'Domesticated' is used in Linguée to refer to other animals. I'm not entirely sure that this is the best answer.

In the Portuguese bullfight, which I saw in Lisbon many years ago, at the end of the show they brought out the "gado manso" to lead the bull out of the ring. They were wearing cowbells and gently herded him back "home".

These were the most common terms during my online research.

--------------------------------------------------
Note added at 2 horas (2016-03-28 10:01:24 GMT)
--------------------------------------------------

Ex.:

http://oldfarmphotos.blogspot.com.br/2015/12/thirty-cattle-b...

and

http://www.fennbrahmans.net/cattlebehavior.htm

--------------------------------------------------
Note added at 3 hrs (2016-03-28 11:07:35 GMT)
--------------------------------------------------

Entendo, Tania. Na maioria das referências que vi, "manso" e "bravo" são termos usados para descrever o temperamento do animal, ou seja, o nível de agressividade.

Ex.:

http://www.crvlagoa.com.br/upload/carta_apresentacao_paint_2...

e) Temperamento: Nota absoluta, com escores 1 (animal extremamente
manso), 2, 4 e 5 (animal extremamente bravo).

Se for isso, acredito que "gentle" e "docile" sejam termos bastante adequados para a tradução.

No entanto, existe a chance de o termo estar sendo usado com algum outro sentido. Como você tem o material completo na mão, está em melhores condições de avaliar se essa tradução seria adequada ou não.

De qualquer forma, fica a sugestão. Uma ótima semana!

tamed - not wild- not afraid of people - does not react when handled

'domesticated' isn't quite the right word as any animal that is ''domesticated ' lives in a house with humans, such as dogs or cats;
'gentle' is a completely inappropriate word to use with cattle, and while some cattle may be docile, this a word mainly applied to the general temperament of animals both wild and domestic, hence 'tame' would be more usual to my ears, as it implies animals which have become more homogeneous to humans over the course of their evolution:


taming wild calves - Homesteading Today
www.homesteadingtoday.com › Livestock Forums › Cattle
5 Jan 2010 - 18 posts - ‎13 authors
I believe, that there ARE animals that are nearly impossible to tame, and if you get those type tamed that they will never be trustworthy.
How to tame a cow or calf? - Homesteading Today
www.homesteadingtoday.com › Livestock Forums › Cattle
3 Nov 2011 - 12 posts - ‎9 authors
Getting ready to buy our first cow or calf to be our family milk cow. We haven't found "the one" yet, but are definately going with the.