scholarly journals Supplementation with Fish Oil Improves Meat Fatty Acid Profile although Impairs Growth Performance of Early Weaned Rabbits

Animals ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 437 ◽  
Author(s):  
María Rodríguez ◽  
María Dolores Carro ◽  
Víctor Valiente ◽  
Nora Formoso-Rafferty ◽  
Pilar G. Rebollar
Keyword(s):  
Fatty Acid ◽  
Fish Oil ◽  
Growth Performance ◽  
Fatty Acid Profile ◽  
Average Daily Gain ◽  
Productive Performance ◽  
Rabbit Meat ◽  
Daily Gain ◽  
Lower Morbidity ◽  
Perirenal Fat

Our objective was to analyze the influence of replacing lard (control) with fish oil (FO) rich in long-chain n-3 polyunsaturated fatty acids in the diet of rabbits weaned at 25 days of age on their growth performance, meat quality, cecal fermentation, and ileal morphology. Twenty-four litters (12 control and 12 FO) of nine kits each were fed the experimental diets from weaning (25 days) until slaughter at 60 days of age. Half of the litters (six per diet) were used to monitor productive performance, carcass characteristics, and ileal morphology, and cecal fermentation was assessed in the rest of litters. Diet had no influence on feed intake, meat color, and pH or cecal fermentation, but FO-fed rabbits had lower (p ≤ 0.049) average daily gain, chilled carcass weight, and perirenal fat than control rabbits. Fish oil inclusion in the diet resulted in lower morbidity (5.56% vs. 20.4%; p = 0.019) and a healthier fatty acid profile with lower (p < 0.001) n-6/n-3 ratios in both muscle and perirenal fat. In summary, the inclusion of FO in the diet of early weaned rabbits improved the fatty acid profile of rabbit meat and fat and decreased the morbidity, but growth performance was slightly reduced.

Fish oil-free diets for Pacific white shrimp Litopenaeus vannamei: The effects of DHA-EPA supplementation on juvenile growth performance and muscle fatty acid profile

Aquaculture ◽  
2019 ◽  
Vol 511 ◽  
pp. 734276 ◽  
Author(s):  
Bruno Cavalheiro Araújo ◽  
José Antonio Mata-Sotres ◽  
María Teresa Viana ◽  
Aurora Tinajero ◽  
André Braga
Keyword(s):  
Fatty Acid ◽  
Fish Oil ◽  
Growth Performance ◽  
Fatty Acid Profile ◽  
Litopenaeus Vannamei ◽  
Pacific White Shrimp ◽  
White Shrimp ◽  
Juvenile Growth

scholarly journals Effects of replacement of alfalfa by big-leaf mulberry on growth performance, digestion and meat quality in growing rabbits

2019 ◽  
Vol 27 (4) ◽  
pp. 199
Author(s):  
X.Z Wu ◽  
P.L. Yang ◽  
X.H. Gao ◽  
Z.G. Wen ◽  
S.F. Dai ◽  
...  
Keyword(s):  
Growth Performance ◽  
Meat Quality ◽  
Average Daily Gain ◽  
Ether Extract ◽  
Body Weights ◽  
Alfalfa Meal ◽  
Effect Of Treatment ◽  
Rabbit Meat ◽  
Meat Samples ◽  
Daily Gain

<p>This study aimed to investigate the effect of sundried big-leaf mulberry (BLM) as a replacement for alfalfa on the growth performance, digestibility of nutrients, nitrogen (N) utilisation and meat quality in New Zealand White rabbits. One hundred and sixty weaned rabbits, aged 35±1 d and with a body weight of 755±26 g, were randomly assigned to the 4 treatments with 20 replicates of 2 rabbits (1 male and 1 female) each. Animal performance was evaluated between the 35th and 77th d of age in 40 animals per treatment. The coefficients of total tract apparent digestibility (CTTAD) of nutrients and N utilisation were measured between 77 to 83 d of age in 30 animals per treatment. The control rabbits were fed a corn-soybean meal-alfalfa meal based diet. The three experimental groups were fed a similar diet in which the alfalfa meal was replaced by 10% (BLM10), 20% (BLM20), or 30% (BLM30) BLM. The final body weights and average daily gain were higher (<em>P</em>&lt;0.05) in BLM20 rabbits compared to control and BLM30 rabbits. Although BLM inclusion had no effects on the CTTAD of dry matter, organic matter and crude protein (<em>P</em>&gt;0.10), the CTTAD of ether extract was higher in rabbits fed the diets based on BLM (<em>P</em>&lt;0.05). No effect of treatment was noted on ingested and faecal N. Urinary (<em>P</em>&lt;0.05) and retained N (<em>P</em>&lt;0.10) were higher in animals fed with BLM30 and BLM20 diets, respectively. Dietary BLM supplementation increased a* (<em>P</em>&lt;0.05) and tended to reduce L* (<em>P</em>&lt;0.10) in rabbit meat samples. It was concluded that replacing alfalfa meal with BLM (20%) can promote growth and increase ether extract digestibility. Additionally, dietary BLM supplementation can increase the redness value of meat.</p>

scholarly journals Effects of Paper Mulberry Silage on the Growth Performance, Rumen Microbiota and Muscle Fatty Acid Composition in Hu Lambs

