Performance, breast meat yield and abdominal fat deposition of male broiler chickens fed diets supplemented with DL‐xnethionine or DL‐xnethionine hydroxy analogue free acid

1997 ◽  
Vol 38 (4) ◽  
pp. 397-404 ◽  
Author(s):  
E. Esteve‐Garcia ◽  
LL. Llauradó
Keyword(s):  
Broiler Chickens ◽  
Free Acid ◽  
Abdominal Fat ◽  
Fat Deposition ◽  
Breast Meat ◽  
Meat Yield ◽  
Breast Meat Yield ◽  
Abdominal Fat Deposition

scholarly journals Bioavailability of liquid methionine hydroxy analogue-free acid relative to DL-methionine in broilers

2013 ◽  
Vol 61 (5) ◽  
pp. 1513-1520 ◽  
Author(s):  
Jiří Zelenka ◽  
Jaroslav Heger ◽  
Vlastislav Machander ◽  
Markus Wiltafsky ◽  
Martin Lešták
Keyword(s):  
Body Weight ◽  
Broiler Chickens ◽  
Free Acid ◽  
Basal Diet ◽  
Relative Bioavailability ◽  
Feed Conversion ◽  
Breast Meat ◽  
Meat Yield ◽  
Carcass Yield ◽  
Breast Meat Yield

An experiment with broiler chickens was conducted to compare the relative bioavailability of liquid methionine hydroxy analogue free acid (MHA-FA) with that of DL-methionine (DLM) during fattening to 35 days of age. Ross 308 male chicks were allotted to 9 treatments, each consisting of six replicates of 140 birds/pen. Four graded levels (0.04, 0.08, 0.16, and 0.28 %) of MHA-FA or DLM products (weight/weight comparison) were added to a maize-wheat-soyabean meal basal diet deficient in sulphur amino acids. The criteria of response were body weight, feed conversion ratio, carcass yield and breast meat yield. Significant responses to graded levels of both methionine sources were observed in all response criteria. Using a multi-exponential model describing the dose-response relationships, the bioavailability estimates of MHA-FA relative to DLM on a weight-to-weight basis were 68, 70, 54 and 59 % for body weight, feed conversion, carcass yield and breast meat yield, respectively. If MHA-FA was compared with DLM on equimolar basis its bioavailability was 77.7, 79.0, 59.3 and 64.6 for body weight, feed conversion, carcass yield and breast meat yield, respectively. The bioavailability of MHA-FA for carcass yield and breast meat yield was significantly (P < 0.05) lower than that of DLM on a weight-to-weight and on equimolar basis.

scholarly journals miR-429-3p/LPIN1 Axis Promotes Chicken Abdominal Fat Deposition via PPARγ Pathway

2020 ◽  
Vol 8 ◽  
Author(s):  
Xiaohuan Chao ◽  
Lijin Guo ◽  
Qi Wang ◽  
Weiling Huang ◽  
Manqing Liu ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Opposite Effect ◽  
Abdominal Fat ◽  
Fat Deposition ◽  
High Fat ◽  
Mrna Sequencing ◽  
Ratio Size ◽  
Pathway Activation ◽  
Proliferation And Differentiation ◽  
Abdominal Fat Deposition

To explore the regulatory mechanism of abdominal fat deposition in broilers, 100-day-old Sanhuang chickens (n = 12) were divided into high-fat and low-fat groups, according to the abdominal fat ratio size. Total RNA isolated from the 12 abdominal fat tissues was used for miRNA and mRNA sequencing. Results of miRNA and mRNA sequencing revealed that miR-429-3p was highly expressed in high-fat chicken whereas LPIN1 expression was downregulated. Further, we determined that miR-429-3p promoted preadipocyte proliferation and differentiation, whereas LPIN1 exerted an opposite effect. Notably, we found that the miR-429-3p/LPIN1 axis facilitated PPARγ pathway activation, which is closely associated with the progression of adipogenesis. In conclusion, our results provide evidence that a novel miR-429-3p/LPIN1 axis is involved in the regulation of adipogenesis, which may have a guiding role in the improvement of breeding for abdominal fat traits in broiler chickens.

