Impact of spray-dried bovine serum and environment on turkey performance
| Autor: | J.D. Quigley, J. M. Campbell, L. E. Russell |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Litter (animal)
Spray dried Turkeys biology Chemistry Drinking Administration Oral General Medicine Blood Proteins Environment Weight Gain Feed conversion ratio Animal science Tap water biology.protein Animals Animal Science and Zoology Water intake Bovine serum albumin Energy Intake Quadratic response |
| Zdroj: | Poultry science. 83(10) |
| ISSN: | 0032-5791 |
| Popis: | Two 28-d experiments were conducted with 280 and 224 Hybrid turkeys for experiments 1 (7 poults per pen, 10 pens per treatment) and 2 (7 poults per pen, 8 pens per treatment), respectively. The effect of Innavax (INX; spray-dried serum) administered in drinking water on turkey performance was evaluated. In both experiments, turkeys were randomly assigned to receive tap water mixed with 0, 0.45, 0.90, or 1.35% (wt/wt) INX and housed in floor pens containing clean (experiment 1) or used (experiment 2) litter. In experiment 1, a quadratic response in average daily gain (ADG), water intake, and feed efficiency occurred (P0.05) in the first week with increasing levels of INX. During the second and third weeks, a quadratic response in water intake occurred (P0.05) with 0.90% INX resulting in peak intake. In the fourth week, ADG increased quadratically (P0.05) with increasing INX. Overall for the 4-wk period, ADG and water intake increased quadratic manner (P0.05) with increasing INX to a maximum at 0.90%. In experiment 2, ADG and water intake increased linearly (P0.05) during the first week. Feed efficiency was unaffected (P0.05) by experimental treatment during the first week but increased linearly (P0.05) from d 8 to 14 and d 15 to 21. The growth response to INX was influenced by environment. A greater growth response of turkeys to INX was observed when turkeys were housed in floor pens with used litter compared with floor pens with clean litter. |
| Databáze: | OpenAIRE |
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