Effects of Asparagus Trims By-Product Supplementation in Laying Hens Diets on Nutrient Digestibility and Productive Performance

Manatsanun Nopparatmaitree, Anunya Panthong, Siwaporn Paengkoum, Pornpan Saenphoom


An experiment was conducted to examine the utilization of asparagus trims by-product as alternative
feedstuffs in laying hen diets. Two hundred and forty laying hens (ISA-Brown strain), 40 weeks of age were
raised under ambient temperature and assigned in a completely randomized design (CRD) with four dietary
treatments and three replications per treatment. Each treatment contains different levels of asparagus trims
by-product (0, 1, 2 and 3% TAP). All birds were fed with diets containing 18% CP and 11.9 MJ/kg (ME) of
laying hens diet to meet nutrient requirements of poultry according to NRC (1994). Diets were restricted
(110 g/h/d) throughout the study (42 days) and drinking water was offered ad libitum to the bird. Results
showed that total hen-day egg production, egg mass, feed conversion ratio per one dozen of egg (FCR,
feed:gain) and feed cost per gain (FCG) per one dozen of egg were not significantly different (P>0.05) among
treatments. The average egg weight values differ significantly among levels of asparagus trims (P < 0.01)
(58.29, 60.28, 59.94 and 60.72 g, respectively). In addition, egg from different treatment shows significant
different on whole egg weight, yolk weight and albumen weight (P0.05) among levels of asparagus trims by-products. However, fiber digestibility
of birds fed with 3% of asparagus trims were higher than those with 2% asparagus trim, and significantly
higher than those in control groups and 1% of asparagus trims (P0.05). Nevertheless, asparagus trims by-product is suitable alternative feedstuffs in
laying hen diets.

Key Words: Asparagus trims; Laying hen; Hen-day egg production; Egg weight; Digestibility

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