81 (1) ◽  
pp. 173-177 ◽  
Author(s):  
R. H. Davis ◽  
O. E. M. Hassan ◽  
A. H. Sykes
Keyword(s):  
Ambient Temperature ◽  
Energy Intake ◽  
Heat Production ◽  
Egg Production ◽  
Energy Utilization ◽  
Ambient Temperatures ◽  
Thermoneutral Zone ◽  
Energy Retention ◽  
The Difference ◽  
Energy Balances

SummaryEnergy balances have been determined, using the comparative slaughter procedure, over 3-week periods on groups of laying hens kept at ambient temperatures of 7·2, 15·6, 23·9, 29·4 and 35 °C.Energy intake declined as the environment became warmer (kcal ME/kg¾/day = 203· 1·13°C); heat production, as measured by the difference between energy intake and energy retention, also declined with increasing ambient temperature (kcal/kg¾/day = 151 – 1·11°C). There was a linear relationship between heat production and ambient temperature with no thermoneutral zone or critical temperature.The energy available for egg production remained almost constant at 50 kcal/kg¾/day equivalent to a rate of egg production of 82% at each ambient temperature.

Control of Energy Balance during Egg Production in the Laying Hen

1987 ◽  
Vol 117 (3) ◽  
pp. 605-611 ◽  
Author(s):  
Colin G. Scanes ◽  
Robert Campbell ◽  
Paul Griminger
Keyword(s):  
Energy Balance ◽  
Egg Production ◽  
Laying Hen

scholarly journals Effect of yeast cell wall supplementation in laying hen feed on economic viability, egg production, and egg quality

2018 ◽  
Vol 27 (1) ◽  
pp. 116-123 ◽  
Author(s):  
N.T.G. Koiyama ◽  
N.B.P. Utimi ◽  
B.R.L. Santos ◽  
M.A. Bonato ◽  
R. Barbalho ◽  
...  
Keyword(s):  
Cell Wall ◽  
Yeast Cell ◽  
Egg Production ◽  
Egg Quality ◽  
Laying Hen ◽  
Yeast Cell Wall ◽  
Economic Viability

scholarly journals Concentrates Made from Legume Seeds (Lupinus Angustifolius, Lupinus Luteus and Pisum Sativum) and Rapeseed Meal as Protein Sources in Laying Hen Diets

2015 ◽  
Vol 15 (1) ◽  
pp. 129-142 ◽  
Author(s):  
Andrzej Rutkowski ◽  
Sebastian A. Kaczmarek ◽  
Marcin Hejdysz ◽  
Sebastian Nowaczewski ◽  
Dorota Jamroz
Keyword(s):  
Soybean Meal ◽  
Feed Intake ◽  
Egg Production ◽  
Rapeseed Meal ◽  
Laying Hen ◽  
The Body ◽  
Lupinus Luteus ◽  
Egg Weight ◽  
Protein Concentrates ◽  
Legume Seeds

Abstract The aim of the study was to determine the usefulness of two protein concentrates composed of rapeseed meal and new cultivars of narrow-leaved and yellow lupine, peas in laying hen diets and their influence on birds’ performance and egg characteristics. The experiment was conducted with 180 layers kept in individual cages. The birds were randomly assigned to three treatments, with 60 hens in each and during the period of 17 weeks, they were fed diets: I - containing soybean meal as a protein source, II - containing protein concentrates composed of mixture of lupines, peas (19.48% of diet) and rapeseed meal, III - containing protein concentrates composed of a mixture of lupines and peas (27.68% of diet). The body weight, laying rate, egg weight, feed intake and feed conversion ratio (FCR) and egg characteristics were registered. After 9 weeks of experiment, a decrease of laying rate was recorded in treatment III. The mean value of laying rate for 17 weeks amounted to 82.7 (I), 82.5 (II) and 75.9% (III) (P<0.01). The egg weight was diversified already after 4 weeks of egg production and averaged 57.9 (I), 55.9 (II) and 54.9 g (III) (P<0.05). Feed intake amounted to 108 (I), 111 (II) and 104 g per hen/day (III), and FCR was 2.05, 3.17 and 2.23 kg/kg egg weight, respectively. As to egg characteristics, increases of white index (P<0.05), Haugh unit score and yolk colour in treatment III were observed but egg shell thickness was found significantly reduced. In conclusion, the use of about 27.68% of legume seed in laying hen diet affected negatively performance results but about 19.48% of these seeds and 8% rapeseed meal in diets could be accepted as a soybean meal substitute.

scholarly journals Impact of commercial housing systems and nutrient and energy intake on laying hen performance and egg quality parameters

2015 ◽  
Vol 94 (3) ◽  
pp. 485-501 ◽  
Author(s):  
D.M. Karcher ◽  
D.R. Jones ◽  
Z. Abdo ◽  
Y. Zhao ◽  
T.A. Shepherd ◽  
...  
Keyword(s):  
Energy Intake ◽  
Egg Quality ◽  
Quality Parameters ◽  
Laying Hen ◽  
Housing Systems ◽  
Commercial Housing

scholarly journals Сучасний генофонд курей України

2018 ◽  
pp. 115-121
Author(s):  
С. Л. Войтенко ◽  
О. О. Васильєва
Keyword(s):  
Egg Production ◽  
Laying Hen ◽  
Second Order ◽  
The State ◽  
Research Station ◽  
Poultry Industry ◽  
State Research ◽  
High Line ◽  
Breeding Farms ◽  
Poultry Farming

