(1) Clinical examination
Methods There are mainly inquiry, percussion, observation, palpation, sniffing and auscultation. Question: Mainly ask about the owner of the herd. Vision: Observe whether there are pathological phenomena in sheep with naked eyes or with simple instruments. The main contents of the inspection include grazing, feeding, exercise, fat, coat, skin, mucosa and feces of sick sheep. Smell: It is to use the sense of smell to detect abnormal smells (such as exhaled breath, mouth, excrement, pathological secretions, etc.) on animals to judge whether sheep are sick. Palpation: Touch and press the examined part with fingers, palms or fists to feel its hardness, temperature, tenderness, mobility and performance state, so as to determine the position, size and nature of the lesion (see Figure 1-6, Figure 1-7, Figure 1-8 for the method of fixing sheep during examination). Percussion: a diagnostic method of tapping the corresponding parts of the body surface with fingers or percussion instruments (percussion hammer, percussion board) to judge whether the tissues and organs of sheep are diseased. Auscultation: There are direct auscultation and indirect auscultation.
Figure 1-6 Holding Angle, Riding and Clamping Baoding Method
Figure 1-7 Two Hands Surrounding Baoding Method
Figure 1-8 Recumbent and Baoding Method (II) Pathological Autopsy
Pathological autopsy is an important method for on-site diagnosis of sheep diseases. When infectious diseases, parasitic diseases or toxic diseases occur in sheep, organs and tissues often show characteristic pathological changes. Through autopsy, we can directly observe the pathological changes of various organs and make a diagnosis quickly. In practice, the cadavers of sick sheep should be dissected as much as possible when conditions permit, and typical sick sheep can be dissected when necessary. In addition to visual observation, pathological materials were taken for further pathological examination when necessary.
(3) Laboratory diagnosis
Mainly for blood routine, urine routine, stool examination and microbial examination. Through these treatments, sick sheep can generally be found and diagnosed.