Alternative strategies in protein nutrition of dairy cattle: can we avoid excesses and deficiencies?
The role of dietary protein in the nutrition of the dairy cow and overall farm sustainability can be summarized as: (1) effects on dry matter intake (DMI), milk yield, and milk composition, (2) effects on feed costs, (3) environmental effects, and (4) possible effects on reproduction efficiency. Historically protein has been fed trying to satisfy requirements in term of CP, both in percentage of D.M. or grams per cow per day, and more recently we passed to the concept of metabolizable protein and amminoacids. Basically when we are feeding cows we have to be aware that we are feeding a portion of protein available for the microorganism in the rumen (RDP) and a portion of amminoacids that will by-pass the rumen and will be absorbed in the gut (RUP). The balance between this two fractions is crucial in maximizing cow’s performance. Thus the two questions we have to ask our self when balancing diets in terms of protein are: are we providing the proper RDP to maximize microbial protein production in the rumen? Are we feeding enough amminoacids to maximize milk and protein production?
To harvest the high quality forages in Ukraine — is possible. This was proved by LLC «Vitchyzna», which is in Sumy region. According to the results of the contest for the best alfalfa silo in 2016, this farm won the first place.
Effective reproduction of the herd on modern industrial dairy farms is impossible without a high-quality program, which can help to identify cows in heat. Since the visual definition presents a certain complexity, specialists try practice other methods of heat detection.
In previous issues we talked about various aspects of the automated feeding systems for calves. In particular, we describe the foreign experience. Although the use of automatic feeders — a rare practice at the domestic dairy farms, there are several farms where calves are fed with the help of machines.
Holger Kruse, Holm & Laue GmbH, Germany
Feeding calves is one of the key components in the technology of cattle breeding and require considerable attention. For a long time on minimizing costs by reducing milk portions with the aim to speed up the transition of animals to dry and concentrated feed was laid a special attention.
Today, plant breeders can offer a wide range of silage hybrids to milk producers. About their technological and economic advantages, especially the selection and implementation of high genetic potential, tells Benoit Delord, head of the "Animal Feeding" company Limagrain.