عنوان

Vitamin E in young turkeys:

شماره

TLpq304185635

زبان متن نوشتاري يا گفتاري و مانند آن

انگلیسی

عنوان اصلي

Vitamin E in young turkeys:

نام عام مواد

[Thesis]

نام نخستين پديدآور

M. F. Soto-Salanova

عنوان اصلي به قلم نويسنده ديگر

A reassessment of the requirement

نام ساير پديدآوران

J. L. Sell

نام ناشر، پخش کننده و غيره

Iowa State University

تاریخ نشرو بخش و غیره

1995

نام خاص و کميت اثر

362-362 p.

جزئيات پايان نامه و نوع درجه آن

Ph.D.

کسي که مدرک را اعطا کرده

Iowa State University

امتياز متن

1995

متن يادداشت

Three experiments were conducted to test different dietary concentrations and different sources of vitamin E (VE) to reevaluate the dietary requirement of VE for young turkeys, and to determine whether an early high dose of VE given either by subcutaneous injection or added to the drinking water would improve the usd\alphausd-tocopherol (usd\alphausdTOC) status of poults. In Experiment 1, turkeys received 12 or 300 IU of VE/kg in the diet (dl-usd\alphausd-tocopheryl acetate (dl-usd\alphausdTACT)) or by subcutaneous injection (dl-usd\alphausdTOC), and were fed 5,000 or 15,000 IU of vitamin A/kg of diet. In Experiment 2, six of the treatments resulted from the factorial combination of two dietary sources (dl-usd\alphausdTACT or d-(usd\alphausdTOC) and three concentrations (12, 80, or 150 IU/kg) of VE. The seventh treatment consisted of a single subcutaneous injection of 25 IU of d-usd\alphausdTOC at Day 1. In Experiment 3, treatments resulted from the addition to the diet of four equidistant increments of dl-usd\alphausdTACT (12, 46, 81, and 115 IU/kg of diet), or consisted of a single subcutaneous injection of 50 IU of d-usd\alphausdTOC at Day 1, or addition of 50 IU of d-usd\alphausdTOC/poult in the drinking water from Day 3 to Day 10. Increasing dietary concentrations of VE did not have a consistent effect on rate or efficiency of poult growth, but increased usd\alphausdTOC concentration in adipose tissue, adrenal glands, breast muscle (Pectoralis superficialis), bursa of Fabricius, small intestine, leg muscle (Biceps femoralis), liver, lung, pancreas, plasma, plasma fractions (VLDL, LDL, HDL), RBC, and uropygial gland. Increasing concentrations of dietary VE decreased RBC susceptibility to hemolysis from 1 to 21 d of age, but did not have an effect on plasma creatine kinase, plasma triglycerides, or liver TBARS. There was no consistent difference between sources of dietary VE (dl-usd\alphausdTACT, dl-usd\alphausdTOC, or d-usd\alphausdTOC) with respect to performance and tissue usd\alphausdTOC. Also, dietary vitamin A had little effect on performance or usd\alphausdTOC content of the tissues. Subcutaneous injection of dl-usd\alphausdTOC had variable effects on the parameters studied in Experiment 1, but injection of d-usd\alphausdTOC consistently increased usd\alphausdTOC in tissues and decreased the RBC susceptibility to hemolysis in Experiments 2 and 3. Supplementation of the drinking water with 50 IU of d-usd\alphausdTOC/poult from Day 3 to Day 10 temporarily increased usd\alphausdTOC in all tissues studied and decreased RBC hemolysis. There were high correlations between plasma usd\alphausdTOC and tissue usd\alphausdTOC, and liver usd\alphausdTOC and tissue usd\alphausdTOC after 7 d of age. As indicated by tissue usd\alphausdTOC and RBC susceptibility to hemolysis, concentrations between 81 and 115 IU of VE/kg of diet are needed to maintain an adequate health status of poults during the first 3 weeks after hatching.

موضوع مستند نشده

alpha tocopherol

موضوع مستند نشده

Biological sciences

موضوع مستند نشده

Livestock

مستند نام اشخاص تاييد نشده

J. L. Sell

مستند نام اشخاص تاييد نشده

M. F. Soto-Salanova

نام الکترونيکي

فرمت انتشار

p

نوع ماده

[Thesis]

کد کاربرگه

276903

سطح دسترسي

a

تكميل شده

Y