Your browser doesn't support javascript.
loading
Productive performance, egg quality, hematological parameters and serum chemistry of laying hens fed diets supplemented with certain fat-soluble vitamins, individually or combined, during summer season.
Abd El-Hack, Mohamed E; Alagawany, Mahmoud; Mahrose, Khalid M; Arif, Muhammad; Saeed, Muhammad; Arain, Muhammad A; Soomro, Rab N; Siyal, Farman A; Fazlani, Sarfraz A; Fowler, Justin.
Afiliação
  • Abd El-Hack ME; Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt.
  • Alagawany M; Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt.
  • Mahrose KM; Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt.
  • Arif M; Department of Animal Sciences, University College of Agriculture, University of Sargodha, Sargodha, 40100, Pakistan.
  • Saeed M; Institute of Animal Sciences, Faculty of Animal Husbandry, University of Agriculture, Faisalabad, 38040, Pakistan.
  • Arain MA; Faculty of Veterinary and Animal Sciences, Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Balochistan, 3800, Pakistan.
  • Soomro RN; College of Animal Sciences and Technology, Northwest A & F University, Yangling 712100, China.
  • Siyal FA; Department of Animal Nutrition, Faculty of Animal Husbandry and Veterinary Sciences, Sindh Agriculture University, Tando Jam, 70060, Pakistan.
  • Fazlani SA; Faculty of Veterinary and Animal Sciences, Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Balochistan, 3800, Pakistan.
  • Fowler J; Department of Poultry Science, University of Georgia, Athens, GA 30602, USA.
Anim Nutr ; 5(1): 49-55, 2019 Mar.
Article em En | MEDLINE | ID: mdl-30899809
ABSTRACT
This present study aimed to determine the efficacy of supplementing layer diets with vitamin A (0, 8,000 and 16,000 IU/kg diet) and vitamin E (0, 250 and 500 mg/kg diet) either individually or in combination on egg production and quality, and blood hematology and chemistry of birds reared under summer conditions. A total of 135 Bovans Brown laying hens were distributed to 9 treatment groups with 5 replicates of 3 hens/pen in a 3 × 3 factorial design. A significant improvement in feed conversion ratio (FCR) was observed as supplementary vitamin A or E increased (P ≤ 0.01). Hens fed diets supplemented with 16,000 IU vitamin A plus 500 mg vitamin E/kg diet had the best FCR among all groups. Egg quality traits were not significantly affected by the interaction of vitamin A and vitamin E levels. There was a significant increase in monocytes (P ≤ 0.01) and a decrease in basophils counts (P ≤ 0.05) in response to vitamin E. Significant decreases were observed in packed cell volume (PCV), thyroxine (T4), alanine transferase (ALT), albumin, total cholesterol and total lipids ( (P ≤ 0.05 or P ≤ 0.01) P ≤ 0.01) , and increases were observed in serum concentrations of globulin (P ≤ 0.05) and calcium (P ≤ 0.01) due to vitamin A. The combination of 0 IU vitamin A and 500 mg vitamin E/kg diet had the highest values of PCV (40.09%) and hemoglobin (Hb) (10.33 mg/100 mL) among all groups. Vitamin E raised serum values of total protein, total cholesterol and total lipids (P ≤ 0.05 or P ≤ 0.01). Feed intake, FCR, PCV, Hb, lymphocytes, monocytes, eosinophils, T4, ALT and total protein were significantly affected by the interaction of vitamins A and E (P ≤ 0.05 or P ≤ 0.01). The interaction of vitamins A and E was only significant with respect to serum total protein (P ≤ 0.05). It can be concluded that layer diets supplemented with vitamins A and E had good results in alleviating the harmful impacts of high ambient temperature. The combination of 16,000 IU vitamin A and 500 mg vitamin E per kilogram diet is preferable for obtaining better production of laying hens reared under hot summer conditions.
Palavras-chave

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article