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Behaviors associated with cows more prone to produce milk with reduced stability to ethanol test due to feeding restriction Ciência Rural
Stumpf,Marcelo Tempel; Fischer,Vivian; Kolling,Giovani Jacob; Silva,Alessandra Ventura da; Ribeiro,Maria Edi Rocha; Santos,Carolina da Silva dos.
ABSTRACT: The experiment was carried out to identify changes in the behaviorr of lactating cows induced by severe feeding restriction and further refeeding that could serve as facilitators for the visual identification of cows more prone to produce milk with reduced stability. Twelve cows were separated into two groups: Control: full diet supply; Restriction: 50% of the full diet. Feed restriction lasted seven days (Period 1), with posterior supply of full diet for seven days (Period 2) for all treatments. Behavior was observed on the first and fifth days in each period from 08h40 to 19h00. Ingestive and social behavior were monitored. Cortisol assessed stress levels. Analysis of variance and multifactorial statistical analyzes were performed. Adequate...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bos taurus taurus; Feeding restriction; Ingestive behaviour; Milk stability; Social behaviour.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000901662
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Relationship between diurnal grazing time and herbage intake in dairy cows in rotational grazing Ciência Rural
Ribeiro Filho,Henrique Mendonça Nunes; Setelich,Elena Apezteguia; Crestani,Steben; Dias,Kamila Maciel; Mantovani,Carolina; Valenti,Joana.
The aim of this study was describe the relationship between grazing time and herbage intake and identify tools to grazing management of dairy cows grazing Italian ryegrass (Lolium multiflorum Lam.) on a rotational grazing method. Six dairy cows in mid-lactation period were allowed to graze paddocks during three grazing cycles. During each cycle cows grazed two paddocks with 9 days of occupation by paddock and an herbage allowance of 30kg DM cow-1 day-1. Measurements were made in the last 9 days of each period and during intervals between cycles cows grazed an adjacent area with a mixed of temperate species. It was compared three grazing cycles and cows eating similar herbage amount with different daily grazing time. Independently of herbage intake, daily...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ingestive behaviour; Lolium multiflorum Lam.; Sward structure.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011001100026
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