The effect of altering the dietary arginine to lysine ratio on the breast meat yield of broiler chickens at moderate and high temperatures

1997 ◽  
Vol 48 (5) ◽  
pp. 709 ◽  
Author(s):  
I. Gorman ◽  
D. Balnave ◽  
J. Brake
Keyword(s):  
High Temperatures ◽  
Broiler Chickens ◽  
Breast Meat ◽  
Response Curves ◽  
Meat Yield ◽  
Breast Meat Yield ◽  
Effects Of Temperature

In 4 experiments broilers were housed at moderate or high temperatures and fed diets containing arginine : lysine (arg : lys) ratios ranging from 1·01 to 1·45 from 3 weeks of age until reaching a processing weight of 2·2 kg. The effects of temperature and arg : lys ratio on breast meat yield were determined. In the first 3 experiments, increasing the arg : lys ratio increased breast meat yield at moderate temperatures and reduced breast meat yield at high temperatures. Hypothesised response curves are presented to explain the different responses in breast meat yield to arg : lys ratio at moderate and high temperatures. Expt 4 was designed to test the validity of the hypothesised response curves. The pattern of the responses obtained from this experiment supports the hypothesis.

Dietary Soybean Oil, but Not Krabok Oil, Diminishes Abdominal Fat Deposition in Broiler Chickens

2007 ◽  
Vol 6 (11) ◽  
pp. 792-795 ◽  
Author(s):  
Sasiphan Wongsuthav ◽  
Chalermpon Yuangklang ◽  
Suntorn Wittayakun ◽  
Kraisit Vasupen ◽  
Jamlong Mitchaotha ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Broiler Chickens ◽  
Abdominal Fat ◽  
Fat Deposition ◽  
Abdominal Fat Deposition

RESPONSE OF MALE AND FEMALE BROILERS TO DIET PROTEIN

1988 ◽  
Vol 68 (3) ◽  
pp. 881-889 ◽  
Author(s):  
S. LEESON ◽  
L. J. CASTON ◽  
J. D. SUMMERS
Keyword(s):  
Body Weight ◽  
Protein Content ◽  
Abdominal Fat ◽  
Carcass Composition ◽  
Carcass Weight ◽  
Breast Meat ◽  
Meat Yield ◽  
Low Protein ◽  
Breast Meat Yield ◽  
Protein Diets

Two experiments were conducted to note the broilers' response to graded levels of dietary protein (CP). Female birds were fed one of six diet series ranging from 22–20–18 to 18–18–16% CP from 0–21 days, 21–35 days and 35–42 days, respectively. Males were fed diet series from 28–24–22 to 20–18–16 over the same time periods (Table 1). Each diet program was tested with four replicate groups of 60 birds. Body weight and feed intake were monitored at time of feed change-over and at termination of experiment. Twenty birds per replicate were used for carcass analyses. Females were heavier when diets of higher protein content were offered (P < 0.05). These birds consumed more feed (P < 0.05) but exhibited feed efficiency that was not different to birds fed diets of lower protein content. Carcass weight and breast meat yield were not influenced by diet, although higher-protein diet series resulted in reduced proportional abdominal fat pad size (P < 0.01). Diet protein had no effect on body weight of male birds at 42 d (P > 0.05). Male birds reared on a program involving die lowest CP levels of 20–18–16 exhibited inferior feed utilization relative to birds from most other treatments (P < 0.05). Programs with low-protein diets for males resulted in reduced carcass weight, reduced breast meat yield and increased abdominal fat deposition (P < 0.05). It is concluded that male birds can be reared on very low protein diets without loss of weight, although carcass quality will be inferior. Female broilers are heavier when diet protein intake is increased through use of diets with higher protein content. Key words: Broiler, diet protein, performance, carcass composition

scholarly journals Effect of Polysavone (Alfalfa Extract) on Abdominal Fat Deposition and Immunity in Broiler Chickens

2007 ◽  
Vol 86 (9) ◽  
pp. 1955-1959 ◽  
Author(s):  
X.F. Dong ◽  
W.W. Gao ◽  
J.M. Tong ◽  
H.Q. Jia ◽  
R.N. Sa ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Abdominal Fat ◽  
Fat Deposition ◽  
Abdominal Fat Deposition
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