عنوان

Ammoniation of moldy straw and hays to improve nutritive value and(or) alleviate mycotoxicosis when fed to ruminants

شماره

TLpq303796869

زبان متن نوشتاري يا گفتاري و مانند آن

انگلیسی

عنوان اصلي

Ammoniation of moldy straw and hays to improve nutritive value and(or) alleviate mycotoxicosis when fed to ruminants

نام عام مواد

[Thesis]

نام نخستين پديدآور

M. F. U. Khan

نام ساير پديدآوران

G. S. Smith

نام ناشر، پخش کننده و غيره

New Mexico State University

تاریخ نشرو بخش و غیره

1989

نام خاص و کميت اثر

118

جزئيات پايان نامه و نوع درجه آن

Ph.D.

کسي که مدرک را اعطا کرده

New Mexico State University

امتياز متن

1989

متن يادداشت

Baled prairie hay (10% CP) and wheat straw (3.8% CP) were allowed to mold. Moldy and nonmoldy portions were ammoniated (3 kg anhydrous ammonia/100 kg; 4 to 21C; 7 d) and fed. Ammoniation increased CP in nonmoldy straw (3.8 to 8.8%) and moldy straw (3.3 to 6.2%) and caused lesser change in nonmoldy (9.9 to 13.2%) and moldy hay (8.3 to 13.2%). Ammoniation decreased NDF in both roughages. Sixteen wether sheep (48 3 kg) were fed moldy or nonmoldy hay (with or without ammoniation) ad libitum for 17 d. Hat intake (2.6 to 2.8% of BW daily) was not affected (P >.10) by mold or by ammoniation; but digestibility of NDF was increased (P <.10) by mold (62 vs 55%) and by ammoniation (61 vs 55%). Digestibility of CP was decreased by mold (41 vs 58%; P <.10) and increased slightly by ammoniation (53 vs 46%; P >.10). Moldy hay caused a severe decrease in N balance (-6.6 vs 1.3 g/d; P <.10), and ammoniation failed to improve N balance of wethers fed moldy hay. Moldy hay tended (P >.10) to elevate serum aminotransferase activities (AST and ALT). Ammoniation increased blood urea N (BUN; 16 vs 9 mg/dl; P <.10) but also tended to increase serum alkaline phosphatase (ALK) as well as AST and ALT. Sixteen beef steers (241 7 kg) were fed moldy or unmoldy wheat straw (ammoniated or unammoniated) ad libitum for 19 d. Intake was least (P <.10) for steers fed moldy, nonammoniated straw (1.3% of BW daily) and greatest (P <.10) for steers fed moldy, ammoniated straw (1.8% of BW daily). Steers fed nonmoldy straw gained 5 kg and those fed moldy straw lost 6 kg BW (P <.26) during 19 d. Ammoniated, nonmoldy straw elevated BUN (10.5 mg/dl) over other straws (2.3 to 3.8 mg/dl; P <.10). ALK was greater in steers fed moldy vs nonmoldy straw (148 vs 95 U/liter; P <.10). Sixteen steers were fed moldy bermuda grass hay that was unammoniated (11.2% CP) or ammoniated (14.2% CP). Hay intake was not affected (P >.10) by ammoniation. Serum ALK, AST and lactic dehydrogenase were elevated by moldy hay, and alleviated by ammoniation. Ammoniation improved nutritive value of low-protein straw but failed to alleviate toxic effects of moldy straw and hays.

موضوع مستند نشده

Biological sciences

موضوع مستند نشده

Livestock

موضوع مستند نشده

straw

مستند نام اشخاص تاييد نشده

G. S. Smith

مستند نام اشخاص تاييد نشده

M. F. U. Khan

نام الکترونيکي

فرمت انتشار

p

نوع ماده

[Thesis]

کد کاربرگه

276903

سطح دسترسي

a

تكميل شده

Y