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Duck Technology and Management (2)
7. Names of various parts of the internal organs of the duck (1) The digestive system 1. Oral CAVITY The oral cavity of the duck is located between the upper and lower jaws. It is a cavity extending forward and backward. It consists of upper mouth, lower mouth, lower jaw bone, and anterior fontanelle. constitute. (1) Beak (BEAK): The upper part of the mouth and the lower part of the mouth are divided into two parts. The upper and lower sides are flattened, nearly triangular, and the mouth is longer than the lower mouth. The tip of the upper and lower mouths have a bean-shaped protrusion with a black point name. Ganoderma lucidum, which is a tactile device rich in nerves, is sensitive to the inner edge of both sides of the mouth, and has a large number of horizontal sulci. It is arranged in a zigzag shape to replace the lip and teeth function, and it is used to cut off the soft grasshopper. When the upper and lower mouths are fitted to each other, a mesh-like gap is formed, which facilitates the entry of mud water outlets in the oral cavity when the bait is collected. (2) PALATE: forming the back wall of the oral cavity, with a central ridge extending back and forth in the center, and a small circular papillae at the back of 1/3, and two to three ellipses on both sides of the front end. Protuberances, surrounded by a triangle of chicks. (3) Cheeks: Forms the side wall of the mouth, located at the base of the upper and lower mouths. (4) VENTRALLY: It is formed by V-shaped mandible and muscle. 2. The tongue (TONGUE) is located at the bottom of the mouth, and it is shaped like a soft long board. The tip of the tongue is blunt, the tongue is narrow, the tongue is blunt and wide, and the back of the tongue is recessed in the back and grooved in the back, while the back is convex in the back. There are many sharp thorns on both sides of the tongue, shaped like a sawtooth, easy to take off and easy to take off. The linear nipples on the back of the tongue have been degraded. There are many large-tip nipples on both sides of the tip of the tongue, and a leafy papilla on both sides of the back of the tongue. 3. Pharyngeal (PHARYNX) is located at the upper end of the esophagus. 4. The esophagus (OESOPHAGUS) is tubular and rich in expansion. 5. The hernia sac (CROP) is located in the base of the neck, slightly on the right side, and the hernia sac is usually made as a sac. It is small, about 2 centimeters in width, and about 5 centimeters in length. It is not as good as a chicken. 6. PROVENTRIC or GLANDULAR PORION The anterior stomach is located on the left side of the midline of the abdominal cavity, between the left lung and the left liver, the posterior side of the crop, and the dorsal side of the left testis or ovary. Five to eight lower ribs, the front stomach for a long pear shape, there are two holes in one pass through the esophagus, the other through the muscle stomach. 7. The middle zone (LNTERMEDIAE ZONE) The stenosis of the lower part of the glandular stomach and the muscular stomach is called the middle zone. It is located between the glandular stomach and the muscle stomach. The middle zone is a thin and thin membrane, and its mucosa is smooth and pale gray. 8. MUSCULAR STOMACH or GIZZARD is located in the center of the abdominal cavity, slightly to the left, equivalent to the eighth rib to the phalanges, the posterior to the front stomach, followed by the left ischiorectum, and the front and bottom are connected to the liver. Pancreas and duodenum. Muscle and stomach is flat round muscle sac whose muscle wall is thick and dark purple, there are two mouths through the forefoot, the other through the duodenum, stomach and stomach close to round, short before and after, left and right to extend, The center is slightly convex, the center of the back is slightly convex, the periphery is thin and thin, and the posterior muscular wall is small and thin. 9. Duodenum (DUODENUM) living in the back of the abdomen, from the muscle stomach, along the lateral abdominal wall, after the muscle stomach, to the lower left line, the bone plate cavity, back to the pylorus near the walk to form a U-shaped. 10. The jejunum and ileum are flexed and swung in the center of the abdominal cavity and surround the abdominal balloon. 11. The cecum (CAECUM) is located on both sides of the straight line between the large intestine and the small intestine, one on each side, the dorsal side is the left and right testicles, the ventral side is connected to the pancreas and the muscle stomach, and the blind end is on the left side of the pelvic cavity slightly to the left, the cecum The smaller bowel is slightly thicker. 12. The colon and rectum colon and rectum borders are not obvious, are located below the spine, the front end is connected to the ileum, and the back end is finally drained into the pool cavity. 