The effects of feed bunk competition on the feed sorting behavior of close – up dry cows
نویسنده:
, , , , , , ,سال
: 2008
چکیده: ABSTRACT
The objectives of this research were to describe the
feed sorting, feeding behavior, and feed intake of cows
consuming a close-up ration and to determine if these
behaviors are affected by competition for access to the
feed bunk. Thirty-six dry Holstein cows, consuming a
close-up total mixed ration diet, were assigned to 1 of
2 treatments: 1) noncompetitive (1 cow/feed bin) or 2)
competitive (2 cows/feed bin). Dry matter intake, feeding
behavior, and sorting behavior were monitored for
each feed bin on 4 separate days during wk 2 and 3
before the anticipated calving dates of the cows. Fresh
feed and orts were sampled daily from each bin and
were subjected to particle size analysis. The particle
size separator consisted of 3 screens (18, 9, and 1.18
mm) and a bottom pan resulting in 4 fractions (long,
medium, short, and fine). Sorting was calculated as the
actual intake of each particle size fraction expressed as
a percentage of the predicted intake of that fraction.
Regardless of treatment, the cows sorted against long
particles and for short and fine particles. Competition
at the feed bunk had no effect on the sorting behavior,
dry matter intake, or feeding time of the cows, but did
dramatically increase the feeding rate of the cows. The
competitively fed cows also had fewer meals per day,
and tended to have larger and longer meals. Our results
suggest that increased competition at the feed bunk
promotes feeding behavior patterns that will likely increase
the between-cow variation in composition of total
mixed ration consumed.
The objectives of this research were to describe the
feed sorting, feeding behavior, and feed intake of cows
consuming a close-up ration and to determine if these
behaviors are affected by competition for access to the
feed bunk. Thirty-six dry Holstein cows, consuming a
close-up total mixed ration diet, were assigned to 1 of
2 treatments: 1) noncompetitive (1 cow/feed bin) or 2)
competitive (2 cows/feed bin). Dry matter intake, feeding
behavior, and sorting behavior were monitored for
each feed bin on 4 separate days during wk 2 and 3
before the anticipated calving dates of the cows. Fresh
feed and orts were sampled daily from each bin and
were subjected to particle size analysis. The particle
size separator consisted of 3 screens (18, 9, and 1.18
mm) and a bottom pan resulting in 4 fractions (long,
medium, short, and fine). Sorting was calculated as the
actual intake of each particle size fraction expressed as
a percentage of the predicted intake of that fraction.
Regardless of treatment, the cows sorted against long
particles and for short and fine particles. Competition
at the feed bunk had no effect on the sorting behavior,
dry matter intake, or feeding time of the cows, but did
dramatically increase the feeding rate of the cows. The
competitively fed cows also had fewer meals per day,
and tended to have larger and longer meals. Our results
suggest that increased competition at the feed bunk
promotes feeding behavior patterns that will likely increase
the between-cow variation in composition of total
mixed ration consumed.
کلیدواژه(گان): Key words: competition,sorting,dry cow
کالکشن
:
-
آمار بازدید
The effects of feed bunk competition on the feed sorting behavior of close – up dry cows
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contributor author | علی حسین خانی | en |
contributor author | تی جی دوریس | en |
contributor author | کا ال پرودفوت | en |
contributor author | رضا ولی زاده | en |
contributor author | دی ام ویرا | en |
contributor author | ام آ ونکیسرلینک | en |
contributor author | ali hosseinhhani | fa |
contributor author | Reza Valizadeh | fa |
date accessioned | 2020-06-06T13:25:52Z | |
date available | 2020-06-06T13:25:52Z | |
date issued | 2008 | |
identifier uri | http://libsearch.um.ac.ir:80/fum/handle/fum/3354552 | |
description abstract | ABSTRACT The objectives of this research were to describe the feed sorting, feeding behavior, and feed intake of cows consuming a close-up ration and to determine if these behaviors are affected by competition for access to the feed bunk. Thirty-six dry Holstein cows, consuming a close-up total mixed ration diet, were assigned to 1 of 2 treatments: 1) noncompetitive (1 cow/feed bin) or 2) competitive (2 cows/feed bin). Dry matter intake, feeding behavior, and sorting behavior were monitored for each feed bin on 4 separate days during wk 2 and 3 before the anticipated calving dates of the cows. Fresh feed and orts were sampled daily from each bin and were subjected to particle size analysis. The particle size separator consisted of 3 screens (18, 9, and 1.18 mm) and a bottom pan resulting in 4 fractions (long, medium, short, and fine). Sorting was calculated as the actual intake of each particle size fraction expressed as a percentage of the predicted intake of that fraction. Regardless of treatment, the cows sorted against long particles and for short and fine particles. Competition at the feed bunk had no effect on the sorting behavior, dry matter intake, or feeding time of the cows, but did dramatically increase the feeding rate of the cows. The competitively fed cows also had fewer meals per day, and tended to have larger and longer meals. Our results suggest that increased competition at the feed bunk promotes feeding behavior patterns that will likely increase the between-cow variation in composition of total mixed ration consumed. | en |
language | English | |
title | The effects of feed bunk competition on the feed sorting behavior of close – up dry cows | en |
type | Journal Paper | |
contenttype | External Fulltext | |
subject keywords | Key words: competition | en |
subject keywords | sorting | en |
subject keywords | dry cow | en |
journal title | Journal of Dairy science | en |
journal title | Journal of Dairy Science | fa |
pages | 1115-1121 | |
journal volume | 0 | |
journal issue | 91 | |
identifier link | https://profdoc.um.ac.ir/paper-abstract-1004228.html | |
identifier articleid | 1004228 |