The nutritional situation for extensive kept goats in North East Mexico - Part 2: The saisonal daily drymatter intake
Abstract
Im Nord-Osten Mexikos wiesen extensiv gehaltene Ziegen eine durchschnittliche tägliche Trockensubstanzaufnahme (DTTA) von 3,8% (+/-,98) des Körpergewichtes (KGW) bzw. 97,9 g (+/-24,96) je kg metabolisches Körpergewicht (MKW) im Jahr auf. Die niedrigste Menge an DTTA (2,21% des KGW bzw. 58 g/kg MKW) wurde im Dezember aufgenommen. Auch im Januar (3,43% des KGW) und im Februar (3,4% des KGW) wurde eine relativ niedrige DTTA festgestellt. Im Juni betrug die DTTA 2,28% des KGW bzw. 58,7 g/kg MKW. Im Juli erreichten die Tiere die höchste DTTA des Jahres (5,35% des KG bzw. 137,5g/kg MKW). Für die saisonal mangelhafte Ernährungssituation der im Gebiet gehaltenen Ziegen spielt neben den ausgeprägten Schwankungen im Nährwert der natürlichen Vegetation die stark schwankende Futterverfügbarkeit, welche zu einer unterschiedlichen Futteraufnahme führt, eine große Rolle.
Summary
In north east Mexico it is observed that goats kept on extensive feeding over the year had an average daily dry matter intake (ADDI) amounting to 3.80% of the body weight (BW), corresponding to 97.90 g per kg metabolic body weight (MBW). The lowest I ADDI were recorded in December (2.21% of BW or 58.00 g/kg MBW) and June (2.28% of BW or 58.79 g/kg MBW). Relatively low ADDI values were observed in January and February i.e. 3.43% and 3.48% of BW or 88.90 and 89.60 g/kg MBW, respectively. The highest ADDI of the year was recorded in July i.e. 5.35% of BW or 137.50 g/kg MBW. The seasonal feeding deficiency in the area is an important factor affecting the condition of the kept goats. Besides the factor of pronounced variation in the nutritive value of the natural vegetation, the distinct fluctuation in feed availability will also lead to a fluctuating daily feed intake.
Summary
In north east Mexico it is observed that goats kept on extensive feeding over the year had an average daily dry matter intake (ADDI) amounting to 3.80% of the body weight (BW), corresponding to 97.90 g per kg metabolic body weight (MBW). The lowest I ADDI were recorded in December (2.21% of BW or 58.00 g/kg MBW) and June (2.28% of BW or 58.79 g/kg MBW). Relatively low ADDI values were observed in January and February i.e. 3.43% and 3.48% of BW or 88.90 and 89.60 g/kg MBW, respectively. The highest ADDI of the year was recorded in July i.e. 5.35% of BW or 137.50 g/kg MBW. The seasonal feeding deficiency in the area is an important factor affecting the condition of the kept goats. Besides the factor of pronounced variation in the nutritive value of the natural vegetation, the distinct fluctuation in feed availability will also lead to a fluctuating daily feed intake.
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