13. The yolk-blind diverticulum is located in the middle of the jejunum, outside the intestinal wall, and the yolk blind diverticulum is a small cylindrical protrusion that is smaller than the chicken. 14. Liver (LIVER) (1) Position: The liver is located in the lower center of the abdomen, the fifth to eight ribs on the left and the fourth to nine ribs on the right, followed by the apex of the heart, followed by the stomach and stomach, and the upper left Stomach, below the back of the sternum, and a little sternum to the rear. (2) Shape: semi-conical, dark auburn, with a cut in the lower edge of the liver, dividing it into left and right leaves, the right lobe larger, showing a narrow triangle, the left lobe small, about 1/2 length of the right lobe, near In the wrong triangle. (3) gallbladder: located in the visceral surface of the right lobe, close to the liver door, a thick green olive-like membrane sac, a biliary duct, are open to the duodenal mucosal surface. 15. Pancreas (Dirty PANCREAS) The pancreas is located in the abdominal cavity, inside the horseshoe of the duodenum, the first 2/3 parts. The pancreas is divided into pale yellowish gray and upper and lower flattened strips and divided into dorsal, ventral, and tail clover. (B) of the respiratory system 1. Nasal cavity (NASAL CAUITY) (1) the frontal nostrils: located in the mouth on the basis of the upper mouth to the front of the left and right, respectively, was oblong, passing in the nasal cavity. It is composed of thin cartilage and is located between the left and right nostrils. It has an oblong circular hole at the front to allow the left and right nostrils to communicate with each other. (2) After the nostrils: located in the rear end of the nasal cavity, is also a long oval, a left and right, smaller than the previous nostril, through the mouth, throat and upper throat. (3) Nasal cavity: It is a cavity that is lengthened before and after, and it is divided into right and left nasal cavity depending on which, it is shorter and narrower than the animal. 2. The trachea (TRACHEA) starts at the upper larynx and runs along the ventral side of the esophagus. It goes straight into the thoracic cavity and reaches the dorsal side of the heart. It divides into left and right bronchus. It passes through the ventral surface of the lung and finally in the lungs, with an average of one or two or seven cartilage wheels. 3. The bronchi (BRONCHI) begins at the lower end of the trachea, one at the left and one at the right, and enters the lungs through the hilum. Its structure is the same as that of the trachea, which is thinner and shorter than the trachea. 4. Throat (LARYNX) (1) Anterior larynx: Located in the inferior wall of the pharynx, the front end of the trachea. (2) Posterior larynx: (POSTERIOR LARYNX); also known as SYRINX, located at the junction of the trachea and left and right bronchus. The tympanic male duck that appears flattened and splayed around is slightly enlarged and protrudes to the left. Was not cystic. 5. Lung (LUNG) is located in the upper front of the chest, left and right sides of the spine, invade the second to nine intercostal space, the lower esophagus passes, and the lower edge contacts the testis. It is a fresh flesh-colored spongy, sub-left and right leaves, and the lung tip is connected to the first rib. (III) Urinary system 1. Kidneys (Kidneys) Each of the kidneys on the left and right sides of the kidney is located on both sides of the lower spine. It starts from the last rib and goes back along the spine to reach the back of the rectum. The front end is connected to the lungs and the back end of the iliac bone is recessed. The lumbar spine and iliac bone are flanked, the ventral front is connected to the testis (or ovary), and the back is connected to the intestine and fallopian tubes. The kidneys are dark brown and red, squashed up and down, there are anterior and posterior tri-lobed, and the posterior fossa. Second, the smallest leaf. 2. Left and right ureters, starting from the ventral surface of each kidney leaf near the inner edge, following the right and left side of the median line, and finally draining the cavity tract and the lateral side of the vas deferens (duck) or the left fallopian tube ( Female duck). (4) Reproductive system 1. Testis (testis TESTIS) Each one is located in the abdominal cavity, which is equivalent to the eighth to the nine ribs. The front end extends into the inner side of the lung's posterior border and the dorsal side connects the lung, anterior kidney, middle lobe, and accessory kidney. The large intestine is connected to the ventral side, followed by the small intestine, the inside is connected to the left and right, and the duck testes are ovoid, generally yellowish white or white. 