Please use this identifier to cite or link to this item: http://hdl.handle.net/10174/29379

Title: Calf-Sex Influence in Bovine Milk Production
Authors: Quaresma, Miguel
Payan-Carreira, Rita
Editors: Aral, Faruk
Payan-Carreira, Rita
Quaresma, Miguel
Keywords: sex-biased milk production
secondary-sex effects
cattle
production system
Issue Date: 8-Oct-2020
Publisher: InTechopen
Citation: Miguel Quaresma and R. Payan-Carreira (October 8th 2020). Calf-Sex Influence in Bovine Milk Production, Animal Reproduction in Veterinary Medicine, Faruk Aral, Rita Payan-Carreira and Miguel Quaresma, IntechOpen, DOI: 10.5772/intechopen.93966. Available from: https://www.intechopen.com/books/animal-reproduction-in-veterinary-medicine/calf-sex-influence-in-bovine-milk-production
Abstract: The main source of incomes in a dairy farm is milk sales, and any factor altering the production affects the farmers’ income significantly. According to the Trivers-Willard hypothesis, if the cows’ systems are generally good and offer competitive conditions, they produce more milk for bull calves. They also suggest that cows in a worse condition or of a genetically diverging strain invest more milk in heifer calves. The existence of a sex-bias in cows’ milk production remains controversial even if it would open new insights on the economic impacts of using sex-sorted semen to enhance farm productivity. Sex-biased milk production in cows can vary, favoring one sex or the other and, sometimes, none. It seems to favor females in intensive production systems, while in other less intensive systems, this effect seems to disappear. This chapter intends to address available evidence on the sex-biased cows’ milk production and discuss why further research forecasting this issue is needed, including other cattle populations and correlating the investment strategy with an animal welfare index. Besides, other factors, such as different housing and feedings, can impact the calf-sex milk production bias through pathways still to be understood.
URI: https://www.intechopen.com/books/animal-reproduction-in-veterinary-medicine/calf-sex-influence-in-bovine-milk-production
http://hdl.handle.net/10174/29379
Type: bookPart
Appears in Collections:MED - Publicações - Capítulos de Livros

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