RFCS positively affect egg parameters
Researchers recently examined whether Refined Functional Carbohydrates (RFCS) can offer the same efficiency benefits for layers as has been shown in broilers - that is, can RFCS positively influence egg parameters like they can improve broiler efficiency? At the same time, the researchers also explored how well RFCS compare to some other common feed additives.
The study was conducted in Guatemala and featured 200 Lohman White Classic layers at 28 weeks of age. The birds were allotted into five treatments in a completely randomized block design. The 10-week study included four birds per cage, with eight replications per treatment.
The birds were given a twoweek adaptation period that was followed by eight weeks of data collection. A basal layer diet was formulated to meet the strain of egg-type chicken used. Water via two nipple drinkers per cage and mash feed prepared at a commercial feed mill was provided. In addition, 14.5 hours of total light (3.5 hours of artificial light) was provided during the study.
Data showed that RFC results were excellent compared to some of the other competitors. RFCS were very good at improving both egg production efficiency as well as improving some of the egg parameters, supporting its application in the layer industry very well. For example: • All treatments improved egg production compared to control, but RFCS gave the largest numerical improvement in percent production and number of eggs/hen housed compared to other feed additives
tested (Figure 1). Feed efficiency was improved in hens supplemented with RFCS and an herbal extract compared to all other treatments (P<0.05) (Figure 2). In addition, results also showed: Egg weight was not affected by treatments (Table 1). Egg yolk colour and
Haugh units were significantly higher in hens supplemented with an antibiotic, RFCS and an herbal extract compared to control and probiotic (Table 1). Egg shell thickness was highest in hens receiving an herbal extract and lowest in those receiving the probiotic, with all other treatments being intermediate (Table 1).
Therefore, the researchers concluded that RFCS fed to layers resulted in the largest improvement in layer performance while improving some egg parameters compared to other feed additives tested.¡
This article was authored by Dr. Sangita Jalukar, Product Development and Research Coordinator, Arm & Hammer Animal Nutrition. References available on request. To learn more about RFCS, visit Ahanimalnutrition.com.