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001-es BibID:BIBFORM107681
Első szerző:Ortega, Arth David Sol Valmoria (PhD student)
Cím:Effects of antioxidant supplementation on the growth performance of pigs exposed to heat stress / Arth David Sol Valmoria Ortega, László Babinszky, Xénia Erika Ozsváth, Ogonji Humphrey Oriedo, János Oláh, Csaba Szabó
Megjegyzések:Heat stress (HS) is a great consequence experienced by pigs when global temperature rises due to climate change. Production parameters such as growth is highly affected by this condition as the animal will be forced to perform physiological mechanisms in order to reduce metabolic heat and maintain euthermia of which is an important factor for the animals' optimal productive performance. In line with the capacity of antioxidants (organic source) to alleviate the adverse effects of HS, it is this research's aim to assess the effect of antioxidant (vitamins C and E, and minerals selenium and zinc) supplementation at elevated levels on the growth performance of pigs reared under HS conditions. Thirty-six Danbred barrows (65?70 kg) were allocated into four treatment groups, one group placed in thermal comfort (TC) (20 ?C) and the remaining groups (HC, HS1 and HS2) in HS condition (30 ?C). The pigs were fed with their respective diet; pigs in TC received basal feed (B) and in HS room, diets B (HC), elevated 1 (increased levels of antioxidants, HS1), and elevated 2 (further increased in antioxidant levels, HS2) were given in ad libitum. Measurements were performed weekly for four weeks, which comprised the adaptation (7 days, fed B diet), gradual temperature rise (heat increment, fed experimental diet) in HS room (7 days) and the experimental period (14 days). Body weight gain (BWG), average daily gain (ADG), feed intake (FI), and feed conversion ratio (FCR) were measured. All throughout the adaptation and heat increment period, pigs in all treatment have similar measurements. HS had no significant effect (P > 0.05) on the BWG, FI and FCR of pigs, numerically, however, HC pigs had the lightest BWG and were the least efficient feed converter among the treatment groups. Significantly lighter ADG (P < 0.05) was observed in HC pigs in the 2nd week of the experimental period, whilst not statistically, slight improvement in the ADG of pigs were observed upon the supplementation of antioxidants at HS1 level. Our results indicate that, in certain growth performance parameters, pigs with high genetic capacity can be resilient to the adverse effects of HS, and for those parameters that is greatly affected by HS, it can be slightly improved by antioxidant supplementation.
Tárgyszavak:Agrártudományok Állattenyésztési tudományok előadáskivonat
Megjelenés:Scientific Conference of PhD. Students of FAFR, FBFS and FHLE SUA in Nitra with international participation : Proceedings of Abstracts / ed. Monika Tóthová, Judita Lidiková, Kristína Candráková, Dominik Holly. - p. 44. -
További szerzők:Babinszky László (1950-) (agrár) Ozsváth Xénia Erika Oriedo, Ogonji Humphrey Oláh János (1976-) (állattenyésztés) Szabó Csaba (1968-) (agrármérnök)
Pályázati támogatás:EFOP 362-16-2017-00001
Internet cím:DOI
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