Group Title: Animal husbandry and nutrition mimeograph series - University of Florida Animal Husbandry and Nutrition Dept. ; no. 61-1
Title: Performance of pigs weaned at three and six weeks of age
CITATION THUMBNAILS PAGE IMAGE ZOOMABLE
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00072900/00001
 Material Information
Title: Performance of pigs weaned at three and six weeks of age
Physical Description: 3 p. : ; 28 cm.
Language: English
Creator: Combs, G. E ( George Ernest ), 1927-
O'Bannon, Robert Harold, 1938-
Wallace, H. D ( Harold Dean )
University of Florida -- Agricultural Experiment Station
Publisher: Florida Agricultural Experiment Station
Place of Publication: Gainesville, Fla.
Publication Date: 1960
 Subjects
Subject: Swine -- Development -- Florida   ( lcsh )
Piglets -- Feeding and feeds -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
General Note: Caption title.
General Note: "August, 1960."
Funding: Animal husbandry and nutrition mimeograph series - University of Florida Animal Husbandry and Nutrition Dept. ; no. 61-1
Statement of Responsibility: G.E. Combs, R.H. O'Bannon and H.D. Wallace.
 Record Information
Bibliographic ID: UF00072900
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 77059552

Full Text


SAnimal Husbandry and Nutrition Florida Agricultural
Mimeograph Series No. 61-1 Experiment Station
Gainesville, Florida
August 1960


PERFORMANCE OF PIGS WEANED AT THREE AND SIX WEEKS OF AGE

G. E. Combs, R. H. O'Bannon and H. D. Wallace /


Recent developments in swine nutrition and management have made it possible
for the producer to wean pigs at most any age desired. However, as with any
phase of production, the economies involved rather than nutritional or managerial
developments largely determines the age at which pigs will be weaned.

At the present it is generally accepted that earliest and latest practical
weaning dates for pigs are 2 to 3 and 6 to 8 weeks respectively. Therefore, a
series of experiments were conducted to compare the performance of pigs weaned
at 3 and 6 weeks of age,

Experimental

A total of three experiments involving 26 sows and their litters were con-
ducted during the summer, winter and spring seasons. All pigs were given an iron
injection 3 to 5 days after birth and kept with their dams in concrete confinement
until weaned. At weaning the pigs were placed on pasture where they had access
to a structure open only on the South side. During the winter and spring seasons
straw bedding was provided. When each litter was 8-weeks old they were weighed
and removed from the experiment,

The composition of the rations fed is presented in Table 1. The pigs were
given access to the starter ration at 2 weeks and remained on this ration until
6 weeks old, The grower was fed from 6 to 8 weeks of age. Feed and water for
the young pigs were supplied ad libitum. The sows were hand-fed once daily and
feed charged was from farrowing to weaning.

The performance of representative pigs in two of the 3 and 6 week groups was
followed during the growing-finishing period to determine if age of weaning
influenced subsequent weight gains.

Results and Summary

A summary of the results is presented in Table 2, In each of the tbree-sea-
sons the average daily gain was slightly higher for the pigs weaned a.t--.'weeks'of
age. The greatest difference occurred during the winter season whicl( idicates ,.
that supplemental heat may be beneficial with the type of housing s''d. Howeve,- \
this slight advantage in daily gain was not retained throughout th 'rowing-7 !
finishing period. At 140 days of age 31 pigs from each of the we ng perialds
(group I) showed an average daily gain of 1.52 for the 6 week wean a0 a`n'1.57
for the 3 week weaning. Pigs from group 3 at 150 days of age showd:;"i average


1/ Combs, O'Bannon and Wallace, Assistant Animal Husbandman, Research
Assistant and Associate Animal Husbandman, respectively. Florida Agricultural
Experiment Station. The assistance of W. E. Collins and L, S. Taylor, Swine
Herdsmen is gratefully acknowledged.






daily gain of 1.70 and 1.73 for the 6 and 3 week weaned pigs, respectively.

