| A | B |
|---|
| The science in livestock production that studies the way in which traits of parents are passed on to the offspring is? | genetics |
| Which species of livestock has a diploid number (number of pairs of chromosomes) of 19? | swine |
| What takes place when a sperm cell fromth male reaches an egg cell from the female? | fertilization |
| Which trait for beef cattle has the highest heritability estimate? | rib eye area |
| Which trait in swine has the lowest heritability estimate? | birth weight |
| Genotype refers to the: | combination of genes |
| When chromosomes pairs are divided in such a manner tht each gamete has one of each type of chromosome, the process is called? | meiosis |
| The characteristics of an animal that are inheritable are passed from one generation to the next by? | genes |
| Sperm cells are produced in the? | testicles |
| The release of the egg cell from the ovary is called? | ovulation |
| The average length of gestation sheep is? | 148 days |
| The length of the estrus cycel for sheep is? | 16 days |
| The diploid number (pairs of chromosomes) for sheep is? | 27 |
| The average age for cattle to reach puberty is? | 6-8 months |
| The first successful cloning of a vertebrate organism from mature body cells occurred in 1996 with which species? | sheep |
| Which is NOT a potential benefit of genetic engineering in livestock production? developing disease resistant animals, developing new species of livestock, specifying th sex of an animal before conception, developing new drugs and vaccines | developing new species of livestock |
| The process of inducing cows to produce several oocytes during each estrus cycle is: | superovulation |
| Porcine somatotropin (pST) is a protein produced in which gland of the pig | pituitary |
| Mating animals of the same breed is called? | straightbreeding |
| The mating of two animals that can be traced back to one common ancestor is? | linebreeding |
| What is a common disqualification in rules for registering animals in a breed association? | color markings |
| The majority of beef cow her opertions have how many cows? | 1 - 49 head |
| Which factor does NOT affect the demand for beef? number of people, availability of imported beef, income per person, meat preferences | availability of imported beef |
| What is a disadvantage of raising beef? | time required to develop a cattle herd |
| Which of th listed regions of the United States produces the most beef cattle? Pacific, Cornbelt, North Plains, Southeast | North Plains |
| How many breeds of beef cattle are available to producers in the United States? | 50+ |
| The Simmental breed of beef cattle which dates back to the Middle Ages, originated in which country? | Switzerland |
| Which breed of cattle was the first to be imported to the United States? | Shorthorn |
| Which breed of cattle is classified as a Bos indicus type? | Brahman |
| What percent of cash income from livestock and crops come from beef in the United States? | 18% |
| Which breed of cattle was in existence in Italy before the time of the Roman Empire? | Chianina |
| In 1927, the United States Congress appropriated money for which breed of cattle that were almost extinct? | Texas Longhorn |
| The Beef Promotion and Research Act of 1985 estabilished a checkoff amount for every head of beef sold in the United States of? | $1.00 |
| The method of marketing where cattle are sold by public bidding to the highest bidder is? | auction markets |
| Shrinkage of cattle as they are moved to market is NOT affected by? | market prices |
| The country of origin labeling became mandatory in what year? | 2004 |
| A beef carcass with slightly abundant marbling with a maturity level A will be what grade? | Prime |
| Which beef cattle yeild grade indicates the highest yield of lean meat? | Yield Grade 1 |
| Which of the following states produces the most swine? Missouri, Minnesota, North Carolina, Oklahoma | North Carolina |
| Which breed of swine has the highest performance in average litter size ratio? | Yorkshire |
| Which breed of swine was developed in the United States? | Poland China |
| Approximately what percent of the market hogs sold in the United States are priced on the basis of carcass merit? | 70% |
| A futures contract for marketing hogs is based on units. One trading unit equals? | 30,000 pounds |
| The traditionally recommended weight for marketing slaughter hogs has been? | 200-220 pounds |
| Which state produces the most sheep and lambs? California, Ohio, Oklahoma, Wyoming | California |
| The majority of sheep operations produce? | less than 100 head |
| Which breed of sheep is classified as a fine wool breed? Hampshire, Rambouillet, Southdown, Corriedale | Rambouillet |
| Lambs under three months of age weighing less than 60 pounds sold in specialty markets between Christmas and Easter are called? | Hothouse lambs |
| Lambs prices average higher during which period of the year? | March through May |
| The thickness of fat over the ribeye determines the yield grade for all slaughter sheep. A slaughter sheep with 0.26 to 0.35 inches of fat will grade? | Yield Grade 3 |
