کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10975794 | 1108036 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of automatic cluster removers on milking efficiency and teat condition of Manchega ewes
ترجمه فارسی عنوان
اثر حذف اتوماتیک خوشه بر عملکرد شیرینگی و وضعیت خروس موشهای مانچگا
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کلمات کلیدی
خودکار خوشه حذف، مرغ مانچگا، تخمیر شیردوشی، مدت شیردوشی،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
چکیده انگلیسی
Milking operations represent more than 50% of the work on a dairy ewe farm. The implementation of automatic cluster removers (ACR) is gaining popularity, as it allows the operator to avoid manual cluster detachments, simplifying the milking routines. The aim of this study was to discover the effect on the milking of Manchega ewes over an entire lactation period by using this type of devices, set up with 2 different combinations of milk flow threshold (MF) and delay time (DT) and comparing them with the traditional method using manual cluster removal. During a 15-d pre-experimental period, the animals were milked without ACR and sampling was performed to select 108 ewes and distribute them into 3 groups of similar characteristics according to their parity, milk yield, milking duration, and mammary gland sanitary status. Later, each group was milked for a duration of 4Â mo in 3 different conditions: 1 with manual cluster removal, the second setting the ACR at MF 150Â g/min and DT 20 s, and the third setting the ACR at MF 200Â g/min and DT 10 s. Samplings of milking fraction, milking duration, milk composition, mammary gland sanitary status, teat-end status, and vacuum level in the short milk tubes during milking were performed. The use of ACR limited the vacuum drops in the short milk tubes and the edema in the teat end after milking, although no reduction in the number of new cases of mastitis was observed and the milk composition did not change. Moreover, it was noted that the use of ACR set with MF 150Â g/min and DT 20 s was more efficient than the manual cluster removal, as it obtained a similar amount of extracted milk but took less time. Conversely, the use of ACR set with MF 200Â g/min and DT 10 s involved a higher reduction in individual milking duration and the milking duration of groups of animals but reduced milk extracted.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dairy Science - Volume 98, Issue 6, June 2015, Pages 3887-3895
Journal: Journal of Dairy Science - Volume 98, Issue 6, June 2015, Pages 3887-3895
نویسندگان
J. Bueso-Ródenas, G. Romero, R. Arias, A.M. RodrÃguez, J.R. DÃaz,