Impacts of Reproductive Technologies on Beef Production in the United States

2013 ◽  
pp. 97-114 ◽  
Author(s):  
Carl Dahlen ◽  
Jamie Larson ◽  
G. Cliff Lamb
Keyword(s):  
United States ◽  
The United States ◽  
Reproductive Technologies ◽  
Beef Production

114 What Is the Impact of Dairy Influence Cattle on the Traditional Beef Industry Structure?

2021 ◽  
Vol 99 (Supplement_1) ◽  
pp. 38-39
Author(s):  
Bradley J Johnson ◽  
Luke Fuerniss
Keyword(s):  
Dairy Cows ◽  
Dairy Herd ◽  
The United States ◽  
Reproductive Technologies ◽  
Industry Structure ◽  
Data Availability ◽  
Beef Production ◽  
Feed Conversion ◽  
Beef Industry ◽  
The Impact

Abstract The U.S. cow inventory includes approximately 31 million beef cows and 9 million dairy cows, so flow of cattle from dairies into beef production influences the traditional beef industry structure. Dairy-influenced cattle have historically entered the beef supply chain as cull cows and calf-fed Holstein steers. Culled dairy cows account for approximately half of the cows harvested in the United States annually. Fed steers and heifers of dairy influence are estimated to account for 15% of annual steer and heifer slaughter. Advancements in data availability, genomics, and reproductive technologies have enabled more precise selection of dairy replacement heifers and more pregnancies to be allocated to a terminal sire. Recently, the use of beef semen to breed dairy cows that are not desirable for producing replacement heifers has become more widespread. Beef-on-dairy calves are often moved to calf ranches shortly after birth where they are weaned and grown before transitioning to traditional grow yards or feedlots. In comparison to traditional range beef production, calves of dairy origin are weaned at a younger age, have more restricted mobility early in life, and are fed a delivered ration for a greater number of days. While carcasses of dairy-originated fed cattle excel in subcutaneous leanness and marbling, calves originating from dairies typically experience greater morbidity, poorer feed conversion, and poorer dressed yields compared to native fed cattle. Future opportunities to optimize beef production from the dairy herd include refining sire selection to consistently produce high quality calves, reducing variation in calfhood management, and identifying optimal nutrition and growth technology programs for calves from dairies.

scholarly journals Is Information Power? Comparing Anonymous and Open Egg Donation

2017 ◽  
Vol 22 (2) ◽  
pp. 130-141 ◽  
Author(s):  
Amy Speier
Keyword(s):  
United States ◽  
Czech Republic ◽  
Assisted Reproductive Technologies ◽  
The United States ◽  
Reproductive Technologies ◽  
Fertility Treatment ◽  
Egg Donation ◽  
Gamete Donation ◽  
The Czech Republic ◽  
Egg Donor

Both the Czech Republic and the United States are destinations for cross-border reproductive travellers. For North Americans, including Canadians, who opt to travel to the Czech Republic for IVF using an egg donor, they are entering a fertility industry that is anonymous. This makes the Czech Republic different from other European countries that necessitate open gamete donation, as in Austria, Germany and the United Kingdom. For reproductive travellers coming to the United States for fertility treatment, there is a wider menu of choices regarding egg donation given the vastly unregulated nature of the industry. More recently, professionals in the industry are pushing for ‘open’ egg donation. For intended parents traveling to either location seeking in vitro fertilization using an egg donor, they must choose whether or not to pursue open or closed donation. As pre-conception parents, they navigate competing discourses of healthy parenting of donor-conceived offspring. They must be reflexive about their choices, and protective when weighing their options, always keeping their future child's mental, physical and genetic health in mind. Drawing from ethnographic data collected over the course of six years in the United States and the Czech Republic, this paper will explore both programs, paying special attention to the question of how gamete donation and global assisted reproductive technologies intersect with different notions about healthy pre-conception parenting.

scholarly journals Sunera Thobani: A Very Public Intellectual

2012 ◽  
Vol 8 (2) ◽  
Author(s):  
William K. Carroll
Keyword(s):  
United States ◽  
Critical Race Theory ◽  
The United States ◽  
Reproductive Technologies ◽  
The Philippines ◽  
Public Intellectual ◽  
Media Representations ◽  
Critical Race ◽  
Race Theory ◽  
Social Sciences And Humanities

