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Animal Science Papers and Reports

Using humic acid in diets for dairy goats

Taskin Degirmencioglu
Department of Feed Technology and Animal Nutrition, Uludag University Karacabey Vocational School, Republic of Turkey
Abstract :
The effects of diets containing different levels of humic acid (HA) were determined on several blood
and milk parameters in dairy goats. Eighteen Saanen goats (2 years old, 52 kg body weight) were
fed three diets containing: 0 g HA/kg body weight (T
1
), 1 g HA/kg – (T
2
) or 3 g HA/kg – (T
3
) in a 3x3
latin square experimental design. Each period consisted of 21 days preliminary period and 7 days
collection phase. Blood and milk samples were collected at the end of the sample collection periods.
The total DM intake values were 1.73, 1.74 and 1.79 (kg/d) for goats fed T
1,
T
2
and T
3,
respectively.
Goats fed the T
3
diet had higher (P<0.05) milk yields than goats fed the T
1
diet (milk yield=2.45
and 2.11 kg/d, respectively), and this yield was similar to that of diet T
2
(2.37 kg/d). However, the
addition of HA did not improve the milk fat, solids non-fat, protein, or lactose content of milk. HA
administration to goats significantly reduced the total cholesterol of blood (P<0.05; 3.21, 2.61 and
2.64 mmol l
-1
for T
1
, T
2
and T
3
, respectively), and the LDL cholesterol levels of blood serum that
were determined as 0.60, 0.39 and 0.42 mmol l
-1
, respectively (P<0.05). Further investigation will be
required to elucidate the effects of humic acid on goat performance.
Keywords :
blood metabolites / goat / humic acid / milk composition

Date Deposited : 02 Apr 2015 10:30

Last Modified : 02 Apr 2015 10:30

Official URL: http://www.ighz.edu.pl/?p0=5&p1=34

Volume 32, Number 1, - 2014

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