scholarly journals Relationship of Yolk Cholesterol and Onset of Egg Production

1980 ◽  
Vol 59 (3) ◽  
pp. 666-668 ◽  
Author(s):  
CRAIG W. BAIR ◽  
WILLIAM W. MARION ◽  
DONALD K. HOTCHKISS
Keyword(s):  
Egg Production ◽  
Yolk Cholesterol ◽  
Relationship Of

Fecundity of the American Plaice, Hippoglossoides platessoides (Fabr.) from Grand Bank and Newfoundland Areas

1964 ◽  
Vol 21 (3) ◽  
pp. 597-612 ◽  
Author(s):  
T. K. Pitt
Keyword(s):  
Egg Production ◽  
Fish Length ◽  
Northern Slope ◽  
Southern Slope ◽  
Ovary Weight ◽  
Length Relationship ◽  
Relationship Of ◽  
Hippoglossoides Platessoides

Fecundity estimates were made on a total of 140 mature American plaice from the southern and northern slopes of the Grand Bank and from St. Mary's Bay. Log–log relationships were established between fecundity and fish length, gutted and gilled weight, age, and ovary weight. No differences were found to exist between the fecundity–length relationship of plaice from the three areas, but there is a suggestion that within areas there may be annual differences in egg production. At comparable ages plaice from the southern slope of the Grand Bank are larger in size and produce more eggs than those from the northern slope and St. Mary's Bay.

Effect of Water Extract of Two Leaves (Allium sativum and Sauropus androgynus) on Egg Production and Yolk Cholesterol Levels in Egg Laying Hens

2017 ◽  
Vol 16 (7) ◽  
pp. 482-487 ◽  
Author(s):  
I Gusti Nyoman Gde Bidura ◽  
Ida Bagus Gaga Partama ◽  
Budi Rahayu Tanama Putri ◽  
Ni Luh Watiniasih
Keyword(s):  
Egg Production ◽  
Allium Sativum ◽  
Laying Hens ◽  
Water Extract ◽  
Egg Laying ◽  
Effect Of Water ◽  
Cholesterol Levels ◽  
Yolk Cholesterol

scholarly journals The Relationship of Anatomical Measurements to Egg Production

1934 ◽  
Vol 13 (4) ◽  
pp. 242-249 ◽  
Author(s):  
M. Wayne Miller ◽  
J.S. Carver
Keyword(s):  
Egg Production ◽  
Relationship Of ◽  
The Relationship

scholarly journals Relationship of Rate of Thyroxine Secretion to Rate of Egg Production in the Domestic Fowl

1950 ◽  
Vol 29 (2) ◽  
pp. 240-243 ◽  
Author(s):  
E.E. Booker ◽  
Paul D. Sturkie
Keyword(s):  
Domestic Fowl ◽  
Egg Production ◽  
Relationship Of

scholarly journals Responses of domestic fowl to excess iodine: a review

2004 ◽  
Vol 91 (1) ◽  
pp. 29-39 ◽  
Author(s):  
P. D. Lewis
Keyword(s):  
Body Weight ◽  
Feed Intake ◽  
Egg Production ◽  
Cholesterol Concentration ◽  
Feed Conversion ◽  
Reproductive Disorders ◽  
Excess Iodine ◽  
High Concentrations ◽  
Poultry Diets ◽  
Yolk Cholesterol

Typically, poultry diets contain 1–2 mg I/kg, but higher concentrations are sometimes used to enhance the I content of eggs. In addition to an increased deposition of I in the yolk, other often adverse responses occur, especially at exceptionally high concentrations. Excess I in grower diets can prevent sexual maturation in male and female fowl, and in layer diets will progressively reduce egg production until, by about 2500 mg I/kg diet, ovulation is inhibited and egg production ceases. Most I accumulates in the thyroid gland, and it is likely that the mechanism responsible for these reproductive disorders involves a modification of thyroid hormone activity. Simultaneous with the declining rate of lay, feed intake declines, egg weight and yolk-cholesterol contents decrease and body weight increases. Whereas fertility is unaffected in female breeders, hatch of fertile eggs is reduced, hatch time extended and embryonic mortality and dead-in-shell proportions increased. In contrast, male fertility is decreased because of an increased incidence of dead spermatozoa, although hatchability of eggs from normally fed hens is unaffected. All reproductive variables, together with feed intake and body weight, are normalised within about 7 d of returning to a diet with normal I levels. Excess I suppresses growth in meat-type chickens, but does not affect feed conversion efficiency. There are transient increases in plasma I and cholesterol concentration during excess I intake in all types of bird. The evidence for varying responses to different I sources is equivocal, but the consensus is that source is probably not important.

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