EFFECT OF REPLACEMENT OF ALFALFA HAY WITH STRAW IN ISO-FIBROUS DIETS WITH DIFFERENT LEVELS OF CATION-ANION BALANCE ON DAIRY COWS PERFORMANCE

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DAYANI O.; GHORBANI G.R.

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Journal: Iran Agricultural Research Year:2003 | Volume:22 | Issue:1 Page(s): 15-28

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Title

EFFECT OF REPLACEMENT OF ALFALFA HAY WITH STRAW IN ISO-FIBROUS DIETS WITH DIFFERENT LEVELS OF CATION-ANION BALANCE ON DAIRY COWS PERFORMANCE

Author(s)

DAYANI O. | GHORBANI G.R. | Issue Writer Certificate

Keywords

CATION-ANION BALANCE. COWS. LACTATION NDF WHEAT STRAW.Q3

Abstract

Effect of replacing alfalfa hay with wheat straw in iso-fibrous (35% NDF) diets with different levels of dietary cation-anion balance (DCAB) was studied by using eight mid-lactation Holstein cows blocked according to parity and milk yield in a 4x4 replicated Latin Square design. The treatments were 1) alfalfa hay (AH) with +35 meq, 2) wheat straw (WS) with +35 meq, 3) WS with +45 meq, and 4) WS with +55 meq (Na` + K+)CI-11t10 g diet dry matter (DM). Treatment periods were 15 d with the first 10 d serving as an adaptation period. Forage to concentrate ratio decreased from 43:57 to 26:74 when WS was substituted for AH. Apparent digestibility of DM, organic matter (OM), and nitrogen (N), and DM disappearance rate at 24 h post-feeding decreased significantly in WS containing rations (P<0.01), but was not increased with increasing dietary cation-anion balance (DCAB) in WS rations. No significant differences were observed in DM intake. Actual milk yield and 4% fat-corrected milk (FCM) were not affected by the treatment. Milk fat percentage was significantly (P

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APA: Copy

DAYANI, O., & GHORBANI, G.R.. (2003). EFFECT OF REPLACEMENT OF ALFALFA HAY WITH STRAW IN ISO-FIBROUS DIETS WITH DIFFERENT LEVELS OF CATION-ANION BALANCE ON DAIRY COWS PERFORMANCE. IRAN AGRICULTURAL RESEARCH, 22(1), 15-28. SID. https://sid.ir/paper/16130/en

Vancouver: Copy

DAYANI O., GHORBANI G.R.. EFFECT OF REPLACEMENT OF ALFALFA HAY WITH STRAW IN ISO-FIBROUS DIETS WITH DIFFERENT LEVELS OF CATION-ANION BALANCE ON DAIRY COWS PERFORMANCE. IRAN AGRICULTURAL RESEARCH[Internet]. 2003;22(1):15-28. Available from: https://sid.ir/paper/16130/en

IEEE: Copy

O. DAYANI, and G.R. GHORBANI, “EFFECT OF REPLACEMENT OF ALFALFA HAY WITH STRAW IN ISO-FIBROUS DIETS WITH DIFFERENT LEVELS OF CATION-ANION BALANCE ON DAIRY COWS PERFORMANCE,” IRAN AGRICULTURAL RESEARCH, vol. 22, no. 1, pp. 15–28, 2003, [Online]. Available: https://sid.ir/paper/16130/en

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