EFFECT OF MATURITY ON CHEMICAL COMPOSITION, NUTRITIVE VALUE AND METHANE PRODUCTION OF LEAVES OF LAURUS NOBILIS SHRUB

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Selçuk B., Bakır T., Başer A., Kaya A., Sırıkcı M., Özkan Ç. Ö., ...More

International Congress on Domestic Animal Breeding Genetics and Husbandry - 2021, Odessa, Ukraine, 18 - 20 October 2021, pp.123-127, (Full Text)

  • Publication Type: Conference Paper / Full Text
  • City: Odessa
  • Country: Ukraine
  • Page Numbers: pp.123-127
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

The aim of the current study was to determine the effect of maturity on the chemical composition,metabolisable energy (ME) and organic matter digestibility (OMD), gas and methane (CH4) productionof Laurus nobilis leaves. There are significant variations among Laurus nobilis leaves at differentmaturity in terms of the chemical composition, gas production, CH4 production ME and OMD values.The CP contents of Laurus nobilis leaves ranged from 6.40 to 16.25%. The CP contents of young andold leaves of Laurus nobilis are sufficient to meet minimum level of CP requirement althoughsenescence leaves are not sufficient to meet minimum level of CP requirement. Therefore, proteinsupplementation is required for optimum rumen function and feed intake in ruminant animals whenlarge amount of senescence leaves were included into ruminant diets. The ME energy and OMD valuesof Laurus nobilis leaves ranged from 6.44 to 6.81% and 45.59 to 51.20 % respectively. The percentageof CH4 of Laurus nobilis leaves ranged from 13.17 to 13.92 %. Laurus nobilis leaves had a low anti-methanogenic potential. Laurus nobilis leaves may be used as a feed additive in ruminant diets todecrease the enteric methane production. However, it should be tested in vivo before largeimplication.
The aim of the current study was to determine the effect of maturity on the chemical composition, metabolisable energy (ME) and organic matter digestibility (OMD), gas and methane (CH4) production of Laurus nobilis leaves. There are significant variations among Laurus nobilis leaves at different maturity in terms of the chemical composition, gas production, CH4 production ME and OMD values. The CP contents of Laurus nobilis leaves ranged from 6.40 to 16.25%. The CP contents of young and old leaves of Laurus nobilis are sufficient to meet minimum level of CP requirement although senescence leaves are not sufficient to meet minimum level of CP requirement. Therefore, protein supplementation is required for optimum rumen function and feed intake in ruminant animals when large amount of senescence leaves were included into ruminant diets. The ME energy and OMD values of Laurus nobilis leaves ranged from 6.44 to 6.81% and 45.59 to 51.20 % respectively. The percentage of CH4 of Laurus nobilis leaves ranged from 13.17 to 13.92 %. Laurus nobilis leaves had a low antimethanogenic potential. Laurus nobilis leaves may be used as a feed additive in ruminant diets to decrease the enteric methane production. However, it should be tested in vivo before large implication.