کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2453861 | 1110355 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of endo-1,4-β-d-mannanase enzyme (Hemicell HT 1.5 Ã) on the growth performance of nursery pigs
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
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چکیده انگلیسی
The objective of the current study was to compare nursery pigs fed endo-1,4-β-d-mannanase enzyme (Hemicell HT 1.5x) and 1% added fat with those fed a control diet (no enzyme) and increasing added fat. Soybean meal contains β-mannans, which are polysaccharides in cell walls of legumes. These β-mannans induce an immune response that prevents nursery pigs from reaching maximum growth potential. Endo-1,4-β-d-mannanase hydrolyzes β-mannans, which allows pigs to realize full growth potential. Nine hundred twenty total cross-bred pigs were used in a randomized complete block design at 5.78 kg of initial BW for 42 d. Treatments were (1) 250 mg/kg of endo-1,4-β-d-mannanase with 1% added fat, (2) control (no enzyme) with 1% added fat, (3) control with 2% added fat, (4) control with 3% added fat, and (5) control with 4% added fat. Data were analyzed using a Dunnett's test of difference from control to determine the effects of the enzyme. Endo-1,4-β-d-mannanase did not affect ADG (P â¥Â 0.29) or ADFI (P â¥Â 0.96). No differences in G:F were noted between the enzyme-fed pigs and pigs fed 1 or 2% added fat (P = 0.68). Pigs fed 3% added fat (0.716; P = 0.02) were 2.58% more efficient, whereas pigs fed 4% added fat (0.728; P < 0.001) were 4.30% more efficient than pigs fed endo-1,4-β-d-mannanase and 1% added fat (0.698). Endo-1,4-β-d-mannanase was not effective in improving feed efficiency in pigs fed an isocaloric diet and was not able to improve feed efficiency to levels demonstrated by nursery pigs fed 3 and 4% added choice white grease.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Professional Animal Scientist - Volume 30, Issue 4, August 2014, Pages 393-399
Journal: The Professional Animal Scientist - Volume 30, Issue 4, August 2014, Pages 393-399
نویسندگان
S.N. Carr, G.L. Allee, P.J. Rincker, R.S. Fry, D.D. Boler,