IngentaConnect Reduction of urinary nitrogen excretion and ammonia emission from...

Authors: YAMAMOTO, Akemi¹; ITOH, Minoru¹; KADOYA, Yoshikatsu²; KANNO, Hirokazu³; YAMADA, Michi³; FURUYA, Shu¹

Source: Animal Science Journal, Volume 73, Number 4, August 2002 , pp. 301-304(4)

Abstract:

An experiment was conducted to determine the effects of supplementing a reduced crude protein (CP) diet with apple pomace on the urinary nitrogen excretion and ammonia emission from slurry in the growing pigs. Four barrows (35 kg bodyweight) were assigned to one of two diets. Each pig was placed in a metabolism cage and fed a low CP, amino acid-supplemented diet (CP 11.33%; low CP diet) or a low CP, amino acid-supplemented diet containing 23.08% dried apple pomace (CP 9.47%; apple pomace diet) for two 14-day experimental periods. After the completion of the first period, the pigs were switched to the other diet. Urine and feces were quantitatively collected daily for 5 days after a 9-day adaptation period. The daily nitrogen intake for the low CP diet and the apple pomace diet was 17.76 g/pig and 18.64 g/pig, respectively. The pigs fed the apple pomace diet excreted more fecal nitrogen (6.86 g/day) than the pigs fed the low CP diet (3.63 g/day) (P < 0.001), but urinary nitrogen excretion with the apple pomace diet was 3.11 g/day, which was much lower than that for the low CP diet (5.95 g/day) (P < 0.001). The daily ammonia emission from the mixture of urine and feces determined by an in vitro method was much lower for pigs fed the apple pomace diet (120 mg) than that for pigs fed the low CP diet (603 mg) (P < 0.01). The addition of apple pomace to a reduced CP, amino acid-supplemented diet reduces urinary nitrogen excretion and thereby ammonia emission.

Keywords: amino acids; ammonia emission; apple pomace; diet; nitrogen; pigs

Document Type: Research article

DOI: 10.1046/j.1344-3941.2002.00041.x

Affiliations: 1: Institute of Livestock Industry's Environmental Technology, Livestock Environmental Improvement Organization, Nishigo-mura, Fukushima-ken, 2: Fukushima Prefectual Livestock Experiment Station, Fukushima-shi, and 3: Fukushima Prefectural Agricultural Junior College, Yabuki-machi, Fukushima-ken, Japan

The full text electronic article is available for purchase. You will be able to download the full text electronic article after payment.

$50.16 plus tax Refund Policy

Reduction of urinary nitrogen excretion and ammonia emission from slurry by feeding a low protein diet supplemented with apple pomace to growing pigs