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Suplementacion con dos fuentes de ni...

Ortiz Colon, Guillermo.

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Suplementacion con dos fuentes de nitrogeno a toretes pastando gramineas tropicales (Spanish text).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Suplementacion con dos fuentes de nitrogeno a toretes pastando gramineas tropicales (Spanish text)./
作者:	Ortiz Colon, Guillermo.
面頁冊數:	42 p.
附註:	Source: Masters Abstracts International, Volume: 41-03, page: 0711.
Contained By:	Masters Abstracts International41-03.
標題:	Agriculture, Animal Culture and Nutrition. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1411143
ISBN:	0493858903

Suplementacion con dos fuentes de nitrogeno a toretes pastando gramineas tropicales (Spanish text).
Ortiz Colon, Guillermo.

Suplementacion con dos fuentes de nitrogeno a toretes pastando gramineas tropicales (Spanish text). - 42 p.

Source: Masters Abstracts International, Volume: 41-03, page: 0711.

Thesis (M.S.)--University of Puerto Rico, Mayaguez (Puerto Rico), 2002.

The objective of this study was to determine the effect of feeding nitrogen supplements on the efficiency of production of weaned calves grazing tropical pastures. Forty-five calves were randomly assigned to three treatments: T1-control, T2-non-protein nitrogen supplementation (poultry litter), and T3-protein nitrogen supplementation (soybean meal). The supplements were formulated and fed in amounts to supply 75% of the protein requirements of a medium frame calf gaining 0.23 kg/day. The animals in T2 and T3 consumed 1.60 and 0.86 kg/head/day of supplement, respectively. Average daily gains were significantly greater (P < 0.05) for T2 (1.03 kg/d) and T3 (0.93 kg/d) than for T1 (0.73 kg/d). Estimated supplement conversion favored the animals in T3 over T2 (4.30 vs. 5.33 kg of suplement/kg of additional gain). The cost of the weight gain attributed to the effect of the supplements was

ISBN: 0493858903Subjects--Topical Terms:

1017857
Agriculture, Animal Culture and Nutrition.

Suplementacion con dos fuentes de nitrogeno a toretes pastando gramineas tropicales (Spanish text).
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500 $a Adviser: Americo Casas.
502 $a Thesis (M.S.)--University of Puerto Rico, Mayaguez (Puerto Rico), 2002.
520 $a The objective of this study was to determine the effect of feeding nitrogen supplements on the efficiency of production of weaned calves grazing tropical pastures. Forty-five calves were randomly assigned to three treatments: T1-control, T2-non-protein nitrogen supplementation (poultry litter), and T3-protein nitrogen supplementation (soybean meal). The supplements were formulated and fed in amounts to supply 75% of the protein requirements of a medium frame calf gaining 0.23 kg/day. The animals in T2 and T3 consumed 1.60 and 0.86 kg/head/day of supplement, respectively. Average daily gains were significantly greater (P < 0.05) for T2 (1.03 kg/d) and T3 (0.93 kg/d) than for T1 (0.73 kg/d). Estimated supplement conversion favored the animals in T3 over T2 (4.30 vs. 5.33 kg of suplement/kg of additional gain). The cost of the weight gain attributed to the effect of the supplements was $0 .29/kg in T2 and $1 .34/kg in T3. Supplementation with poultry litter improved animal performance in a cost effective manner.
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