Estrogen Sulfates in the Plasma of White Leghorn Laying Hens ,
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چکیده
منابع مشابه
The Histological Studies of Parathyroid' Gland in Laying White Leghorn Hens (Gallus domesticus) in Relation to the Serum Calcium Level
The parenchymal cells recorded were dark chief, 21.33%; intermediate, 73.46% and light chief, 5.20% and their dimensions (in microns) were, 17.30 ± 4.49, 19.98 ± 4.15 and 850 ± 8.49, respectively, and mean of serum calcium was 49.66 mg/100 ml.
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Prolactin is considered to influence the taking of pauses in between ovulatory sequences in White Leghorn hens. Therefore modulating concentrations of prolactin using bromocriptine a dopamine agonist during early life (17 to 36 weeks of age) could overcome the inhibitory effects of high concentration of prolactin on ovarian activity. The effect of modulation of prolactin concentration on egg pr...
متن کاملEffect of Different Levels of Dietary Crude Protein, Lysine and Methionine on Performance of White Leghorn Laying Hens
Objective: An experiment was conducted to study the effect of feeding of different levels of dietary crude protein (17.5, 16.5 and 15.5%) with varying levels of lysine (0.77, 0.73 and 0.68%) and methionine (0.36, 0.34 and 0.32%) on performance of white leghorn layers from 34-53 weeks of age. Methodology: Each diet was fed ad libitum to 12 replicates consisting of 88 birds in each replicate. Egg...
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Isoflavones are phytoestrogens which have estrogen-like activity in animals and humans with structure similar to 17-β-estradiol and capable of binding to estrogen receptors (ERs).This experiment was conducted to demonstrate the effect of isoflavones on estradiol concentration in blood and its influence on the productive performances in ISA Brown laying hens fed with supplemented feed with large...
متن کاملThe effects of different beak trimming techniques on plasma corticosterone and performance criteria in Single Comb White Leghorn hens.
DeKalb XL chicks were given a beak trim at 6 d of age (6DP) with a 2.8-mm gauge and a beak trim at 11 wk (11WB) with a block cut approximately 2 mm anterior to the nasal openings. Corticosterone (CS) levels of the 6DP treatment were (P < or = 0.01) elevated above nontrimmed CS levels at 2 h posttrim; and BW and feed consumption (FC) of the 6DP were depressed until 8 wk of age. At 11 wk of age, ...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1981
ISSN: 0032-5791
DOI: 10.3382/ps.0602548