scholarly journals The Efficiency of Carotene as Supplied by Alfalfa Meal in Meeting the Vitamin A Requirements of Laying Hens

1939 ◽  
Vol 18 (4) ◽  
pp. 268-275 ◽  
Author(s):  
J.K. Williams ◽  
C.E. Lampman ◽  
D.W. Bolin
Keyword(s):  
Vitamin A ◽  
Laying Hens ◽  
Alfalfa Meal

scholarly journals Effects of dietary levels of vitamin A on the egg yield and immune responses of laying hens

1998 ◽  
Vol 77 (4) ◽  
pp. 542-546 ◽  
Author(s):  
B Coskun ◽  
F Inal ◽  
I Celik ◽  
O Erganis ◽  
AM Tiftik ◽  
...  
Keyword(s):  
Vitamin A ◽  
Immune Responses ◽  
Laying Hens

Nutrition

1937 ◽  
Vol 10 (1-2) ◽  
pp. 38-88
Keyword(s):  
New Jersey ◽  
Vitamin A ◽  
Egg Production ◽  
Live Weight ◽  
Weight Changes ◽  
Percentage Mortality ◽  
Yellow Corn ◽  
Alfalfa Meal ◽  
Basal Ration

The vitamin A requirements of the laying pullet. W. C. Russell, C. S. Platt, M.W. Taylor, and D. F. Chichester. New Jersey Stas. Circ. 369, 1936.In the experiments herein reported seven pens of healthy pullets reared on range were started on experiment late in August and continued under confinement for a 12-mo. period. All lots received essentially the same basal ration, but the proportions of yellow corn and white corn and the supplements of alfalfa meal, vitamin A concentrate, and fresh green feed were varied so that the U. S. P. units of vitamin A per pound of feed were 400, 700, 1,300, 2,200, 3,800, 4,100, and 30,000 for lots 1 to 7, respectively. Data are reported on the percentage mortality, live weight changes, egg production, hatchability of eggs, mortality of chicks during the first 2 weeks of life, and vitamin A storage in the livers of the hens.

scholarly journals Effect of Diets Containing Grass Meal and Alfalfa Meal on the Content of Carotenoids, Vitamin A and Vitamin E in the Egg Yolk and Selected Reproduction Parameters in Geese

2010 ◽  
Vol 37 (2) ◽  
pp. 191-195 ◽  
Author(s):  
Helena Puchajda-Skowrońska ◽  
Danuta Strusińska ◽  
Ewa Trojanowska ◽  
Krzysztof Kozlowski
Keyword(s):  
Vitamin E ◽  
Vitamin A ◽  
Egg Yolk ◽  
Alfalfa Meal

scholarly journals Vitamin A Requirements of Laying Hens

1939 ◽  
Vol 18 (2) ◽  
pp. 129-137 ◽  
Author(s):  
H.J. Almquist ◽  
E. Mecchi
Keyword(s):  
Vitamin A ◽  
Laying Hens

scholarly journals Effects of supplementing various linoleic to α-linolenic acid ratios and vitamin A on production performance and egg characteristics of laying hens during summer months

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Muhammad Naeem Tahir
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Vitamin A ◽  
Linolenic Acid ◽  
Feed Intake ◽  
Egg Production ◽  
Laying Hens ◽  
Body Weight Gain ◽  
Production Performance ◽  
Dietary Treatments

In the present feeding trial, responses of laying hens, kept at high ambient temperature, to various dietary ratios of linoleic acid (LNA) to α-linolenic acid (ALA) and vitamin A levels on performance and egg characteristics were evaluated. A total of 360, 40-wk-old, Leghorn laying hens were fed on diets with various combinations of canola oil and linseed oil to achieve LNA to ALA dietary ratios of 20:1, 10:1, 4:1, 2:1, 1:1 and 1:2, each supplemented with 3000 IU or 10000 IU vitamin A/kg of diet. The diets were fed in a 6×2 factorial Completely Randomized Design that continued for 12 weeks. Feed intake, weight gain, egg production and egg quality traits were recorded during the trial. Decreasing dietary LNA to ALA ratio in the diet affected negatively (P<0.05) on body weight gain and yolk percentage in laying hens. While, feed intake, hen-day and hen-housed egg production, feed conversion ratio (FCR) per dozen of eggs and shell quality remained unaffected (P>0.05) by dietary treatments, with the exception of FCR per kg eggs, egg weight and egg-shell thickness which responded significantly (P<0.05) to various dietary treatments. Although the dietary ratio of LNA to ALA of 4:1 or less could produce eggs by the hens with desirable quantities of n-6 and n-3 poly unsaturated fatty acids – that are characteristics of functional diets – the performance of laying hens in terms of body weight gain and egg-yolk percentage was slightly compromised.

scholarly journals Incubation qualities of the eggs of the laying hens of the parent herd when using probiotics in the diet

2020 ◽  
Vol 176 ◽  
pp. 01012
Author(s):  
Alexander Ovchinnikov ◽  
Lyudmila Ovchinnikov ◽  
Yulia Matrosov ◽  
Dmitry Bryukhanov ◽  
Alexei Belookov
Keyword(s):  
Vitamin A ◽  
Laying Hens ◽  
Food Products ◽  
The Body ◽  
Metabolic Processes ◽  
Egg Incubation ◽  
The Cost

Occasional use of the probiotics Levisel SB Plus and Tsellobacterin – T in a dose 0.50 kg/t of the mixed fodder in a diet of the laying hens at the age 21-26, 34-39 и 45-48 weeks has increased metabolic processes in the body of a bird and productivity of the laying hens in a group with Levisel SB Plus by 10.6 %, with a dash Tsellobacterin – T – by 16.1 %, but it did not affect the weight of the egg during all periods of the productive cycle. The egg incubation results showed that probiotice Levisel SB Plus increased egg hatability by 4.1%, Tsellobacterin-T by 6.2%, their fertilization by 2.1 and 4.2%, the withdrawal of young chickens by 3.5% and 5.1%. The addition of probiotics did not change the hatchability of eggs (93.22 and 93.17%) in these groups, but reduced the amount of unfertilized eggs by 1.8 and 10.3%. There was a higher content of carotenoids and vitamin A in the eggs of the laying hens and in the body of daily chickens. Using the probiotics in the diet of laying hens of the parent herd has reduced the cost of feeding for 10 eggs by 8.2-8.5% , with a dash of Levisel SB Plus by 15,0-15,4%, with a dash of Tsellobacterin – T to the weight of the egg by 1,8-9,7% and 15.3-15.5% respectively. At the same time, the payment of food products increased in the group using Levisel SB Plus by 10.3-10.7%, with Tsellobacterine - T by 20.9- 21.7%, the profitability of production increased by 13.1 and 22.3%.

Levels of Supplemental Vitamin A with and without Sun-Cured Alfalfa Meal for Fattening Steer Calves

1962 ◽  
Vol 21 (2) ◽  
pp. 333-339 ◽  
Author(s):  
T. W. Perry ◽  
W. M. Beeson ◽  
M. T. Mohler ◽  
W. H. Smith
Keyword(s):  
Vitamin A ◽  
Supplemental Vitamin ◽  
Alfalfa Meal
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