The effect of extra biotin in the lactation diet of sows on litter weight gain

Transcription

1 58th Annual Meeting of the EAAP, August 2007, Dublin, Ireland, Session 32, abstract 1753, The effect of extra biotin in the lactation diet of sows on litter weight gain M.J. Van Oeckel, S. Millet, M. De Paepe, D.L. De Brabander ILVO - Animal Sciences, Belgium 1

2 Introduction - Biotin H 2 O soluble B-vitamin (vitamin H) essential co-factor in # metabolic pathways (CH, proteins, fat) important role in gluconeogenese in liver microbially produced in gut: not sufficient availability in feedstuffs is variable & low 2

3 Introduction Biotin deficiency Hair losses Skin lesions Cracking/lesions of footpads & hooves Slow growth Impaired reproductive performance 3

4 Introduction Biotin requirements NRC standards (1998): no requirements given because of inconsistent results In general practice: 0.2 to 0.3 ppm biotin added to sow diets 4

5 Introduction Biotin levels above the use of 0.3 ppm Hypothesis: Extra biotin in sow lactation diets stimulates glucose and consequently milk production Daily gain of the litter 5

6 Objective To compare a control lactation diet: 0.3 ppm biotin vs. a test lactation diet: 0.3 ppm + 2 ppm biotin 5-10 days before farrowing until weaning Daily gain of the litter: 0 to 4 wks age 6

7 Material & methods 4 series of on av. 17 hybrid sows: 68 sows When entering farrowing unit: 2 treatment groups formed based on parity number, previous results and condition. Control diet vs. test diet (+ 2 ppm biotin) Standardisation of litter size (to piglets) Creep feed from 1 week after birth 7

8 Litter size at birth after standardisation of litter size vs Total S1 S2 S3 S4 Control Biotin 8

9 Parameters: Material & methods - Weight & fatness of sows at start & weaning - Number of piglets per litter at birth and weaning and mortality % - Weight piglets at birth, death and weaning - Feed intake sows, creep feed intake piglets - Health problems and medical treatments 9

10 Material & methods Estimation of milk production per sow litter weight gain BUT piglets who lost weight & outliers were omitted Correction to suckling period of 28 days 10

11 Results: Feed intake sows kg/day kg/day Control Biotin 1 0 Total S1 S2 S3 S4 11

12 Results: Weight loss of sows kg vs. 36 kg Control Biotin 0 Total S1 S2 S3 S4 12

13 Results: P2 loss of sows 4,5 4,0 3,5 3,0 mm 2,5 2,0 Control Biotin 1, ,0 vs. 3.2 mm 0,5 0,0 Total S1 S2 S3 S4 13

14 Results: # piglets weaned/litter vs Total S1 S2 S3 S4 Control Biotin 14

15 Results: % piglet mortality between birth and weaning % mortality 20 a b vs. 10% 2 0 Total S1 S2 S3 S4 Control Biotin Mortality at younger stage for biotin vs. control group 15

16 Results: piglet daily gain g/day g/day Control Biotin 50 0 Total S1 S2 S3 S4 Daily creep feed intake 5 g/piglet, not affected by biotin 16

17 Results: Litter weight gain for 28 suckling days, corrected for outliers % kg per sow % +1.9% +5.1% +10.3% Control Biotin vs. 69 kg Total S1 S2 S3 S4 17

18 Conclusions No sign. effects of extra 2 ppm biotin in sow lactation diet but limited nr. of sows involved Indications for = feed intake, but weight and P2 losses = piglet weight gain, but diarrhoea & mortality litter weight gain by milk production more effect for uni- vs. multipareous sows A 4.5% litter weight gain improvement is similar as earlier found for high productive cows 18

19 Thanks to DSM Nutritional Products 19