Zobrazeno 1 - 10
of 245
pro vyhledávání: '"M.I. Marcondes"'
Autor:
M.I. Marcondes, F.P. Provazi, T. Silvestre, A.L. Silva, S.C. Valadares Filho, M.M. Campos, F.S. Machado, P.P. Rotta
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 12, Pp 8821-8834 (2023)
ABSTRACT: We aimed to estimate the protein requirements of pregnant Holstein × Gyr cows. A total of 61 Holstein × Gyr (HG) cows were used, with an average initial body weight (BW) of 480 ± 10.1 kg and age 5 ± 0.5 yr. Cows were divided into 3 grou
Externí odkaz:
https://doaj.org/article/6f30c3aba673417aae6685e35a546174
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 10, Pp 6951-6960 (2023)
ABSTRACT: Studies evaluating the crude protein (CP) supplementation strategies across the year for grazing cattle and its association with the enzymes involved in the urea cycle and muscle and mammary gland developments are scarce. Thus, we aimed to
Externí odkaz:
https://doaj.org/article/c386f799cbbb405681b0170a65263399
Autor:
C.J.L. Herbster, A.P. Oliveira, A.S. Brito Neto, E.S. Justino, I.A.M.A. Teixeira, J.A.G. Azevedo, S.A. Santos, L.P. Silva, M.I. Marcondes, R.L. Oliveira, L.R. Bezerra, E.S. Pereira
Publikováno v:
Animal, Vol 18, Iss 2, Pp 101071- (2024)
Differences and/or similarities in the influence of sex class for hair sheep requirements remain inconclusive. Knowledge of energy requirements allows well-formulated diets to be provided which is crucial for improving animal production. We aimed to
Externí odkaz:
https://doaj.org/article/514c4fc91ca64bdbb0dfb965bb4ff5ad
Publikováno v:
Journal of Dairy Science, Vol 105, Iss 6, Pp 5097-5108 (2022)
ABSTRACT: Milk fatty acid (FA) profile can be divided into (1) de novo (C4–C14) that are synthesized in the mammary gland; (2) preformed (≥C18) that are absorbed from blood and originate from mobilized adipose tissues or dietary fat; and (3) mixe
Externí odkaz:
https://doaj.org/article/28b9f1497ef643879b03f8ac2aba5c81
Autor:
M.B. Abreu, A. Valldecabres, M.I. Marcondes, A. Correa, N.E. Lobos, C.B. Peterson, D. Atwell, N. Silva-del-Rio
Publikováno v:
Animal, Vol 17, Iss 4, Pp 100749- (2023)
Supplementation of rumen-protected amino acids may improve dairy cow performance but few studies have evaluated the implications of supplementing low-forage diets. Our objective was to evaluate the effects of supplementing rumen-protected methionine
Externí odkaz:
https://doaj.org/article/2e178810507645ad84975ba3dbc85870
Autor:
D.F. Quirino, M.I. Marcondes, L.N. Rennó, P.V.F. Correa, V.C.L. Morais, C.S. Cunha, T.D.A. Silva, A.L. da Silva, E. Miller-Cushon, P.P. Rotta
Publikováno v:
Animal, Vol 16, Iss 9, Pp 100613- (2022)
Holstein × Gyr and Holstein are the primary dairy breeds used in tropical systems, but when rearing under pasture, feed intake, behavior, and performance might differ between them. This study aimed to evaluate the voluntary intake, nutrient digestib
Externí odkaz:
https://doaj.org/article/b1dde77de3fb49aa9835b493648f8ca5
Autor:
T.R. Amorim, A.L. Silva, M.M. Ladeira, M.L. Chizzotti, C.S. Cunha, O.R. Machado Neto, J.R.R. Carvalho, R.R.P.S. Corte, L.F. Mueller, A.S.C. Pereira, M.I. Marcondes
Publikováno v:
Animal, Vol 14, Iss 4, Pp 763-770 (2020)
Dietary protein adjustments can reduce environmental impact and economic losses in production systems. However, we lack information regarding nitrogen (N) metabolism and protein requirements for maintenance of crossbred animals such as Red Norte bree
Externí odkaz:
https://doaj.org/article/60ce148f63a2435d85280494818f99bf
Autor:
C.J.L. Herbster, L.P. Silva, M.I. Marcondes, I.F.F. Garcia, R.L. Oliveira, L.S. Cabral, J.G. Souza, E.S. Pereira
Publikováno v:
Animal, Vol 14, Iss 8, Pp 1718-1723 (2020)
To estimate the nutritional requirements of hair sheep, knowledge about the animal’s weight and its relationships with growth performances is essential. A study was carried with the objective to establish the relationships between BW, fasting BW (F
Externí odkaz:
https://doaj.org/article/20331e21f2ac4eba951926ea894f9509
Autor:
M.M.D. Castro, R.L. Albino, J.P.P. Rodrigues, A.L.L. Sguizzato, M.M.F. Santos, P.P. Rotta, J.S. Caton, L.E.F.D. Moraes, F.F. Silva, M.I. Marcondes
Publikováno v:
Animal, Vol 14, Iss 9, Pp 1857-1866 (2020)
Nutrient requirements in cattle are dependent on physiological stage, breed and environmental conditions. In Holstein × Gyr crossbred dairy heifers, the lack of data remains a limiting factor for estimating energy and protein requirements. Thus, we
Externí odkaz:
https://doaj.org/article/e4dc0b415c6f440183948a8b6de760e0
Publikováno v:
Animal, Vol 14, Iss 2, Pp 399-408 (2020)
The use of compost bedded pack systems (CBS) has increased over the past 5 years in tropical countries, and studies associating production traits with economical outcomes of this system are warranted. Our objectives were to evaluate productive traits
Externí odkaz:
https://doaj.org/article/b78626fa4aa7420aaad84fab75b80819