Pomen oskrbe z maščobnimi kislinami za zdravje krav molznic

diplomsko delo

Barbara Šink (Author), Tatjana Pirman (Reviewer), Andrej Lavrenčič (Mentor)

Abstract

Zdravstveno stanje krav molznic se je s povečevanjem mlečnosti v zadnjih desetletjih precej poslabšalo, predvsem zaradi poglabljanja negativne energijske bilance, ki predstavlja veliko tveganje za pojav bolezni. Dodatki maščob so namenjeni izboljšanju energijske bilance, v zadnjem času pa je vedno bolj pomembna tudi oskrba krav s posameznimi maščobnimi kislinami, ki na zdravje ter plodnost vplivajo tudi preko procesov reprodukcije in imunskega sistema. V diplomskem delu smo želeli predstaviti različne vplive posameznih maščobnih kislin na mlečnost, plodnost ter zdravje krav molznic. Najpomembnejše obdobje krmljenja maščobnih kislin je obdobje 30 dni pred telitvijo in 30 dni po telitvi zaradi velikih potreb po energiji ter zaradi sprememb v presnovi in sprememb v delovanju hormonov. Nasičene maščobne kisline, predvsem palmitinska kislina sicer izboljšajo mlečnost, vendar poglabljajo negativno energijsko bilanco, zato je v tem obdobju bolj primerna oskrba z dolgoverižnimi nenasičenimi maščobnimi kislinami, ki izboljšajo izkoriščanje energije in energijsko bilanco. Maščobne kisline n-3 in n-6 sodelujejo v sintezi lipidnih posrednikov v reprodukcijskih procesih in imunskem sistemu, zato imajo na plodnost in zdravje največji vpliv. Oskrba krav molznic z linolno in arahidonsko kislino lahko poslabša razvoj zarodka in uspešnost osemenitev ter poveča pojav bolezni. Najbolj priporočljivo je krmljenje n-3 maščobnih kislin (linolenske, dokozaheksanojske in eikozapentanojske kisline), saj izboljšajo plodnost ter zmanjšajo pojavnost ter resnost bolezni.

Keywords

govedo;krave;molznice;prehrana živali;maščobne kisline;diplomske naloge;

Data

Language:	Slovenian
Year of publishing:	2020
Typology:	2.11 - Undergraduate Thesis
Organization:	UL BF - Biotechnical Faculty
Publisher:	[B. Šink]
UDC:	636.2.084/.087(043.2)
COBISS:	21811459
Views:	562
Downloads:	98
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Importance of fatty acid supply on health of dairy cows
Secondary abstract:	The health status of dairy cows has deteriorated considerably with the increase in milk yield of cows in recent decades, mainly due to the negative energy balance, which poses a high risk of disease. Fat supplements are intended to improve the energy balance. Recently the supply of cows with individual fatty acids, which also affect health and fertility through the processes of reproduction and the immune system, has become increasingly important. In this B. Sc. Thesis we wanted to present the different effects of individual fatty acids on milk yield, fertility and the health of dairy cows. The most important period for feeding fatty acids is the period of 30 days before calving and 30 days after calving due to high energy needs and due to changes in metabolism and changes in hormone function. Saturated fatty acids, especially palmitic acid, improve milk yield, but deepen the negative energy balance, so the supply of long-chain unsaturated fatty acids, which improve energy utilization and energy balance, is more appropriate during this period. Fatty acids n-3 and n-6 are involved in the synthesis of lipid mediators in reproductive processes and the immune system, and therefore have the greatest impact on fertility and health of cows. Supplying dairy cows with linoleic and arachidonic acid can impair embryo development and insemination performance and increase disease incidence. Feeding n-3 fatty acids (linolenic, docosahexaenoic and eicosapentaenoic acids) is recommended, as they improve fertility and reduce the incidence and severity of disease.
Secondary keywords:	dairy cows;animal nutrition;fatty acids;
Type (COBISS):	Diploma project paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Biotehniška fak., Oddelek za zootehniko
Pages:	VII, 26 str.
ID:	11880821