<p>Sunera Thobani is a formidable activist and scholar. Through decades of activism and scholarship, spanning the globe from East Africa to Canada, via England and the United States, she has developed and applied a critical race feminist and anti-imperialist analysis of world capitalism and colonialism. As an activist, she is probably best known as the former President of the National Action Committee on the Status of Woman, Canada&rsquo;s then largest feminist organization. During her tenure she sought to make anti-racism central to feminist struggles. In her academic work, she has developed critical race theory to cast new light on the dynamics around globalization, violence against women, reproductive technologies, social programmes, immigration and nation-building, and colonialism and war. In her research and teaching, she consistently combines her scholarship with community activism, including through her work at the Centre for Race, Autobiography, Gender and Age (RAGA), which she directs and which features active collaboration among community activists and university scholars and students. She is a founding member of the Canada-wide alliance, Researchers and Academics of Colour for Equity.</p><p>Sunera Thobani was educated at universities in England, the United States and received her PhD from Simon Fraser University in Canada. She is the author of numerous articles, both scholarly and for a more general public. Arguably her most well-known intervention is &ldquo;War Frenzy,&rdquo; a 2001 speech calling on women across Canada to oppose the Canadian support of the American-led invasion into Afghanistan. This intervention is now reproduced in a book of Great Canadian Speeches (2004). A frequently invited speaker in both her academic and activist capacities, she has addressed audiences across Canada, as well as in Austria, China, Denmark, England, India, Malaysia, Mexico, the Palestine Occupied Territories, the Philippines, and the United States. Sunera Thobani has co-edited several books on critical race theory and feminism and is the author of the widely-read Exalted Subjects: Studies in the Making of Race and Nation in Canada (2007). Her forthcoming Social Sciences and Humanities Research Council (SSHRC) supported book is tentatively titled <em>Media Representations of Gender and the War on Terror</em>.</p><p><br />This interview was conducted by William K. Carroll in Vancouver, British Columbia in February 2012.</p>

Eugenics, Reproduction, and Asian American Literature

2019 ◽  
Author(s):  
Asha Nadkarni
Keyword(s):  
United States ◽  
American Literature ◽  
Asian American ◽  
Population Control ◽  
The United States ◽  
Reproductive Technologies ◽  
Asian American Literature ◽  
Asian American Women ◽  
Asian Populations ◽  
Asian Immigration

Asian American literature has capaciously explored the issues of gender, sexuality, and reproduction that have been so foundational to Asian American racial formation. It has likewise engaged, directly or indirectly, with “eugenics,” a pseudoscience by which nation states sought to improve their populations through managing reproduction. Eugenics, a term coined by Charles Darwin’s cousin Sir Francis Galton in 1883, spans the late 19th to the early 21st centuries, where it continues in the form of population control and the “new” eugenics of genetic and reproductive technologies. In some national sites eugenics was aligned with feminist movements for birth control, whereas in others, such as the United States, they were largely opposed. Nonetheless, eugenic feminists argued that women’s right reproduction was the necessary mechanism by which women should gain rights within the state; as a formation, moreover, eugenic feminism specifically targeted Asian American women as standing in the way of US feminist advance. As such, one of the key ways eugenics was practiced in the United States in relationship to Asian populations was through immigration policy. The history of Asian exclusion in the United States therefore speaks to a larger eugenic project predicated on the notion that Asian immigrants embodied a public health threat in terms of diseases and deviant sexualities of various sorts. The 1965 Immigration and Naturalization Act opened up Asian immigration to the United States and also gave rise to a new set of stereotypes, gendered and otherwise, about Asian Americans as model minorities. Asian American literature has critically mined these issues, with some Asian American literature acceding to eugenics by stressing an assimilationist politics and with other works challenging it by critiquing eugenics’ reproductive logic of purity.

98 What We Think We “know” About Beef X Dairy Crossbred Cattle in the Feedlot

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 53-54
Author(s):  
Tara L Felix
Keyword(s):  
United States ◽  
Growth Performance ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
The United States ◽  
Beef Production ◽  
Feedlot Performance ◽  
Early Maturing ◽  
Holstein Calves ◽  
Daily Gain

Abstract To increase profitably, dairy farms across the United States have rapidly adopted breeding a portion of their cows to beef sires, generating crossbred progeny. The resulting progeny have, in some cases, increased the value of the calf to the dairy, due to their perceived potential for improved growth, feed efficiency, and carcass characteristics for beef production. U.S. research is behind our European counterparts in recommending the appropriate beef sires for dairy matings, and U.S. semen trends show Angus sales over many other breeds. However, Kempster et al. (1982) reported that calves sired by British breed bulls were actually at a disadvantage in growth performance compared to even purebred Holstein calves. Finnish researchers agreed, reporting that the resulting crossbreds from Aberdeen Angus and Hereford bulls were extremely variable, making them undesirable for beef production. However, resulting crossbred calves from late maturing breed types (Charolais, Limousine, and Simmental) had better average daily gain and carcass characteristics than their counterparts from early maturing breeds (Huuskonen et al., 2013). A comprehensive review of early crossbred systems similarly suggested that calves sired by Continental breeds, like Charolais, had an advantage in the feedlot and the packing house (Shank, 2003). Going a bit further, another European study examined the used of 3 beef breeds (Belgian Blue, Limousine, and Galacian Blonde) known for heavy muscling, but not common in the United States, for use as crossbreeding sires (Fouz et al., 2012). Holstein cows bred to Belgian Blue sires had the greatest difficulty calving; however, calving difficulties were reduced with increasing dam age (Fouz et al., 2012). Unfortunately, that trial did not go on to evaluate feedlot performance. Thus, there remains a dearth of scientific references for crossbred mating decisions as well as subsequent growth performance and carcass outcomes.

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