Abstract
This experiment was on 350 uniform sized Cobb broiler hatching eggs (60 g) to assess the response of trace mineral supplementation (Zinc and copper) on growth performance and gastrointestinal tract development in broiler chicken. The fertile eggs were divided into groups with in ovo trace mineral solution containing zinc (80 µg) and copper (16 µg) and without in ovo administration. After hatching, the chicks were further divided into four groups: Group I served as control without in ovo and without post-hatch supplemented diet (WoINOVO-WoPHS), birds in Group II were without in ovo and with post-hatch supplemented diet (WoINOVO-WPHS) (100 % higher level of zinc 200 ppm, copper 30 ppm in diet), birds in Group III had in ovo (zinc, 80 µg; copper,16 µg) and without post-hatch supplemented diet (WINOVO-WoPHS) and birds in Group IV had in ovo and with post-hatch supplemented diet (WINOVO-WPHS). Data collected were subjected to completely randomized design. Hatchability, live weight gain, feed intake and feed conversion ratio at 0–3 wk were not affected (p > 0.05) by in ovo administration of the mineral. Post-hatch supplementation of zinc and copper without in ovo supplementation showed better feed conversion ratio at 3–5 wk of age. It could be recommended that for improved post-hatch performance, broiler chickens diets could be supplemented with inorganic zinc and copper.
Highlights
Vpliv dodatka cinka in bakra v jajce in v krmo po izvalitvi na rast in razvoj prebavil pri brojlerskih piščancih
One hundred and thirty-two (132) chicks were selected per group and further divided into four (66 chicks each) groups; Group I served as control without in ovo and without post-hatch supplemented diet (WoINOVO-WoPHS), Group II composed of hatching eggs without in ovo and with post-hatch supplemented diet (100 % higher level of zinc 200 ppm, copper 30 ppm), Group III composed of hatching eggs with in ovo and without post-hatch supplemented diet. (WINOVO-WoPHS) and Group IV consisted of hatching eggs with in ovo and with posthatch supplemented diet (WINOVO-WPHS)
The animal experimental procedure was approved by ethical committee of ICAR-National Institute of Animal Nutrition and Physiology, Bangalore, India
Summary
Vpliv dodatka cinka in bakra v jajce in v krmo po izvalitvi na rast in razvoj prebavil pri brojlerskih piščancih. With the development of critical tissues (Halevy et al, 2000), incurrent work flow of commercial hatcheries and consid- fluences the development of post-hatch gastrointestinal ering time to transport and delivery of newly hatched tract maturation (Geyra et al, 2001), increases mortality chicks to broiler farms, the chicks are inevitably exposed rate and retards post-hatch growth of day to delayed feeding for 48–72 hrs (Noy et al, 2001; Panda old chicks (Careghi et al, 2005) as pronounced in preet al., 2008; Uni and Smith, 2017). The development of the gut occurs throughout inthe limited reserves of nutrients to the upkeep of ther- cubation (Romanoff, 1960), but the functional abilities of the gut only begins to develop about the
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