LEVUCELL®
SB IMPROVES SOW’S COLOSTRUM AND MILK IMMUNE
NEED TO REVISIT METHIONINE REQUIREMENTS FOR POULTRY
AND SWINE “Refining amino acid requirements and evaluating the potential effect of ambient environment on such requirements appear worthwhile issues to consider in relation with genetic potential and species differences,” said Dr Pierre-André Geraert, Director Innovation Marketing, Adisseo during the fifth Advancia International Methionine Seminar, held in Turkey. Studies presented at the seminar on
amino acid requirements in pullets and layers (Prof Perazzo-Costa, Paraiba Univ, Brazil), in different genotypes of young broilers (Prof Dozier, Auburn Univ, USA), and in swine and poultry (Prof Rostagno, Viçosa Univ, Brazil) clearly showed an increase in sulphur amino acid requirement (up to 5%) for modern genotypes, although feed intake has increased, to support higher performance. Prof Rostagno underlined that increasing methionine supplementation in the early days of broilers enhanced breast muscle deposition. Prof Swick (Univ New England, Australia)
showed the economic benefit of determining the nutritional quality of soybean meal batches in feed formulation. Amino acid composition of muscle did not
appear constant and could be representative of the ingested feed (Dr Conde-Aguilera, INRA, France), which would have an impact on the muscle properties, and thus potentially on meat quality. On behalf of Dr Swennen (KU Leuven, Belgium), Dr Mercier (Research Manager, Amino Acids and Proteins, Adisseo) further demonstrated that hydroxy-analogue of methionine exhibited a higher anti-oxidative benefit than methionine under heat stress conditions. Prof Adeola (Purdue Univ, USA) and Prof
Rostagno (Brazil) shared a roundtable where the audience addressed lots of questions to the speakers. Advancia is a Scientific and Technical
Community launched by Adisseo 4 years ago to gather worldwide scientists and nutritionists to share research progresses on sulphur amino acids. Results from recent research projects have demonstrated that amino acids and particularly sulphur amino acids are involved not only in growth performance but also in various metabolic functions: anti- oxidant potential and animal health, as well as, meat quality and its technological properties. Advancia is also the occasion for
scientists and nutritionists worldwide to share interrogations and questions on amino acids with the aim to develop sustainable productions of animal proteins.
QUALITY Results of an innovative large-scale study on sow’s colostrum and milk immune quality were presented at the latest ‘Journées de la Recherche Porcine’ in Paris, a major event for the pig industry to stay abreast of swine research. One of the main conclusions of the study was that sow diet supplementation with Saccharomyces cerevisiae boulardii CNCM I-1079 (Levucell®
SB), effectively improved
colostrum immune status: the level of IgG and IgA are improved by 21 and 18% on average, respectively. In milk, the IgA level was also significantly enhanced by 18%. A second study presented at the same congress provided further insight into piglets’ ability to quickly reach the udder, based on their vitality at birth, and its link with subsequent performance. The authors of the study concluded that:
“Colostrum antibodies levels were significantly enhanced by Levucell SB supplementation in the sow diet”, adding that: “If we can demonstrate that the piglets’ immune status was consequently improved, in particular at weaning, this could represent a potential alternative to antibiotic usage in piglet, a practice increasingly questioned due to the emergence of antibiotic resistance and associated diarrhoeas outburst.”
A significant study Unlike in humans, there is no transfer of maternal immunoglobulins (Ig) to the foetus during gestation: newborn piglets are totally deprived of antibodies. In fact, their early immunity depends on immunoglobulin G (IgG) intake through colostrum and then milk, a process known as passive transfer of immunity. Consequently, piglet immunity in the first days of life depends on their colostrum intake and colostrum IgG content (Le Dividich et al., 2005), which are highly variable from farm to farm and even from sow to sow. Moreover, it is known that passive immunity level reached during the colostral phase favours the development of active immunity and the level of immune protection at weaning (Rooke et al., 2003). Thus, enhancing the colostrum and milk
IgG content through sow diet design appears to be a good strategy to optimise piglets’ protection and health pre and post-weaning. Moreover, the observed effects of Levucell® SB upon colostrum and milk antibodies levels are in-line with the well-described benefits of this probiotic in maternity upon piglets’ health (reduced mortality in maternity, reduced neonatal diarrhoea...) and performance up to weaning (improved ADWG and litter weight...) What’s more, this large-scale experimental
study enabled to update the literature on sow colostrum, a poorly studied, although essential aspect of pig production. The study presented at the JRP was conducted on 66 sows in total in a French pig farm, and provided a wealth of
data on colostrum immune status (evolution of IgG, IgM and IgA contents post-farrowing), while the references available on the subject were scarce, with studies performed on a much more limited number of sows (Salmon- Le Gagneur 1962; Klobasa et al., 1987; Le Dividich 2001).
Piglets vitality at birth: a performance indicator The second significant and innovative study from Lallemand team that was presented at the JRP Congress, proposed an update of the piglet vitality scale, incorporating the time to reach the udder after farrowing (INRA method). This study showed the relevance of this updated assessment method, which appears easy to implement in commercial pig farms when studying the peri-partum phase. It also confirmed the link between vitality at birth and subsequent piglet zootechnical performance (ADWG). These conclusions concur with the precedent study, emphasizing the importance of colostrum intake on piglet subsequent performance.
NAT E S S E IMP ROVE S THE PERFORMANCE OF HEALTHY
BROILERS Sodium butyrate is a well-known growth promoter and regulator of the intestinal microflora, its combination with essential oils improve those effects, due to the synergy between those active principles. However, for both compounds to work appropriately, it is necessary to ensure that a part of them can reach the distal parts of the gastrointestinal tract, and this can be done with vegetable fat; the part of the active substances that is protected with the fat is released only after it is digested. The benefits of the combination of sodium butyrate and essential oils protected with vegetable fats (NATESSE) on animal health (immune response, resistance to necrotic enteritis, etc.) has been described in the literature. Recently, a field trial was set up to evaluate the effects that NATESSE (at 1 kg/ ton in the starter feed and at 0.5 kg/ton in the finisher feed) has on the production of healthy broiler chickens. One farm with two buildings of 1.800 m2 each was used for the trial. Despite a 3.65% higher density for the broilers receiving NATESSE in their feed, those birds had a higher body weight (2,371 g vs. 2,336 g) in a shorter time (40.76 days vs. 41.08 days). The FCR (1.838 vs. 1.852, a reduction of 0.76%) and mortality (5.85% compared to 6.27%, a difference of 6.69%) were also lower for the NATESSE group, resulting in 5.85% more weight of broilers sent to the slaughterhouse (this means 4,285 kg more produced) as well as a 3.54% higher EPEF. It is concluded that the use of NATESSE in broiler feed improves growth, reduces FCR, decreases mortality of the animals and produces a better EPEF in broiler flocks.
Contact: Juan Jose Mallo,
jjmallo@norel.es
PAGE 40 MARCH 2012 FEED COMPOUNDER
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