Cattle Behavioral Response To The Stress Caused By The Diptera Invasion And Its Influence On Neuroendocrine System

To study the adverse impaction of the diptera on concentrated-fed dairy cattle, the generation mechanism was researched from the aspects of the body protection behavior and neuroendocrine perspective and so on in this study. This experiment was divided into two parts totally:The first part of study of bovine behavioral responses to stress of Diptera Insect invasion. This part is divided into two parts. Study on the behavior of Diptera Insect invasion cowl natural conditions. The temperament, age, healthy young cow10, falling number determination in Diptera Insect test department head, abdomen, tail, back, ear, while observing the system behavior of each head of cattle (tail, head, kicks, fibrillation, pendulum ear skin). Results:(1) the natural conditions the average number of Diptera insects as high as190, the cow to get rid of Diptera insects by wagging, pendulum ear, skin, kick, shakes the fibrillation5body invasion;(2)5kinds of system behavior occurrence frequency for wagging>set ear skin kick>shakes.Study on the behavioral responses of2human control cows Stomoxys calcitrans invasion test conditions. The temperament, age, healthy young9cows were divided into treatment group, high, low treatment group and control group, each group of3cows. The control group, the test group1and group2cows invasion Stomoxys calcitrans (on the greatest harm blood sucking insects) are maintained at0per head,50/head and25/head. Results:(1) the cow5body behavior frequency is high treated group>low treatment group, control group. The wagging tail, ears, skin twitching, pendulum kick, high treatment groups were significantly higher than that of low treatment group, the control group (P＜0.05), and head shaking behavior high treatment difference group and the low group was not significant (P>0.05), high treatment group was significantly higher than that in control group (P＜0.05);(2) occurred in5kinds of support behavior frequency in the3groups are wagging>pendulum kick fibrillation skin ear>shakes;(3) between the frequency of occurrence Stomoxys calcitrans invasion quantity and cow body behavior, head, tail, skin twitching, kick is not significant at the0.05level, the pendulum ear correlation is significant at the0.05level under the.Neuroendocrine responses to the second part of Diptera Insect invasion stress cattle. This part is divided into two aspects. Neuroendocrine responses of Diptera Insect invasion cow1under natural condition. The temperament, age, healthy young cow10, were divided into experimental group and control group, each group of5cows. Test30d,15d test will be the test group and the control group rotation. Results:(1) the surface temperature of cows in test group than in the control group, but the difference was not significant (P>0.05), average heart rate, the highest rate of dairy cows, the test group was higher than that in control group, the difference was significant (P＜0.05);(2) period of time during the test of different, experimental group of cow body surface temperature the highest average heart rate, heart rate, are generally higher than the control group (3); the experimental group contained in cow serum NE, EPI higher than that of the control group, and the difference was significant (P<0.05); the level of DA in serum of cows in test group than in the control group, the difference was not significant (P>0.05); the experimental group contained dairy cattle the serum levels of ACTH, GC higher than that of the control group, but the difference was not significant (P>0.05); content in cow serum IGF-I, GH in control group was significantly higher than that in the test group (P<0.05).Neuroendocrine responses Stomoxys calcitrans invasion dairy’s2artificial control of test conditions. The temperament, age, healthy young9cows were divided into treatment group, high, low treatment group and control group, each group of3cows. Test period every choice test group1, test group2and control group, each1cows were continuous3D. The control group, the test group1and group2cows invasion Stomoxys calcitrans (on the greatest harm blood sucking insects) are maintained at0per head,50/head and25/head. Results:(1) the surface temperature and the average heart rate, high group and low group, there was no significant difference between the low processing and control group (P>0.05), but high treatment group was significantly higher than that in control group (P＜0.05), maximum heart rate, between high group and low treatment difference was not significant (P>0.05), but significantly higher than that of the control group (P＜0.05), but the high treatment group was significantly higher than that in control group (P＜0.05);(2) content in cow serum NE, EPI, DA, ACTH, GC, IGF-I high treated group>low treatment group and control group, and three treatment groups had significant difference (P＜0.05), content in cow serum GH high treated group>low treatment group, control group, high group and low group, there was no significant difference between the low treatment group and control group (P>0.05), but the difference between treatment group and control group was significant (P＜0.05).