A noninvasive technique, the scanning ion-selective electrode technique (SIET) was applied to measure Na(+) and Cl(-) transport by the yolk-sac skin and individual mitochondrion-rich cells (MRCs) in intact medaka larvae (Oryzias latipes). In seawater (SW)-acclimated larvae, significant outward Na(+) and Cl(-) gradients were measured at the yolk-sac surface, indicating secretions of Na(+) and Cl...

The effects of 6/85-strain Mycoplasma gallisepticum (6/85MG) inoculation alone or in conjunction with a F-strain M. gallisepticum (FMG) overlay and its timing on the performance of commercial egg-laying hens were investigated. Control birds received sham inoculations at 10 wk of age. A second treated group of birds was inoculated with 6/85MG at 10 wk of age, a third treatment group of birds was...

Currently, the production of eggs in alternative systems has been increasing, but there is no information regarding its quality criteria. Aiming to analyze physical and chemical characteristics organic eggs, associated with advancing age laying, egg weight, albumen height, shell thickness, yolk index percentage, percentage Haugh Unit (HU) evaluated. Every two weeks, six fresh were evaluated, du...

This study aimed to evaluate the introduction of cassava flour, moringa leaf meal and bocaiuva pulp in laying hens’ diets on egg quality. Nine hundred eggs from Dekalb® White hens between 34 54 weeks age rearing semi-intensive system were used experiment. The submitted following diets: 1 - diet control: maize soybean base diet; 2 with inclusion 18% root meal+4% pulp; 3 24% meal+6% 4 30% meal+8%...

Cysteamine has been reported to modulate energy homeostasis and exert significant growth-promoting effects in broiler chickens. However, little is known concerning its effects on egg production of hens and the growth rate of their offspring. In the present study, 67-wk-old broiler breeders were allotted at random to control and cysteamine-supplemented (400 mg/kg) groups for 8 wk. The hatchlings...

This study investigated the impact of different levels dietary energy and crude protein on productive performance, egg quality, reproductive parameters in Rajasri breeder birds during a 12-week period between 25 to 36 weeks age. A total 648 were divided into nine treatments, each with eight replicates, following 3 × factorial arrangement three metabolizable (2400, 2500, 2600 kcal ME/kg) (14, 15...

During work on Coccidioides immitis the need arose for a relatively rapid method for the determination of the virulence of a number of strains of this microorganism. A satisfactory method has been described by Friedman, Smith, and Gordon (1955) in which a standard dose, usually 100 arthrospores, is inoculated intraperitoneally into mice. The virulence was determined from (i) the percentage of a...

Trial 1 tested the effects of ground vs whole flaxseed at dietary levels of 5, 10, or 15% compared to a corn-soybean or fish oil control on egg production of Leghorn hens over a period of 8 wk. Dietary flaxseed decreased feed consumption, weight gain, and egg weights compared to the control diets; however, flaxseed and fish oil significantly improved egg production (88.9 and 93.0%, respectively...