2. The epididymis (EPIDIDYMIS) is located on the medial border of the testis and is elongated in anterior and posterior directions. It is flattened up and down. It is not oblong in shape and is pale yellow-brown. It is more developed than chickens. 3. DUCTUS DEFERENS The vas deferens starts from the posterior side of the epididymis and follows the left and right sides of the spine. It passes through the kidney and the inside of the ureter and then transfers the ureter externally. Road. The white thin tube has a small and straight diameter at the beginning, gradually distort to the posterior side, and ends with a seminal vesicle. 4. The penis (PENIS) is located in the left upper part of the wall of the drainage chamber, close to the anus opening. The chicken is white with a light, elastic, and twisted conical shape. The tip is usually seven to eight centimeters long. The only one is the largest dish duck, and the smallest is Muscovy Duck. 5. OVARIES (OVARIES) The left side of the left ovary (the right side has degenerated) is located in the abdomen of the eighth to the nine ribs, followed by the left lung posterior edge, followed by the left anterior kidney, ventral to the front stomach and spleen, medial Connected to the large vein, the ovary is not the correct shape of the grapes, and its surface has a large number of eggs of different sizes and colors. 6. The fallopian tube (OVIDUCTUS) is also left only, located in the left upper part of the abdominal cavity, connected to the front of the intestine to connect the ovaries, and the back end finally drains the left side of the cavity wall. The duck fallopian tube is a flexion tube. Its front end is funnel-shaped and opens into the abdominal cavity. The back of the infundibulum is narrow and narrow. After that, the wall of the inn is thickened and the diameter is enlarged. This is called the uterus. After that, the diameter of the tube becomes narrow, called the cavity. 7. The excretion chamber, also known as the common venting chamber or cloacal cavity, is located at the end of the digestive tract and the genitourinary tract. The excretion chamber is short and open to the outside. There is a fecal tract on the dorsal side of the inner wall (fecal tract) to the outside of the rectum fecal antrum. There are urinary sinuses (drainage) attached to the end of the ureter and genital canal. The anal sinus (anal canal) is located behind the posterior wall of the pelvic antrum. (E) Endocrine system 1. Thyroid gland (THYROID GLAND) Also known as the gonads, each of the left and right is located at the upper end of the tracheal part of the neck base and the right side of the esophagus. Duck thyroid is flat oval, with translucent tan glands, large beans. 2. Parathyroid gland (PARATHYROI GIAND) The left and right sides are located below the thyroid gland. The parathyroid gland is a flat, small oval with pale brown bodies. 3. The thymus (THYMUS GLAND) is located subcutaneously on both sides of the neck, along the trachea and jugular veins to the anterior neck, there is only one duck thymus, adulthood has disappeared, left and right leaves, each leaf is divided into six leaves, flattened Leaflike, soft and grayish yellow. 4. The adrenal glands (ADRENAL GLANDS), one on the left and right sides, are located on the medial side of the anterior renal sulcus. On both sides of the abdominal aorta and the posterior large vein, they are irregularly triangular or oblong in shape and have a tan color. (6) Circulatory system 1. Spleen (SPLEEN) Located in the abdominal cavity, below the liver, at the junction of the foregut and gizzard, nearly triangular, slightly flat, auburn. 2. HEART (1) Location: The duck's heart is located in the middle of the chest cavity. The apex of the heart is slightly on the right side of the midline. The right side is equivalent to the third to the sixth intercostal space, and the left side is also the third to the sixth intercostal space. The left side of the frontal neck balloon is connected to the left lobe of the liver and the right side is connected to the right lobe of the liver. The dorsal side receives the trachea, esophagus, chest, and balloon, and the ventral side connects the chest wall. (2) Shape: A Full Shape: The heart is conical. B Right atrium: The right atrial appendage is less pronounced, the right atrioventricular orifice has a half-moon valve, thicker, and there is a fossa ovalis in the atrium. C Right ventricle: The chamber wall is thin, the chamber is short, and the pulmonary artery has three and a half valves. D. Left atrium: The left atrial appendage is more prominent than the right atrial appendage, and the left atrial septum has a thin bi-monthly valve. E. Left ventricle: The wall is thick, the apex of the heart is more blunt, the cavity is longer, and the aortic ostia have three and a half moon-like valves. Absent cardia.