کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8501888 | 1553918 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A sensory additive alters grazing behavior and increases milk response to concentrate supplementation in dairy cows
ترجمه فارسی عنوان
یک افزودنی حساسیت رفتار حیوانات را تغییر می دهد و پاسخ شیر به مکمل تمرکز در گاوهای شیری را افزایش می دهد
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کلمات کلیدی
گاوهای شیری، رفتار گاو، مکمل افزودنی حسی،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
چکیده انگلیسی
The aim of this study was to evaluate the effect of a sensory additive, incorporated into a starch-based concentrate, on milk production and composition and grazing behavior in pasture- fed dairy cows. Forty-five Holstein cows were used in 15 incomplete 3â¯Ãâ¯2 Latin squares conducted concurrently with 3 treatments and 2 periods of 28 d At the beginning of the study, cows averaged 60â¯Â±â¯17.1 d in milk, 2.2â¯Â±â¯1.51 parity, 27.5â¯Â±â¯4.52â¯kg/d of milk, and 504â¯kgâ¯Â±â¯61.9 of BW (meanâ¯Â±â¯SD). Cows were assigned to the 15 squares by parity, milk yield, d in milk, and BW and within squares randomly assigned to 3 concentrate treatments that were 1â¯kg/d of a mineral concentrate (MC), 7â¯kg/d of a starch-based concentrate (CC), and 7â¯kg/d of CC supplemented with 30â¯g/d of a sensory additive (PEC; ProEfficient, Lucta SA, Barcelona, Spain). Cows grazed a perennial ryegrass pasture (Lolium perenne L.) offered at a daily allowance of 30â¯kg of DM per cow. Supplementation with the starch-based concentrate increased (P < 0.05) milk yield 4.4â¯kg/d compared with MC (24.3 .vs. 28.7â¯kg/d), whereas cows supplemented with PEC produced more (P < 0.05) milk and energy-corrected milk than CC cows (0.6 and 1.6â¯kg/d, respectively). As a result, milk response to concentrate supplementation (kg milk/kg concentrate) was improved by PEC. Additionally, PEC increased (Pâ¯<â¯0.05) milk protein percentage (3.74â¯vs. 3.43%) and yield (1.08â¯vs. 0.98â¯kg/d) compared with CC. Concentrate supplementation increased (Pâ¯<â¯0.05) total DMI, but reduced (Pâ¯<â¯0.05) total daily grazing time (GT) and biting rate (BR) in the evening. Compared with CC, PEC did not affect (P > 0.05) total and pasture DMI but increased (Pâ¯<â¯0.05) GT during the first 2â¯h after the a.m. milking as well as BR and ruminating time during the diurnal hours. The plasma concentration of active ghrelin was similarly reduced (Pâ¯<â¯0.05) by CC and PEC after 2â¯h of grazing. In summary, supplementation of a starch-based concentrate with a sensory additive improved milk and protein responses of dairy cows grazing a ryegrass pasture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Livestock Science - Volume 214, August 2018, Pages 106-111
Journal: Livestock Science - Volume 214, August 2018, Pages 106-111
نویسندگان
P. Nannig, R.G. Pulido, M. Ruiz-Albarrán, F. Bargo, G. Tedó, R.A. Palladino, R. Cussen, J. Acuña, A.J. Sheahan, J.R. Roche, I.R. Ipharraguerre,