scholarly journals Body weight and semen production of broiler breeder males as influenced by crude protein levels and feeding regimens during rearing

1999 ◽  
Vol 78 (2) ◽  
pp. 190-196 ◽  
Author(s):  
X Zhang ◽  
WD Berry ◽  
GR McDaniel ◽  
DA Roland ◽  
P Liu ◽  
...  
2019 ◽  
Vol 7 (3) ◽  
pp. 5-9 ◽  
Author(s):  
Ahmad Syukur Hasibuan ◽  
J Silalahi ◽  
M Masfria

ABSTRACT Objective: To find out the effect of probiotics, javanese turmeric (Curcuma xanthorrhiza) and breadfruit (Artocarpus altilis) leaves extract in feedon productivity and quality of broilers. Design: The design of this study was experimental research. The viscous herbal extract from javanese turmeric and breadfruit leaves were prepared by maceration with 96% ethanol and the probiotics used EM4 (Effective Microorganisms-4). This study used male chicks and divided into 5 groups:  (1) negative control treatment (feed), (2) positive controls  (feed+antibiotics), (3) feed+0.1% extract+1% probiotics, (4) feed+0.2% extract+2% probiotics and (5) feed +0.3% extract+3% probiotics. The positive control used erythromycin. Feed intake, body weight gain and feed conversion rate were observed for 35 days. Total cholesterol and crude protein levels were examined on day 35. Interventions: The intervened variable was the concentration of extract used. Main outcome measures: The main measurement in this study were feed conversion rate,total cholesterol and crude protein levels. Results: The results showedthat combination of probiotics, javanese turmeric and breadfruit leaves herbal extract increased body weight 10.71% and feed intake 61.60%, decreased feed conversion 13.97% and total cholesterol 27.95% of treatment group and significantly different with negative and positive control groups (p<0.05) but did not affect (p>0.05) to crude protein levelsof treatment group or negative and positive control group. Conclusion: The administration of probiotics, javanese turmeric and breadfruit leaves herbal extract increased productivity and decreased cholesterol levels but did not affect crude protein levels in broilers.


2008 ◽  
Vol 87 (4) ◽  
pp. 805-811 ◽  
Author(s):  
H. Romero-Sanchez ◽  
P.W. Plumstead ◽  
N. Leksrisompong ◽  
K.E. Brannan ◽  
J. Brake

2011 ◽  
Vol 40 (6) ◽  
pp. 1347-1355 ◽  
Author(s):  
Rafael Monteiro Araújo Teixeira ◽  
Rogério de Paula Lana ◽  
Leonardo de Oliveira Fernandes ◽  
André Soares de Oliveira ◽  
José Maurício de Souza Campos ◽  
...  

The objective of this work was to evaluate the effects of three levels of concentrate (2.0, 4.0 and 6.0 kg/cow/day) and two levels of crude protein (CP) (14 and 16% total dietary dry matter), in comparison to mineral mixture (control) on the intake, apparent digestibility, milk composition and yield and on feed efficiency and use of concentrates of cows grazing elephant grass (Pennisetum purpureum, Schum) in the rainy season. Twenty-one milking Gyr cows with average body weight of 426 kg and yield of 13.0 kg of milk/cow/day at 55 days of lactation were distributed in randomized blocks design, with seven diets (treatments) in a 3 × 2 + 1 factorial arrangement and three replications, in a period of 84 days. Forage dry matter intake was not influenced by the diets, but total dietary dry matter intake increased by 45% with the inclusion of concentrate in the diet. However, milk yield increased by only 17% (1.76 kg more milk per day) with the use of concentrate. For dairy Gyr cows grazing elephant-grass during the rainy season, 2 kg of concentrate/cow/day and 14% of CP in the total diet provided the best productive response without harming body weight.


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