• TABLE OF CONTENTS
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 Experiment
 Results
 Table 1 - Composition of experimental...
 Table 2 - Average daily feed, protein...
 Table 3 - Weight, height, girth...














Group Title: Department of Animal Science research report - Florida Agricultural Experiment Station ; AL-1978-6
Title: Influence of lysine intake on growth and development of yearling foals
CITATION PAGE IMAGE ZOOMABLE
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00073102/00001
 Material Information
Title: Influence of lysine intake on growth and development of yearling foals
Series Title: Department of Animal Science research report
Physical Description: 4 p. : ; 28 cm.
Language: English
Creator: Ott, E. A ( Edgar A )
Asquith, Richard L
Feaster, J. P
University of Florida -- Dept. of Animal Science
University of Florida -- Agricultural Experiment Station
Publisher: Florida Agricultural Experiment Station
Place of Publication: Gainesville Fla
Publication Date: 1978
 Subjects
Subject: Foals -- Feeding and feeds -- Florida   ( lcsh )
Proteins in animal nutrition   ( lcsh )
Lysine in animal nutrition   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
Statement of Responsibility: E.A. Ott, R.L. Asquith and J.P. Feaster.
General Note: Caption title.
General Note: "September, 1978."
Funding: Animal science research report (University of Florida. Dept. of Animal Science) ;
 Record Information
Bibliographic ID: UF00073102
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 80553297

Table of Contents
    Experiment
        Page 1
    Results
        Page 1
    Table 1 - Composition of experimental concentrates
        Page 2
    Table 2 - Average daily feed, protein and lysine intake of yearling foals
        Page 3
    Table 3 - Weight, height, girth and length gain of of yearling foals (196 days)
        Page 4
Full Text


Department of Animal Science Florida Agricultural
Research Report AL-1978-6 Experiment Station
September, 1978 age e,

INFLUENCE OF LYSINE INTAKE ON GRO TH FEB l i .
AND DEVELOPMENT OF YEARLING FO S u

E. A. Ott, R. L. Asquith and J. P. FJ'it n Utnv. of Florida

Protein quality has been shown to influence the growth and development of
yearling foals (Slade and Robinson, 1969; Breuer and Golden, 1971; Hintz et al.,
1971 and Ott, 1976). Lysine appears to be the limiting amino acid in most
typical horse diets, however, diets containing significant quantities of soy-
bean meal, milk protein or fish meal should provide adequate lysine. Results
of a recent study, however, suggest that under certain feeding situations,
lysine supplementation may result in growth rates in excess of those achieved
on soybean meal based diets (Ott, 1978).

This experiment was designed to determine whether yearling foals would
respond to lysine supplementation of a soybean meal based diet and whether
Brewers Dried Grains (BDG) supplemented with lysine would support growth com-
parable to a soybean meal based diet.

Experiment

Twenty-four yearling Thoroughbred and Quarter Horse foals were randomly
assigned within sex and breed outcome groups to three treatment groups. Each
group had 3 colts and 5 fillies. The groups were assigned to one of the follow-
ing grain rations: a) soybean meal, b) soybean meal + .2% lysine and c) Brewers
Dried Grains + .2% lysine. The grain rations (table 1) were fed individually
twice each day and Coastal Bermudagrass hay was group fed at a rate of 1.0% BW
per day. The foals were weighed and measured at the start of the experiment
and at 28-day intervals for 196 days.

Results

Grain ration consumption averaged 13.4 lbs per head per day for the dura-
tion of the trial. This was 1.67% BW. Hay consumption averaged 7.5 lbs per
head per day which was .94% BW. Thus, total feed intake averaged 20.9 lbs per
head per day and 2.61% BW. Therewereno significant differences between treat-
ment groups although the foals receiving the BDG consumed slightly less grain.
This level of feed intake is comparable to other studies at the University of
Florida (Ott, 1978) and at Texas A&M (Potter and Huchton, 1975; Householder et
al., 1977) when yearlings were handled under similar feeding conditions.

The grain rations were formulated to be comparable in energy, protein,
calcium and phosphorus. Analyses revealed only small variations (table 1).
The grain rations averaged 15.3% crude protein on a dry matter basis which was
13.3% on an as fed basis. The Coastal Bermudagrass hay contained 8.8% crude
protein on a dry matter basis. Protein intake averaged 1091 g per head per day
which exceeds the 760 to 900 g recommended for yearling foals with expected
mature weights of 1100 to 1320 lbs (NRC, !Q78). Lysine intake on the three ra-
tions was 49, 54 and 42 g/hd/day.


iData taken from experiment HN-771.
20tt, Animal Nutritionist, Univ. FL.; Asquith, DVM, Horse Res. Center, Ocala, FL.,
Feaster, Prof. Biochem., Nutr. Lab, Univ. FL., Gainesville.






Department of Animal Science Florida Agricultural
Research Report AL-1978-6 Experiment Station
September, 1978 age e,

INFLUENCE OF LYSINE INTAKE ON GRO TH FEB l i .
AND DEVELOPMENT OF YEARLING FO S u

E. A. Ott, R. L. Asquith and J. P. FJ'it n Utnv. of Florida

Protein quality has been shown to influence the growth and development of
yearling foals (Slade and Robinson, 1969; Breuer and Golden, 1971; Hintz et al.,
1971 and Ott, 1976). Lysine appears to be the limiting amino acid in most
typical horse diets, however, diets containing significant quantities of soy-
bean meal, milk protein or fish meal should provide adequate lysine. Results
of a recent study, however, suggest that under certain feeding situations,
lysine supplementation may result in growth rates in excess of those achieved
on soybean meal based diets (Ott, 1978).

