Study On Non-social Effects Of Pollution Management Technology In Diary Cattle

In this study, a hazard analysis and critical control point (HACCP) model of diary cattle was set up by analyzing the process of management, and it was put into practice afterward. 24 health diary cows (consist three diary phase, early lactation 8 heads, Late lactation 8 heads and dry period 8 heads) were used in this experiment, the cow of every phase ware divided into two groups by milking performance respectively, according randomized block design. Phase feeding technology was used in group I (control group), and in group II (test group) conventional feeding method was used. During the experiment, the critical control point (CCP) was controlled, after 4 weeks, milk sample of early lactation and late lactation cows were collected and the component was analyzed, but the experiment period of dry period cow were continued until 15 d after parturition. Results showed that safely milk can be produced in the diary cattle breeding section by control critical control point (CCP). the produce performance of group II of the three diary phase (early lactation, Late lactation and dry period) were increased by 10.2 % (P<0.01),8.5 % (P>0.05)and 17.3 % (P<0.01)respectively, compare to group I . Income of the farmer was increased by 797 yuan per head per annum. Compare with group I, the requirements for early lactation or Late lactation cows in group II to produce lkg fat corrected milk(FCM) was decreased by 9.5% (P<0.05) and 6.3% (P>0.05) in net energy, and the comsumption of crude protein was decreased by 8.6% (P<0.05) and 5.5% (P>0.05) respectively. Body condition of the diary cattle in group II were better and the disease incidence were lower than group I .Behavior is the exterior represent of inner physiological movement, which is very important to stockbreeding management. 12 health cows were divided into three groups according diary phase , group I (early lactation cows 4 heads), group II (late lactation cows 4 heads), group HI(dry period cows 4 heads), and the Behavior of every diary cow were observed during a 48 h continuous period. Results showed that the total time of rumination at night were longer than in daytime. The total time of rumination or feeding of early lactation cows were longer than any other group, and the Rate of feed intake were faster. Time begin to ruminate after feed, group II was the shortest, and group III was the longest. The times of drinking, cows in group I was far more than other groups(P<0.01), and the times of feces output in group I is more than other groups too(P<0.05),but the micturate times are about the same in those groups. Total time of recumbency, group III was the longest, and group II was the shortest.A criterion of diary cows safely management was put forward, by inducing the result of former research works as well as the result of this study. The criterion is adapt to the actuality of the diary cows breeding section in Guiyang , which could act as a reference material for the farmers.