Effect of heat stress on protein requirements for maintenance of goats.
Abstract: The study was conducted to determine protein requirements for maintenance (RCP)of goats under 25°C and 35°C environmental temperature. Metabolic fecal nitrogen (MFN) and endogenous urinary nitrogen (EUN) were determined from fasting metabolism trails in which feces and urine were collected from eight male goats in climatic chambers for 14 days. The EUN and MFN values were used for RCP determination.
Protein requirements for maintenance of goats were also determined under the two environmental temperatures from nitrogen balance data applying statistical, factorial and graphical methods. Goats were fed four ration differed in dietary protein concentrations (9.38, 11.81, 13.22 and 14.74 %).
Results indicated that there was difference in protein requirements for maintenance (RCP) among the used methods and RCP calculated by any method was lower for goats under 35°C than those under 25° C.
The RCP of heat stressed goats was about 77% of that of goats under 25°C, averaging 4.84 g/Kg W0.075 for goats under 25°C and 3.71 g/Kg W0.075 for those under 35°C
Publication year 2004
Pages 120p.
Availability location مكتبة معهد بحوث الانتاج الحيوانى- شارع نادى الصيد- الدقى- الجيزة
Availability number 869
Organization Name
Country Egypt
Department Sheep and Goat Research Department
Author(s) from ARC
Agris Categories Animal physiology - Nutrition
AGROVOC
TERMS		 Goats. Heat stress. Maintenance. Nutritional requirements.
Publication Type PhD Thesis
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