Optimization of ingestion of spray-applied poultry biologics by modification of environmental conditions at the time of application /
after spray application, a known predictor of CE
| Main Author: | |
|---|---|
| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1999.
|
| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | after spray application, a known predictor of CE and ingestion of spray-applied biologics on day-of- application followed by moving chick trays immediately application of biologics and reduced concerns application to neonatal chicks can improve applied product. Furthermore, changing photointensity brief high intensity light exposure at the time of colorants suggested that darker colors markedly and complete darkness prior to spray application, may conditions of constant photointensity, but had lesser constant lighting. However, optimization of for effects under more optimal photointensity regimes. environmental factors, increasing photointensity (0 FC establishment and efficacy. Data from experiments with evaluated the effect of selected photointensities, fact, increases preening activity to levels not fold as compared to the normal hatchery practice of for 15 sec during spray application (15 sec) and from 20 FC before spray application, to 300 FC briefly hatch chicks. Temperature, sound, and especially holding chicks at -20 FC prior to, and during spray holding chicks at 100 FC after spray application, improve CE ingestion and performance. increased cumulative preening events by more than 2- increases in cecal propionate concentrations 48 hrs indicate that environmental conditions at the time of into stacks (-0.3 FC). Similar optimization of lighting intensity also resulted in more than 2-fold medicator/proportioner function. Presently, we most useful for markedly and significantly increasing negates the need for addition of coloring and, in observed due to color addition to the spray solution of spray-applied product by chicks and indicate that photointensity near the time of spray application photointensity, and possibly other environmental photointensity, play a major role in determination of preening and preening-associated ingestion of spray- preening behavior in day-of-hatch chicks. Of these regarding diverse water quality and significantly improved preening behavior under sound, and ambient temperature on preening behavior Spray application offers low cost and efficient rographics. spray application, or subjecting the chicks to spray solutions preening activity under conditions of spray-application are critical for optimal ingestion spray-applied biologics. Furthermore, coloring of Taken together, these data indicate that to 1 l 5.5 FC) at the time of spray-application was under conditions of constant lighting. These data |
|---|---|
| Item Description: | "Major subject: Veterinary Microbiology". Vita. |
| Physical Description: | ix, 54 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references (leaves 50-53). |