Lactating Animal
Mostrando 1-12 de 91 artigos, teses e dissertações.
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1. Transition period produces changes in blood and body composition in mares
RESUMO: Avaliações clínicas e metabólicas são necessárias para o monitoramento de éguas gestantes e lactantes, pois refletem a saúde do animal. A condição corporal da égua pode ser um indicador da eficiência reprodutiva. O estudo objetivou determinar as possíveis variações na condição corporal e metabólica em éguas Mangalarga Marchador dur
Pesq. Vet. Bras.. Publicado em: 02/12/2019
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2. Ingestive behavior of dairy goats fed diets containing increasing levels of neutral detergent fiber and particle size using multivariate analysis
ABSTRACT. The purpose of this study was to evaluate the effect of interaction between increasing neutral detergent fiber content and particle sizes on ingestive behavior of dairy goats. Forty-eight lactating, multiparous Saanen and Alpine goats, with average milk production of 1.4 ±0.57 kg d-1, around 60th ±12 day of lactation were distributed in a 3 x 4 f
Acta Sci., Anim. Sci.. Publicado em: 04/07/2019
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3. Suplementação proteica de vacas leiteiras mantidas em pastagem de Tifton 85 durante o período de seca
RESUMO Concentrados com alta proteína bruta e minerais e com menor concentração de energia poderiam ser utilizados em menores quantidades no balanceamento de dietas com volumosos tropicais. Assim, objetivou-se avaliar o consumo de matéria seca, a resposta produtiva e econômica de vacas da raça Girolando mantidas em pastagem de Tifton 85 durante o perí
Arq. Bras. Med. Vet. Zootec.. Publicado em: 14/06/2019
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4. Nutrient digestibility and changes in feeding behavior of cattle fed cottonseed and vitamin E
ABSTRACT: High lipid concentration in ruminant diets often harms nutrient digestibility and feed intake; thus, a protected lipid and antioxidant source can be considered as an alternative for improving diet energy without putting animal production at a disadvantage. The aim of this study was to evaluate the dry matter intake (DMI), nutrient digestibility and
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-04
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5. Dietary level of cull pinto beans on animal performance, digestibility, and energy balance of pregnant-lactating hair ewes
ABSTRACT The objective of this study was to evaluate the effect of three levels of cull pinto beans (CPB) on animal performance, energy balance, and digestibility of hair ewes during pregnancy-lactation. One hundred and sixty-eight Pelibuey ewes were used (105 multiparous and 63 primiparous). Seven ewes of each type were randomly assigned to each of the 24 p
R. Bras. Zootec.. Publicado em: 29/11/2018
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6. Effect of the addition of protected fat from palm oil to the diet of dairy sheep
ABSTRACT The objective of this study was to evaluate the effect of protected fat from palm oil on body weight and milk production and composition of lactating Lacaune ewes. Four treatments (0, 20, 40, and 60 g kg−1 as fed) of protected fat from palm oil were used to feed nine animals in each group. Isoproteic and isoenergetic diets were formulated and adju
R. Bras. Zootec.. Publicado em: 23/11/2018
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7. Infrared thermography as a method for evaluating the heat tolerance in dairy cows
ABSTRACT The objective of this study was to determine whether infrared thermography is a useful tool for the recognition of dairy cows in a state of thermal heat stress, as well as to identify the best region of the animal to be evaluated for this recognition. Physiological variables, including rectal temperature, respiratory frequency, cardiac frequency, an
R. Bras. Zootec.. Publicado em: 2017-05
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8. Slow-release urea in diets for lactating crossbred cows
The objective of this study was to evaluate the performance of F1 (Holstein × Zebu) cows in lactation according to different levels of substitution of soybean meal for a protein equivalent non-protein nitrogen originated from slow-release urea (SRU). Eight F1 (Holstein × Zebu) cows in the first third of lactation, with an average milk yield of 12.7 kg (±3
R. Bras. Zootec.. Publicado em: 2015-05
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9. Models of protein and amino acid requirements for cattle
Protein supply and requirements by ruminants have been studied for more than a century. These studies led to the accumulation of lots of scientific information about digestion and metabolism of protein by ruminants as well as the characterization of the dietary protein in order to maximize animal performance. During the 1980s and 1990s, when computers became
R. Bras. Zootec.. Publicado em: 2015-03
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10. Performance of calves submitted to protocols using extruded or ground starter
Feed processing can affect rumen development in new born calves, and potentially define animal performance. Two feed management systems, extruded starter (Ruter) with possible early weaning and ground starter (control), were evaluated in thirty-two Holstein calves (16 females and 16 males). Animals were randomly assigned to the treatments using a randomized
Braz. arch. biol. technol.. Publicado em: 2014-10
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11. Models for estimating feed intake in small ruminants
This review deals with the most relevant limits and developments of the modeling of intake of sheep and goats reared intensively and extensively. Because small ruminants are normally fed ad libitum, voluntary feed intake is crucial in feeding tactics and strategies aimed at optimal animal production. The effects of genetic, neuroendocrine, hormonal, feed and
R. Bras. Zootec.. Publicado em: 2013-09
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12. Doses de concentrado com ou sem gordura inerte na dieta de vacas em lactação mantidas em pastagens tropicais / Levels of concentrate with or without inert fat for lactating dairy cows grazing tropical pastures
A suplementação de vacas em pastagens tem sido estudada com a finalidade de estabelecer a melhor relação entre quantidade e fonte de suplemento e a produção e composição do leite. A adição de fontes de lipídeos aos suplementos permite aumentar a densidade energética da dieta na tentativa de atender as exigências de vacas em lactação. No presen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/03/2012