Ana Gavrau

For a discussion of the true protein content of feed ingredients and a pretty good N to true protein factor see Alhotan et al. (2024) https://doi.org/10.1080/23311932.2024.2428821. Of course it is better if true protein is determined from the sum of the amino acid residues.And then to balance true protein and dLYS see Alhotan and Pesti (2016) https://doi.org/10.1080/00071668.2016.1180666Some comme ...

Hi to everyone Reading the article and all valuable comments, I personally feel a deficiency in highlighting an important factor, and that's the quantity and quality of the non-essential amino acids in our formulated feed ingredients. Like the SID of Essential AA, SID of non-essential AAs is also very important.SID of non-essential Amino Acids decides the limit of Feed CP reduction, because if we ...

Dr Piotr Stanislawski Hi Piotr!!! Nice to hear from you again! What is problem? Tr-inhibitor? Simply drop off SBM and replace it by SFM, add a little bit lysine, proper enzymes mix (you know what is necessary to add:)) and everything will be ok! Including protease, of course. My factory apply proteases mix, too: alkaline, neutral and acid protease. Any case it is possible to improve AA digestibil ...

@Antônio Mário Penz Junior @Antônio Mário Penz Junior. I think you're right, the only way to keep water cool is to have a system that will circulate the water through the drinking lines. Because, even if you're incoming water into the house is at 2C, the heat that comes of the plastic of the water line, will quickly warm the water up to undesired temps. I have monitored this, and within minutes th ...

@Antônio Mário Penz Junior Thank you. So in a hot weather, 30C, that has no method of cooling the water what would you recommend to use? Some will suggest flushing lines, but if you don't do that continuously, it has little effect on water temp, because the environment and the plastic of the line quickly warms the water back up to room temp.

One thing is hot weather and the other is hot water. You are right on saying that birds adapts themselves to hot weather, But, there is no adaptation to hot water.

Mr. Entz, we need to consider hot weather and/or hot water. If we have hot weather and cold water, we need to preserve the water temperature based on putting the pipe line deep in the floor to maintain it cool from the origin. In this case, flushing the water helps. However, if the water comes hot from the origin, flushing does not work. Still, new negative pressure chicken houses projects are not ...

Regarding the use of sodium bicarbonate, it works, but the temperature of the water must be around 25 to 28ºC. Higher temperatures are detected by lingual thermosensors that restrict the water consumption, and the bicarbonate effect can be reduced.

Mr. Entz! Research done by Beker and Teeter (1994) showed that the addition of 0.5% KCl in the water improved broiler performance when the water temperature was 10,0oC ou 26,7oC. When the water temperature was 43,3oC, the KCl addition did not have effect. That is based that tongue neuron sensors react to water temperatures above 25oC.