an experiment was conducted to study the effects of carbon tetrachloride (ccl4) on post-peak performance and serum enzymes of hy-line w-36 laying hens from 32-36 weeks of age. the experiment was carried out with a total of 192 laying hens in a completely randomized block design. during the experiment laying hens were allocated to 4 groups consisted of t1) no ccl4 as control diet, t2, t3 and t4)...

INTRODUCTION ................................................................. 27 PRESENTATION OF RESULTS ...................................................... 29 The correlation between monthly egg record and annual egg production.. .. 29 The correlation between monthly egg record and the total production of the remaining eleven months .............................................. 44 The cor...

an experiment was conducted to study the effect of epinephrine (ep) and bromocriptine (br) on productive traits of laying hens. thirty white leghorn hens, 50 weeks old, were divided into three equal treatments (with 10 hens for each treatment): control, physiological serum (0.5 ml/hen/week), ep (0.5 ml/hen/week) and br (100 g/kg of body weight (bw); w/v in absolute alcohol). hens were injected ...

the induction and regulation of broodiness is of the most important role of prolactin in avian species.the promoter region of the prolactin gene is an appropriate model for studying tissue-specific andhormonally-regulated activation of gene transcription. in this study, the association between prolactinpromoter region alleles and egg production in fars native chickens was investigated. in total...

We conducted an experiment to evaluate the potential for dietary 1,4-diaminobutane (putrescine) to promote eggshell quality and overall laying hen performance. A total of 128, 60-wk-old Barred Rock hens were fed a corn and soybean meal-based layer diet supplemented with 0.0 (control), 0.2, 0.4, and 0.6% free base 1,4-diaminobutane for 4 wk. The feeding of supplemental putrescine decreased feed ...

the best method of fish breeding is the isolation of pure lines having high-producing hybrids. the decline in heterosis (dih) resulted from inbreeding, maternal effects, general combining ability (gca) and specific combining ability (sca) on reproductive traits (e.g., egg production, number of hatched egg, and hatchability of pure lines and crosses) of tiger, green, and albino barbie hybrids we...

the study was conducted at haramaya university poultry farm to evaluate the effects of locally processed fish waste meal (fwm) in the diet of white leghorn layers on the performance and hatchability, egg quality, sensory flavor and profitability of the rations. one hundred eighty chickens at five months of age were randomly distributed (15 layers per each 12 pens). the pens were randomly assign...

Abstract Egg white powder fermented with Lactobacillus bulgaricus bacteria using pan drying method to improve the quality of egg powder. Fermentation is carried out reduce Maillard reaction in This research aims determine best percentage used based on physicochemical quality. The materials was fresh eggs weight 60 ± 2 g and starter bacteria. treatments were without addition (T 0 ), 2% 1 4% 6% 3...

the effects of dietary inclusion of medicinal plants’ by-product mixture on performance, the relative internal organ weight, ileal microbial counts, and small intestinal and liver morphologic alterations in laying hens receiving different omega-6 to omega-3 ratios as a 2×3 factorial arrangements with three levels of plants’ by-product (zero, 2.5 and five percent) and two omega-6 to omega-3 rati...