The mammary nutrition research in lactating ruminants, especially in dairy cows, has become a hot spot of animal nutrition research at present, and mammary blood flow is one of the key factors that affect the absorption, uptake and utilization of mammary nutrients, therefore, the accurate measurement of mammary blood flow has the theoretical and practical significance. This article took the mammary gland of dairy goats as the object and the transit-time ultrasonic blood flow meter was used to assess the measurement of mammary blood flow and the accuracy under different conditions. The results showed that external pudendal vein ligation could effectively prevent external pudendal vein blood refluxed into the mammary vein and did not affect the mammary blood flow (P＞0.05); the effect of nutrition on mammary blood flow was slow but significant (P＜0.01); milking had little effect on mammary blood flow (P＞0.05), but lying could increase mammary blood flow significantly (P＜0.01); increasing the feeding times could reduce mammary blood flow fluctuations and enhance the rate of accuracy of measuring mammary blood flow, the mammary blood flow was decreased gradually from 01:00 to 12:00 o’clock and then increased, at the same time the milk yield was in a positive correlation with the average of the blood flow. In conclusion, the external pudendal vein ligation can effectively prevent the blood flow measurement from inaccuracy; nutrition has a great effect on the mammary blood flow; milking has little effect on the blood flow while lying can increase blood flow significantly; the measurement of mammary blood flow will be more accurate under the conditions of increasing the feeding times.［Chinese Journal of Animal Nutrition, 2011, 23（6）：1035 -1042］
ONG Yifu,MA Weiming*,WANG Zhonghua,HE Jiashuang,FU Ying,CAO Yongzhi,CHI Hongliang,XIE Bing,LIU Lianlian
. Measurement of Mammary Blood Flow in Dairy Goats[J]. Chinese Journal of Animal Nutrition, 2011
, 23(06)
: 1035
-1042
.
DOI: 10.3969/j.issn.1006-267x.2011.06.022
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