Featured Research

from universities, journals, and other organizations

Dominant deer hinds choose the best food

Date:
July 20, 2012
Source:
Plataforma SINC
Summary:
When food is abundant, it seems that animals do not have to compete but dominant deer hinds still uphold rivalry and select the most nutritious food to maintain their status. This is the case according to a study carried out on the Albacete experimental deer farm in Spain.

The hinds chose the food according to energy and fat content.
Credit: SINC

When food is abundant, it seems that animals do not have to compete but dominant deer hinds still uphold rivalry and select the most nutritious food to maintain their status. This is the case according to a study carried out on the Albacete experimental deer farm in Spain.

Related Articles


Deer hinds (Cervus elaphus) have a hierarchical organisation system: the oldest and largest hold the most dominant positions. Therefore, a nutrient rich diet benefits the more dominant hinds, who have preferential access to the best food sources. This allows them to grow even bigger, improving their milk production and body condition.

Published in the PLoS One journal and headed by the University of Castilla-La Mancha (UCLM), the study demonstrates how even when food is in abundance, the dominant hinds select the best foods.

Carried out in 2009 on the Albacete experimental deer farm, the second most important in the world (after the one in New Zealand), the experiment lasted seven days. It involved observing the behaviour of 44 deer hinds when accessing food during the first hour, their selection of food components and their nutritional composition. 

The results reveal that the “dominant hinds used more time to feed during the first hour after the food was put out, they selected cereals and rejected food pellets (nutritiously low vegetable by-products),” as explained to SINC by Francisco Ceacero, lead author of the study and researcher at the department of Science and Agro-Forest and Genetics Technologies of the UCLM.

The hinds chose the food according to energy and fat content. According to Ceacero, “food quality gets lower and lower the further away we move from the time in which the food is put out. In this way, the dominant hinds receive more energy in their diet whereas their subordinates do still get to eat enough but only the poor quality food that is left behind.”

The same goes for cows and sheep

Although the discussion continues on the mechanisms that drive these animals to know how to select the best food that meets their requirements every time, the scientist ensures that “the preferential selection of certain foods and the total rejection of others is clear in both diet selection studies on wild animal populations and experiments in captivity.”

The experiment combined behavioural study techniques (hierarchy and food access observation), ecological study techniques (diet component selection) and nutrition study techniques (nutritional value of each food item and the dietary intake itself).

The team of authors, which also included Tomás Landete-Castillejos and Andrés José García from the Research Institute of Hunting Resources, suggests that the results are also applicable to other social ruminants like cows, sheep and goats.


Story Source:

The above story is based on materials provided by Plataforma SINC. Note: Materials may be edited for content and length.


Journal Reference:

  1. Francisco Ceacero, Andrés J. García, Tomás Landete-Castillejos, Jitka Bartošová, Ludek Bartoš, Laureano Gallego. Benefits for Dominant Red Deer Hinds under a Competitive Feeding System: Food Access Behavior, Diet and Nutrient Selection. PLoS ONE, 2012; 7 (3): e32780 DOI: 10.1371/journal.pone.0032780

Cite This Page:

Plataforma SINC. "Dominant deer hinds choose the best food." ScienceDaily. ScienceDaily, 20 July 2012. <www.sciencedaily.com/releases/2012/07/120720083024.htm>.
Plataforma SINC. (2012, July 20). Dominant deer hinds choose the best food. ScienceDaily. Retrieved November 21, 2014 from www.sciencedaily.com/releases/2012/07/120720083024.htm
Plataforma SINC. "Dominant deer hinds choose the best food." ScienceDaily. www.sciencedaily.com/releases/2012/07/120720083024.htm (accessed November 21, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Friday, November 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Baby Okapi Born at Houston Zoo

Raw: Baby Okapi Born at Houston Zoo

AP (Nov. 20, 2014) — The Houston Zoo released video of a male baby okapi. Okapis, also known as the "forest giraffe", are native to the Democratic Republic of the Congo in Central Africa. Video is mute from source. (Nov. 20) Video provided by AP
Powered by NewsLook.com
Your Complicated Job Might Keep Your Brain Young

Your Complicated Job Might Keep Your Brain Young

Newsy (Nov. 20, 2014) — Researchers at the University of Edinburgh found the more complex your job is, the sharper your cognitive skills will likely be as you age. Video provided by Newsy
Powered by NewsLook.com
Mysterious Glow Worms Found in the Amazon

Mysterious Glow Worms Found in the Amazon

Buzz60 (Nov. 20, 2014) — Wildlife photographer Jeff Cremer teamed up with entomologist Aaron Pomerantz and others to investigate a predatory glow worm found in the Amazon. Patrick Jones (@Patrick_E_Jones) explains. Video provided by Buzz60
Powered by NewsLook.com
Raw: Huge Snow Covers Buffalo Streets

Raw: Huge Snow Covers Buffalo Streets

AP (Nov. 20, 2014) — A new blast of lake-effect snow roared through western New York with thunder and lightning on Thursday, raising to nearly 6 feet the three-day total in parts of the Buffalo area. (Nov. 20) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins