In each of three trials, 240 crossbred barrows weaned at 17 d of age (5.1 kg BW) were assigned to one of three experimental treatments based on light and heavy weight outcome groups. Experimental treatments were 1) wean-to-finish at 0.69 m2/pig and 15 pigs/pen; 2) wean-to-finish double-stocked at 0.35 m2/pig, 30 pigs per pen for 8 wk and then randomly split into two pens (either stayed in same ...

Three comparative slaughter experiments with individually fed Nellore bulls (31 animals) and steers (66 animals) were used to determine their NEm and NEg and the effect of level of intake on their composition of gain. Bulls (experiment 1) were divided into two intake levels (60 g DM/kg0.75 of shrunk body weight (SBW) and ad libitum of a diet containing 2.3 Mcal ME/kg) and three slaughter groups...

Production of Atlantic salmon smolts in recirculation aquaculture systems (RAS) is growing, and novel production protocols using continuous light RAS are being implemented the industry. In present study, Salmon parr were exposed to either a traditional protocol (short-day winter signal [12:12 L:D] for 6 weeks) or light. Both photoperiods applied freshwater (FW) brackish water RAS. from all trea...

Abstract The objective of the study was to examine how l-citrulline supplementation ewes during mid-gestation influences placental activity, blood flow, lamb body weight, and carcass characteristics. Two studies were completed. A pharmacokinetic compare circulating plasma amino acid concentrations after a single intravenous injection 155 µmol/kg BW or an isonitrogenous amount l-alanine (control...

Abstract The impacts of maternal nutrition throughout the life offspring have been studied in last decades. However, some molecular mechanisms and responses involved fetal programming beef cattle remain unclear. This study investigated effect different prenatal strategies on liver metabolome body weight Nellore bulls at slaughter. For that purpose, three nutritional treatments were applied 126 ...

The aim of the research was to investigate effects different stocking densities on fattening performance, slaughter, carcass, meat quality characteristics, and fatty acid composition in New Zealand rabbits raised cage conditions also determine ideal housing frequency so that yields were not adversely affected. In study, 36 used. After weaning, started put into cages at as 1 rabbit/cage, 2 rabbi...

A comparative slaughter trial was conducted to estimate the phosphorus (P) requirement for maintenance and growth of crossbred lambs of Dorper with a Chinese indigenous sheep breed, thin-tailed Han sheep. Thirty-five Dorper×thin-tailed Han crossbred, noncastrated ram lambs (20.3±0.22 kg of shrunk body weight (SBW)) were used. Seven lambs were randomly chosen and slaughtered at 20 kg SBW as the ...

Appetite-related neuropeptides proopiomelanocortin (POMC) and Neuropeptide Y (NPY) are essential for regulating feeding behavior and energy homeostasis. The objective of this study was to evaluate the effects of variants in POMC and NPY genes on growth, carcass and meat quality traits in rabbits. A total of six SNPs were identified for POMC (n = 2) and NPY (n = 4) genes by direct sequencing. Th...

Serum and pituitary growth hormone (GH) concentrations were measured by radioimmunoassay in 69 Duroc and 70 Yorkshire swine genetically selected for at least 14 generations for either high backfat (high line) or low backfat (low line). For both breeds, the high line pigs had lower serum GH at weaning (P<.05) and lower serum and pitui tary GH at slaughter (P<.01) than the unselected control line...

The purpose of this study was to determine the quality of fresh and cooked meat, and the nutritive value of this meat from 62 male Australian feral goats. The goats were slaughtered at 5, 10, 20, 30, 40, 50, 60 and 70kg liveweights. Half of the goats were castrated and half were left as intact animals. The quality profiles of meat (e.g. pH, colour, pigment concentrations, cooking loss, shear fo...