Zobrazeno 1 - 10
of 53
pro vyhledávání: '"T. Penev"'
Publikováno v:
Agricultural Science and Technology, Vol 13, Iss 4, Pp 417-424 (2021)
Abstract. The aim of the study was to determine the dependence between Test Day (TD) milk productivity traits and somatic cells count (SCC) in milk and also the influence of the factors: farm, parity and TD recording season of Holstein cows. The surv
Externí odkaz:
https://doaj.org/article/5e3ea9d19fb4434b8efc64023ddf8b42
Publikováno v:
Agricultural Science and Technology, Vol 13, Iss 1, Pp 3-11 (2021)
Abstract. The goal of this review is to consider and discuss the scientific literature related to the effect of heat stress (HS) on reproductive performance in dairy cows and opportunities to reduce its effects. The information in literature shows th
Externí odkaz:
https://doaj.org/article/a0c042f684cb44f29862e07f7f4e3b94
Publikováno v:
Agricultural Science and Technology, Vol 10, Iss 2, Pp 79-84 (2018)
Abstract. The article presents the causes and frequency of occurrence of ovarian cysts in sows. The literature indicates that the pathogenesis of ovarian cysts is a complex process linked to dysfunction of the mechanisms responsible for ovarian folli
Externí odkaz:
https://doaj.org/article/5963aff2f5bb4695a0ac89892103feef
Autor:
D. Dermendzhieva, G. Kostadinova, G. Petkov, D. Dimov, T. Dinev, T. Penev, Tch. Miteva, J. Mitev
Publikováno v:
Agricultural Science and Technology, Vol 9, Iss 1, Pp 53-61 (2017)
Abstract. The aim of the present study was to investigate and to make agro-ecological assessment of fresh (excreted up to 24 h) and stored (for 6 months) manure from different farm animals (dairy cows, pigs, laying hens and turkeys) by biogenic elem
Externí odkaz:
https://doaj.org/article/18eef7e24eed4c2691c0ef0491aaaa95
Publikováno v:
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 69, Iss 2, Pp 199-202 (2021)
he survey was conducted in workers in dairy farming in Bulgaria. In the survey were not reported Thermal Work Limit (TWL) index values, which require cessation of employment and constitute a danger to human health. The lowest values of TWL were regis
Publikováno v:
Agricultural Science and Technology, Vol 13, Iss 1, Pp 3-11 (2021)
The goal of this review is to consider and discuss the scientific literature related to the effect of heat stress (HS) on reproductive performance in dairy cows and opportunities to reduce its effects. The information in literature shows that the HS
Publikováno v:
Journal of Oleo Science. 70:745-755
The aim of the survey was to study the effect of heat stress (HS) on health lipid indices in milk of Holstein-Friesian cows. The study was conducted in a cattle farm with Holstein-Friesian cows in the region of Karnobat (Southeastern Bulgaria) in 201
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Publikováno v:
2021 12th National Conference with International Participation (ELECTRONICA).
The aim of the study was to investigate the possibility of using infrared thermography (IRT) as a tool for monitoring the physiological condition of dairy cows. The goal was to monitor cows at normal temperatures. As physiological parameters began to
Publikováno v:
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, Vol 67, Iss 2, Pp 415-423 (2019)
The aim of the study was to investigate the risk factors for formation of hock lesions in dairy cattle farms with different housing system. The study included 508 Black‑and‑white Holstein‑type cows from 14 dairy farms in different regions of Bu