Present Experimental Results on Protein: Energy Relationships in the Feeding of Dairy and Beef Cattle in Denmark

Author(s):  
P.D. Møller
1961 ◽  
Vol 20 (4) ◽  
pp. 820-823 ◽  
Author(s):  
R. F. Sewell ◽  
M. C. Thomas ◽  
David Price

1962 ◽  
Vol 41 (3) ◽  
pp. 739-745 ◽  
Author(s):  
J.P.B. O’Neil ◽  
J. Biely ◽  
G.C. Hodgson ◽  
J.R. Aitken ◽  
A.R. Robblee

1958 ◽  
Vol 37 (5) ◽  
pp. 1063-1070 ◽  
Author(s):  
J.V. Shutze ◽  
P.A. Thornton ◽  
R.E. Moreng

2017 ◽  
Vol 38 (3) ◽  
pp. 1471 ◽  
Author(s):  
Marcell Patachi Alonso ◽  
Eduardo Henrique Bevitori Kling de Moraes ◽  
Dalton Henrique Pereira ◽  
Douglas Dos Santos Pina ◽  
Mircéia Angele Mombach ◽  
...  

The present study aimed to evaluate the nutritional parameters (intake and digestibility) of beef cattle in two genetic groups fed protein-energy supplements formulated by different levels of replacement of maize with pearl millet grain during the dry season. Sixty-four uncastrated young bulls, with an average age of 20 months and an initial body weight of 388 ± 26 kg, were included in the study. The experimental area consisted of four paddocks approximately 4.7 ha in size, composed of Brachiaria brizantha ‘Marandu’ within a crop-livestock integration system. The study was based on a completely randomized factorial design (2×4). Two genetic groups (Crossbred and Nellore) and the effects of replacement of maize with pearl millet grain at 0%, 33%, 66%, and 100% in the supplement formulations were assessed. No significant effects were observed in the genetic groups and with the replacement of maize with pearl millet grain, as well as in the pasture total dry matter (DM) and nutrients intake, or the coefficients of total digestibility of nutrients. The dietary concentration of digested organic matter was not influenced by the replacement levels of pearl millet grain, with values of 514.88, 515.76, 516.01, and 515.98 g kg-1 of DM recorded for the 0%, 33%, 66%, and 100% replacement levels, respectively. Therefore, pearl millet grain can be utilized as a partial or total substitute for maize grain as the energetic ingredient in concentrated supplements for Nellore and crossbred beef cattle in pastures managed in crop-livestock integration systems.


2020 ◽  
Vol 241 ◽  
pp. 104211
Author(s):  
Mariana Barbizan ◽  
Eriton Egidio Lisboa Valente ◽  
Matheus Leonardi Damasceno ◽  
Sidnei Antônio Lopes ◽  
Ewerton de Souza Tanaka ◽  
...  

2017 ◽  
Vol 155 (5) ◽  
pp. 839-846 ◽  
Author(s):  
L. M. SOCREPPA ◽  
K. A. K. MORAES ◽  
A. S. OLIVEIRA ◽  
E. D. BATISTA ◽  
L. C. A. B. DROSGHIC ◽  
...  

SUMMARYThe purpose of the current study was to evaluate the effect of different levels of crude glycerine (CG, 810·9 g glycerol/kg) replacing dry ground maize on intake, digestibility, microbial nitrogen (N) synthesis and N utilization in grazing beef cattle. Five Nellore bulls (332 ± 29·6 kg initial body weight (BW)) were used in a 5 × 5 Latin square design. The animals grazed five Marandu grass (Urochloa brizantha cv. Marandu) paddocks of approximately 0·32 ha. Five supplements were evaluated: mineral supplementation (control, only ad libitum access to a mineral mixture) and 4 g of protein-energy supplementation/kg of BW with four levels of CG (0, 330, 660 and 1000 g/kg) replacing dry ground maize. Bulls that received protein-energy supplementation had greater organic matter (OM) pasture and digested OM (DOM) intakes than the control. No differences were observed among CG levels with regard to OM pasture, neutral detergent fibre and DOM intakes. However, ether extract intake increased linearly as CG levels increased. Protein-energy supplementation enhanced efficiency of microbial N synthesis, N balance and ammonia concentration, but they were not influenced by the CG levels. In conclusion, partial or total replacement of dry ground maize by CG in protein-energy supplements for grazing beef cattle exerted no changes on pasture intake, digestibility and N utilization. Therefore, the use of CG as an energy source in supplements for grazing cattle can be recommended.


2020 ◽  
Vol 21 ◽  
Author(s):  
Marcella Cândia D'Oliveira ◽  
Fábio Arguelo Biberg ◽  
Gabriela Facholi Bomfim ◽  
Maria da Graça Morais ◽  
José Mauro Diogo ◽  
...  

Abstract The aim was evaluated the effect of reduce in protein-energy supplementation frequency on nutrients intake, forage digestibility and degradability, as well as, ruminal pH and ammonia nitrogen (N-NH3) concentration in beef cattle receiving low-quality hay. A 4 x 4 Latin square design were used. Four steers were fed with low-quality hay and subjected to four treatments: no supplementation (control); protein-energy supplementation with 0.82% of body weight (BW) offered three times per week (3WK); 0.49% of BW offered five times a week (5 WK), and 0.35% of BW offered seven times per week (7 WK). The use of protein-energy supplementation increased intake of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), ether extract (EE), non-fibrous carbohydrates (NFC) and the digestibility coefficients of CP, EE, and NFC. However, no differences in DM and NDF degradation visit the website to get the how were observed between treatments in the evaluated hay. Supplementation did not alter ruminal pH, but the N-NH3 concentration was highest in treatment 7WK. Reduction in protein-energy supplementation frequency of daily to 3WK or 5WK does not negatively affect intake, digestibility and degradability of nutrients in beef cattle receiving low quality hay.


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