When do cows reach "peak milk"? When do cows reach "peak milk"? Early lactation Mid lactation Late lactation Dry period

what stage of production do dairy cattle typically experience peak milk production?Calf rearingLate lactationHeifer developmentFirst calving

Lactation ration is fed cattle during

Who raises the cow in its earliest phase?1 pointFeedlot OperatorThe Packer/ProcessorThe ProducerThe Canadian Beef Grading Agency

Which discovery best supports the hypothesis that evolution of the lactase-persistence trait was driven by dairying, the use of milk as a source of adult nutrition in pastoralist cultures?Group of answer choicesPresent day milk fats and animal fats can be distinguished using carbon isotope analysis and gas chromatography.Ancient pots used to hold milk are about the same age as the lactase persistence mutations.The lactase gene is present in both humans and domesticated animals.Scientists have discovered unique mutations for lactase persistence in different cultures.

[1] Milk consists of water, milk fat, and skim solids. Skim solids include protein, lactose, minerals, and trace elements. The average percentages of both milk fat and skim solids in farm milk (cows' milk from dairy farms) have increased in the last two decades. In 2000, U.S. farm milk contained 3.68 percent milk fat and 8.72 percent skim solids on average. By 2020, the milk-fat percentage had grown to 3.95 percent, and the skim-solids percentage had increased to 8.94 percent. For skim solids, content increased gradually from 2000 to 2020, while milk-fat content began rising in 2011, after remaining relatively steady from 2000 to 2010 (see figure below).Highlights:Density of nutrients in farm milk has grown in the last two decades. In 2019, the milk-fat content was 3.95 percent, while the skim-solids content was 8.94 percent.In response to an increase in demand for products with high milk-fat content, dairy farmers have selected breeds, adjusted feeds, and made use of improved genetics to increase milk fat produced by dairy cows.Cheese is the dairy product category accounting for the largest percentage of the U.S. milk-fat supply, and that percentage has been growing.Fluid beverage milk is the dairy product category accounting for the largest percentage of the U.S. skim-solids supply, but that percentage has been declining.[2] The Dietary Guidelines for Americans, published by USDA and the U.S. Food and Drug Administration, recommend "fat-free or low-fat milk, yogurt, and cheese, and/or lactose-free versions and fortified soy beverages and yogurt as alternatives." While the Dietary Guidelines continue to recommend low-fat dairy, some studies receiving attention in the general media have indicated less of a health risk in milk-fat consumption than had been previously perceived. Other studies have suggested that there are nutritional benefits in milk fat. As a result, demand for higher-fat milk products has increased substantially over the last decade. Through an adjustment in production practices or shifting to breeds that produce higher fat milk, farmers have been able to increase fat content in the milk. While Holstein cows—the iconic black and white (or sometimes red and white) dairy cows—remain the predominant species of dairy cows in the United States, farms are increasingly shifting to other breeds, such as Jersey cows, which produce higher-fat milk naturally. Improvements in genetics of the major breeds and higher quality livestock feeds also have contributed to the increasing richness of milk....Fluid Milk Has the Largest Allocation of Skim Solids, But for How Much Longer?[3] In 2019, the total supply of skim solids available for dairy processing and manufacturing was 19.5 billion pounds, 33 percent more than in 2000. Fluid milk accounts for the largest portion of skim-solids use, but that allocation has been declining over time. If this trend continues, cheese may overtake fluid milk as the largest use of skim solids within the next few years.[4] In 2019, skim solids used in fluid milk production represented 22 percent of the total supply, down 12 percentage points from 2000. Skim solids in cheese represented 19 percent of the total supply of skim solids in 2019, an increase of almost 4 percentage points from 2000. Skim solids for whey products (including dry whey, whey protein concentrate, lactose, and others) increased by about 6 percentage points. This growth is attributed to an increase in cheesemaking (because whey is a byproduct of cheesemaking) and growing whey product exports. Skim solids for use in dry milk products increased by 4 percentage points, largely because of growing export demand for skim milk powder.10Select the correct text in the passage.Read the excerpt from paragraph 2. Which detail best shapes the idea that public perception about milk-fat consumption is changing?[2] While the Dietary Guidelines continue to recommend low-fat dairy, some studies receiving attention in the general media have indicated less of a health risk in milk-fat consumption than had been previously perceived. Other studies have suggested that there are nutritional benefits in milk fat. As a result, demand for higher-fat milk products has increased substantially over the last decade. Through an adjustment in production practices or shifting to breeds that produce higher fat milk, farmers have been able to increase fat content in the milk.