The aim of this study was to quantify nitrogen (N) and phosphorus (P) utilisation and excretion in intensive dairy buffaloes. Italian Mediterranean buffaloes were divided into 4 groups (n= 6/group) as follows: Groups M50, M125 and M225 at 50, 125 and 225 days of lactation, respectively, and Group NL which was non-lactating. Lactating buffaloes had greater (P<0.05) dry matter (DM) and organic matter (OM) intake than NL buffaloes. Buffaloes in Group M50 had a lower (P<0.05) crude protein (CP) apparent digestibility than buffaloes in Groups M125 and M225. Group NL had a higher (P<0.01) real CP digestibility than Group M50. Buffaloes in Groups M50 and NL had a negative N balance (-79 and -12 g, respectively) whilst buffaloes in Groups M125 and M225 had a positive N balance (26 and 16 g, respectively). Buffaloes in Group M50 had more (P<0.05) N in urine (204 g) than Group NL (87g). Buffaloes in Group NL had less (P<0.01) P in both faeces (12.9 g) and urine (0.8 g) compared with the three groups of lactating buffaloes combined (25 g in faeces and 12 g in urine) and Group NL also had greater (P<0.05) P digestibility (68%) than lactating buffaloes combined (43%). The present study has shown that buffaloes have a relatively high efficiency of N and P utilisation.
Nitrogen and phosphorus utilisation and excretion in dairy buffalo intensive breeding / Neglia, Gianluca; Balestrieri, Anna; Gasparrini, Bianca; Cutrignelli, MONICA ISABELLA; Bifulco, Giovanna; Salzano, Angela; Cimmino, Roberta; Varricchio, Ettore; D'Occhio, Michael John; Campanile, Giuseppe. - In: ITALIAN JOURNAL OF ANIMAL SCIENCE. - ISSN 1828-051X. - 13:4(2014), pp. 703-709. [10.4081/ijas.2014.3362]
Nitrogen and phosphorus utilisation and excretion in dairy buffalo intensive breeding
NEGLIA, GIANLUCAPrimo
;BALESTRIERI, ANNA;GASPARRINI, BIANCA;CUTRIGNELLI, MONICA ISABELLA;BIFULCO, GIOVANNA;SALZANO, ANGELA;CIMMINO, ROBERTA;CAMPANILE, GIUSEPPE
Ultimo
2014
Abstract
The aim of this study was to quantify nitrogen (N) and phosphorus (P) utilisation and excretion in intensive dairy buffaloes. Italian Mediterranean buffaloes were divided into 4 groups (n= 6/group) as follows: Groups M50, M125 and M225 at 50, 125 and 225 days of lactation, respectively, and Group NL which was non-lactating. Lactating buffaloes had greater (P<0.05) dry matter (DM) and organic matter (OM) intake than NL buffaloes. Buffaloes in Group M50 had a lower (P<0.05) crude protein (CP) apparent digestibility than buffaloes in Groups M125 and M225. Group NL had a higher (P<0.01) real CP digestibility than Group M50. Buffaloes in Groups M50 and NL had a negative N balance (-79 and -12 g, respectively) whilst buffaloes in Groups M125 and M225 had a positive N balance (26 and 16 g, respectively). Buffaloes in Group M50 had more (P<0.05) N in urine (204 g) than Group NL (87g). Buffaloes in Group NL had less (P<0.01) P in both faeces (12.9 g) and urine (0.8 g) compared with the three groups of lactating buffaloes combined (25 g in faeces and 12 g in urine) and Group NL also had greater (P<0.05) P digestibility (68%) than lactating buffaloes combined (43%). The present study has shown that buffaloes have a relatively high efficiency of N and P utilisation.File | Dimensione | Formato | |
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