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Triple Super Phosphate as a Source of Phosphorus in the Diet of Growing Bull

A. Akter
Department or Animal Nutrition, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Z. H. Khandaker
Department or Animal Nutrition, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

The study was conducted to investigate the use of Triple Super Phosphate (TSP) as a source of phosphorus in growing cattle. Twelve indigenous growing bull (initial live weight of 150 ± 10 kg) were assigned to four dietary treatments, viz. basal diet (T_o) containing 0.14% P and basal diet was supplemented with TSP to provide P levels of 0.24 (T₁), 0.35 (T₂) and 0.45% (T₃) respectively. All diets were formulated to be iso-nitrogenous and iso-energetic. Significant (P<0.05) differences in dry matter intake (DMl) were observed among the dietary treatments. The DMI (g/d) of animals fed diet having 0.35% P was higher than the diet containing 0.14, 0.24 and 0.45% P. The apparent digestibility of DM and OM were significantly (P<.001) affected but CP and EE were not significantly (P>0.05) affected by the supplementation of P from TSP. The digestibility of CF and NFE was significantly (P<0.01) higher for diets T₂ (0.35% P) cornpared to diet containing 0.14, 0.24 and 0.45% P. Apparent absorption of P was significantly (P<0.05) higher in animals fed on diet containing 0.14% phosphorous (T_o) than diets with 0.35 and 0.45% phosphorus and true absorption (g/100g) of P was significantly (P<0.01) higher in the animals fed on diets T_o(0.14%P) than those fed on other diets (T₁, T₂ and T₃. Phosphorus balance was significantly (P<0.01) higher for diets T₁ (4.37 g/d) T₂ (5.75 g/d) and T₃ (7.09 g/d) compared to diet To (2.87 g/d) and highest value was observed on diet T₃. There was no significant (P>0.05) difference among the mean values for live weight gain and the highest daily live weight gain was observed for diet T₂(69.44g) compared to the other diets T_o, T_I and T₃). The average serum P concentration of animals fed on diets T₁, T₂ and T₃ was significantly higher (P<0.01) than that of animal fed on diet T_o. The results suggested that supplementation of TSP as a source of Phosphorus increased total DMI, digestibility of CF, NFE, P retention, P content of blood serum and live weight gain of growing calves. Therefore, supplementation of 0.21% P from TSP may be used in growing cattle ration.

Keywords: Phosphorus, Triple super phosphate, Growing bull

Location: Department or Animal Nutrition, Bangladesh Agricultural University, Mymensingh.

Start Date:

End Date:

Program Area: Animal Health and Management

Commodity:

Objectives:

To investigate the supplementation of different level of TSP as a source of phosphorus and its response on the performance of indigenous growing cattle.

Methodology:

Twelve indigenous growing cattle (about 30 month of age) having initial live weight of 150±10 Kg were used for a period of 60 days. The animals were divided into three blocks having four animals in each block. Four experimental diets were formulated with commonly available feed ingredients: rice straw, dhal grass, broken maize, soybean meal, urea and common salt. The control diet (T_o) contained 0.14% P. In addition to control diet (To), diets T₁, T₂ and T₃ were supplemented with 0.10, 0.21, 0.31 % P from TSP thus diets T₁, T₂ and T₃ contained 0.24, 0.35 and 0.45% P respectively. All diets were iso-energetic and iso-nitrogenous and all four diets were randomly distributed in each block in a Randomized Block Design (RBD). The ingredient and nutrient composition of dietary treatments.

Daily feed intake was recorded. At the middle of the experiment, a metabolism trial was conducted for a period of 10 days for each treatment of which last seven days was collection period. Blood sample (5 ml) of experimental animals were collected in the morning before offering feed and water by punching the jugular vein at 15 days interval. Feeds and faeces were analyzed for the proximate components according to the method of AOAC (1990). Phosphorus contents of feed ingredients, faeces, urine and blood sample were determined according to the method of Page et al. (1982). A daily balance was obtained by subtracting the total amount of P excreted in faeces and urine from the dietary P intake.

Source of Information: Bang. J. Anim. Sci. 2010, 39( 1 &2) : 89 - 96 (ISSN 0003-3588)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results suggested that supplementation of TSP as a source of phosphorus increased total DMI, apparent digestibility of CF and NFE, apparent and true absorption of phosphorus, P retention, P content of blood serum and live weight gain of growing calves. Based on the above findings it may be concluded that supplementation of 0.31 % P from TSP may be used in growing bull calves ration.

Knowledge Management: Journal