Fermentation ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 286
Author(s):  
Yi Xiong ◽  
Chunze Guo ◽  
Lin Wang ◽  
Fei Chen ◽  
Xianwen Dong ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Growth Performance ◽  
Unsaturated Fatty Acids ◽  
Average Daily Gain ◽  
Control Group ◽  
Microbial Composition ◽  
Longissimus Dorsi Muscle ◽  
Fatty Acids Profile ◽  
Daily Gain

Paper mulberry (Broussonetia papyrifera) is widely ensiled to feed sheep in southwestern China, as unconventional woody forage. Feeding lambs with paper mulberry silage (PMS) may improve certain feeding characteristics, thereby affecting the growth performance and meat quality. The aim of this study is to investigate the effects of four diets of PMS on growth performance, rumen microbial composition, and muscle fatty acids profile in Hu lambs. The results showed that 30% and 40% PMS increased the dry matter intake and average daily gain of Hu lambs compared to the control group. PMS30 and PMS40 increased the content of C24:1, and PMS40 increased the content of C20:5n-3. The content of microbial protein (MCP) was higher in PMS40 than in others, but PMS30 and PMS40 reduced the total volatile fatty acid in rumen. PMS30 significantly increased the ratio of acetic acid to propionic acid. The abundance of ruminal Christensenellaceae_R-7_group and norank_f_Eubacterium_coprostanoligenes_group was significantly higher in PMS30 and PMS40 groups. Moreover, Christensenellaceae_R-7_group had a significant positive correlation with n3-polyunsaturated fatty acid. PMS40 might lead to a relatively high content of unsaturated fatty acids in longissimus dorsi muscle by increasing the relative abundance of Christensenellaceae_R-7_group in rumen.

Effect of dietary n-3/n-6 ratio on fatty acid composition of liver, meat and perirenal fat in rabbits

1999 ◽  
Vol 68 (4) ◽  
pp. 647-654 ◽  
Author(s):  
M. Bernardini ◽  
A. Dal Bosco ◽  
C. Castellini
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Fish Oil ◽  
Fatty Acid Profile ◽  
Unsaturated Fatty Acids ◽  
Meat Products ◽  
Dietary Fatty Acids ◽  
Longissimus Lumborum ◽  
Perirenal Fat

AbstractThe metabolic pathways of dietary fatty acids were studied in rabbits by analysing the fatty acid profile of different tissues (liver, perirenal fat,longissimus lumborummuscle). Four groups of 24 hybrid males each were assigned to four semi-purified diets, varying in the source oflipids which differed in n-3/n-6 ratios: 180 g/kg sunflower (S), 80 g/kg flaxseed + 90 g/kg sunflower (SF), 160 g/kg flaxseed (F) and 60 g/kg fish oil (FI). The liver showed a very important rôle in fatty acid syntheses and was the tissue richest in long-chain (≥20 C) polyunsaturated fatty acids (LCP) of n-3 and n-6 series. The S diet gave the highest mono-unsaturated fatty acids and n-6 LCP (respectively, 201·9 and 384·9 g/kg,P< 0·01) also showing a clear antagonism v. n-3 LCP; the FI diet determined the highest enrichment of n-3 LCP (179·5 g/kg,P< 0·01). a-linolenic acid was efficiently converted into n-3 LCP mainly when п-ЗІп-6 ratio was high (Σn-3/С20: 4n-6: 2·74 and 3.61,P< 0·01 in flaxseed and fish-oil diet, respectively). The same trend occurred in the muscle but in a less consistent way. The adipose tissue more closely reflected the composition of the dietary fatty acids, showing variations mainly concerning polyunsaturated fatty acids (S diet), and LCP n-3 (FI diet: 44·9 g/kg,P< 0·01). Results showed the possibility of modifying the fatty acid profile of rabbit meat by dietary means and that the n-3/n-6 ratio of the food is crucial in regulating the relative presence of LCP n-3 or n-6 in meat products.

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