wonders of a chicken egg

Egg is a container for the accumulation of nutrients such as protein, water, fat, carbohydrates, vitamins and minerals needed to embryo growth (potential children) until they hatch. Embryo development in fertilized eggs (the marriage) can occur due incubated by the parent or with the help of hatching machines.

Eggs (chicken 'local') are commonly sold in markets is generally not the result of marriage between baboons and good, cannot hatch, because he has no germ cell elements.

In principle all types of eggs has the same structure, Eggs consist of six parts: an egg shell or outer skin (shell), shell membrane, egg white (albumin), egg yolk (yolk), yolk rope (chalaza) and germ cell (germ plasm). Each section has a unique function.

Egg shell serves as a protector of embryos from outside interference that is not profitable. Shell also serves to protect the egg white and egg yolk in order not to go out and contamination from substances that are not desirable.

Egg shell has pores as media traffic gaseous oxygen (O2) and carbon dioxide (CO2) during the hatching process. Oxygen is required for the process of respiration and the embryonic development.

Egg white (albumen) is a place of storage of water and nutrients in the eggs used for embryonic growth. Egg yolk is part of a round shape, yellow to orange and there in the middle of the egg.

Egg yolks contain fat that are important for embryo growth. Inside the egg yolks contained germ cells are a major component of avian embryos. At the blunt end of eggs contained air cavities that are useful to breathe for the embryo during the hatching period, which lasted an average of 20-22 days.

Eggs Creation Secrets :

No doubt the egg is a great miracle in nature contain nutrients that are perfect for poultry embryonic life. Even so, to be able to produce embryo, the egg must obtain a comfortable environment (comfort zone) so that the embryo is in it can develop properly and hatch in time. Usually the mother will lay eggs naturally or can also use a hatching machine.

Previously, the parent must provide a number of 'food' is enough in the egg to embryo development from the beginning until the embryo grows into a chick and hatch.

Interestingly, avian embryonic development occurs outside its mother's body. In other words, since the eggs separate from its parent, the embryo will develop to take advantage of albumen and yolk in the egg. Subhanallah, this is the greatness of God is shown in an egg.

Compare with human embryos that received a continuous supply of food from his mother in the womb, normally for 9 months 10 days. Just a little food supply is interrupted, than fetal growth may also be disrupted, and often fatal for the fetus.

        i.            Conclusion :

Egg is a container for the accumulation of nutrients such as protein, water, fat, carbohydrates, vitamins and minerals needed to embryo growth (potential children) until they hatch. Embryo development in fertilized eggs (the marriage) can occur due incubated by the parent or with the help of hatching machines.

Egg shell has pores as media traffic gaseous oxygen (O2) and carbon dioxide (CO2) during the hatching process.

Egg white (albumen) is a place of storage of water and nutrients in the eggs used for embryonic growth. Egg yolk is part of a round shape, yellow to orange and there in the middle of the egg.

Egg yolks contain fat that are important for embryo growth. Inside the egg yolks contained germ cells are a major component of avian embryos.

Pencemaran Laut

Pencemaran Logam Berat

Pencemaran atau polusi adalah suatu kondisi yang telah berubah dari bentuk asal pada keadaan yang lebih buruk. Pergeseran bentuk tatanan dari kondisi asal pada kondisi yang buruk ini dapat terjadi sebagai akibat masukan dari bahan-bahan pencemar atau polutan. Dalam undang-undang lingkungan hidup dijelaskan bahwa suatu tatanan lingkungan hidup dikatakan tercemar apabila ke dalam tatanan lingkungan hidup itu masuk atau dimasukkannya suatu benda lain yang kemudian memberikan pengaruh buruk terhadap bagian-bagian yang menyusun tatanan lingkungan hidup itu sendiri, sehingga tidak dapat lagi hidup sesuai aslinya.

Pada tingkat lanjutnya bahkan dapat menghapuskan satu atau lebih dari mata rantai dalam tatanan tersebut. Sedangkan suatu pencemar atau polutan adalah setiap benda, zat ataupun organisme hidup yang masuk ke dalam suatu tatanan alami dan kemudian mendatangkan perubahan-perubahan yang bersifat negatif terhadap tatanan yang dimasukinya (Palar, 2004).

Pencemaran logam berat dalam lingkungan bisa menimbulkan bahaya bagi kesehatan, baik pada manusia, hewan, tanaman maupun lingkungan terdapat 80 jenis logam berat dari 109 unsur kimia di muka bumi ini. Logam berat dibagi dalam dua jenis, yaitu :

1. Logam berat esensial; yakni ion logam dalam jumlah tertentu yang sangat dibutuhkan oleh organisme. Dalam jumlah yang berlebihan logam tersebut bisa menimbulkan efek toksik. Contohnya adalah Zn, Cu, Fe, Co, Mn, dan lain sebagainya.

2. Logam berat tidak esensial; yakni ion logam yang keberadaannya dalam tubuh masih belum diketahui manfaatnya, bahkan bersifat toksik seperti Hg, Cd, Pb, Cr, dan lain-lain.

Logam berat dapat menimbulkan efek gangguan terhadap kesehatan manusia, tergantung bagian mana dari logam berat tersebut yang terikat dalam tubuh serta besarnya dosis paparan. Efek toksik dari logam berat mampu menghalangi kerja enzim sehingga mengganggu metabolisme tubuh, menyebabkan alergi, bersifat mutagen, teratogen atau karsinogen bagi manusia maupun hewan (Widowati dkk., 2008).

Bryan (1976) dalam Ma’ruf (2007) menyatakan secara umum sumber-sumber pencemaran logam berat di laut dapat dibagi menjadi dua, yaitu sumber-sumber yang bersifat alami dan buatan. Logam berat yang masuk ke perairan laut secara alami berasal dari tiga sumber, yaitu : masukan dari daerah pantai (coastal supply) yang berasal dari sungai dan hasil abrasi pantai aktivitas gelombang, masukan dari laut dalam (deep sea supply) meliputi logam-logam yang dibebaskan dari aktivitas gunung berapi di laut dalam dan partikel atau sedimen akibat proses kimiawi, serta masukan dari lingkungan dekat daratan pantai. Adapun sumber buatan (man-made) adalah logam-logam yang dibebaskan oleh proses industri logam dan batu-batuan.