The effect of periodic energy restriction on growth performance, serum biochemical indices, and meat quality in sheep

The objective of this study was to investigate the effect of intact rapeseed (IR) supplementation in goat total mixed ration (TMR) pellets on performance, carcass traits, serum biochemical indices and meat quality. Forty-eight healthy Boer goats with similar initial bodyweight (12.52 ± 1.48 kg) were randomly assigned to four treatment groups, dietary containing 0%, 2.5%, 5.0% and 7.5% IR, respectively. The results showed that IR had no significant effect on weight gain and average daily feed intake, but 7.5% IR significantly decreased F/G (P<0.05). There were no significant difference among all groups in carcass weight, dressing percentage, visceral fat, liver, kidney and rumen weight, but IR significantly increased the rumen index (P<0.05). IR supplementation significantly increased serum total cholesterol, high density lipoprotein, low density lipoprotein and triglyceride level (P<0.05), but had no effect on serum free triiodothyronine, free thyroxine, aspartate aminotransferase or alanine aminotransferase level. In meat quality, IR had no significant influence on meat colour value, pH, water loss rate, cooked meat rate, crude protein, crude ash, total cholesterol content and amino acid composition, but could increase the meat fat content and the relative content of linolenic acid (C18:3, cis-9, 12, 15), eicosenoic acid (C20:1, cis-11) and decrease the relative content of palmitic acid (C16:0), margaric acid (C17:0) and heptadecenoic acid (C17:1, cis-10) (P<0.05). In conclusion, when adding amount in TMR pellets reached 7.5%, IR had almost no adverse effects on growth performance, carcass traits, liver and thyroid function of Boer goats. Conversely, it could reduce F/G and improve ruminal development and the meat quality to some extent.

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Effect of Dietary Supplementation with Hydrolyzed Wheat Gluten on Growth Performance, Cell Immunity and Serum Biochemical Indices of Weaned Piglets (Sus scrofa)

Agricultural Sciences in China ◽

10.1016/s1671-2927(11)60079-5 ◽

2011 ◽

Vol 10 (6) ◽

pp. 938-945 ◽

Cited By ~ 2

Author(s):

Xiu-qi WANG ◽

You FENG ◽

Gang SHU ◽

Qing-yan JIANG ◽

Jing-pei YANG ◽

...

Keyword(s):

Growth Performance ◽

Sus Scrofa ◽

Wheat Gluten ◽

Dietary Supplementation ◽

Weaned Piglets ◽

Cell Immunity ◽

Serum Biochemical ◽

Biochemical Indices

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Effects of Soy Protein Concentrate in Starter Phase Diet on Growth Performance, Blood Biochemical Indices, Carcass Traits, Immune Organ Indices and Meat Quality of Broilers

Animals ◽

10.3390/ani11020281 ◽

2021 ◽

Vol 11 (2) ◽

pp. 281

Author(s):

Qianyun Zhang ◽

Shan Zhang ◽

Guanglei Cong ◽

Yijian Zhang ◽

Marianne Hjøllund Madsen ◽

...

Keyword(s):

Body Weight ◽

Growth Performance ◽

Meat Quality ◽

Soy Protein ◽

Soy Protein Concentrate ◽

Protein Concentrate ◽

Immune Organ ◽

Blood Biochemical ◽

Biochemical Indices ◽

Blood Biochemical Indices

Soybean meal (SBM) is high in antinutritional factors (ANFs), which is not conducive to the starter growth of broilers. The purpose of this study was to investigate the effects of soy protein concentrate (SPC) in starter diet on growth performance, carcass traits, meat quality, immune organ indices and blood biochemical indices of broilers. A total of 384 1-day-old Arbor Acres (AA) male broilers (46.05 ± 0.37 g) with similar body weight were randomly divided into 4 groups with 8 replicates in each group and 12 broilers in each replicate. The experiment was divided into three phases: in starter phase (1–10 d), birds were fed a corn-SBM-based basal mash diet (control) and the basal diet was supplemented with SPC at 4% (SPC4), 8% (SPC8), 12% (SPC12). In the grower phase (11–21 d) and the finisher phase (22–42 d), the birds in all four treatment groups were fed the same diets. The results showed that the body weight was significantly increased in the SPC8 and SPC12 groups of broilers at 10 d and 42 d (p < 0.05). The average daily gain was significantly increased in the SPC12 group of broilers at 1–10 d and 1–42 d (p < 0.05). The average daily feed intake was significantly increased in the SPC8 and SPC12 groups of broilers at 1-10 d (p < 0.05). The feed conversion rates at 1–42 d (p = 0.055) tended to decline in the SPC12 group. The carcass yield and the thymus indices were significantly increased in the SPC12 group of broilers at 42 d (p < 0.05). Alanine aminotransferase (ALT)/aspartate aminotransferase (AST) tended to decline in SPC12 group at 10 d (p = 0.055) and total protein (TP) tended to increase in the SPC12 group at 42 d (p = 0.080). The contents of total cholesterol (T-CHO) and high-density lipoprotein (HDL) were significantly elevated in the SPC12 group of broilers at 42 d (p < 0.05). In conclusion, dietary inclusion of 12% SPC as a starter diet can be recommended due to the positive effects on broilers.

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