The cost per pig was less for the 3 week weaned pigs in the summer and
winter but slightly more during the spring months. The average of all groups
showed that costs for pigs weaned at 6 weeks was 26 cents more per pig than those
weaned at 3 weeks. However, the pigs weaned at 6 weeks gained slightly faster
than the pigs weaned at 3 weeks (.59 vs. .56). It should be noted that labor costs
were not included but more labor is required to care for the sow and pigs than
only the pigs. Also these cost figures do not represent the entire cost of pro-
ducing pigs; those cost items which remain relatively constant regardless of
weaning age were not included.

Consideration of the overall results indicate the following: the inexpen-
sive-type housing used in this study was satisfactory for year-round usage; a
fortified corn-soybean ration produced satisfactory results with pigs weaned
as early as 3 weeks and the cost per pig was less for those pigs weaned at 3
weeks.

Table I. COMPOSITION OF RATIONS -1/

Ingredient Starter Grower Sow


Grown yellow corn 44.35 75.35 59.55
Soybean meal 28.00 17.00 29.05
Sugar 20.00 --
Lard 3.00 3.00
Alfalfa meal ----- -- 5.00
Ground limestone .-- .-- .50
Steamed bonemeal 1.50 1.50 3.00
Iodized salt .50 .50 .50
Trace minerals .10 .10 .10
Vitamin supplemet # I -/ .15 .15 .20
B 2 supplement -' .10 ,10 .10
Vafamin A and D premix
No. I -4 2.00 2.00 ----
No. 2./ ----- 2.00
Aurofac 10 1/ .30 .30 ---
100.00 100.00 100.00


./ Ration cost per 100 Ibs.
Summer $ 5.57 $ 4.06 $ 3.50
Winter and Spring 5.61 3.96 3.51
2/ Supplied by Chas. Pfizer and Co. Contained 2000 mg. riboflavin, 40030 g.
pantothenic acid, 9000 mg. niacin, and 10,000 mg. choline chloride per
pound.
3/ Supplied by Chas. Pfizer and Co. Contained 9.0 mg. B12 per pound.
4/ Contained 20 gm. vitamin A (10,000 I.U./gm.), 4.44 gm, vitamin 0 (9000 I.U./
gm.), and 883.56 gm soybean meal.
5/ Contained 14 gm. vitamin A (10,000 .,U./gm.), 2 gm. vitamin D (9000 I.U./gm.)
and 892 gm. soybean meal.
6/ Contained 10 gm. chlortetracycline/Ib.


-2-






n
t


O C
8

o
5"
(f


No. No. Av. Av. Av. Av. Feed Consumed/P i eed/Sow Av. Wt. Cost/p ig
Sows Pigs Birth Weaning 8-wk Daily Starter Grower Cost Amount Cost loss/sow
Wt. Wt. Wt. Gain $ $ Amount Cost
(Birth- $
8-wk.)
Gru


Group I
(Summer)

"3 week"

"6 week"

Group 2
(Wi nter)

"3 week"

"6 week"

Group 3
(Sprinq)

"3 week"

"6 week"


3.5

3.0




2.9

3.1




3.0

3.1


11.2

22.6




I1.1

26.1




11.8

26.1


33.8

34.3




31.9

36.0




36.1

37.2


.54

.56




.52

.59




.59

.61


18.7

6.8




20.3

8.9




25.1

5.6


27.9

24.2




23.4

20.5




29.3

23.5


2.17

1.36




2.07

1.31




2.57

1.24


178

388




168

384


6.23

13.58




5.91

13.47


177 6.21

381 [3.39


Av. all groups

"3 week"


3.2


"6 week"


11.4 34.3 .56

24.8 35.9 .59


21.3 27.5 2.31 175.3 6.15

6.8 23.1 1.30 384.2 13.45


1/ Cost figures Include only feed costs and weight loss of sows.


Table 2. PERFORMANCE OF PIGS WEANED AT 3 OR 6 WEEKS OF AGE


57.8

71.2




36.0

61.3


6.36

7.83




3.96

6.74


3.87

4.25




3.36

3.95




4.05

4.00


51.6 6.19

81.8 9.81


50.3 5.75

73.3 8.40


3.82

4.08


costs and weight loss of sows.


L/ Cost figures include only feed




University of Florida Home Page
© 2004 - 2010 University of Florida George A. Smathers Libraries.
All rights reserved.

Acceptable Use, Copyright, and Disclaimer Statement
Last updated October 10, 2010 - - mvs