Effect of N- carbamylglutamate on amino acids and blood biochemistry in young male goats

Abstract

To study the effect of feed additive N- carbamylglutamate (NCG) with different levels of feeding on amino acids profile and some analytes in serum of goats, thirty male goats aged 7-8 months were distributed into three levels of concentrate 2%, 3%, 4% with or without NCG in a 2×3 factorial experiment/ Completely Randomized Design (CRD). After 72 days of individual feeding, the blood from jugular vein was obtained before feeding in the morning. Results showed that additive NCG with 3% concentrate led to an increase (P<0.01) in total protein and albumin (P<0.05), globulins increased (P<0.01) with increasing concentrate without NCG. Creatinine decreased with increasing concentrate without NCG. Additive NCG led to a linear decrease in uric acid with increasing feed intake (P<0.05) and a linear increase without NCG. Blood magnesium, zinc, and copper increased with NCG. No difference in calcium between treatments. The level of feeding without NCG didn't affect fat parameters, while LDL, HDL, and cholesterol increased with NCG and 4% concentrate. Additive N- carbamylglutamate affected negatively blood amino acids, especially with 4% concentrate. In conclusion, 3% concentrate was the best for blood homeostasis with or without NCG, and preferred to use NCG with urea.

Impacts of Concentrate Feeding Level With or Without N-Carbamylglutamate on Productive Performance of Goats

“…Al-Mamouri and Al-Ani (4) fed lambs 3% of complete feed diet consisting of three levels of concentrate to `alfalfa hay: 70%: 30%, 50%: 50%, and 30%: 70% and the high concentrate treatment has the superiority (P<0.01) for lamb performance and digestibility of nutrients. The effect of concentrate level with or without N-carbamylglutamate (NCG) on the digestibility of dry matter and nutrients are shown in table (3). The digestibility of metabolic energy was increased (P<0.05) in all treatments as compared with the fourth treatment (T4).…”

Influence of Feeding Corn Impurities on Rumen Bacteria and Fermentation Characteristics of Sheep

“…In ruminants, we can use urea with feeds directly 1-2%, or treated roughages to prepare 3.3% nitrogen (13) or treated grains (25). Adding urea directly requires great attention aimed to eliminate its negative aspects by providing 1-2%, gradually feeding, well mixing feed, frequency of feeding, giving compounds such as N-Carbamylglutamate ( NCG) 0.4 -0.6% as additives, providing clean water, avoid hot weather, having cement floors for the barn with good drainage, in the rumen, In ruminants, urea is commonly used in feeds to reduce costs (5), but it may cause problems for the fetus, because of urea hydrolysis rapidly to NH3-N by rumen microorganism's enzymes within 2h (15) and it is widely used as nonprotein nitrogen (NPN) to provide ammonia that required for rumen microbial growth as true protein for the host animal or ruminants (4,13). The high cost of feed ingrediants need to substitute with cheap sources or by-product.…”