III. Mating System. Analyze the mating system of the swine industry as shown in the figure below. Landrace and Large White breeds are known for reproduction traits, while the colored breed, Duroc is known for production and carcass quality traits. LANDRACE LARGE WHITE DUROC Great Grand Line Line Line Parent Stocks LANDRACE X LARGE WHITE Grand Parent Stocks F1 CROSSBRED DUROC Parent Stocks FEMALES 5o% Landrace - 50% Large White MARKET PIGS so0% Duroc - 25% Landrace - 25% Large White Answer the following: A. What would be the expected reproductive performance of F crossbred females compared to its parental purebred? Why do you say so? B. Why cross F1 crossbred females with a Duroc boar to produce market pigs? What principle is at work here?
III. Mating System. Analyze the mating system of the swine industry as shown in the figure below. Landrace and Large White breeds are known for reproduction traits, while the colored breed, Duroc is known for production and carcass quality traits. LANDRACE LARGE WHITE DUROC Great Grand Line Line Line Parent Stocks LANDRACE X LARGE WHITE Grand Parent Stocks F1 CROSSBRED DUROC Parent Stocks FEMALES 5o% Landrace - 50% Large White MARKET PIGS so0% Duroc - 25% Landrace - 25% Large White Answer the following: A. What would be the expected reproductive performance of F crossbred females compared to its parental purebred? Why do you say so? B. Why cross F1 crossbred females with a Duroc boar to produce market pigs? What principle is at work here?
Chapter20: Make Room For The Ruminants
Section: Chapter Questions
Problem 18MC
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