کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5542780 | 1402522 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Factors affecting milking speed in Murciano-Granadina breed goats
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Factors affecting milking speed in Murciano-Granadina breed goats Factors affecting milking speed in Murciano-Granadina breed goats](/preview/png/5542780.png)
چکیده انگلیسی
Milk flow during the first minute of milking was analyzed using data from 1,132 Murciano-Granadina breed goats belonging to 17 herds. During the individual lactations, 2 test days were scheduled for recording several milk flow traits, total milk, milk composition (fat and protein percentages), and somatic cell count. Average lag time from teatcup attachment to arrival of milk at the milk claw (T0) was 4.9 s and at the milk meter (T1) was 15.8 s. Average milk flow after 30 s (MF0.5) was 0.29Â kg/30 s (0 to 1.1Â kg/30 s) and milk flow at 60 s or milking speed (MF1) was 0.67Â kg/min (0.1 to 2.1Â kg/min). Repeatabilities of T0, T1, MF0.5, and MF1 were 0.45, 0.58, 0.62, and 0.68, respectively. The MF1 showed high phenotypic correlation withT1(â0.63) and MF0.5 (0.90), medium values withT0(â0.42) and total milk (0.22), and very low values (â0.04 to â0.12) with fat, protein, and somatic cell count. We found no differences between flows during the first 3 lactations, with a reduction as the lactation number increased. Months in milk since parturition affected MF1, being highest in the first 3Â mo (0.67-0.71Â kg/min) and decreasing until the end of lactation (0.58Â kg/min). The effect of herd-test day was significant for all traits. Inclusion of all these effects for the analysis of milk flow traits is considered necessary.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dairy Science - Volume 99, Issue 12, December 2016, Pages 10102-10108
Journal: Journal of Dairy Science - Volume 99, Issue 12, December 2016, Pages 10102-10108
نویسندگان
E. Blasco, E.A. Gomez, C. Vicente, G. Vidal, C. Peris,