S0 O . .. .
Department of Animal Science Florida Agricultural
\ ,iMr Mimeograph Series No. AN70-10 Experiment Station-
-I/ May, 1970 JUN 29 1970 Gainesville, Florida
CANE MASSES FOR GROWING SWINE
I.F.A.S. Univ. of Flori49
G. E. C o-and- D- Walla e -
Results of previous experiments (Fla. Ani. Sci. Mimeo. No. 69-13) indicated
that young pigs 2 to 5 weeks of age could readily utilize diets that contained
up to 20% cane molasses but an adaptation period may be required if higher dietary
levels are used. The objective of this study was to evaluate-gain, feed efficiency
and nutrient digestibility by growing swine fed diets containing various levels
of cane molasses.
Forty pigs averaging 28 Ibs. were allotted to 5 treatments from outcome
groups formed on the basis of litter and initial weight. The pigs were maintained
in individual concrete-floored pens for a 49-day experimental feeding period.
Feed and water were available ad libitum.
The composition of the diets is presented in table 1. Chromic oxide was
incorporated into all diets during the final week and fecal samples were collected
from each pig the 4th and 5th day following chromic oxide addition. Blood samples
were collected from each pig on the final day of the experiment. The data were
analyzed statistically by analysis of variance and treatment means evaluated
according to accepted procedures.
Results and Discussion
A summary of the performance data is presented in table 2.
Pigs fed the diet containing 40% molasses gained significantly less than
those given the 0 or 20% molasses diets. However, the absence of significant
differences between the 0, 10 and 20% groups,the 10, 20 and 307. groups and the
10, 30 and 40% groups illustrates that increasing levels of dietary molasses does
not necessarily result in a reduction of gain. A similar situation was found
with the feed consumption and feed efficiency data in that although differences
were found between treatments no definite relationship between these criteria and
dietary molasses level was evident.
Digestibility of dry matter, ether extract and protein was significantly
affected by level of dietary molasses. Neither dry matter nor ether extract
digestion coefficients showed a close association with dietary molasses levels.
With protein, a digestion-molasses level relationship was established. Pigs given
the 0% molasses diet had a larger coefficient than pigs fed diets containing
molasses at any level; coefficients for those fed the 10% molasses diet were larger
than the 20, 30 and 40% levels; the coefficients for the three highest levels of
molasses were similar.
1/ Combs and Wallace, Animal Nutritionists, Department of Animal Science.
Plasma glucose and plasma urea nitrogen were not sign ici.tl' altered by
A study was conducted with forty growing pigs to evaluate diets containing
0,-10, 20, 30 and 40% cane molasses.
The gain of pigs.fed the 407 molasses diet was significantly less than pigs
given diets containing; either 0 or 20% molasses. The similarity of gains among
these and the remaining treatments showed only trends rather than a definite
molasses level gain depression relationship. Similar results were obtained for
feed intake, feed efficiency and digestibility of dry matter and ether extract.
The three highest levels of dietary molasses reduced protein digestibility when
compared to either the 0 or 10% molasses diets.
___ TABLE 1. COMPOSITION OF DIETS
Ingredient Percent Molasses
0 O0 20 30 40
% % % % %
Ground yellow corn 71.20 59.70 47.70 35.70 23.20
Soybean meal (50%) 24.00 25.50 27.50 29.50 32.00
Molassesb 0.00 10.00 20.00 30.00 40.00
Salt 0.50 0.50 0.50 0.50 0.50
Defluorinated phosphate 2.50 2.50 2.50 2.50 2.50
Trace mineral mixc 0.10 0.10 0.10 0.10 0.10
Vitamin mixd 1.20 1.20 1.20 1.20 1.20
Antibiotic 0.50 0.50 0.50 0.50 0.50
a Calculated essential amino acid requirements with the exception of methionine,
were fulfilled by corn and soybean meal.
b Standard molasses produced from sugar cane grown on organic soil: analyzed
9.9% protein (N x 6.25). This protein was not included in calculation of iso-
nitrogenous dietary treatments.
c Supplied the following to the diets in p.p.m.: Mn, 57; Fe, 70; Cu, 4.8; Co, 1.6
K, 7.5 and Zn, 100.
d The following vitamins were added to provide a calculated total per lb. of diet:
vitamin A, 1400 I.U.; vitamin D, 400 I.U.; riboflavin, 4.4 mg.; pantothenic acid
10 mg.; niacin, 20 mg.; vitamin B12, 10 mcg.
e Contained 5 gm. procaine penicillin and 15 gm. streptomycin per lb.
TABLE 2. Performance Of Pigs Fed Diets Containing
Various Levels of Cane Molasses
Level of Molasses %
Item 0 10 20 .30 40
Av. initial wt., lb. 28.2 28.2 28,2 28.2 28.2
Av. final wt., lb. 107.5 99.9 105.8 98.5 93.0
Av. daily gain, lb. 1.62a 1.46abc 1.58ab 143bcd 1.32cd
Av. daily feed, lb. 3.56ab 3.10cd 3.80a 3.41abc 3.34ab
Av. feed/gain, lb. 2.20bcd 2.12d 2.42ab 2.39abc 2.53a
Av. digestibility % 94
Dry matter 95.3a 945ab 92.6d 92.9cd 940abc
Ether extract 71.9bc 74.6ab 68.1bd 69.6bcd 84.2a
Crude protein 82.6a 77.1b 70.9c 67.9c 69.7c
Plasma glucose (mg.100) 87.0 91.0 86.0 92.0 89.0
Plasma urea nitrogen (Mg./100) 22.7 25.3 24.5 24.1 25.1
abcd Treatment means on the same line bearing different superscript letters
differ significantly (P < .05).