This experiment was designed to determine whether yearling foals would
respond to lysine supplementation of a soybean meal based diet and whether
Brewers Dried Grains (BDG) supplemented with lysine would support growth com-
parable to a soybean meal based diet.

Experiment

Twenty-four yearling Thoroughbred and Quarter Horse foals were randomly
assigned within sex and breed outcome groups to three treatment groups. Each
group had 3 colts and 5 fillies. The groups were assigned to one of the follow-
ing grain rations: a) soybean meal, b) soybean meal + .2% lysine and c) Brewers
Dried Grains + .2% lysine. The grain rations (table 1) were fed individually
twice each day and Coastal Bermudagrass hay was group fed at a rate of 1.0% BW
per day. The foals were weighed and measured at the start of the experiment
and at 28-day intervals for 196 days.

Results

Grain ration consumption averaged 13.4 lbs per head per day for the dura-
tion of the trial. This was 1.67% BW. Hay consumption averaged 7.5 lbs per
head per day which was .94% BW. Thus, total feed intake averaged 20.9 lbs per
head per day and 2.61% BW. Therewereno significant differences between treat-
ment groups although the foals receiving the BDG consumed slightly less grain.
This level of feed intake is comparable to other studies at the University of
Florida (Ott, 1978) and at Texas A&M (Potter and Huchton, 1975; Householder et
al., 1977) when yearlings were handled under similar feeding conditions.

The grain rations were formulated to be comparable in energy, protein,
calcium and phosphorus. Analyses revealed only small variations (table 1).
The grain rations averaged 15.3% crude protein on a dry matter basis which was
13.3% on an as fed basis. The Coastal Bermudagrass hay contained 8.8% crude
protein on a dry matter basis. Protein intake averaged 1091 g per head per day
which exceeds the 760 to 900 g recommended for yearling foals with expected
mature weights of 1100 to 1320 lbs (NRC, !Q78). Lysine intake on the three ra-
tions was 49, 54 and 42 g/hd/day.


iData taken from experiment HN-771.
20tt, Animal Nutritionist, Univ. FL.; Asquith, DVM, Horse Res. Center, Ocala, FL.,
Feaster, Prof. Biochem., Nutr. Lab, Univ. FL., Gainesville.







Girth gains by the foals on the soybean meal ration were greater (P<.05)
than by the foals on the Brewers Dried Grain ration (table 3). Weight gains
by the foals on the two soybean meal rations were greater (P<.05) than those
receiving the Brewers Dried Grains at 84 and 112 days of the experiment.
Differences were still evident by the end of the test (196 days) but were too
small to be significant. Height and length gains were not different (P>.05)
for the three treatments.




TABLE 1. COMPOSITION OF EXPERIMENTAL CONCENTRATES


Grain Rations
CBH1 A B C
% % %
Corn 40.75 40.55 48.55
Oats 30.00 30.00 15.00
Soybean meal 11.00 11.00 -
Brewers dried grains 18.00
Wheat bran 10.00 10.00 10.00
Alfalfa, dehy 5.00 5.00 5.00
Bio Phos 1.00 1.00 1.00
Gr. limestone 1.00 1.00 1.00
Salt .50 .50 .50
Premix .50 .50 .50
Ca propionate .25 .25 .25
Lysine .20 .20


Analyses2
Dig. energy Mcal/lb3 .9 1.54 1.54 1.52
Crude protein, % 8.8 14.9 15.4 15.5
Calcium, % .56 ..67 .69 .67
Phosphorus, % .43 .51 .49 .52
Lysine, % .30 .71 .86 .64

Coastal Bermudagrass hay.
2Dry matter basis.
3Calculated from NRC, 1978.





















TABLE 2. AVERAGE DAILY FEED, PROTEIN AND LYSINE
INTAKE OF YEARLING FOALS


Rations
A B C

Grain intake, lbs 13.95 13.26 13.02
Hay intake, lbs 7.59 7.57 7.43
Total, Ibs 21.54 20.83 20.45

Grain intake, DM, Ibs 12.31 11.70 11.50
Hay intake, DM, lbs 6.81 6.79 6.67
Total, DM, lbs 19.12 18.49 18.17

Protein from grain, g 834 819 810
Protein from hay, g 272 272 267
Protein total, g 1106 1091 1077

Lysine from grain, g 40 46 33
Lysine from hay, g 9 9 9
Lysine total, g 49 54 42

Grain intake per 100 lb BW 1.70 1.68 1.64
Hay intake per 100 lb BW .92 .96 .94
Total feed per 100 lb BW 2.62 2.64 2.58






















TABLE 3. WEIGHT, HEIGHT, GIRTH AND LENGTH GAIN
OF YEARLING FOALS (196 DAYS)


Rations
A B C
No. 8 8 8

Initial weight, lb 684.8 652.4 668.0
Final weight, lb 959.5 922.6 918.1
Weight gain, lb 274.7 270.2 250.1

Initial height, in 54.39 53.89 54.00
Final height, in 58.13 57.57 57.20
Height gain, in 3.74 3.68 3.20

Initial girth, in 59.49 59.01 59.10
Final girth, in 68.01 66.49 65.79
Girth gain, in 8.52a 7.48b 6.69

Initial length, in 54.26 53.59 54.02
Final length, in 59.94 58.97 59.88
Length gain, in 5.68 5.38 5.86


abcomparable numbers
different (P<.05).


with unlike superscripts are




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