Nutrients can be categorized in 5 areas:1.Water (not an actual nutrient)2.Dry matter (containing the nutrients, expressed as DM)3.Energy (Nett Energy, expressed as FUM)4.Protein (we will use digestible crude protein, expressed as DCP)5.Minerals and vitamins Water:Although water is not considered as a real nutrient, it plays a vital role in the functioning of the body, milk…
Originally, the most extensive information about the composition of foods was based on a system of analysis described as the proximate analysis of foods, which was devised over 100 years ago by two German scientists, Henneberg and Stohmann. More recently, new analytical techniques have been introduced, and the information about food composition is rapidly expanding…
1. Formulation of Rations Ration formulation is the process of combining feed ingredients to supply animals with all required nutrients for maintenance, growth, reproduction, and production (milk, eggs, meat). Principles of Ration Formulation: Must be balanced: includes energy, protein, fiber, minerals, vitamins. Should be economical, using locally available feed resources. Formulated based on the…
The water content of the animal body varies with age. The newborn animal contains 750–800 g/kg water but this falls to about 500 g/kg in the mature fat animal. It is vital to the life of the organism that the water content of the body be maintained: an animal will die more rapidly if deprived…
The Importance of Biodiversity Biodiversity, which encompasses genes, species, and ecosystems, provides society with a diverse range of goods and services that are essential for human well-being. These components of biodiversity—whether used directly, indirectly, or as potential resources—are often referred to as “biological resources” (McNeely et al., 1990; Reid & Miller, 1989; Wood, 1997). Direct…
Seawater intrusion (SI) is an ecological problem caused by the encroachment and infiltration of salt water (typically brackish water or seawater) into freshwater surface and groundwater supplies in coastal areas. This intrusion can transform landscapes, reduce agricultural viability, and contaminate freshwater reserves. It is a growing issue in numerous coastal regions worldwide, including China’s Yangtze…
An invasive species is any nonnative organism that significantly alters or disrupts the ecosystems it colonizes. While some species migrate naturally, human activities such as global commerce and the pet trade have become the primary means by which invasive plants, animals, microbes, and other organisms are transported to new habitats. Most introduced species fail to…
Over the past 50 years, the natural world has undergone unprecedented change, leading to devastating consequences. Today, nearly one million species face extinction, threatening essential ecosystem services such as disease regulation and pollination. The primary drivers of biodiversity loss include land and sea use changes, overexploitation of organisms, climate change, pollution, and the introduction of…
Biodiversity, the variety of life across genes, species, and ecosystems, is crucial for ecosystem stability and human well-being. Unfortunately, biodiversity is depleting at an alarming rate due to various natural and human-induced factors.Biodiversity loss refers to the decline in biological diversity within species, ecosystems, geographic regions, or the entire Earth. Biodiversity encompasses genetic variation, species…
Biodiversity refers to the variety of life on Earth, including all species of plants, animals, fungi, and microorganisms, as well as the ecosystems they form. It is essential for maintaining ecological balance, sustaining life-supporting systems, and providing resources necessary for human survival. Conservation, on the other hand, refers to the efforts made to protect, restore,…
Systematics: The term “systematics” is derived from the word “systema,” meaning the systematic arrangement of organisms. It considers the evolutionary relationships among organisms. Plant systematics, in particular, deals with the interrelations between plants and their evolutionary descent. Systematics studies biological diversity and organizes this information into a classification system. Organisms are classified based on similarities,…
Taxonomy, the science of classifying organisms, has evolved over centuries from simple groupings based on observable traits to complex systems incorporating evolutionary relationships and molecular data. The history of taxonomy can be divided into distinct phases, each marked by significant contributions from naturalists and scientists. 1. Early Classification Systems (Pre-Linnaean Period) a. Ancient Taxonomy (Aristotle…
I. Taxonomy in Animal Science Taxonomy in animal science is the systematic classification and naming of animals based on their evolutionary relationships, genetic characteristics, and morphology. It plays a crucial role in understanding animal biodiversity, improving livestock breeds, and managing wildlife conservation efforts. A. Importance in Animal Science 1.Livestock Improvement – Helps in classifying and…
