producing affordable meat for an increasing demand. A more intensive method is often selected to produce meat with highly efficient birds. Other strategies such as antioxidant approaches, with exogenous antioxidants, or endogenous antioxidant support through highly bioavailable trace minerals such as zinc, copper, manganese and selenium were also tested with success. After having analysed several studies (Kuttappan & al., 2021),
conducted in both research and commercial facilities, Novus’s two-way nutritional strategy was developed: 1) Support healthy muscle growth and development and 2) Reduce oxidative stress in the tissue. Due to the biological processes involved in muscle tissue growth and
oxidative stress in broilers, trace minerals have been identified for their proven positive effects on bodyweight and growth rates. Several studies indicated that highly bioavailable trace minerals such as MINTREX® could help reduce damages to broiler breast tissue due to stress or other causes up to 50%. These Organic Trace Minerals (OTM) also help in the regeneration process if damage occurs. It was then hypothesized that the same trace minerals that support healthy muscle growth could help reduce the development of abnormal tissue.
Recent data shows the effect of bis-chelated organic trace minerals In a recent trial done at the Universidad Politécnica de Madrid (UPM), Novus tested a strategy of replacing inorganic sources of trace minerals (Zn, Cu and Mn) with a reduced level of MINTREX®
highly bioavailable
organic source of trace minerals on performance and quality parameters of Ross 308 broilers at 45 days of age. 324 one-day-old Ross 308 male broilers were divided in 2 groups
(9 pens, 18 animals per pen) and reared for 45 days. There was a thinning of 4 birds per pen at day 28. Animals were fed iso-nutritional diets following FEDNA recommendations with feeds mainly composed of Wheat/Soybean meal, Iso Methionine. The only differences between diets were the source and the level of minerals (Table 1). After 45 days, animals were slaughtered, and carcass quality was assessed. Foot Pad Dermatitis & Hook burns were scored on 240 legs by treatment using a 3 scores scale (0 normal to 2 severe) and breast quality was evaluated on 120 fillets by treatment for White Striping. With less Zn and Mn and equal Cu from organic sources, between
1 and 45 days, animals performed numerically better on ADG (+1.5 g/d), Live Weight (+65 g) and FCR (-0.013 kg/kg). Concerning carcass and meat quality, there was a significant (P
<0.01) reduction of the incidence of food pad lesions (12.9% severe FPD with MINTREX®
and hock burns (15.9% severe lesions with MINTREX®
vs 24.9% for the inorganic trace minerals source) vs 23.7% for
the inorganic trace minerals source), that leads to an indication of a better welfare for the animals and better valorization of the legs. White Striping incidence was significantly lower (P <0.01) by 2.2 pts (9.6% vs 11.8% of severe defaults for MINTREX®
and inorganic trace minerals
source, respectively). In the context of increased demand for affordable meat, the poultry
industry is well positioned to offer affordable products that are easy to prepare and have high nutritional value, if it can cope with metabolic challenges caused by modern broiler production intensification.
What are MINTREX® organic trace minerals?
These organic trace minerals include two chemically differentiated HMTBa molecules (methionine precursor) as ligands bound to the mineral. The strong bounds and protection brought by the two HMTBa molecules to the mineral allow it to reach the proper absorption site in the small intestine, providing better utilization of the mineral by the animal. This means birds are better equipped with the nutritional tools for optimal muscle growth.
Recent Novus’s works (see references) confirm that the use of highly
bioavailable trace elements helps mitigate meat and carcass defects while maintaining the performance of the animals. This is a cost-effective way, compared to other nutritional strategies, to optimise profitability of poultry production chain.
Table 1: Source and level of trace mineral (Zn, Cu, Mn) included in the trial
Source Zn
Starter (0-14 d of age) Inorganic MINTREX®
Grower (15-28 d of age) Inorganic MINTREX®
Finisher (29-45 d of age) Inorganic MINTREX®
90 50
80 50
70 50
Trace mineral (mg/kg) Cu
10 10
10 10
10 10
Mn
120 50
100 50
90 50
References: Kuttappan VA., Manangi M., Bekker M., Chen J., Vazquez-Añon M. 2021 Nutritional Intervention Strategies Using Dietary Antioxiidants and Organic Trace Minerals to reduce the incidence of Wooden Breast and Other Carcass Quality defects in broiler birds. Front. Physiol. 12:663409 doi:10.3389/fphys.2021.663049 Aguirre L., de Juan Á., Castillo M., Peris S., Mateos G. 2021. Effects of source and level of trace minerals in the diet on growth performance and carcass quality of broilers from 1 to 45 days of age. IPPE conference, 2021
For further information and details, please email:
info.europe@
novusint.com
FEED COMPOUNDER SEPTEMBER/OCTOBER 2021 PAGE 35
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