Question

1. Compare metabolic and digestive wastes in Fetal Pigs

2. List the structures, in order, that metabolic waste travels as it leaves a nephron and exits the adult pig

Answer 1

1.

Metabolic waste in fetal pigs is the left over products of both catabolism and anabolism. This waste includes salts, phosphates, sulfates, excess substances, and nitrogenous wastes like urea which are eliminated through urine . All the metabolic wastes are excreted in a form of water solutes through the excretory organs (nephridia, Malpighian tubules, kidneys), with the exception of CO2, which is excreted together with the water vapor throughout the lungs. The elimination of these compounds enables the chemical homeostasis of the organism.

Waste products from the digestive process include undigested parts of food, fluid, and older cells from the lining of your GI tract.The pig has a digestive system which is classified as monogastric or nonruminant. Humans also have this type of digestive system. They have one stomach.In fetal pigs large intestine leads into the rectum, a tube that runs posteriorly along the dorsal body wall. The rectum carries wastes to the opening called the anu$ where they are eliminated.

2.

The excretory system, as observed in the fetal pig, composes of the kidneys, the renal veins and arteries, ureters, and the urethra. The kidneys are large, bean-shaped organs that lie against the dorsal wall of the abdominal cavity underneath the organs of the digestive tract. The function of the kidneys is to filter waste from the blood and to regulate the blood's salt and water levels. Urine leaves the bladder via the urethra to the exterior. Calculi - These may be seen as powder like deposits on the vulva of sow or as small stones in the urine. The bladder is used as a casing for several traditional food items, including the sausages known as ventricina and sobrassada.

This descriptive cross-sectional study assessed thecharacteristics of the excretory system of 130 pairs of kidneys of commercial breeds of pigs (Pietrain,Landrace Belga and Large White mixed breeds) with a mean weight of 85–90 kg and a mean age of 5 months destined for slaughter, obtained from Frigorífco Vijagual of Bucaramanga, Colombia. The organs were subjected to an exsanguination process for 6 hour in water resource. morphological
characteristics of the pig excretory system were typifed as A and B. Type A presents with major cranial and caudal calyxes, which in turn receive drainage from minor calyxes from the ventral and dorsal portions of the kidney. The infundibula of the major cranial and caudal calyxes can be either long and narrow, or short and wide (type A1 and A2). Type B presents with calyxes draining directly into the renal pelvis independently of cranial and caudal calyxes. This type has two expressions: type B-1, where in the mid renal area is drained by a group of major calyxes, independent from the cranial and caudal calyxes, ending in the renal pelvis; and type B-2, characterised by minor calyxes draining the mid region and ending directly in the renal pelvis.At bottom there is structure of excretoery system of pigs.