Подано аналіз стану галузі птахівництва (безпосередньою – курівництва) в племінних господарствах України. Визначено, що на початку 2018 року курей різного напряму продуктивності розводили в 14 племінних господарствах, але при цьому функціонувало лише два племінних заводи і 12 племінних птахо­племрепродукторів другого порядку. Наявне поголів’я птиці відносилося до порід бірківська барвиста та білий плімутрок, а також кросів Кобб-500, Росс-308, Ломанн, Ломан Браун – Лайт, Ломан ЛСЛ – Класік і Хай-Лайн W-36. Відсутність інформації про полтавську глинясту та адлерську сріблясту породи в Державному реєстрі суб’єктів племінної справи у тваринництві за 2017 рік можна розцінювати як зникнення стад, а отже, і порід в Україні. Надано коротку характеристику порід і кросів курей, їх продуктивність, а також діяльність у якості суб’єктів племінної справи в птахівництві. Доведено, що селекційна робота проводиться лише з бірківською барвистою породою та білим плімутроком, а решта птиці – це фінальний гібрид чи батьківські стада зарубіжних компаній. Встановлено повну залежність вітчизняного птахівництва від імпорту птиці, що ставить під загрозу безпеку країни. The article analyzes the state of the poultry industry, directly – chickens, in breeding farms of Ukraine. It was determined that in the beginning of 2018, chickens of different productivity directions were bred in 14 breeding farms, but only two breeding plants and 12 breeding second-order breeding poultry workers were employed. The existing livestock of the bird referred to the breeds of Birkiv colored and white plimutrok, as well as crossbows Cobb-500, Ross-308, Lohmann, Lohman Brown-Light, Lohmann LSL-Classic and High-Line W-36. The lack of information on Poltava clay and Adler silver rocks in the State Register of breeding subjects in livestock production in 2017 can be considered as the disappearance of herds, and consequently, of rocks in Ukraine. The Birkiv colorful chicken breed of the egg production line, which was created by the scientists of the Institute of Poultry Farming of Ukrainian Academy of Agrarian Sciences through the complex reproductive crossbreeding of white and colored chickens of domestic breeding, is now breeding only in one breeding plant of State Research Station of Poultry Industry of National Academy of Agrarian Sciences. The average number of hens of this breed, which is kept only in one tribal plant of Kharkiv region, as of 01.01.2018 amounted to 0.7 thousand heads for the average carrying of one laying hen per year – 131 eggs.  In Ukraine, in early 2018, the white plimutrok breed of meat and egg production was breed only in one breeding plant of the State Research Station of National Academy of Agrarian Sciences in the amount of 0.7 thousand heads for the average carrying weight of one lozenge per year of 103 eggs. In Ukraine, the Ross-308 Cross in three breeding poultry producers of the second order with a total of 316.9 thousand heads and it is characterized by a low average bearing of one laying hen per year – 146 eggs. In early 2018, chicken Cross Cobb-500 farmers of the second order of Donets’k, Zaporizhzhia, Kyiv, Kharkiv and Cherkasy regions bred the bird of this cross in Ukraine for a total number of birds –2458 thousand heads. The average carrying weight of one laying hen per year is 228 eggs. In early 2018, the birds of Lohan Cross in Ukraine were bred only in the conditions of one second-rate poultry farm in Poltava region, with a total number of birds – 87.1 thousand heads. The average carrying weight of one laying hen per year is 267 eggs. Cross Lohmann LSL-Classic bird of this breed is breeding only in one breeding poultry farmer of the second order in Kyiv region. With a total livestock of chickens 47.2 thousand heads, the average bearing of one laying hen per year was 244 eggs. At the beginning of 2018, the High-Line W-36 line was kept only in one pedigree poultry producer of the second order in Kyiv region, with 57.7 thousand heads with an average bearing of one laying hen per year – 242 eggs. A brief description of breeds and cross-breeds of chickens, their productivity, as well as activities as breeding subjects in poultry farming is provided. It has been proved that selection work is carried out only with the Birkiv colored rock and white plimutrok, and the rest of the birds are the final hybrid or parent herds of foreign companies. The complete dependence of domestic poultry production on imports of poultry has been established, which endangers the country's security.

scholarly journals Genetic type and growth influence on the production characteristics of light line hen hybrids

2007 ◽  
Vol 23 (5-6-2) ◽  
pp. 357-364
Author(s):  
V. Rajicic ◽  
S. Mitrovic ◽  
S. Bogosavljevic-Boskovic ◽  
J. Milivojevic ◽  
M. Staletic ◽  
...  
Keyword(s):  
Food Consumption ◽  
Body Mass ◽  
Egg Production ◽  
Laying Hen ◽  
Mass Mortality ◽  
Egg Laying ◽  
Genetic Type ◽  
Light Line ◽  
Average Consumption ◽  
Production Characteristics

The aim of this work was parallel investigation of the producing characteristics of light line hen hybrids. Investigation enclosed two hen proveniences: Hisex Brown and Shawer 579. Within the period of 19 up to 63 weeks we followed next parameters: egg-laying hen body mass, mortality, food consumption and egg-laying capacity. Hens body mass on the beginning of the examination, within the 19 weeks of growth was, for Hisex Brown provenience 1607g, and for Shawer 579 provenience 1563g. Hisex Brown provenience achieved about 250 g higher body mass on the end of investigation. During the experiment, mortality at Hisex Brown egg-laying hen was a little bit smaller (5,40%), while the Shawer 579 had 5,56% of dead hens. Globally, the mortality at both hen hybrids was in the range of technological normative. The average consumption of the food at Hisex Brown provenience was higher and it was 127,28g, and at Shawer 579 provenience 125,14g. The average consumption of the nutrition for egg production at both provenience was the same (150g).

Sign in / Sign up

Export Citation Format

Share Document